/* ============================================================
   TYPE MASTER PRO — HOME PAGE STYLES (2026)
   Typing interface, controls, keyboard, SEO content
   ============================================================ */

/* ============================================================
   HERO / HEADER
   ============================================================ */
.home-container {
    max-width: 920px;
    margin: 0 auto;
    padding: 24px;
}

.header {
    text-align: center;
    margin-bottom: 28px;
    margin-top: 0;
    padding: 32px 24px 28px;
    background: linear-gradient(180deg, var(--light-surface) 0%, var(--light-surface-alt) 100%);
    border: 1px solid var(--light-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .header {
    background: linear-gradient(180deg, var(--dark-surface) 0%, var(--dark-surface-alt) 100%);
    border-color: var(--dark-border);
}

.header h1 {
    font-size: clamp(1.6rem, 4vw, 2.15rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin: 0 0 10px;
    color: var(--light-text);
    transition: color var(--t-base);
}

body.dark-mode .header h1 {
    color: var(--dark-text);
}

.header h1 a {
    color: inherit;
    text-decoration: none;
}

.subtitle {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    font-weight: 500;
    color: var(--light-text-soft);
    margin: 0 0 8px;
    letter-spacing: -0.01em;
    transition: color var(--t-base);
}

body.dark-mode .subtitle {
    color: var(--dark-text-soft);
}

.header p {
    color: var(--light-text-muted);
    margin-bottom: 20px;
    font-size: 0.95rem;
    transition: color var(--t-base);
}

body.dark-mode .header p {
    color: var(--dark-text-muted);
}

/* ============================================================
   SELECTORS
   ============================================================ */
.selectors-container {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin: 0 auto 4px;
    max-width: 640px;
}

.lesson-selector {
    flex: 1;
    min-width: 220px;
}

.lesson-dropdown {
    width: 100%;
    padding: 13px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1.5px solid var(--light-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--t-fast), box-shadow var(--t-fast), background-color var(--t-base);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    color: var(--light-text);
    background-color: var(--light-surface);
    cursor: pointer;
    font-family: inherit;
}

.lesson-dropdown:hover {
    border-color: var(--light-primary);
}

.lesson-dropdown:focus {
    outline: 0;
    border-color: var(--light-highlight);
    box-shadow: var(--shadow-glow);
}

.lesson-dropdown.highlight-action {
    border-color: var(--light-highlight);
    box-shadow: var(--shadow-glow-strong);
    animation: softPulse 2s ease-in-out infinite;
}

@keyframes softPulse {
    0%, 100% { box-shadow: var(--shadow-glow); }
    50% { box-shadow: var(--shadow-glow-strong); }
}

body.dark-mode .lesson-dropdown {
    background-color: var(--dark-surface);
    color: var(--dark-text);
    border-color: var(--dark-border);
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
}

body.dark-mode .lesson-dropdown:hover {
    border-color: var(--dark-primary);
}

body.dark-mode .lesson-dropdown:focus {
    border-color: var(--dark-highlight);
    box-shadow: 0 0 0 4px rgba(129, 140, 248, 0.15);
}

/* ============================================================
   LOGIN STATUS
   ============================================================ */
#loginStatus {
    margin-bottom: 24px;
    transition: all var(--t-base);
}

/* ============================================================
   LESSON / TYPING WORKSPACE
   ============================================================ */
.lesson-container {
    background-color: var(--light-surface);
    padding: 32px;
    border-radius: var(--radius-2xl);
    border: 1px solid var(--light-border);
    box-shadow: var(--shadow-md);
    margin-bottom: 28px;
    position: relative;
    transition: background-color var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}

body.dark-mode .lesson-container {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
    overflow: hidden;
}

@keyframes rotate-gradient {
    0% { transform: rotate(0); }
    100% { transform: rotate(360deg); }
}

body.dark-mode .lesson-container::before {
    content: '';
    position: absolute;
    z-index: -1;
    left: -50%;
    top: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(transparent, rgba(129, 140, 248, 0.4), rgba(167, 139, 250, 0.4), rgba(236, 72, 153, 0.3), rgba(129, 140, 248, 0.4), transparent 40%);
    animation: 8s linear infinite rotate-gradient;
    opacity: 0.5;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress-container {
    height: 10px;
    background-color: var(--light-bg-alt);
    border-radius: var(--radius-full);
    margin-bottom: 28px;
    overflow: hidden;
    transition: background-color var(--t-base);
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.06);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #4f46e5, #7c3aed, #a855f7);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width var(--t-slow);
    box-shadow: 0 0 12px rgba(124, 58, 237, 0.4);
}

body.dark-mode .progress-container {
    background-color: var(--dark-bg);
}

/* ============================================================
   TYPING LINE DISPLAY
   ============================================================ */
#currentLine {
    font-family: var(--font-mono);
    font-size: clamp(1.15rem, 2.5vw, 1.45rem);
    line-height: 1.9;
    letter-spacing: 0.01em;
    white-space: pre-wrap;
    overflow-wrap: break-word;
    margin-bottom: 28px;
    min-height: 80px;
    cursor: text;
    text-align: left;
    background-color: var(--light-bg-alt);
    padding: 24px 26px;
    border-radius: var(--radius-xl);
    font-weight: 500;
    transition: background-color var(--t-base), color var(--t-base);
    border: 1px solid var(--light-border-soft);
    position: relative;
}

body.dark-mode #currentLine {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
}

#currentLine .correct {
    color: #10b981;
    font-weight: 600;
}

body.dark-mode #currentLine .correct {
    color: #34d399;
}

#currentLine .incorrect {
    color: #ef4444;
    text-decoration: underline wavy #ef4444;
    text-underline-offset: 4px;
}

body.dark-mode #currentLine .incorrect {
    color: #f87171;
    text-decoration-color: #f87171;
}

