/* نظام التصميم المادي Material Design 3 */
:root {
    /* الألوان الأساسية */
    --md-primary: #6750a4;
    --md-on-primary: #ffffff;
    --md-primary-container: #eaddff;
    --md-on-primary-container: #21005d;
    
    /* الألوان الثانوية */
    --md-secondary: #625b71;
    --md-on-secondary: #ffffff;
    --md-secondary-container: #e8def8;
    --md-on-secondary-container: #1d192b;
    
    /* ألوان السطح */
    --md-surface: #fef7ff;
    --md-surface-dim: #ded8e1;
    --md-surface-bright: #fef7ff;
    --md-on-surface: #1d1b20;
    --md-surface-variant: #e7e0ec;
    --md-on-surface-variant: #49454f;
    
    /* ألوان الخطأ */
    --md-error: #ba1a1a;
    --md-on-error: #ffffff;
    --md-error-container: #ffdad6;
    --md-on-error-container: #410002;
    
    /* ألوان النجاح */
    --md-success: #0d904f;
    --md-on-success: #ffffff;
    --md-success-container: #95f7bc;
    --md-on-success-container: #002112;
    
    /* ألوان التحذير */
    --md-warning: #7c5800;
    --md-on-warning: #ffffff;
    --md-warning-container: #ffdea3;
    --md-on-warning-container: #271900;
    
    /* ألوان المعلومات */
    --md-info: #006874;
    --md-on-info: #ffffff;
    --md-info-container: #97f0ff;
    --md-on-info-container: #001f24;
    
    /* المسافات */
    --md-space-xs: 4px;
    --md-space-sm: 8px;
    --md-space-md: 16px;
    --md-space-lg: 24px;
    --md-space-xl: 32px;
    --md-space-2xl: 48px;
    
    /* أنصاف الأقطار */
    --md-radius-xs: 4px;
    --md-radius-sm: 8px;
    --md-radius-md: 12px;
    --md-radius-lg: 16px;
    --md-radius-xl: 20px;
    --md-radius-2xl: 28px;
    --md-radius-full: 9999px;
    
    /* الارتفاعات */
    --md-elevation-0: none;
    --md-elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.30);
    --md-elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.30);
    --md-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.15), 0px 1px 3px 0px rgba(0, 0, 0, 0.30);
    --md-elevation-4: 0px 6px 10px 4px rgba(0, 0, 0, 0.15), 0px 2px 3px 0px rgba(0, 0, 0, 0.30);
    --md-elevation-5: 0px 8px 12px 6px rgba(0, 0, 0, 0.15), 0px 4px 4px 0px rgba(0, 0, 0, 0.30);
    
    /* الخطوط */
    --md-font-family: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --md-font-headline-large: 2rem;
    --md-font-headline-medium: 1.75rem;
    --md-font-headline-small: 1.5rem;
    --md-font-title-large: 1.375rem;
    --md-font-title-medium: 1rem;
    --md-font-title-small: 0.875rem;
    --md-font-body-large: 1rem;
    --md-font-body-medium: 0.875rem;
    --md-font-body-small: 0.75rem;
    --md-font-label-large: 0.875rem;
    --md-font-label-medium: 0.75rem;
    --md-font-label-small: 0.6875rem;
    
    /* الحركات */
    --md-transition-fast: 100ms cubic-bezier(0.4, 0, 0.2, 1);
    --md-transition-medium: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --md-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --md-transition-spring: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* الوضع الداكن */
[data-theme="dark"] {
    --md-surface: #1d1b20;
    --md-surface-dim: #141218;
    --md-surface-bright: #36343b;
    --md-on-surface: #e6e1e5;
    --md-surface-variant: #49454f;
    --md-on-surface-variant: #cac4d0;
    --md-primary: #d0bcff;
    --md-primary-container: #4f378b;
    --md-on-primary: #371e73;
    --md-secondary-container: #4a4458;
    --md-on-secondary-container: #e8def8;
}

/* أنماط الأساس */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--md-font-family);
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* شاشة البداية */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-primary-container) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeOut 0.5s ease-in-out 2s forwards;
}

.splash-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--md-space-lg);
    animation: bounceIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.splash-icon {
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--md-radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.splash-icon img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.splash-text {
    text-align: center;
    color: var(--md-on-primary);
}

.splash-text h1 {
    font-size: var(--md-font-headline-large);
    font-weight: 700;
    margin-bottom: var(--md-space-xs);
    background: linear-gradient(to right, #ffffff, #eaddff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.splash-text p {
    font-size: var(--md-font-body-medium);
    opacity: 0.8;
}

/* الحاوية الرئيسية */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 100%;
    margin: 0 auto;
    position: relative;
}

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

/* شريط الحالة */
.status-bar {
    height: env(safe-area-inset-top);
    background-color: var(--md-primary);
}

