/* ==========================================================================
   CENTER MANAGER - CLOSED DESIGN SYSTEM
   ==========================================================================
   v2.4 Refactored & Optimized (Accessibility & High-Fidelity)
   
   STRICT SYSTEM INSTRUCTIONS:
   --------------------------------------------------------------------------
   1. THIS IS A CLOSED DESIGN SYSTEM. DO NOT ADD CUSTOM CLASSES.
   2. USE UTILITY COMPOSITION (e.g., class="card p-4 flex gap-2") INSTEAD OF
      CREATING NEW CLASSES.
   3. AVOID PAGE-SPECIFIC CSS. IF YOU NEED A STYLE, CREATE A GENERIC UTILITY.
   4. MAINTAIN THE VISUAL IDENTITY (COLORS, TYPOGRAPHY) AS DEFINED IN :ROOT.
   ========================================================================== */

/* ============================================
   1. VARIABLES & TOKENS
   ============================================ */
@import url("https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700&display=swap");

:root {
    /* Colors */
    --primary: #1e3a5f;
    --primary-light: #2c5282;
    --secondary: #64748b;
    --secondary-dark: #475569;
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    
    /* Semantic Colors */
    --success: #22c55e;
    --success-text: #15803d;
    --warning: #f59e0b;
    --warning-text: #b45309;
    --danger: #ef4444;
    --danger-text: #b91c1c;
    --info: #3b82f6;
    --info-text: #1d4ed8;
    
    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* Typography */
    --font-family: 'Cairo', system-ui, -apple-system, sans-serif;
    --font-mono: 'SF Mono', 'Roboto Mono', Menlo, monospace;
    
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    
    --letter-spacing-wide: 0.05em;
    --letter-spacing-wider: 0.1em;
    
    /* Spacing */
    --spacing-xs: 0.25rem;  /* 4px */
    --spacing-sm: 0.5rem;   /* 8px */
    --spacing-md: 1rem;     /* 16px */
    --spacing-lg: 1.5rem;   /* 24px */
    --spacing-xl: 2rem;     /* 32px */
    --spacing-2xl: 3rem;    /* 48px */
    
    /* Borders & Radius */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    --card-radius: var(--radius-lg);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.10);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.15), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px -3px rgba(0, 0, 0, 0.15), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 30px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    --shadow-premium: 0 15px 35px -5px rgba(30, 58, 95, 0.25);
    
    /* Card Specifics */
    --card-shadow: var(--shadow-sm);
    --card-shadow-hover: var(--shadow-md);
    --card-padding: var(--spacing-lg);
    
    /* Inputs & Buttons */
    --btn-padding-y: 0.5rem;
    --btn-padding-x: 1rem;
    --btn-font-size: var(--font-size-sm);
    --btn-radius: var(--radius-md);
    
    --input-padding-y: 0.5rem;
    --input-padding-x: 0.75rem;
    --input-font-size: var(--font-size-sm);
    --input-radius: var(--radius-md);
    
    /* Effects */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-blur: 12px;
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-premium: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-toast: 1060;
    
    /* Legacy / Compatibility Variables */
    --primary-color: var(--primary);
    --secondary-color: var(--secondary);
    --success-color: var(--success);
    --danger-color: var(--danger);
    --light-color: var(--bg-primary);
    --dark-color: var(--text-primary);
}

/* ============================================
   2. RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background: linear-gradient(135deg, #f8fafc 0%, #f9f9f9 100%);
    direction: rtl;
    text-align: right;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* Custom Scrollbar (Native App Feel) */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover {
    background-color: var(--secondary);
}

/* Focus Visibility for Accessibility */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

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

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

/* ============================================
   3. LAYOUT & GRID
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    width: 100%;
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg);
}

/* Flex Grid System (12 Column) */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(-0.5 * var(--spacing-md));
    margin-left: calc(-0.5 * var(--spacing-md));
}

.col, [class*="col-"] {
    padding-right: calc(0.5 * var(--spacing-md));
    padding-left: calc(0.5 * var(--spacing-md));
}

.col { flex: 1 0 0%; }
.col-auto { flex: 0 0 auto; width: auto; }
.col-12 { flex: 0 0 auto; width: 100%; }
.col-6 { flex: 0 0 auto; width: 50%; }
.col-4 { flex: 0 0 auto; width: 33.3333%; }
.col-3 { flex: 0 0 auto; width: 25%; }
.col-2 { flex: 0 0 auto; width: 16.6667%; }