.typing-cursor {
    width: 2.5px;
    height: 1.3em;
    background-color: var(--light-highlight);
    animation: 0.9s infinite blink;
    vertical-align: middle;
    margin-left: 2px;
    display: inline-block;
    border-radius: 1px;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ============================================================
   CONTROLS
   ============================================================ */
.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}

.controls .stat-box {
    padding: 14px 22px;
    background-color: var(--light-surface-alt);
    border: 1px solid var(--light-border);
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
    flex: 1;
    min-width: 90px;
    border-radius: var(--radius-lg);
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .controls .stat-box {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
}

.controls .stat-label,
.controls .stat-value {
    margin: 0;
    padding: 0;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1;
}

.controls .stat-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--light-text-muted);
}

body.dark-mode .controls .stat-label {
    color: var(--dark-text-muted);
}

/* ============================================================
   BUTTONS
   ============================================================ */
button {
    border: none;
    border-radius: var(--radius-md);
    transition: all var(--t-fast);
    cursor: pointer;
    font-family: inherit;
}

button:hover:not(:disabled) {
    transform: translateY(-1px);
}

button:active:not(:disabled) {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.icon-btn {
    flex: 0 0 auto;
    min-width: 48px;
    height: 48px;
    padding: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.icon-btn svg {
    width: 22px;
    height: 22px;
    fill: white;
    transition: transform var(--t-fast);
}

.icon-btn:hover:not(:disabled) svg {
    transform: scale(1.08);
}

#prevBtn {
    background: linear-gradient(135deg, #64748b, #475569);
}

#nextBtn {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
}

#pauseResumeBtn {
    background: linear-gradient(135deg, #f59e0b, #f97316);
}

#pauseResumeBtn .icon-play {
    display: none;
}

#pauseResumeBtn.paused .icon-pause {
    display: none;
}

#pauseResumeBtn.paused .icon-play {
    display: block;
}

#restartBtn {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.highlight-button {
    animation: pulse-next-btn 2s infinite;
}

@keyframes pulse-next-btn {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.5);
    }
    70% {
        transform: scale(1.04);
        box-shadow: 0 0 0 14px rgba(79, 70, 229, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0);
    }
}

/* ============================================================
   STATS
   ============================================================ */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 14px;
    margin-top: 32px;
}

.stats-container.hidden {
    display: none;
}

.stat-box {
    background-color: var(--light-surface-alt);
    min-width: 0;
    box-shadow: var(--shadow-xs);
    cursor: pointer;
    padding: 20px 16px;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--t-base);
    border: 1px solid var(--light-border-soft);
    position: relative;
    overflow: hidden;
}

.stat-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4f46e5, #7c3aed);
    opacity: 0;
    transition: opacity var(--t-base);
}

.stat-box:hover::before {
    opacity: 1;
}

body.dark-mode .stat-box {
    background-color: var(--dark-surface-alt);
    border-color: var(--dark-border);
}

.stat-value {
    font-size: clamp(1.5rem, 3vw, 1.9rem);
    margin-bottom: 6px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.wpm {
    color: #4f46e5;
}

body.dark-mode .wpm {
    color: #818cf8;
}

.accuracy {
    color: #10b981;
}

body.dark-mode .accuracy {
    color: #34d399;
}

.time {
    color: #d946ef;
}

body.dark-mode .time {
    color: #e879f9;
}

.words {
    color: #f59e0b;
}

body.dark-mode .words {
    color: #fbbf24;
}

.wrong-words {
    color: #ef4444;
}

body.dark-mode .wrong-words {
    color: #f87171;
}

.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--light-text-muted);
    font-weight: 600;
    transition: color var(--t-base);
}

body.dark-mode .stat-label {
    color: var(--dark-text-muted);
}

/* ============================================================
   COMPLETION MESSAGE
   ============================================================ */
.completion-message {
    text-align: center;
    margin-top: 24px;
    padding: 18px 24px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border-radius: var(--radius-xl);
    display: none;
    animation: fadeIn 0.5s ease;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
}

.completion-message.paused-message {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   CTA BUTTONS
   ============================================================ */
.button-container {
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff;
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all var(--t-base);
    margin: 0;
    text-decoration: none;
    border: none;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    letter-spacing: -0.01em;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.cta-button:active {
    transform: translateY(0);
}

.cta-button.disabled {
    background: #cbd5e1;
    cursor: not-allowed;
    box-shadow: none;
}

.dashboard-btn {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

.dashboard-btn:hover {
    box-shadow: 0 8px 24px rgba(14, 165, 233, 0.4);
}

.dashboard-btn.login-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.bulge-animation {
    animation: bulge-animation 1.5s infinite;
}

@keyframes bulge-animation {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    }
    50% {
        transform: scale(1.04);
        box-shadow: 0 8px 24px rgba(245, 158, 11, 0.5);
    }
}

.completion-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-top: 20px;
}

.completion-tip {
    font-size: 0.9rem;
    color: var(--light-text-soft);
    text-align: center;
    padding: 12px 20px;
    background: var(--light-primary-soft);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.15);
    max-width: 500px;
    line-height: 1.5;
}

body.dark-mode .completion-tip {
    background: var(--dark-primary-soft);
    color: var(--dark-text-soft);
    border-color: rgba(129, 140, 248, 0.2);
}

/* ============================================================
   KEYBOARD
   ============================================================ */
.keyboard {
    margin-top: 32px;
    background-color: var(--light-bg-alt);
    padding: 18px 14px;
    border-radius: var(--radius-xl);
    box-shadow: inset 0 1px 3px rgba(15, 23, 42, 0.06);
    transition: background-color var(--t-base);
    border: 1px solid var(--light-border-soft);
}

body.dark-mode .keyboard {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.4);
}

.keyboard-row {
    display: flex;
    justify-content: center;
    margin-bottom: 6px;
}