/* شريط التطبيق */
.app-bar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background-color: var(--md-primary);
    color: var(--md-on-primary);
    z-index: 1000;
    box-shadow: var(--md-elevation-2);
    backdrop-filter: blur(10px);
    background: rgba(103, 80, 164, 0.95);
}

.app-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--md-space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.app-title {
    font-size: var(--md-font-title-large);
    font-weight: 600;
    margin: 0 auto;
    text-align: center;
    flex: 1;
}

/* أزرار الأيقونات */
.icon-button {
    width: 40px;
    height: 40px;
    border-radius: var(--md-radius-full);
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--md-transition-medium);
    position: relative;
    overflow: hidden;
}

.icon-button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: currentColor;
    border-radius: var(--md-radius-full);
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: var(--md-transition-fast);
}

.icon-button:hover::after,
.icon-button:focus::after {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.1;
}

.icon-button:active::after {
    opacity: 0.2;
}

/* المحتوى الرئيسي */
.main-content {
    flex: 1;
    padding: var(--md-space-md);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: calc(80px + var(--md-space-md));
}

/* التنقل السفلي */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background-color: var(--md-surface);
    border-top: 1px solid var(--md-surface-variant);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom);
    backdrop-filter: blur(10px);
    background: rgba(254, 247, 255, 0.9);
}

[data-theme="dark"] .bottom-nav {
    background: rgba(29, 27, 32, 0.9);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--md-on-surface-variant);
    padding: var(--md-space-sm);
    border-radius: var(--md-radius-md);
    transition: var(--md-transition-medium);
    min-width: 64px;
    position: relative;
    flex: 1;
}

.bottom-nav-item.active {
    color: var(--md-primary);
}

.bottom-nav-item.active .bottom-nav-icon {
    background-color: var(--md-primary-container);
    color: var(--md-primary);
    transform: translateY(-4px);
}

.bottom-nav-icon {
    width: 56px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--md-radius-full);
    transition: var(--md-transition-spring);
    margin-bottom: 4px;
}

.bottom-nav-label {
    font-size: var(--md-font-label-small);
    font-weight: 500;
    transition: var(--md-transition-medium);
}

/* الزر العائم */
.fab {
    position: fixed;
    bottom: calc(80px + var(--md-space-lg));
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 56px;
    border-radius: var(--md-radius-full);
    background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-secondary) 100%);
    color: var(--md-on-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--md-elevation-4);
    z-index: 999;
    transition: var(--md-transition-spring);
    animation: pulse 2s infinite;
}

.fab:hover {
    transform: translateX(-50%) scale(1.1);
    box-shadow: var(--md-elevation-5);
}

.fab:active {
    transform: translateX(-50%) scale(0.95);
}

/* الشريط الجانبي */
.side-nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 320px;
    height: 100%;
    background-color: var(--md-surface);
    box-shadow: var(--md-elevation-4);
    z-index: 1100;
    transition: var(--md-transition-spring);
    padding-top: env(safe-area-inset-top);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.side-nav.open {
    right: 0;
}

.side-nav-header {
    padding: var(--md-space-lg);
    border-bottom: 1px solid var(--md-surface-variant);
    position: relative;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--md-space-md);
    margin-bottom: var(--md-space-lg);
}

.avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--md-radius-full);
    background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--md-on-primary);
    font-size: 24px;
}

.user-info h3 {
    font-size: var(--md-font-title-medium);
    font-weight: 600;
    margin-bottom: 2px;
}

.user-info p {
    font-size: var(--md-font-body-small);
    color: var(--md-on-surface-variant);
}

.close-nav {
    position: absolute;
    top: var(--md-space-lg);
    left: var(--md-space-lg);
}

.nav-items {
    flex: 1;
    padding: var(--md-space-md) 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--md-space-md) var(--md-space-lg);
    text-decoration: none;
    color: var(--md-on-surface);
    transition: var(--md-transition-medium);
    position: relative;
}

.nav-item:hover {
    background-color: var(--md-surface-variant);
}

.nav-item.active {
    background-color: var(--md-primary-container);
    color: var(--md-primary);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background-color: var(--md-primary);
    border-radius: 0 4px 4px 0;
}

.nav-icon {
    margin-left: var(--md-space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.nav-text {
    font-size: var(--md-font-body-medium);
    font-weight: 500;
}

.nav-divider {
    height: 1px;
    background-color: var(--md-surface-variant);
    margin: var(--md-space-md) var(--md-space-lg);
}

.nav-footer {
    padding: var(--md-space-md) var(--md-space-lg);
    border-top: 1px solid var(--md-surface-variant);
}

.app-version {
    font-size: var(--md-font-label-small);
    color: var(--md-on-surface-variant);
    text-align: center;
}

