@import url('https://fonts.googleapis.com/css2?family=Amiri:ital,wght@0,400;0,700;1,400&family=Inter:wght@300;400;500;600;700&family=Noto+Naskh+Arabic:wght@400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Scheherazade+New:wght@400;600;700&display=swap');

:root, [data-theme="dark"] {
    --bg-primary: #0a0f1d;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.75);
    --border-color: rgba(255, 255, 255, 0.1);
    
    --accent-emerald: #10b981;
    --accent-emerald-glow: rgba(16, 185, 129, 0.25);
    --accent-gold: #f59e0b;
    --accent-gold-glow: rgba(245, 158, 11, 0.2);
    --accent-cyan: #06b6d4;

    --vk-key-bg: rgba(255, 255, 255, 0.04);
    --vk-key-border: rgba(255, 255, 255, 0.1);
    --vk-key-hover: rgba(16, 185, 129, 0.15);
    --vk-char-color: #a7f3d0;
    --vk-hint-color: #94a3b8;

    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --output-pegon-color: #a7f3d0;

    --font-ui: 'Outfit', 'Inter', sans-serif;
    --font-pegon: 'Scheherazade New', 'Noto Naskh Arabic', 'Amiri', serif;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 25px rgba(16, 185, 129, 0.15);
}

[data-theme="light"] {
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.1);
    
    --accent-emerald: #059669;
    --accent-emerald-glow: rgba(5, 150, 105, 0.15);
    --accent-gold: #d97706;
    --accent-gold-glow: rgba(217, 119, 6, 0.15);
    --accent-cyan: #0891b2;

    --vk-key-bg: #ffffff;
    --vk-key-border: #cbd5e1;
    --vk-key-hover: #e2e8f0;
    --vk-char-color: #047857;
    --vk-hint-color: #64748b;

    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --output-pegon-color: #047857;

    --shadow-soft: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 20px rgba(5, 150, 105, 0.12);
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(245, 158, 11, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header & Navbar */
header {
    background: var(--bg-secondary);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-emerald), var(--accent-cyan));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-pegon);
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-emerald-glow);
}

.brand-text h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.brand-text p {
    font-size: 11px;
    color: var(--text-secondary);
}

.controls-bar {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-toggle-theme, .btn-toggle-kbd {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-toggle-kbd {
    color: var(--accent-cyan);
    border-color: rgba(6, 182, 212, 0.3);
    background: rgba(6, 182, 212, 0.08);
}

.btn-toggle-theme:hover {
    background: var(--bg-secondary);
    border-color: var(--text-muted);
}

.btn-toggle-kbd:hover {
    background: rgba(6, 182, 212, 0.2);
}

.hidden {
    display: none !important;
}

.theme-icon {
    transition: transform 0.3s ease;
}

.theme-btn:hover .theme-icon {
    transform: rotate(15deg);
}

/* Main Layout */
main {
    max-width: 1400px;
    width: 100%;
    margin: 20px auto;
    padding: 0 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Settings Toolbar */
.toolbar-row {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.options-group {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.option-select {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.info-tooltip {
    cursor: help;
    font-size: 14px;
    margin-left: 4px;
    opacity: 0.8;
}

select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-ui);
    font-size: 13px;
    outline: none;
    cursor: pointer;
    font-weight: 600;
}

select:focus {
    border-color: var(--accent-emerald);
}

/* Split Pane Editor */
.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    min-height: 420px;
}

.pane {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: border-color 0.3s ease;
}

.pane:focus-within {
    border-color: rgba(16, 185, 129, 0.4);
    box-shadow: var(--shadow-glow);
}

.pane-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pane-title {
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.pane-title span.badge {
    background: var(--accent-emerald-glow);
    color: var(--accent-emerald);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}

.editable-badge {
    background: rgba(245, 158, 11, 0.15) !important;
    color: var(--accent-gold) !important;
}

.pane-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Gemini-Style Minimalist Copy & Action Buttons */
.btn-gemini {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.btn-gemini:hover {
    background: var(--accent-emerald-glow);
    border-color: var(--accent-emerald);
    color: var(--accent-emerald);
    transform: translateY(-1px);
}

.btn-gemini-icon {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-gemini-icon:hover {
    background: var(--accent-emerald-glow);
    border-color: var(--accent-emerald);
    color: var(--accent-emerald);
}

.pane-content {
    flex: 1;
    display: flex;
}

textarea, .output-area {
    width: 100%;
    height: 100%;
    min-height: 340px;
    padding: 20px;
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    color: var(--text-primary);
}

textarea {
    font-family: var(--font-ui);
    font-size: 15px;
    line-height: 1.7;
}

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

.output-area {
    font-family: var(--font-pegon);
    font-size: 28px;
    line-height: 2.2;
    direction: rtl;
    text-align: right;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-y: auto;
    color: var(--output-pegon-color);
}

/* Glassmorphism Keyboard Drawer */
.keyboard-drawer {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 18px;
    display: none;
    flex-direction: column;
    gap: 14px;
    box-shadow: var(--shadow-soft);
    animation: fadeIn 0.25s ease;
}

.keyboard-drawer.show {
    display: flex;
}

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

.kbd-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.kbd-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-cyan);
}

.kbd-target-select {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.target-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.target-badge.active {
    background: var(--accent-emerald-glow);
    border-color: var(--accent-emerald);
    color: var(--accent-emerald);
    font-weight: 600;
}