.keyboard-row:last-child {
    margin-bottom: 0;
}

.key {
    background: linear-gradient(to bottom, #ffffff, #f8fafc);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 0 #cbd5e1, 0 2px 4px rgba(15, 23, 42, 0.08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    height: 36px;
    margin: 0 3px;
    padding: 5px;
    width: 48px;
    transition: all 0.1s ease-out;
    position: relative;
    color: var(--light-key-text);
    font-family: var(--font-sans);
}

.key:hover {
    background: linear-gradient(to bottom, #ffffff, #f1f5f9);
}

.key.active {
    background: linear-gradient(to top, #eef2ff, #e0e7ff);
    box-shadow: 0 0 0 #cbd5e1, 0 1px 1px rgba(15, 23, 42, 0.1), inset 0 1px 3px rgba(15, 23, 42, 0.1);
    transform: translateY(2px);
}

.key.key-wide {
    width: 76px;
}

.key.key-space {
    width: 280px;
}

.key.next-key-highlight {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    border-color: #4338ca;
    animation: pulse-highlight 1.5s ease-in-out infinite;
}

@keyframes pulse-highlight {
    0%, 100% {
        box-shadow: 0 0 4px rgba(99, 102, 241, 0.6), 0 2px 0 #4338ca;
    }
    50% {
        box-shadow: 0 0 14px rgba(99, 102, 241, 0.8), 0 0 20px rgba(99, 102, 241, 0.4), 0 2px 0 #4338ca;
    }
}

body.dark-mode .key {
    background: linear-gradient(to bottom, #1e293b, #1a2236);
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow: 0 2px 0 #0f172a, 0 2px 4px rgba(0, 0, 0, 0.3);
    color: var(--dark-key-text);
}

body.dark-mode .key:hover {
    background: linear-gradient(to bottom, #334155, #1e293b);
}

body.dark-mode .key.active {
    background: linear-gradient(to top, #1e293b, #1a2236);
    box-shadow: 0 0 0 #0f172a, 0 1px 1px rgba(0, 0, 0, 0.4), inset 0 1px 3px rgba(0, 0, 0, 0.5);
}

body.dark-mode .key.next-key-highlight {
    background: linear-gradient(135deg, #6366f1, #818cf8);
    border-color: #818cf8;
    color: #fff;
}

/* ============================================================
   VOLUME CONTROL
   ============================================================ */
.centered-volume-control {
    border: 1px solid var(--light-border);
    padding: 10px;
    border-radius: var(--radius-lg);
    display: inline-block;
    transition: border-color var(--t-base), background-color var(--t-base);
    background-color: var(--light-surface);
}

body.dark-mode .centered-volume-control {
    border-color: var(--dark-border);
    background-color: var(--dark-surface);
}

.volume-control-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

#volumeIcon {
    background-color: var(--light-bg-alt);
    border: 1px solid var(--light-border);
    border-radius: 50%;
    width: 42px;
    height: 42px;
    padding: 0;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--t-fast);
}

#volumeIcon:hover {
    background-color: var(--light-primary-soft);
    border-color: var(--light-primary);
}

body.dark-mode #volumeIcon {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
}

body.dark-mode #volumeIcon:hover {
    background-color: var(--dark-primary-soft);
    border-color: var(--dark-primary);
}

#volumeIcon svg {
    fill: var(--light-text);
    width: 22px;
    height: 22px;
    transition: fill var(--t-base);
}

body.dark-mode #volumeIcon svg {
    fill: var(--dark-text);
}

.volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 130px;
    height: 5px;
    background: var(--light-bg-alt);
    border-radius: var(--radius-full);
    outline: 0;
    cursor: pointer;
    transition: background-color var(--t-base);
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.4);
    transition: transform var(--t-fast);
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.4);
}

.volume-slider::-moz-range-track {
    width: 100%;
    height: 5px;
    background: var(--light-bg-alt);
    border-radius: var(--radius-full);
    cursor: pointer;
}

body.dark-mode .volume-slider {
    background: var(--dark-bg);
}

body.dark-mode .volume-slider::-webkit-slider-thumb {
    background: linear-gradient(135deg, #6366f1, #818cf8);
}

body.dark-mode .volume-slider::-moz-range-thumb {
    background: linear-gradient(135deg, #6366f1, #818cf8);
}

body.dark-mode .volume-slider::-moz-range-track {
    background: var(--dark-bg);
}

/* ============================================================
   POPUP
   ============================================================ */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.popup-content {
    background: var(--light-surface);
    padding: 28px;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    cursor: default;
    transition: background-color var(--t-base);
    max-width: 90vw;
    text-align: center;
}

body.dark-mode .popup-content {
    background: var(--dark-surface);
}

.popup-content img {
    max-width: 100%;
    height: auto;
    max-height: 70vh;
    display: block;
    margin: 0 auto 18px;
    border-radius: var(--radius-lg);
}

.popup-content p {
    font-weight: 600;
    margin: 0;
    color: var(--light-text);
    transition: color var(--t-base);
    font-size: 0.95rem;
}

body.dark-mode .popup-content p {
    color: var(--dark-text);
}

/* ============================================================
   SEO CONTENT SECTION
   ============================================================ */
.seo-content-section {
    padding: 32px 28px;
    max-width: 920px;
    margin: 48px auto;
    line-height: 1.75;
    background: var(--light-surface);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--light-border);
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .seo-content-section {
    background: var(--dark-surface);
    border-color: var(--dark-border);
}

.seo-content-section h2 {
    font-size: clamp(1.35rem, 3vw, 1.65rem);
    color: var(--light-text);
    border-bottom: 2px solid var(--light-primary);
    padding-bottom: 12px;
    margin-top: 40px;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    transition: color var(--t-base), border-color var(--t-base);
}

.seo-content-section h2:first-of-type {
    margin-top: 0;
}

body.dark-mode .seo-content-section h2 {
    color: var(--dark-text);
    border-bottom-color: var(--dark-primary);
}