@media (min-width: 768px) {
    .col-md-6 { flex: 0 0 auto; width: 50%; }
    .col-md-4 { flex: 0 0 auto; width: 33.3333%; }
    .col-md-3 { flex: 0 0 auto; width: 25%; }
}

@media (min-width: 1024px) {
    .col-lg-3 { flex: 0 0 auto; width: 25%; }
    .col-lg-4 { flex: 0 0 auto; width: 33.3333%; }
}

/* CSS Grid Utilities */
.grid { display: grid; gap: var(--spacing-md); }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Responsive Grid (Auto-Reflow) */
.grid-responsive {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.grid-responsive-sm {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

@media (max-width: 768px) {
    .grid-cols-2, .grid-cols-3, .grid-cols-4 { grid-template-columns: 1fr; }
}

/* ============================================
   4. UTILITIES (The Core of the Closed System)
   ============================================ */
/* Display & Position */
.hidden { display: none !important; }
.block { display: block !important; }
.inline-block { display: inline-block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.relative { position: relative !important; }
.absolute { position: absolute !important; }
.fixed { position: fixed !important; }

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Flexbox */
.flex-col { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.items-center { align-items: center !important; }
.items-start { align-items: flex-start !important; }
.items-end { align-items: flex-end !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-start { justify-content: flex-start !important; }
.justify-end { justify-content: flex-end !important; }
.flex-1 { flex: 1 1 0% !important; }
.gap-xs { gap: var(--spacing-xs) !important; }
.gap-sm { gap: var(--spacing-sm) !important; }
.gap-md { gap: var(--spacing-md) !important; }
.gap-lg { gap: var(--spacing-lg) !important; }

/* Sizing */
.w-full { width: 100% !important; }
.w-auto { width: auto !important; }
.h-full { height: 100% !important; }
.max-w-xs { max-width: 20rem !important; }
.max-w-sm { max-width: 24rem !important; }
.max-w-md { max-width: 28rem !important; }
.max-w-lg { max-width: 32rem !important; }
.max-w-xl { max-width: 36rem !important; }

/* Spacing (Margin & Padding) */
.m-0 { margin: 0 !important; }
.mt-sm { margin-top: var(--spacing-sm) !important; }
.mt-md { margin-top: var(--spacing-md) !important; }
.mt-lg { margin-top: var(--spacing-lg) !important; }
.mt-xl { margin-top: var(--spacing-xl) !important; }
.mb-sm { margin-bottom: var(--spacing-sm) !important; }
.mb-md { margin-bottom: var(--spacing-md) !important; }
.mb-lg { margin-bottom: var(--spacing-lg) !important; }
.mb-xl { margin-bottom: var(--spacing-xl) !important; }

.p-0 { padding: 0 !important; }
.p-sm { padding: var(--spacing-sm) !important; }
.p-md { padding: var(--spacing-md) !important; }
.p-lg { padding: var(--spacing-lg) !important; }
.p-xl { padding: var(--spacing-xl) !important; }

/* Typography */
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-left { text-align: left !important; }
.text-sm { font-size: var(--font-size-sm) !important; }
.text-xs { font-size: var(--font-size-xs) !important; }
.text-lg { font-size: var(--font-size-lg) !important; }
.text-xl { font-size: var(--font-size-xl) !important; }
.text-2xl { font-size: var(--font-size-2xl) !important; }

.font-normal { font-weight: var(--font-weight-normal) !important; }
.font-medium { font-weight: var(--font-weight-medium) !important; }
.font-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-bold { font-weight: var(--font-weight-bold) !important; }
.font-mono { font-family: var(--font-mono) !important; }

.text-primary { color: var(--primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }

.uppercase { text-transform: uppercase !important; }
.tracking-wide { letter-spacing: var(--letter-spacing-wide) !important; }
.tracking-widest { letter-spacing: var(--letter-spacing-wider) !important; }

/* Backgrounds & Effects */
.bg-transparent { background-color: transparent !important; }
.bg-white { background-color: #fff !important; }
.bg-card { background-color: var(--bg-card) !important; }
.bg-secondary { background-color: var(--bg-secondary) !important; }
.bg-glass {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}
.shadow-none { box-shadow: none !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Responsive Utilities */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
    .w-full-mobile { width: 100% !important; }
}
@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}

