/* Nagy-Board v2.3 — أنماط عامة */
@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@100;200;300;400;500;600;700;800;900&display=swap');

:root {
    /* ألوان الوضع المظلم (افتراضي) */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --accent-primary: #22c55e;
    --accent-secondary: #3b82f6;
    --accent-tertiary: #8b5cf6;
    --border-color: #475569;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* الوضع الفاتح */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #cbd5e1;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Vazirmatn', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* تخصيصات RTL */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .flex-row {
    flex-direction: row-reverse;
}

[dir="rtl"] .space-x-2 > * + * {
    margin-right: 0.5rem;
    margin-left: 0;
}

[dir="rtl"] .space-x-4 > * + * {
    margin-right: 1rem;
    margin-left: 0;
}

[dir="rtl"] .border-l {
    border-right-width: 1px;
    border-left-width: 0;
}

[dir="rtl"] .border-r {
    border-left-width: 1px;
    border-right-width: 0;
}

[dir="rtl"] .rounded-l-lg {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

[dir="rtl"] .rounded-r-lg {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

/* أنماط اللوحة اللانهائية */
.excalidraw-container {
    width: 100%;
    height: 100%;
}

.excalidraw {
    --bg-color: var(--bg-primary) !important;
    --selection-color: var(--accent-primary) !important;
    --icon-fill-color: var(--text-secondary) !important;
    --button-gray-1: var(--bg-secondary) !important;
    --button-gray-2: var(--bg-tertiary) !important;
}

/* أزرار مخصصة */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
    font-family: inherit;
    font-size: 0.875rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #16a34a);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border-radius: var(--radius-md);
}

/* بطاقات */
.card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.card-body {
    padding: 1rem;
}

/* حقول الإدخال */
.input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgb(34 197 94 / 0.1);
}

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

/* شريط التمرير */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* رسوم متحركة */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 5px var(--accent-primary);
    }
    50% {
        box-shadow: 0 0 20px var(--accent-primary), 0 0 40px var(--accent-secondary);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes spin-slow {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-spin-slow {
    animation: spin-slow 8s linear infinite;
}

/* تأثيرات جسيمات الكم */
.quantum-dot {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent-primary);
    opacity: 0.6;
    pointer-events: none;
}

.quantum-trail {
    position: absolute;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
    opacity: 0.4;
    pointer-events: none;
}

/* معاينة المعادلات الرياضية */
.math-preview {
    font-size: 1.125rem;
    color: var(--text-primary);
    min-height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 1rem;
}

/* شبكة الكم */
.quantum-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.03;
    background-image: 
        radial-gradient(circle at 25% 25%, var(--accent-primary) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, var(--accent-secondary) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
}

/* أدوات الرسم */
.drawing-tool {
    position: relative;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.drawing-tool:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.drawing-tool.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: var(--shadow-md);
}

.drawing-tool .tool-tooltip {
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    margin-right: 0.5rem;
    border: 1px solid var(--border-color);
}

.drawing-tool:hover .tool-tooltip {
    opacity: 1;
    visibility: visible;
}

/* قوائم منسدلة */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    min-width: 12rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 50;
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

/* نافذة منبثقة */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgb(0 0 0 / 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 100;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 90vw;
    max-height: 90vh;
    overflow: auto;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-content {
    transform: scale(1);
}

/* ألوان مخصصة للفيزياء */
.physics-force {
    color: #ef4444;
}

.physics-velocity {
    color: #3b82f6;
}

.physics-acceleration {
    color: #22c55e;
}

.physics-energy {
    color: #a855f7;
}

.physics-wave {
    color: #f59e0b;
}

/* شريط الزمن */
.timeline-container {
    position: relative;
    height: 60px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.timeline-playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-primary);
    pointer-events: none;
}

.timeline-keyframe {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent-secondary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.timeline-keyframe:hover {
    transform: translateY(-50%) scale(1.3);
}

/* لوحة المعادلات */
.equation-suggestion {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.equation-suggestion:hover {
    background: var(--bg-tertiary);
}

.equation-preview {
    font-family: 'Times New Roman', serif;
    font-style: italic;
}

/* مؤشرات الكم */
.quantum-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 9999px;
}

/* أزرار التبديل */
.toggle-switch {
    position: relative;
    width: 3rem;
    height: 1.75rem;
    background: var(--bg-tertiary);
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toggle-switch.active {
    background: var(--accent-primary);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    width: 1.25rem;
    height: 1.25rem;
    background: white;
    border-radius: 50%;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.toggle-switch.active::after {
    transform: translateX(-1.25rem);
}

/* شريط التمرير المخصص */
.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    outline: none;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* اختيار الألوان */
.color-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.color-option {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.color-option:hover {
    transform: scale(1.15);
}

.color-option.active {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--bg-secondary), 0 0 0 4px var(--accent-primary);
}

/* تأثيرات التحميل */
.loading-skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--border-color) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* توجيهات للمستخدم */
.onboarding-tooltip {
    position: absolute;
    background: var(--bg-secondary);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    padding: 1rem;
    max-width: 300px;
    z-index: 1000;
}

.onboarding-tooltip::before {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--accent-primary);
    border-right: 1px solid var(--accent-primary);
}

.onboarding-tooltip.position-bottom::before {
    top: -7px;
    right: 2rem;
    transform: rotate(-45deg);
}

/* استجابة الشاشات الصغيرة */
@media (max-width: 768px) {
    .drawing-tool .tool-tooltip {
        display: none;
    }
    
    .modal-content {
        max-width: 95vw;
        margin: 1rem;
    }
    
    [dir="rtl"] .mobile-hidden {
        display: none;
    }
}

/* طباعة */
@media print {
    .no-print {
        display: none !important;
    }
    
    #canvas-container {
        position: fixed;
        inset: 0;
    }
}