.seo-content-section h3 {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    color: var(--light-text);
    margin-top: 28px;
    margin-bottom: 14px;
    font-weight: 700;
    letter-spacing: -0.015em;
    transition: color var(--t-base);
}

body.dark-mode .seo-content-section h3 {
    color: var(--dark-text);
}

.seo-content-section h4 {
    font-size: 1rem;
    color: var(--light-text);
    margin-top: 20px;
    margin-bottom: 10px;
    font-weight: 700;
    transition: color var(--t-base);
}

body.dark-mode .seo-content-section h4 {
    color: var(--dark-text);
}

.seo-content-section p,
.seo-content-section li {
    text-align: justify;
    font-size: 1rem;
    color: var(--light-text-soft);
    transition: color var(--t-base);
}

body.dark-mode .seo-content-section p,
body.dark-mode .seo-content-section li {
    color: var(--dark-text-soft);
}

.seo-content-section ul {
    list-style-type: disc;
    padding-left: 24px;
}

.seo-content-section ul li {
    margin-bottom: 8px;
}

.seo-content-section a {
    color: var(--light-primary);
    font-weight: 600;
    transition: color var(--t-fast);
}

.seo-content-section a:hover {
    color: var(--light-primary-hover);
    text-decoration: underline;
}

body.dark-mode .seo-content-section a {
    color: var(--dark-primary);
}

/* ============================================================
   ABOUT & CONTACT
   ============================================================ */
.about-container,
.contact-container {
    background-color: var(--light-surface);
    padding: 40px 44px;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--light-border);
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .about-container,
body.dark-mode .contact-container {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
}

.about-container h1,
.about-container h2 {
    color: var(--light-text);
    transition: color var(--t-base);
    border-bottom: 2px solid var(--light-primary);
    padding-bottom: 12px;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

body.dark-mode .about-container h1,
body.dark-mode .about-container h2 {
    color: var(--dark-text);
    border-bottom-color: var(--dark-primary);
}

.about-container p,
.about-container li {
    font-size: 1.02rem;
    line-height: 1.75;
    color: var(--light-text-soft);
    margin-bottom: 16px;
    transition: color var(--t-base);
}

body.dark-mode .about-container p,
body.dark-mode .about-container li {
    color: var(--dark-text-soft);
}

.about-container ul {
    list-style-type: '✔ ';
    padding-left: 20px;
}

.about-container li {
    padding-left: 10px;
}

.contact-container h1,
.contact-container h2 {
    color: var(--light-text);
    border-bottom: 2px solid var(--light-primary);
    padding-bottom: 12px;
    margin-top: 32px;
    margin-bottom: 20px;
    transition: color var(--t-base);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.contact-container h1:first-of-type {
    margin-top: 0;
}

body.dark-mode .contact-container h1,
body.dark-mode .contact-container h2 {
    color: var(--dark-text);
    border-bottom-color: var(--dark-primary);
}

.contact-container p {
    font-size: 1.02rem;
    line-height: 1.75;
    color: var(--light-text-soft);
    margin-bottom: 16px;
    transition: color var(--t-base);
}

body.dark-mode .contact-container p {
    color: var(--dark-text-soft);
}

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--light-text);
    font-size: 0.9rem;
    transition: color var(--t-base);
}

body.dark-mode .form-group label {
    color: var(--dark-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px 16px;
    border: 1.5px solid var(--light-border);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    box-sizing: border-box;
    background-color: var(--light-surface);
    color: var(--light-text);
    transition: border-color var(--t-fast), box-shadow var(--t-fast), background-color var(--t-base);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 0;
    border-color: var(--light-highlight);
    box-shadow: var(--shadow-glow);
}

body.dark-mode .form-group input,
body.dark-mode .form-group select,
body.dark-mode .form-group textarea {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    border-color: var(--dark-border);
}

body.dark-mode .form-group input:focus,
body.dark-mode .form-group select:focus,
body.dark-mode .form-group textarea:focus {
    border-color: var(--dark-highlight);
    box-shadow: 0 0 0 4px rgba(129, 140, 248, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.submit-btn {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff;
    padding: 13px 32px;
    border: none;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--t-base);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

#confirmationMessage {
    display: none;
    text-align: center;
    padding: 20px;
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    border-radius: var(--radius-lg);
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 20px;
}

body.dark-mode #confirmationMessage {
    background-color: #064e3b;
    color: #d1fae5;
    border-color: #065f46;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-section {
    margin-top: 40px;
}

.faq-item {
    margin-bottom: 24px;
    padding: 20px 24px;
    background: var(--light-surface-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--light-border-soft);
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .faq-item {
    background: var(--dark-surface-alt);
    border-color: var(--dark-border);
}

.faq-item h3 {
    color: var(--light-text);
    margin-bottom: 8px;
    font-weight: 700;
    font-size: 1.05rem;
    transition: color var(--t-base);
}

body.dark-mode .faq-item h3 {
    color: var(--dark-text);
}

/* ============================================================
   GAMES PAGE
   ============================================================ */
.games-container {
    text-align: center;
    padding: 48px 20px;
}

.games-container h1 {
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.games-intro-text {
    max-width: 800px;
    margin: 0 auto 48px;
    line-height: 1.7;
    color: var(--light-text-soft);
    font-size: 1.05rem;
    transition: color var(--t-base);
}

body.dark-mode .games-intro-text {
    color: var(--dark-text-soft);
}

.game-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
    max-width: 1200px;
    margin: 0 auto;
}

.game-card {
    background-color: var(--light-surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    padding: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform var(--t-base), box-shadow var(--t-base);
    border: 1px solid var(--light-border);
}

.game-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

body.dark-mode .game-card {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
}

