/* ============================================================
   Adıǵe Pçağematiḱ — Number to Words
   Theme & layout matching Talking Texts style
   ============================================================ */

/* ---------- CSS Variables: Light Theme (default) ---------- */
:root {
    /* Backgrounds */
    --bg-primary: #ede9fe;
    --bg-secondary: #f3f0ff;
    --bg-card: #ffffff;
    --shadow-color: rgba(99, 102, 241, 0.1);
    --overlay-color: rgba(0, 0, 0, 0.4);

    /* Text */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;

    /* Highlights & Segments */
    --highlight-bg: #ffd43b;
    --highlight-text: #1a202c;

    /* Borders */
    --border-color: #c7d2fe;
    --border-light: #e0e7ff;

    /* Buttons */
    --btn-bg: #e0e7ff;
    --btn-hover: #c7d2fe;
    --btn-active: #a5b4fc;

    /* Focus */
    --focus-ring: #6366f1;

    /* Errors */
    --error-bg: #fee2e2;
    --error-text: #dc2626;
    --error-border: #fca5a5;

    /* Accent */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);

    /* Layout */
    --max-content-width: 800px;
    --top-bar-height: 60px;
    --controls-height: 80px;

    /* Typography */
    --font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 18px;
    --font-size-sm: 14px;
    --font-size-xs: 12px;
    --line-height: 1.7;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ---------- CSS Variables: Dark Theme ---------- */
[data-theme="dark"] {
    --bg-primary: #1e1e1e;
    --bg-secondary: #2a2a2a;
    --bg-card: #2d2d2d;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --overlay-color: rgba(0, 0, 0, 0.7);

    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;

    --highlight-bg: #b8860b;
    --highlight-text: #1e1e1e;

    --border-color: #404040;
    --border-light: #363636;

    --btn-bg: #3a3a3a;
    --btn-hover: #4a4a4a;
    --btn-active: #555555;

    --error-bg: #450a0a;
    --error-text: #fca5a5;
    --error-border: #7f1d1d;

    --accent-gradient: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #e879f9 100%);
}

/* ---------- Reset & Base ---------- */
[hidden] {
    display: none !important;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: var(--line-height);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ---------- App Container ---------- */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---------- App Header ---------- */
.app-header {
    background: var(--accent-gradient);
    color: white;
    padding: 16px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.app-header-content {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: var(--max-content-width);
    margin: 0 auto;
}

.app-logo {
    height: 36px;
    width: auto;
    border-radius: 4px;
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.app-logo:hover {
    transform: scale(1.05);
}

.app-header-text h1 {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

/* ---------- Main Content ---------- */
.main-content {
    flex: 1;
    max-width: var(--max-content-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* ---------- Top Bar ---------- */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    height: var(--top-bar-height);
    gap: 12px;
}

.top-bar-spacer {
    flex: 1;
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--btn-bg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast),
                transform var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--btn-hover);
    color: var(--text-primary);
    transform: scale(1.05);
}

.sun-icon { display: block; }
.moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: none; }
[data-theme="dark"] .moon-icon { display: block; }

/* ---------- Section Labels ---------- */
.section-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ---------- Input Section ---------- */
.input-section {
    margin-bottom: 20px;
}

.input-textarea {
    width: 100%;
    min-height: 130px;
    padding: 16px;
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-textarea::placeholder {
    color: var(--text-muted);
}

.input-textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* ---------- Examples Section ---------- */
.examples-section {
    margin-top: 10px;
    border: 1px solid var(--border-light);
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-secondary);
}

.examples-summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--accent-primary);
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: background var(--transition-fast);
}

.examples-summary::-webkit-details-marker {
    display: none;
}

.examples-summary::after {
    content: '▸';
    margin-left: auto;
    font-size: 12px;
    transition: transform var(--transition-fast);
}

.examples-section[open] .examples-summary::after {
    transform: rotate(90deg);
}