/* ============================================
   5. COMPONENTS (Consolidated)
   ============================================ */

/* ---------------- Cards ---------------- */
/* Main Card Component */
.card {
    background: var(--bg-card);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    padding: var(--card-padding);
    margin-bottom: var(--spacing-md);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

/* Card Header */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
    background: transparent;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.card-body { padding: 0; }

/* ---------------- Buttons ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    font-size: var(--btn-font-size);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border: 1px solid transparent;
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
}

.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* Variants */
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-light); color: white; }

.btn-secondary { background: var(--secondary); color: white; }
.btn-secondary:hover { background: var(--secondary-dark); }

.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: white; }

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

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }

.btn-dark { background: var(--text-primary); color: white; }
.btn-dark:hover { background: black; }

/* Sizes */
.btn-sm { padding: 0.25rem 0.75rem; font-size: var(--font-size-xs); }
.btn-lg { padding: 0.75rem 1.5rem; font-size: var(--font-size-base); }
.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--radius-md); }

/* ---------------- Forms ---------------- */
.form-group { margin-bottom: var(--spacing-md); }
.form-label { display: block; margin-bottom: var(--spacing-sm); font-weight: var(--font-weight-medium); }

.form-control {
    width: 100%;
    padding: var(--input-padding-y) var(--input-padding-x);
    font-family: inherit;
    font-size: var(--input-font-size);
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--input-radius);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

/* Form Validation */
.form-control.is-invalid {
    border-color: var(--danger);
    box-shadow: none; /* Reset default shadow if any */
}
.form-control.is-invalid:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15); /* Danger Glow */
}
.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: var(--font-size-xs);
    color: var(--danger);
}
.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

.form-control.is-valid {
    border-color: var(--success);
}
.form-control.is-valid:focus {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15);
}

.form-check { display: flex; align-items: center; gap: var(--spacing-sm); cursor: pointer; }
.form-check-input { width: 1.1em; height: 1.1em; accent-color: var(--primary); }

/* ---------------- Avatars ---------------- */
.avatar {
    width: 2.5rem; height: 2.5rem;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-weight: bold;
    overflow: hidden;
    flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-sm { width: 2rem; height: 2rem; font-size: 0.75rem; }
.avatar-lg { width: 4rem; height: 4rem; font-size: 1.5rem; }
.avatar-xl { width: 6rem; height: 6rem; font-size: 2rem; }

/* ---------------- Badges ---------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25em 0.75em;
    font-size: 0.75em;
    font-weight: 600;
    border-radius: var(--radius-full);
    line-height: 1;
}
.badge-primary { background: rgba(30, 58, 95, 0.1); color: var(--primary); }
.badge-success { background: rgba(34, 197, 94, 0.1); color: var(--success-text); }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning-text); }
.badge-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger-text); }

/* ---------------- Alerts ---------------- */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
}
.alert-success { background: rgba(34, 197, 94, 0.1); border-color: var(--success); color: var(--success-text); }
.alert-danger { background: rgba(239, 68, 68, 0.1); border-color: var(--danger); color: var(--danger-text); }
.alert-warning { background: rgba(245, 158, 11, 0.1); border-color: var(--warning); color: var(--warning-text); }

/* ---------------- Skeleton Loading ---------------- */
.skeleton {
    background-color: #e2e8f0;
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
    width: 100%;
}
.skeleton::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    background-image: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0,
        rgba(255, 255, 255, 0.2) 20%,
        rgba(255, 255, 255, 0.5) 60%,
        rgba(255, 255, 255, 0)
    );
    animation: shimmer 2s infinite;
    content: '';
}

@keyframes shimmer {
    100% { transform: translateX(100%); }
}

/* ---------------- Navigation ---------------- */
.main-nav {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    padding: 0 var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    border-bottom: 1px solid var(--border);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    position: relative;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link.active::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: var(--primary);
}

/* Animations */
@keyframes slide-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-up { animation: slide-up 0.5s ease forwards; }

@keyframes pulse-soft {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(30, 58, 95, 0.4); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(30, 58, 95, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(30, 58, 95, 0); }
}

/* Print Styles */
@media print {
    .hide-print, .btn, .main-nav { display: none !important; }
    body { background: white; color: black; }
    .card, .table {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none; 
        border: 1px solid #ddd;
    }
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
}