.game-card img {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    border: 1px solid var(--light-border);
}

body.dark-mode .game-card img {
    border-color: var(--dark-border);
}

.game-card h3 {
    color: var(--light-text);
    margin-bottom: 10px;
    font-weight: 700;
    letter-spacing: -0.02em;
    transition: color var(--t-base);
}

body.dark-mode .game-card h3 {
    color: var(--dark-text);
}

.game-card p {
    color: var(--light-text-soft);
    line-height: 1.65;
    flex-grow: 1;
    margin-bottom: 20px;
    transition: color var(--t-base);
}

body.dark-mode .game-card p {
    color: var(--dark-text-soft);
}

body.dark-mode .game-card:hover {
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
}

/* ============================================================
   TYPING TEST PAGE
   ============================================================ */
.test-container {
    background-color: var(--light-surface);
    padding: 36px;
    border-radius: var(--radius-2xl);
    width: 100%;
    max-width: 920px;
    box-sizing: border-box;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--light-border);
    transition: background-color var(--t-base), color var(--t-base), border-color var(--t-base);
}

body.dark-mode .test-container {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
}

.test-container h1 {
    color: var(--light-text);
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -0.03em;
    transition: color var(--t-base);
}

body.dark-mode .test-container h1 {
    color: var(--dark-text);
}

.config-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    margin-bottom: 28px;
    color: var(--light-text-soft);
    font-weight: 600;
    transition: color var(--t-base);
}

body.dark-mode .config-bar {
    color: var(--dark-text-soft);
}

.config-bar p {
    margin: 0;
}

.time-selector {
    position: relative;
    background-color: var(--light-bg-alt);
    padding: 10px 18px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background-color var(--t-fast);
    font-size: 1rem;
    color: var(--light-text);
    z-index: 10;
    font-weight: 600;
}

.time-selector:hover {
    background-color: var(--light-primary-soft);
    color: var(--light-primary);
}

body.dark-mode .time-selector {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

body.dark-mode .time-selector:hover {
    background-color: var(--dark-primary-soft);
    color: var(--dark-primary);
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background-color: var(--light-surface);
    border: 1px solid var(--light-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 100%;
    z-index: 10;
    padding: 6px;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    padding: 10px 16px;
    cursor: pointer;
    text-align: left;
    font-weight: 600;
    color: var(--light-text);
    border-radius: var(--radius-md);
    transition: background-color var(--t-fast), color var(--t-fast);
}

.dropdown-item:hover {
    background-color: var(--light-primary-soft);
    color: var(--light-primary);
}

body.dark-mode .dropdown-menu {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
}

body.dark-mode .dropdown-item {
    color: var(--dark-text);
}

body.dark-mode .dropdown-item:hover {
    background-color: var(--dark-primary-soft);
    color: var(--dark-primary);
}

.test-area {
    position: relative;
    margin-bottom: 12px;
}

.text-display {
    color: var(--light-text-muted);
    padding: 24px;
    border: 1.5px solid var(--light-border);
    border-radius: var(--radius-xl);
    height: 120px;
    overflow-y: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
    pointer-events: none;
    transition: border-color var(--t-base), color var(--t-base), height var(--t-base), background-color var(--t-base);
    font-size: 1.7rem;
    line-height: 1.7;
    text-align: left;
    background-color: var(--light-surface-alt);
    font-family: var(--font-mono);
}

body.dark-mode .text-display {
    color: var(--dark-text-muted);
    border-color: var(--dark-border);
    background-color: var(--dark-bg);
}

.text-display::-webkit-scrollbar {
    display: none;
}

.text-display span {
    display: inline;
    padding: 2px 0;
    border-radius: 3px;
}

span.space {
    padding: 2px 0.25em;
}

#typed-text-display {
    width: 100%;
    margin-top: 12px;
    padding: 18px;
    border-radius: var(--radius-xl);
    border: 1.5px solid var(--light-border);
    font-family: var(--font-mono);
    background-color: var(--light-surface-alt);
    color: var(--light-text);
    font-size: 1.7rem;
    line-height: 1.7;
    text-align: left;
    box-sizing: border-box;
    transition: background-color var(--t-base), color var(--t-base), border-color var(--t-base);
}

body.dark-mode #typed-text-display {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    border-color: var(--dark-border);
}

.input-field {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    z-index: -1;
}

.overlay-message {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.75);
    color: var(--light-text);
    font-size: 2.2rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t-base);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    flex-direction: column;
    line-height: 1.2;
}

body.dark-mode .overlay-message {
    background-color: rgba(11, 17, 32, 0.8);
    color: var(--dark-text);
}

.overlay-message.show {
    opacity: 1;
    pointer-events: auto;
}

.overlay-message .resume-prompt {
    font-size: 1.15rem;
    font-weight: 500;
    margin-top: 16px;
    color: var(--light-text-soft);
}

body.dark-mode .overlay-message .resume-prompt {
    color: var(--dark-text-soft);
}

.stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
    margin: 28px 0;
    flex-wrap: wrap;
    min-height: 60px;
}

.stat {
    font-size: 1.05rem;
    padding: 14px 22px;
    border-radius: var(--radius-lg);
    min-width: 130px;
    position: relative;
    transition: background-color var(--t-base), border-color var(--t-base);
    flex: 1;
    border: 1.5px solid var(--light-border);
    background-color: var(--light-surface-alt);
    text-align: center;
}

body.dark-mode .stat {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
}

.stat.hidden {
    display: none;
}

.stat span {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--light-primary);
    letter-spacing: -0.02em;
}

body.dark-mode .stat span {
    color: var(--dark-primary);
}

.stat span.timer-value {
    color: #d946ef;
}

body.dark-mode .stat span.timer-value {
    color: #e879f9;
}

.stat p {
    margin: 0;
    color: var(--light-text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: color var(--t-base);
}

body.dark-mode .stat p {
    color: var(--dark-text-muted);
}

.correct {
    color: #10b981;
}

.incorrect {
    color: #ef4444;
    text-decoration: underline;
    text-decoration-color: #ef4444;
}

.current {
    background-color: rgba(99, 102, 241, 0.2);
}

span.space.current {
    background-color: rgba(99, 102, 241, 0.2);
}

body.dark-mode .current,
body.dark-mode span.space.current {
    background-color: rgba(129, 140, 248, 0.3);
}