/* التغطية */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: var(--md-transition-medium);
    backdrop-filter: blur(2px);
}

.overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* البطاقات */
.card {
    background-color: var(--md-surface);
    border-radius: var(--md-radius-lg);
    padding: var(--md-space-lg);
    margin-bottom: var(--md-space-md);
    box-shadow: var(--md-elevation-1);
    transition: var(--md-transition-medium);
    border: 1px solid var(--md-surface-variant);
}

.card:hover {
    box-shadow: var(--md-elevation-2);
}

.card-title {
    font-size: var(--md-font-title-medium);
    font-weight: 600;
    margin-bottom: var(--md-space-md);
    color: var(--md-on-surface);
    display: flex;
    align-items: center;
    gap: var(--md-space-sm);
}

/* الأزرار */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--md-radius-xl);
    border: none;
    font-size: var(--md-font-body-medium);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--md-transition-medium);
    min-height: 40px;
    position: relative;
    overflow: hidden;
    gap: 8px;
}

.button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: currentColor;
    border-radius: inherit;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: var(--md-transition-fast);
}

.button:hover::after,
.button:focus::after {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.1;
}

.button:active::after {
    opacity: 0.2;
}

.button.primary {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
}

.button.secondary {
    background-color: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
}

.button.outlined {
    background-color: transparent;
    color: var(--md-primary);
    border: 1px solid var(--md-outline);
}

.button.tonal {
    background-color: var(--md-primary-container);
    color: var(--md-primary);
}

.button.full-width {
    width: 100%;
}

.button-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

/* المدخلات */
.file-input {
    display: none;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--md-space-2xl);
    border: 2px dashed var(--md-outline);
    border-radius: var(--md-radius-lg);
    cursor: pointer;
    transition: var(--md-transition-medium);
    text-align: center;
    min-height: 200px;
    background-color: var(--md-surface-variant);
    position: relative;
    overflow: hidden;
}

.file-label:hover {
    border-color: var(--md-primary);
    background-color: var(--md-primary-container);
}

.file-label .material-symbols-rounded {
    font-size: 48px;
    color: var(--md-primary);
    margin-bottom: var(--md-space-md);
}

/* المنزلقات */
.slider-container {
    padding: var(--md-space-lg) 0;
}

.slider {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--md-surface-variant);
    border-radius: 2px;
    outline: none;
    position: relative;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--md-primary);
    cursor: pointer;
    border: 2px solid var(--md-surface);
    box-shadow: var(--md-elevation-1);
    transition: var(--md-transition-medium);
}

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

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--md-primary);
    cursor: pointer;
    border: 2px solid var(--md-surface);
    box-shadow: var(--md-elevation-1);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--md-space-sm);
    font-size: var(--md-font-body-small);
    color: var(--md-on-surface-variant);
}

/* التبديلات */
.switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 32px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--md-surface-variant);
    transition: var(--md-transition-medium);
    border-radius: var(--md-radius-full);
}

.switch-slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 4px;
    bottom: 4px;
    background-color: var(--md-on-primary);
    transition: var(--md-transition-medium);
    border-radius: 50%;
    box-shadow: var(--md-elevation-1);
}

input:checked + .switch-slider {
    background-color: var(--md-primary);
}

input:checked + .switch-slider:before {
    transform: translateX(20px);
}

/* شاشة التحميل */
.loading-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.loading-modal .modal-content {
    background-color: var(--md-surface);
    border-radius: var(--md-radius-xl);
    padding: var(--md-space-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--md-space-lg);
    animation: scaleIn 0.3s ease-out;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--md-surface-variant);
    border-top: 3px solid var(--md-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    font-size: var(--md-font-body-medium);
    color: var(--md-on-surface);
    font-weight: 500;
}

/* التنبيهات */
.toast {
    position: fixed;
    bottom: calc(80px + var(--md-space-lg));
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    padding: var(--md-space-md) var(--md-space-lg);
    border-radius: var(--md-radius-xl);
    box-shadow: var(--md-elevation-4);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--md-transition-medium);
    max-width: 90%;
    text-align: center;
    display: flex;
    align-items: center;
    gap: var(--md-space-sm);
    backdrop-filter: blur(10px);
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background-color: var(--md-success-container);
    color: var(--md-on-success-container);
}

.toast.error {
    background-color: var(--md-error-container);
    color: var(--md-on-error-container);
}

.toast.warning {
    background-color: var(--md-warning-container);
    color: var(--md-on-warning-container);
}

/* المشاهدات */
.view-container {
    animation: fadeIn 0.3s ease-out;
}

/* معاينة الصور */
.image-preview {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: var(--md-radius-md);
    margin: var(--md-space-md) 0;
    background-color: var(--md-surface-variant);
    box-shadow: var(--md-elevation-1);
    transition: var(--md-transition-medium);
    cursor: pointer;
}