.examples-summary:hover {
    background: var(--btn-bg);
}

.examples-content {
    padding: 0 16px 14px;
}

.examples-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.examples-table th {
    text-align: left;
    padding: 6px 10px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.examples-table td {
    padding: 5px 10px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
}

.examples-table code {
    font-family: 'Noto Sans Mono', monospace;
    font-size: var(--font-size-xs);
    background: var(--btn-bg);
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
}

/* Second info section spacing */
.examples-section + .examples-section {
    margin-top: 8px;
}

/* ---------- Language Tabs ---------- */
.lang-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0;
}

.lang-tab {
    padding: 6px 14px;
    font-size: var(--font-size-xs);
    font-family: var(--font-family);
    font-weight: 500;
    color: var(--text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    margin-bottom: -1px;
}

.lang-tab:hover {
    color: var(--text-primary);
}

.lang-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.lang-panel {
    display: none;
}

.lang-panel.active {
    display: block;
}

.lang-panel p {
    font-size: var(--font-size-sm);
    line-height: 1.65;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.lang-panel em {
    font-style: italic;
    color: var(--text-secondary);
}

.lang-panel strong {
    font-weight: 600;
    color: var(--accent-primary);
}

.system-table {
    margin-top: 4px;
}

/* ---------- Output Section ---------- */
.output-section {
    margin-bottom: 20px;
}

.output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.output-header .section-label {
    margin-bottom: 0;
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast),
                transform var(--transition-fast);
}

.copy-btn:hover:not(:disabled) {
    background: var(--btn-hover);
    color: var(--accent-primary);
    transform: scale(1.08);
}

.copy-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.copy-btn.copied .copy-icon { display: none; }
.copy-btn.copied .check-icon { display: block !important; color: #22c55e; }

.output-area {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    min-height: 100px;
    margin-top: 8px;
    overflow-y: auto;
    max-height: 300px;
    transition: border-color var(--transition-fast);
}

.placeholder-text {
    color: var(--text-muted);
    font-style: italic;
}

.output-content {
    font-size: 1rem;
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Segment spans */
.segment {
    cursor: pointer;
    padding: 2px 0;
    border-radius: 3px;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.segment:hover {
    background: var(--btn-bg);
}

.segment.active {
    background: var(--highlight-bg);
    color: var(--highlight-text);
}

/* ---------- Playback Controls ---------- */
.playback-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 0;
    position: sticky;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 50;
}

/* Loading indicator */
.loading-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Control buttons */
.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast),
                opacity var(--transition-fast);
}

.control-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.control-btn.play-btn {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.control-btn.play-btn:hover:not(:disabled) {
    transform: scale(1.08);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.control-btn.stop-btn {
    background: var(--btn-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    width: 44px;
    height: 44px;
}

.control-btn.stop-btn:hover:not(:disabled) {
    background: var(--btn-hover);
    color: var(--text-primary);
}

/* Play/Pause icon toggle */
.play-btn .pause-icon { display: none; }
.play-btn.playing .play-icon { display: none; }
.play-btn.playing .pause-icon { display: block; }

/* ---------- Speaker Dropdown ---------- */
.custom-speaker-dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.dropdown-toggle:hover:not(:disabled) {
    background: var(--btn-hover);
    border-color: var(--accent-primary);
}

.dropdown-toggle:disabled {
    opacity: 0.5;
    cursor: default;
}

.dropdown-arrow {
    font-size: 12px;
    transition: transform 0.2s ease;
}

.custom-speaker-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-options {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 0;
    min-width: 220px;
    margin-bottom: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    max-height: 240px;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 0 -4px 20px var(--shadow-color);
    list-style: none;
}

.custom-speaker-dropdown.open .dropdown-options {
    display: block;
}

.dropdown-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: background var(--transition-fast);
    white-space: nowrap;
}

.dropdown-option:hover {
    background: var(--btn-bg);
}

.dropdown-option.selected {
    color: var(--accent-primary);
    font-weight: 600;
}