#pause-resume-button {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    border: none;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    cursor: pointer;
    color: #fff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    transition: all var(--t-base);
    letter-spacing: -0.01em;
}

#pause-resume-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

#pause-resume-button:active:not(:disabled) {
    transform: translateY(0);
}

#pause-resume-button:disabled {
    background: #cbd5e1;
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

#reset-button {
    background: linear-gradient(135deg, #10b981, #059669);
    border: none;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    cursor: pointer;
    color: #fff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
    transition: all var(--t-base);
    letter-spacing: -0.01em;
}

#reset-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
}

#reset-button:active {
    transform: translateY(0);
}

/* ============================================================
   LESSON COMPLETED STYLING
   ============================================================ */
.lesson-dropdown option.lesson-completed {
    background-color: #d1fae5;
    color: #065f46;
    font-weight: 700;
}

body.dark-mode .lesson-dropdown option.lesson-completed {
    background-color: #064e3b;
    color: #a7f3d0;
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.content-wrapper {
    max-width: 820px;
    margin: 48px auto;
    padding: 24px;
}

.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 20px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .keyboard {
        display: none;
    }

    .header {
        padding: 28px 20px 24px;
    }
}

@media (max-width: 768px) {
    .home-container {
        padding: 12px;
    }

    .header {
        padding: 24px 18px 20px;
        border-radius: var(--radius-xl);
    }

    .lesson-container {
        padding: 20px 16px;
        border-radius: var(--radius-xl);
    }

    .controls {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }

    .icon-btn {
        min-width: 44px;
        height: 44px;
        padding: 10px;
    }

    .controls .stat-box {
        padding: 10px 16px;
        min-width: 70px;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .about-container,
    .contact-container {
        padding: 24px 20px;
        border-radius: var(--radius-xl);
    }

    .cta-button {
        display: inline-flex;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }

    .config-bar {
        flex-direction: column;
        gap: 12px;
    }

    .stats {
        flex-wrap: wrap;
    }

    .test-container {
        width: 100%;
        padding: 24px 18px;
        border-radius: var(--radius-xl);
    }

    .seo-content-section {
        padding: 24px 18px;
        margin: 32px auto;
        border-radius: var(--radius-xl);
    }

    .selectors-container {
        flex-direction: column;
        gap: 10px;
    }

    .lesson-selector {
        min-width: 100%;
    }

    #currentLine {
        padding: 18px 16px;
        border-radius: var(--radius-lg);
    }

    .completion-tip {
        font-size: 0.85rem;
        padding: 10px 16px;
    }

    .whatsapp-float {
        width: 52px;
        height: 52px;
        bottom: 20px;
        right: 20px;
    }

    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
}

@media (max-width: 480px) {
    .full-page-wrapper {
        padding: 8px;
    }

    .lesson-container {
        padding: 16px 12px;
    }

    .home-container {
        padding: 0 8px;
    }

    #currentLine {
        font-size: 1.05rem;
        padding: 14px 12px;
        line-height: 1.8;
        min-height: 70px;
    }

    .header h1 {
        font-size: 1.4rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .stat {
        min-width: 100px;
        padding: 10px 14px;
        font-size: 0.95rem;
    }

    .stat span {
        font-size: 1.5rem;
    }

    .text-display {
        font-size: 1.2rem;
        height: 90px;
        padding: 16px;
    }

    #typed-text-display {
        font-size: 1.2rem;
        padding: 14px;
    }

    .volume-slider {
        width: 90px;
    }

    .cta-button {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .seo-content-section h2 {
        font-size: 1.2rem;
    }

    .seo-content-section h3 {
        font-size: 1.05rem;
    }

    .seo-content-section p,
    .seo-content-section li {
        font-size: 0.92rem;
        text-align: left;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-height: 750px) {
    .main-content {
        padding-top: 20px;
        padding-bottom: 20px;
    }

    .test-container {
        padding: 20px;
    }

    .text-display {
        height: 70px;
        font-size: 1.2rem;
        line-height: 1.6;
    }

    #typed-text-display {
        font-size: 1.4rem;
    }

    .stats {
        margin: 16px 0;
        gap: 10px;
    }

    .stat {
        min-width: 120px;
        padding: 10px 16px;
    }

    .button-container {
        margin-top: 16px;
    }
}
/* ============================================================
   HOME STATISTICS SECTION
   ============================================================ */

.home-stats-section {
    background: var(--light-surface);
    border: 1px solid var(--light-border);
    border-radius: var(--radius-2xl);
    padding: 36px 32px;
    margin: 40px auto;
    max-width: 920px;
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .home-stats-section {
    background: var(--dark-surface);
    border-color: var(--dark-border);
}

.home-stats-header {
    text-align: center;
    margin-bottom: 32px;
}

.home-stats-header h2 {
    font-size: clamp(1.3rem, 3vw, 1.6rem);
    font-weight: 800;
    color: var(--light-text);
    margin: 0 0 8px;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.home-stats-header h2 i { color: var(--light-primary); }
body.dark-mode .home-stats-header h2 { color: var(--dark-text); }
body.dark-mode .home-stats-header h2 i { color: var(--dark-primary); }

.home-stats-header p {
    color: var(--light-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

body.dark-mode .home-stats-header p { color: var(--dark-text-muted); }

.home-stats-loading {
    text-align: center;
    padding: 40px 20px;
}

.home-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(102, 126, 234, 0.15);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: homeSpin 0.8s linear infinite;
    margin: 0 auto 14px;
}

@keyframes homeSpin { to { transform: rotate(360deg); } }

.home-stats-loading p {
    color: var(--light-text-muted);
    font-size: 0.9rem;
    margin: 0;
}

body.dark-mode .home-stats-loading p { color: var(--dark-text-muted); }

.home-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
    margin-bottom: 16px;
}

