/* ============================================================
   MetaAppMaster - Design System
   نظام التصميم الرئيسي للمنصة
   ============================================================ */

/* ============================================================
   CSS Variables (Design Tokens)
   ============================================================ */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0f1e;
    --bg-secondary: #111827;
    --bg-card: #1a2235;
    --bg-card-hover: #1f2a42;
    --bg-input: #0f172a;
    --bg-glass: rgba(17, 24, 39, 0.8);

    /* Accent Colors */
    --accent-blue: #3b82f6;
    --accent-blue-light: #60a5fa;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-pink: #ec4899;
    --accent-cyan: #06b6d4;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #ec4899 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-bg: linear-gradient(180deg, #0a0f1e 0%, #111827 100%);

    /* Platform Colors */
    --color-facebook: #1877f2;
    --color-instagram: #e4405f;
    --color-whatsapp: #25d366;

    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #60a5fa;

    /* Borders */
    --border-color: rgba(148, 163, 184, 0.1);
    --border-active: rgba(59, 130, 246, 0.5);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Spacing */
    --sidebar-width: 260px;
    --header-height: 64px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    direction: rtl;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--text-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-blue-light);
}

/* ============================================================
   Layout: Sidebar + Main
   ============================================================ */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base);
}

.sidebar-brand {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-brand .logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: white;
}

.sidebar-brand h1 {
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.nav-link:hover {
    background: rgba(59, 130, 246, 0.08);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-blue);
    font-weight: 600;
}

.nav-link .icon {
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
}

.nav-link .badge {
    margin-right: auto;
    background: var(--accent-red);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* Sidebar User */
.sidebar-user {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-user img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.sidebar-user .user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user .user-name {
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-role {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-right: var(--sidebar-width);
    min-height: 100vh;
}

/* Header */
.main-header {
    height: var(--header-height);
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.main-body {
    padding: 32px;
}

/* ============================================================
   Cards
   ============================================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--border-active);
    box-shadow: var(--shadow-glow);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

/* ============================================================
   Stats Grid
   ============================================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: all var(--transition-base);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.stat-icon.blue { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.stat-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.stat-icon.purple { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.stat-icon.orange { background: rgba(245, 158, 11, 0.15); color: var(--accent-orange); }

.stat-info h3 {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-change {
    font-size: 0.75rem;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-change.positive { color: var(--accent-green); }
.stat-change.negative { color: var(--accent-red); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    line-height: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
}

.btn-danger {
    background: var(--gradient-danger);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

/* ============================================================
   Forms
   ============================================================ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    direction: rtl;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 14px center;
    padding-left: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* ============================================================
   Tables
   ============================================================ */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    padding: 12px 16px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    text-align: right;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.table td {
    padding: 14px 16px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: rgba(59, 130, 246, 0.04);
}

/* ============================================================
   Platform Badges
   ============================================================ */
.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.platform-badge.facebook {
    background: rgba(24, 119, 242, 0.12);
    color: var(--color-facebook);
}

.platform-badge.instagram {
    background: rgba(228, 64, 95, 0.12);
    color: var(--color-instagram);
}

.platform-badge.whatsapp {
    background: rgba(37, 211, 102, 0.12);
    color: var(--color-whatsapp);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.73rem;
    font-weight: 600;
}

.status-badge.sent { background: rgba(59, 130, 246, 0.12); color: var(--accent-blue); }
.status-badge.delivered { background: rgba(16, 185, 129, 0.12); color: var(--accent-green); }
.status-badge.read { background: rgba(139, 92, 246, 0.12); color: var(--accent-purple); }
.status-badge.failed { background: rgba(239, 68, 68, 0.12); color: var(--accent-red); }
.status-badge.pending { background: rgba(245, 158, 11, 0.12); color: var(--accent-orange); }

/* ============================================================
   Inbox / Chat
   ============================================================ */
.inbox-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    height: calc(100vh - var(--header-height));
    overflow: hidden;
}

.conversation-list {
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
}

.conversation-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.conversation-item:hover,
.conversation-item.active {
    background: rgba(59, 130, 246, 0.06);
}

.conversation-item .avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    color: white;
    flex-shrink: 0;
}

.conversation-item .conv-info {
    flex: 1;
    min-width: 0;
}

.conversation-item .conv-name {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-item .conv-preview {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-item .conv-meta {
    text-align: left;
    flex-shrink: 0;
}

.conversation-item .conv-time {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.conversation-item .conv-unread {
    background: var(--accent-blue);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 4px;
    margin-right: auto;
}

/* Chat Area */
.chat-area {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-glass);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message-bubble {
    max-width: 65%;
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    line-height: 1.5;
    position: relative;
    animation: fadeInUp 0.3s ease;
}

.message-bubble.inbound {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-bottom-right-radius: 4px;
}

.message-bubble.outbound {
    background: var(--gradient-primary);
    color: white;
    align-self: flex-end;
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.message-bubble.outbound .message-time {
    color: rgba(255, 255, 255, 0.65);
}

.chat-input {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    gap: 12px;
    align-items: center;
}

.chat-input .form-control {
    flex: 1;
}

/* ============================================================
   Flash Messages / Alerts
   ============================================================ */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

/* ============================================================
   Login Page
   ============================================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    top: -200px;
    left: -200px;
    pointer-events: none;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    bottom: -150px;
    right: -150px;
    pointer-events: none;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px;
    width: 100%;
    max-width: 440px;
    text-align: center;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-lg);
}

.login-card .logo-large {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    margin: 0 auto 24px;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.login-card h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.btn-facebook {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    padding: 14px 28px;
    background: var(--color-facebook);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    text-decoration: none;
}

.btn-facebook:hover {
    background: #1565d8;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(24, 119, 242, 0.4);
    color: white;
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-right: 0;
    }
    .inbox-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-body {
        padding: 16px;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
}