.speaker-name {
    flex: 1;
    text-align: left;
}

.speaker-preview-btn {
    flex-shrink: 0;
    margin-left: auto;
}

.speaker-preview-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--accent-gradient);
    color: white;
    cursor: pointer;
    font-size: 12px;
    transition: transform var(--transition-fast);
}

.speaker-preview-btn:hover {
    transform: scale(1.1);
}

.speaker-preview-btn .preview-spinner {
    display: none;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.speaker-preview-btn.loading .preview-play-icon { display: none; }
.speaker-preview-btn.loading .preview-spinner { display: inline-block; }

.speaker-preview-btn.playing {
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* ---------- Error Banner ---------- */
.error-banner {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--error-bg);
    color: var(--error-text);
    border: 1px solid var(--error-border);
    border-radius: 12px;
    font-size: var(--font-size-sm);
    max-width: 90%;
    z-index: 200;
    animation: slideUp 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.error-message {
    flex: 1;
}

.retry-btn {
    padding: 6px 14px;
    border: 1px solid var(--error-text);
    border-radius: 6px;
    background: transparent;
    color: var(--error-text);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition-fast);
}

.retry-btn:hover {
    background: rgba(220, 38, 38, 0.1);
}

.dismiss-btn {
    background: none;
    border: none;
    color: var(--error-text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.dismiss-btn:hover {
    opacity: 1;
}

/* ---------- Toast Notification ---------- */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--accent-gradient);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 1000;
    pointer-events: none;
    animation: toastFadeIn 0.3s ease, toastFadeOut 0.3s ease 1.7s forwards;
    box-shadow: 0 4px 20px var(--shadow-color);
}

@keyframes toastFadeIn {
    from { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
    to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes toastFadeOut {
    from { opacity: 1; }
    to   { opacity: 0; }
}

/* ---------- App Footer ---------- */
.app-footer {
    background: var(--accent-gradient);
    color: rgba(255, 255, 255, 0.85);
    text-align: center;
    padding: 14px 20px;
    font-size: var(--font-size-sm);
    margin-top: auto;
}

.app-footer a {
    color: white;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.app-footer a:hover {
    text-decoration-thickness: 2px;
}

/* ---------- Responsive: Mobile ---------- */
@media (max-width: 767px) {
    html {
        font-size: 16px;
    }

    .app-header {
        padding: 12px 16px;
    }

    .app-header-text h1 {
        font-size: 1.1rem;
    }

    .app-logo {
        height: 28px;
    }

    .main-content {
        padding: 0 14px;
    }

    .input-textarea {
        min-height: 110px;
        padding: 12px;
        font-size: 0.95rem;
    }

    .output-area {
        padding: 12px;
        max-height: 250px;
    }

    .playback-controls {
        gap: 8px;
        padding: 12px 0;
    }

    .dropdown-toggle {
        padding: 8px 12px;
        font-size: var(--font-size-xs);
    }

    .control-btn.play-btn {
        width: 46px;
        height: 46px;
    }

    .control-btn.stop-btn {
        width: 38px;
        height: 38px;
    }

    .examples-table th,
    .examples-table td {
        padding: 4px 6px;
        font-size: var(--font-size-xs);
    }

    .error-banner {
        bottom: 80px;
        padding: 10px 14px;
        gap: 8px;
    }

    .app-footer {
        font-size: var(--font-size-xs);
        padding: 10px 14px;
    }
}

/* ---------- Scrollbar Styling ---------- */
.output-area::-webkit-scrollbar,
.dropdown-options::-webkit-scrollbar {
    width: 6px;
}

.output-area::-webkit-scrollbar-track,
.dropdown-options::-webkit-scrollbar-track {
    background: transparent;
}

.output-area::-webkit-scrollbar-thumb,
.dropdown-options::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.output-area::-webkit-scrollbar-thumb:hover,
.dropdown-options::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}