.home-stat-card {
    background: var(--light-surface-alt);
    border: 1px solid var(--light-border-soft);
    border-radius: var(--radius-xl);
    padding: 20px 16px;
    text-align: center;
    transition: transform var(--t-base), box-shadow var(--t-base), background-color var(--t-base);
    position: relative;
    overflow: hidden;
}

.home-stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    opacity: 0;
    transition: opacity var(--t-base);
}

.home-stat-card:hover::before { opacity: 1; }

.home-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

body.dark-mode .home-stat-card {
    background: var(--dark-surface-alt);
    border-color: var(--dark-border);
}

.home-stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    margin: 0 auto 12px;
}

.home-stat-icon.purple { background: rgba(102, 126, 234, 0.12); color: #667eea; }
.home-stat-icon.green { background: rgba(17, 153, 142, 0.12); color: #11998e; }
.home-stat-icon.blue { background: rgba(79, 172, 254, 0.12); color: #4facfe; }
.home-stat-icon.orange { background: rgba(245, 87, 108, 0.12); color: #f5576c; }

.home-stat-value {
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--light-text);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

body.dark-mode .home-stat-value { color: var(--dark-text); }

.home-stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--light-text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

body.dark-mode .home-stat-label { color: var(--dark-text-muted); }

.home-stat-sub {
    font-size: 0.7rem;
    color: var(--light-text-muted);
    margin-top: 6px;
    opacity: 0.75;
    font-weight: 500;
}

body.dark-mode .home-stat-sub { color: var(--dark-text-muted); }

.home-stats-grid-secondary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
    padding: 14px 16px;
    background: rgba(102, 126, 234, 0.05);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(102, 126, 234, 0.08);
}

body.dark-mode .home-stats-grid-secondary {
    background: rgba(102, 126, 234, 0.08);
    border-color: rgba(102, 126, 234, 0.15);
}

.home-stat-mini {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--light-text-soft);
    font-weight: 500;
}

.home-stat-mini i {
    color: #667eea;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.home-stat-mini-value {
    font-weight: 800;
    color: var(--light-text);
    font-size: 0.95rem;
}

body.dark-mode .home-stat-mini-value { color: var(--dark-text); }
body.dark-mode .home-stat-mini { color: var(--dark-text-soft); }

.home-stat-mini-label {
    color: var(--light-text-muted);
    font-size: 0.78rem;
}

body.dark-mode .home-stat-mini-label { color: var(--dark-text-muted); }

.home-stats-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.home-stats-panel {
    background: var(--light-surface-alt);
    border: 1px solid var(--light-border-soft);
    border-radius: var(--radius-xl);
    padding: 18px;
    transition: background-color var(--t-base), border-color var(--t-base);
}

body.dark-mode .home-stats-panel {
    background: var(--dark-surface-alt);
    border-color: var(--dark-border);
}

.home-stats-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 6px;
}

.home-stats-panel-header h3 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--light-text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.home-stats-panel-header h3 i {
    color: #667eea;
    font-size: 0.85rem;
}

body.dark-mode .home-stats-panel-header h3 { color: var(--dark-text); }

.home-stats-panel-sub {
    font-size: 0.7rem;
    color: var(--light-text-muted);
    font-weight: 500;
}

body.dark-mode .home-stats-panel-sub { color: var(--dark-text-muted); }

.home-stats-chart-wrap {
    position: relative;
    height: 160px;
    width: 100%;
}

.home-stats-chart-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

.home-stats-chart-empty {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text-muted);
}

.home-stats-chart-empty i {
    font-size: 1.8rem;
    opacity: 0.3;
    margin-bottom: 6px;
}

.home-stats-chart-empty p { font-size: 0.8rem; margin: 0; }

body.dark-mode .home-stats-chart-empty { color: var(--dark-text-muted); }

.home-stats-difficult-keys {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-height: 80px;
    align-content: flex-start;
}

.home-key-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 700;
    transition: transform var(--t-fast);
    cursor: default;
}

.home-key-chip:hover { transform: scale(1.05); }

.home-key-chip .home-key-char {
    font-size: 0.95rem;
    font-weight: 900;
    font-family: var(--font-mono);
}

.home-key-chip .home-key-count {
    font-size: 0.65rem;
    opacity: 0.75;
    font-weight: 600;
}

.home-key-chip.high {
    background: rgba(239, 68, 68, 0.12);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.home-key-chip.medium {
    background: rgba(245, 158, 11, 0.12);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.home-key-chip.low {
    background: rgba(59, 130, 246, 0.12);
    color: #2563eb;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

body.dark-mode .home-key-chip.high { color: #f87171; }
body.dark-mode .home-key-chip.medium { color: #fbbf24; }
body.dark-mode .home-key-chip.low { color: #60a5fa; }

.home-stats-key-legend {
    display: flex;
    gap: 12px;
    margin-top: 10px;
    font-size: 0.65rem;
    color: var(--light-text-muted);
    flex-wrap: wrap;
}

.home-stats-key-legend span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.home-key-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.home-key-dot.high { background: #dc2626; }
.home-key-dot.medium { background: #d97706; }
.home-key-dot.low { background: #2563eb; }

body.dark-mode .home-stats-key-legend { color: var(--dark-text-muted); }

.home-stats-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 180px;
    overflow-y: auto;
    padding-right: 4px;
}

.home-stats-list::-webkit-scrollbar { width: 4px; }
.home-stats-list::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.3);
    border-radius: 4px;
}

.home-stats-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 12px;
    background: var(--light-surface);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    transition: background-color var(--t-fast);
}

.home-stats-list-item:hover { background: rgba(102, 126, 234, 0.06); }

body.dark-mode .home-stats-list-item { background: var(--dark-surface); }
body.dark-mode .home-stats-list-item:hover { background: rgba(102, 126, 234, 0.1); }

