/* ==========================================================================
   Dynamic Theme Variable Configurations
   ========================================================================== */
:root {
    /* Default Native Midnight Theme System Palette */
    --bg: #0b0f1a;
    --card-bg: rgba(30, 41, 59, 0.5);
    --input-bg: #020617;
    --input-border: #1e293b;
    --select-bg: #0f172a;
    --select-border: #334155;
    --accent: #22d3ee;
    --accent-btn-text: #000000;
    --success: #10b981;
    --error: #f43f5e;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --untyped-text: #64748b;
    
    /* Modal Specifiers */
    --modal-overlay: rgba(10, 10, 14, 0.8);
    --modal-box-bg: rgba(15, 23, 42, 0.95);
    --modal-accent-header: #ffd700;
    --perf-box-bg: rgba(0, 0, 0, 0.25);
    --main-score-gradient: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(168, 85, 247, 0.25));
}

[data-theme="light"] {
    /* Refined Clean Daylight Theme System Palette */
    --bg: #f1f5f9;
    --card-bg: rgba(255, 255, 255, 0.75);
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --select-bg: #ffffff;
    --select-border: #cbd5e1;
    --accent: #06b6d4;
    --accent-btn-text: #ffffff;
    --success: #16a34a;
    --error: #dc2626;
    --text-main: #0f172a;
    --text-dim: #475569;
    --untyped-text: #94a3b8;

    /* Modal Specifiers */
    --modal-overlay: rgba(15, 23, 42, 0.45);
    --modal-box-bg: rgba(255, 255, 255, 0.98);
    --modal-accent-header: #b45309;
    --perf-box-bg: #f8fafc;
    --main-score-gradient: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
}

/* ==========================================================================
   Layout Tweaks Supporting Light Mode Palette Transition Modifiers
   ========================================================================== */
body {
    margin: 0;
    font-family: 'Inter', 'Noto Sans Sinhala', sans-serif;
    background: var(--bg);
    color: var(--text-main);
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Glassmorphism Background Decoration */
.glass-bg {
    position: fixed;
    top: -10%; left: -10%;
    width: 40%; height: 40%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.15) 0%, rgba(11, 15, 26, 0) 70%);
    z-index: -1;
}

.container {
    width: 92%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 0;
}

/* Header UI */
.main-header {
    text-align: center;
    margin-bottom: 40px;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(34, 211, 238, 0.1);
    color: var(--accent);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 10px;
}

h1 span {
    color: var(--accent);
}

/* Theme Button Positioning Styles */
.theme-toggle-container {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 16px;
}

.btn-theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--select-border);
    color: var(--text-main);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    backdrop-filter: blur(8px);
}

.btn-theme-toggle:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

/* Dashboard Layout */
.typing-dashboard {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 30px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transition: background 0.3s ease, border-color 0.3s ease;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

select {
    background: var(--select-bg);
    border: 1px solid var(--select-border);
    padding: 12px 16px;
    border-radius: 12px;
    color: var(--text-main);
    font-size: 14px;
    transition: all 0.3s ease;
}

select:focus {
    border-color: var(--accent);
    outline: none;
}

/* Buttons */
.btn-primary {
    background: var(--accent);
    color: var(--accent-btn-text);
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover { transform: translateY(-2px); opacity: 0.9; }

.btn-secondary {
    background: transparent;
    border: 1px solid var(--select-border);
    color: var(--text-main);
    padding: 12px 24px;
    border-radius: 12px;
    margin-left: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--text-dim);
}

/* Typing Core Space rendering */
#textDisplay {
    font-size: 24px;
    line-height: 1.6;
    padding: 25px;
    background: var(--input-bg);
    border-radius: 18px;
    margin-bottom: 20px;
    min-height: 100px;
    border: 1px solid var(--input-border);
    transition: background 0.3s ease;
}

textarea {
    width: 100%;
    height: 140px;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 18px;
    padding: 20px;
    color: var(--text-main);
    font-size: 20px;
    resize: none;
    transition: all 0.3s ease;
}

textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.1);
    outline: none;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.stat-card {
    background: rgba(255,255,255,0.03);
    padding: 20px;
    border-radius: 18px;
    text-align: center;
    border: 1px solid var(--input-border);
}

.stat-label { color: var(--text-dim); font-size: 13px; }
.stat-card h2 { margin: 5px 0 0; font-size: 32px; color: var(--text-main); }
.stat-card.accent h2 { color: var(--accent); }
.stat-card.danger h2 { color: var(--error); }

/* Resources Section */
.resources-section { margin-top: 60px; }
.section-title { text-align: center; margin-bottom: 30px; font-size: 1.5rem; }

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.link-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-main);
    border: 1px solid var(--input-border);
    transition: all 0.3s ease;
}

.link-card:hover { background: rgba(255,255,255,0.08); transform: scale(1.02); }
.link-card .icon { font-size: 2rem; margin-bottom: 15px; }

/* Footer Overwrite System */
.footer-seo {
    background: var(--input-bg);
    color: var(--text-dim);
    margin-top: 80px;
    border-top: 1px solid var(--input-border);
    padding: 40px 0;
}

.seo-text h2, .seo-text h3 { color: var(--text-main); }

@media (max-width: 768px) {
    .toolbar { flex-direction: column; align-items: stretch; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* Dynamic Live Typing Tracking Elements */
#textDisplay span {
    position: relative;
    transition: all 0.1s ease;
    color: var(--untyped-text);
}

#textDisplay span.correct {
    color: var(--success);
    text-shadow: 0 0 8px rgba(34, 197, 94, 0.2);
}

#textDisplay span.wrong {
    color: var(--error);
    background-color: rgba(239, 68, 68, 0.15);
    border-radius: 2px;
}

/* Active Cursor tracking highlighter block */
#textDisplay span.current {
    border-bottom: 2px solid var(--accent);
    color: var(--text-main);
}

/* ==========================================================================
   Modern Customized Overlaid Score Modal Structural Layout
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--modal-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease-in-out;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: var(--modal-box-bg);
    border: 1px solid var(--input-border);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3);
    border-radius: 24px;
    width: 90%;
    max-width: 520px;
    padding: 36px;
    text-align: center;
    transform: scale(0.92);
    transition: transform 0.3s ease-in-out;
    color: var(--text-main);
}

.modal-overlay.active .modal-card {
    transform: scale(1);
}

.modal-header h3 {
    font-size: 2rem;
    margin: 0 0 6px 0;
    color: var(--modal-accent-header);
}

.modal-header p {
    color: var(--text-dim);
    font-size: 0.95rem;
    margin: 0 0 28px 0;
}

.modal-perf-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.perf-box {
    background: var(--perf-box-bg);
    border-radius: 16px;
    padding: 18px;
    border: 1px solid var(--input-border);
}

.perf-box.main-score {
    grid-column: span 2;
    background: var(--main-score-gradient);
    border: 1px solid var(--accent);
}

.perf-label {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    margin-bottom: 6px;
}

.perf-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

.main-score .perf-value {
    font-size: 3.2rem;
    color: var(--accent);
}

.main-score .perf-value small {
    font-size: 1.4rem;
    color: var(--text-main);
    font-weight: 400;
}

.modal-footer {
    display: flex;
    justify-content: center;
}