.image-preview:hover {
    transform: scale(1.02);
    box-shadow: var(--md-elevation-2);
}

.preview-container {
    display: flex;
    flex-direction: column;
    gap: var(--md-space-md);
}

.preview-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-space-md);
    font-size: var(--md-font-body-small);
    color: var(--md-on-surface-variant);
}

/* نتائج الضغط */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--md-space-md);
    margin-top: var(--md-space-md);
}

.result-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--md-space-md);
    background-color: var(--md-surface-variant);
    border-radius: var(--md-radius-md);
    transition: var(--md-transition-medium);
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--md-elevation-2);
}

.result-image {
    width: 100%;
    height: 120px;
    object-fit: contain;
    background-color: var(--md-surface);
    border-radius: var(--md-radius-sm);
    margin-bottom: var(--md-space-sm);
}

.result-info {
    text-align: center;
    font-size: var(--md-font-body-small);
    color: var(--md-on-surface-variant);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.result-size {
    font-weight: 600;
    color: var(--md-primary);
    font-size: var(--md-font-body-medium);
}

.result-savings {
    color: var(--md-success);
    font-weight: 500;
}

/* معرض الصور */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 2100;
    display: flex;
    flex-direction: column;
}

.image-viewer .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--md-space-md);
    background-color: rgba(0, 0, 0, 0.8);
}

.image-viewer .modal-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--md-space-md);
}

.viewer-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    animation: zoomIn 0.3s ease-out;
}

.image-viewer .modal-footer {
    padding: var(--md-space-md);
    background-color: rgba(0, 0, 0, 0.8);
    text-align: center;
}

.image-info {
    display: flex;
    justify-content: center;
    gap: var(--md-space-lg);
    color: white;
    font-size: var(--md-font-body-small);
    opacity: 0.8;
}

/* الحوارات */
.confirm-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2200;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.dialog-content {
    background-color: var(--md-surface);
    border-radius: var(--md-radius-xl);
    padding: var(--md-space-lg);
    max-width: 400px;
    width: 90%;
    animation: slideUp 0.3s ease-out;
}

.dialog-content h3 {
    font-size: var(--md-font-title-medium);
    font-weight: 600;
    margin-bottom: var(--md-space-md);
}

.dialog-content p {
    font-size: var(--md-font-body-medium);
    color: var(--md-on-surface-variant);
    margin-bottom: var(--md-space-lg);
}

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--md-space-md);
}

/* المربعات المنبثقة */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--md-transition-medium);
}

.modal.hidden {
    display: none;
}

.modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.modal-content {
    background-color: var(--md-surface);
    border-radius: var(--md-radius-xl);
    max-width: 90%;
    max-height: 90%;
    overflow: auto;
    position: relative;
    z-index: 1;
    animation: scaleIn 0.3s ease-out;
}

/* الإعلانات */
.ad-container {
    padding: var(--md-space-md);
    background-color: var(--md-surface-variant);
    border-radius: var(--md-radius-md);
    margin: var(--md-space-md) auto;
    max-width: 728px;
    text-align: center;
    overflow: hidden;
}

/* الحركات */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        visibility: hidden;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(103, 80, 164, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(103, 80, 164, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(103, 80, 164, 0);
    }
}

/* تأثيرات الهاتف */
@media (hover: none) and (pointer: coarse) {
    .button:active::after,
    .icon-button:active::after {
        opacity: 0.2;
    }
    
    .result-card:active {
        transform: scale(0.98);
    }
    
    .image-preview:active {
        transform: scale(0.98);
    }
}

/* الاستجابة */
@media (min-width: 768px) {
    .bottom-nav {
        display: none;
    }
    
    .fab {
        bottom: var(--md-space-lg);
        left: auto;
        right: var(--md-space-lg);
        transform: none;
    }
    
    .fab:hover {
        transform: scale(1.1);
    }
    
    .fab:active {
        transform: scale(0.95);
    }
    
    .app-bar-content {
        padding: 0 var(--md-space-lg);
    }
    
    .main-content {
        padding: var(--md-space-lg);
        padding-bottom: var(--md-space-lg);
    }
}

@media (max-width: 767px) {
    .side-nav {
        width: 280px;
        right: -280px;
    }
    
    .app-bar {
        height: 56px;
    }
    
    .app-title {
        font-size: var(--md-font-title-medium);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--md-space-sm);
        padding-bottom: calc(80px + var(--md-space-sm));
    }
    
    .card {
        padding: var(--md-space-md);
    }
    
    .dialog-actions {
        flex-direction: column;
    }
}

/* تحسينات الأداء */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* طباعة */
@media print {
    .app-bar,
    .bottom-nav,
    .fab,
    .ad-container,
    .modal,
    .toast {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
}