.home-stats-list-item .home-list-main {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.home-stats-list-item .home-list-icon {
    width: 26px;
    height: 26px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    background: rgba(102, 126, 234, 0.12);
    color: #667eea;
    flex-shrink: 0;
}

.home-stats-list-item .home-list-title {
    font-weight: 600;
    color: var(--light-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

body.dark-mode .home-stats-list-item .home-list-title { color: var(--dark-text); }

.home-stats-list-item .home-list-meta {
    font-size: 0.7rem;
    color: var(--light-text-muted);
    white-space: nowrap;
}

body.dark-mode .home-stats-list-item .home-list-meta { color: var(--dark-text-muted); }

.home-stats-list-item .home-list-badge {
    font-weight: 800;
    font-size: 0.78rem;
    padding: 2px 10px;
    border-radius: 50px;
    white-space: nowrap;
}

.home-list-badge.excellent { background: rgba(46, 204, 113, 0.15); color: #2ecc71; }
.home-list-badge.good { background: rgba(52, 152, 219, 0.15); color: #3498db; }
.home-list-badge.average { background: rgba(241, 196, 15, 0.15); color: #f1c40f; }
.home-list-badge.poor { background: rgba(231, 76, 60, 0.15); color: #e74c3c; }

.home-stats-empty-mini {
    text-align: center;
    padding: 20px 10px;
    color: var(--light-text-muted);
}

.home-stats-empty-mini i {
    font-size: 1.5rem;
    opacity: 0.3;
    display: block;
    margin-bottom: 6px;
}

.home-stats-empty-mini p { font-size: 0.78rem; margin: 0; }

body.dark-mode .home-stats-empty-mini { color: var(--dark-text-muted); }

/* Course Progress Bars */
.home-stats-courses {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.home-course-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.home-course-row-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

.home-course-name {
    font-weight: 600;
    color: var(--light-text);
}

body.dark-mode .home-course-name { color: var(--dark-text); }

.home-course-count {
    font-weight: 700;
    color: var(--light-text-muted);
    font-size: 0.75rem;
}

body.dark-mode .home-course-count { color: var(--dark-text-muted); }

.home-course-bar-track {
    height: 6px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 4px;
    overflow: hidden;
}

body.dark-mode .home-course-bar-track { background: rgba(255, 255, 255, 0.08); }

.home-course-bar-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: width 0.6s ease;
    width: 0%;
}

.home-course-bar-fill.complete {
    background: linear-gradient(90deg, #11998e, #38ef7d);
}

.home-stats-login-prompt {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 14px 20px;
    background: linear-gradient(135deg, #fff3cd 0%, #ffe8a1 100%);
    border: 1px solid #ffc107;
    border-radius: var(--radius-lg);
    margin-bottom: 18px;
    color: #856404;
    font-size: 0.88rem;
    font-weight: 500;
}

.home-stats-login-prompt i { font-size: 1.05rem; }

.home-stats-login-btn {
    background: #667eea;
    color: #fff;
    padding: 8px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.82rem;
    transition: all var(--t-fast);
}

.home-stats-login-btn:hover {
    background: #764ba2;
    transform: translateY(-1px);
}

.home-stats-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.home-stats-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    transition: all var(--t-base);
    min-height: 44px;
}

.home-stats-action-btn.primary {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.home-stats-action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.home-stats-action-btn.secondary {
    background: var(--light-surface-alt);
    color: var(--light-text);
    border: 1px solid var(--light-border);
}

.home-stats-action-btn.secondary:hover {
    background: var(--light-primary-soft);
    border-color: var(--light-primary);
    transform: translateY(-2px);
}

body.dark-mode .home-stats-action-btn.secondary {
    background: var(--dark-surface-alt);
    color: var(--dark-text);
    border-color: var(--dark-border);
}

.home-stats-empty {
    text-align: center;
    padding: 48px 20px;
}

.home-stats-empty-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(102, 126, 234, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.6rem;
    color: #667eea;
}

.home-stats-empty h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--light-text);
    margin: 0 0 6px;
}

body.dark-mode .home-stats-empty h3 { color: var(--dark-text); }

.home-stats-empty p {
    color: var(--light-text-muted);
    font-size: 0.88rem;
    margin: 0 0 20px;
}

body.dark-mode .home-stats-empty p { color: var(--dark-text-muted); }

@media (max-width: 768px) {
    .home-stats-section {
        padding: 20px 14px;
        margin: 28px auto;
        border-radius: var(--radius-xl);
    }

    .home-stats-header { margin-bottom: 20px; }

    .home-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .home-stat-card { padding: 14px 12px; }

    .home-stat-icon {
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
        margin-bottom: 8px;
    }

    .home-stat-value { font-size: 1.4rem; }
    .home-stat-label { font-size: 0.65rem; }
    .home-stat-sub { font-size: 0.62rem; }

    .home-stats-grid-secondary {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        padding: 10px 12px;
    }

    .home-stat-mini { font-size: 0.78rem; }

    .home-stats-two-col {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .home-stats-chart-wrap { height: 140px; }
    .home-stats-panel { padding: 14px; }
    .home-stats-panel-header h3 { font-size: 0.82rem; }
    .home-stats-list { max-height: 150px; }
    .home-stats-list-item { padding: 6px 10px; font-size: 0.75rem; }

    .home-stats-action-btn {
        width: 100%;
        justify-content: center;
        padding: 11px 20px;
        font-size: 0.82rem;
    }
}

@media (max-width: 480px) {
    .home-stats-section {
        padding: 16px 10px;
        margin: 20px auto;
    }

    .home-stats-grid { gap: 8px; }
    .home-stat-card { padding: 12px 10px; }
    .home-stat-value { font-size: 1.2rem; }
    .home-stat-label { font-size: 0.6rem; }
    .home-stat-sub { display: none; }

    .home-key-chip { font-size: 0.7rem; padding: 5px 10px; }
    .home-key-chip .home-key-char { font-size: 0.85rem; }

    .home-stats-list-item .home-list-meta { display: none; }
}