.kbd-rows {
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
}

.kbd-row {
    display: flex;
    justify-content: center;
    gap: 6px;
    flex-wrap: nowrap;
    direction: rtl;
    min-width: max-content;
}

/* Key Button Styling */
.vk-key {
    background: var(--vk-key-bg);
    border: 1px solid var(--vk-key-border);
    border-radius: 8px;
    min-width: 44px;
    height: 54px;
    padding: 4px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
}

.vk-key:hover {
    background: var(--vk-key-hover);
    border-color: var(--accent-emerald);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-emerald-glow);
}

.vk-key:active {
    transform: translateY(0);
}

.vk-hint {
    font-family: var(--font-ui);
    font-size: 10px;
    font-weight: 500;
    color: var(--vk-hint-color);
    line-height: 1;
    margin-top: 2px;
    direction: ltr;
}

.vk-char {
    font-family: var(--font-pegon);
    font-size: 22px;
    font-weight: 600;
    color: var(--vk-char-color);
    line-height: 1;
    margin-bottom: 2px;
}

/* Special Pegon Keys */
.vk-key.special {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
}

.vk-key.special .vk-char {
    color: var(--accent-gold);
}

.vk-key.special:hover {
    background: rgba(245, 158, 11, 0.25);
    border-color: var(--accent-gold);
}

.vk-key.harakat .vk-char {
    color: var(--accent-cyan);
}

.vk-key.digit .vk-char {
    color: var(--text-primary);
}

.vk-key.punc .vk-char {
    color: var(--text-secondary);
}

.v-divider {
    width: 1px;
    height: 44px;
    background: var(--border-color);
    margin: 0 4px;
    align-self: center;
}

/* Bottom Section: Arabic Loanwords List */
.arabic-dict-section {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow-soft);
}

.dict-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.dict-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.dict-section-title h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-gold);
}

.dict-count-badge {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-gold);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.dict-action-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.dict-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.add-word-card, .search-word-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.add-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 8px;
}

.add-form-grid input, .search-word-card input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
}

.add-form-grid input[dir="rtl"] {
    font-family: var(--font-pegon);
    font-size: 16px;
}

.btn-add {
    background: var(--accent-emerald);
    color: #fff;
    border: none;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.btn-add:hover {
    opacity: 0.9;
}

/* Interactive Words Cards Grid */
.words-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 10px;
    max-height: 380px;
    overflow-y: auto;
    padding-right: 4px;
}

.word-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.word-card:hover {
    background: var(--accent-emerald-glow);
    border-color: var(--accent-emerald);
    transform: translateY(-1px);
}

.word-info {
    display: flex;
    flex-direction: column;
}

.word-latin {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.word-pegon {
    font-family: var(--font-pegon);
    font-size: 19px;
    color: var(--output-pegon-color);
    direction: rtl;
}

.word-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.copy-gemini-mini {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 4px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.copy-gemini-mini:hover {
    color: var(--accent-emerald);
    background: var(--accent-emerald-glow);
}

.btn-del-word {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 14px;
    padding: 3px;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.btn-del-word:hover {
    opacity: 1;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--accent-emerald);
    color: #fff;
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.4);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 2000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

footer {
    text-align: center;
    padding: 20px;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}

/* Complete Mobile Responsive Styling & Center Alignment */
@media (max-width: 768px) {
    header {
        padding: 10px 16px;
    }

    .nav-container {
        justify-content: center;
        text-align: center;
        flex-direction: column;
        gap: 10px;
    }

    .brand {
        justify-content: center;
        width: 100%;
    }

    .brand-text {
        text-align: center;
    }

    .brand-text h1 {
        font-size: 16px;
    }

    .brand-text p {
        display: none;
    }

    .controls-bar {
        justify-content: center;
        width: 100%;
    }

    main {
        padding: 0 12px;
        margin: 12px auto;
        gap: 12px;
    }

    .toolbar-row {
        flex-direction: column;
        align-items: center;
        text-align: center;
        justify-content: center;
        padding: 10px 14px;
        gap: 8px;
    }

    .options-group {
        justify-content: center;
        width: 100%;
    }

    .editor-container {
        grid-template-columns: 1fr;
        gap: 12px;
        min-height: auto;
    }

    textarea, .output-area {
        min-height: 200px;
        font-size: 22px;
        padding: 12px;
    }

    .keyboard-drawer {
        padding: 12px;
        border-radius: var(--radius-md);
    }

    .kbd-header {
        justify-content: center;
        text-align: center;
    }

    .kbd-target-select {
        justify-content: center;
        width: 100%;
    }

    .kbd-row {
        justify-content: flex-start;
    }

    .vk-key {
        min-width: 36px;
        height: 48px;
    }

    .vk-char {
        font-size: 18px;
    }

    .vk-hint {
        font-size: 8px;
    }

    .dict-section-header {
        justify-content: center;
        text-align: center;
        flex-direction: column;
        gap: 10px;
    }

    .dict-section-title {
        justify-content: center;
    }

    .dict-action-buttons {
        justify-content: center;
    }

    .dict-controls {
        grid-template-columns: 1fr;
    }

    .card-title {
        text-align: center;
    }

    /* Stack fields vertically on mobile for add word card */
    .add-form-grid {
        grid-template-columns: 1fr !important;
        gap: 8px;
    }

    .add-form-grid input, .add-form-grid button {
        width: 100%;
    }

    .words-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    }

    footer {
        text-align: center;
    }
}