/**
 * TadqiqotMaktabi.uz - Unified Academic Design System
 * Modern, readable, and consistent UI across all roles
 * Version: 3.1
 */

@import url('https://fonts.googleapis.com/css2?family=Literata:opsz,wght@7..72,600;7..72,700&family=Manrope:wght@400;500;600;700;800&display=swap');

/* ============================================
   1. CSS VARIABLES & DESIGN TOKENS
   ============================================ */
:root {
    /* Primary Brand Colors */
    --primary-gradient-start: #0f4c81;
    /* Academic blue */
    --primary-gradient-end: #0f766e;
    /* Teal */
    --primary-solid: #0f4c81;

    /* Role-specific accent colors */
    --admin-accent: #113a63;
    --professor-accent: #0f4c81;
    --student-accent: #0f766e;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #0ea5e9;

    /* Neutral Colors - Premium Light Theme */
    --bg-primary: #f3f6fb;
    /* cloud */
    --bg-secondary: #ffffff;
    --bg-dark: #e9eff7;
    --text-primary: #10243e;
    --text-secondary: #2f4863;
    --text-muted: #667b92;

    /* Glass Effect Tokens */
    --glass-bg: rgba(255, 255, 255, 0.78);
    --glass-border: rgba(189, 204, 223, 0.75);
    --glass-shadow: 0 10px 35px rgba(15, 46, 74, 0.08);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-pill: 50px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 22px rgba(15, 118, 110, 0.22);

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --admin-sidebar-width: 256px;
    --admin-content-gap: 14px;
}

/* ============================================
   2. GLOBAL RESETS & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    background-image:
        radial-gradient(circle at 8% 16%, rgba(15, 76, 129, 0.09) 0%, transparent 43%),
        radial-gradient(circle at 88% 86%, rgba(15, 118, 110, 0.11) 0%, transparent 40%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(243, 246, 251, 0.8));
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Override existing background utilities for unified look */
.bg-light,
.bg-white {
    background-color: transparent !important;
    background: var(--glass-bg) !important;
    border: 1px solid var(--glass-border);
}

.text-dark {
    color: var(--text-primary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

/* Adjust Bootstrap components for light theme */
.form-control,
.form-select,
.form-control:read-only {
    background-color: rgba(255, 255, 255, 0.9) !important;
    border: 1px solid rgba(203, 213, 225, 0.8) !important;
    color: var(--text-primary) !important;
}

.form-control:focus,
.form-select:focus {
    background-color: #ffffff !important;
    border-color: var(--primary-solid) !important;
    box-shadow: 0 0 0 0.25rem rgba(15, 76, 129, 0.14) !important;
}

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

.dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
}

.dropdown-item {
    color: var(--text-secondary);
}

.dropdown-item:hover {
    background-color: rgba(15, 76, 129, 0.08);
    color: var(--primary-solid);
}

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
}

.modal-header,
.modal-footer {
    border-color: rgba(0, 0, 0, 0.05);
}

.modal-header .btn-close {
    filter: none;
}

.list-group-item {
    background-color: rgba(255, 255, 255, 0.5);
    border-color: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

/* Full width layout for all pages */
.container-fluid {
    padding-left: 0;
    padding-right: 0;
    max-width: 100%;
}

/* Content wrapper should be full width */
#content {
    width: calc(100% - var(--admin-sidebar-width) - var(--admin-content-gap));
    margin-left: calc(var(--admin-sidebar-width) + var(--admin-content-gap));
    min-height: 100vh;
    padding: 0;
}

#content .container-fluid {
    max-width: 100%;
    padding-left: 2rem;
    padding-right: 2rem;
}

#content .container-fluid.px-0 {
    padding-left: 2rem !important;
    padding-right: 2rem !important;
}

/* Ensure no horizontal scroll */
html {
    overflow-x: hidden;
    width: 100%;
}

/* ============================================
   3. TYPOGRAPHY SYSTEM
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Literata', Georgia, serif;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

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

.text-gradient {
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   4. MODERN CARD SYSTEM & GLASSMORPHISM
   ============================================ */
.card-modern,
.card-glass,
.card {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border) !important;
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    overflow: hidden;
    position: relative;
    color: var(--text-primary);
}

.card-header,
.card-footer {
    background-color: rgba(0, 0, 0, 0.02) !important;
    border-color: rgba(0, 0, 0, 0.05) !important;
}

.card-modern::before,
.card-glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    z-index: 1;
}

.card-modern:hover,
.card-glass:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: rgba(255, 255, 255, 1) !important;
}

.card-gradient {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9), rgba(59, 130, 246, 0.9)) !important;
    backdrop-filter: blur(20px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: var(--radius-xl);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.2);
}

/* ============================================
   5. BUTTON SYSTEM
   ============================================ */
.btn-modern,
.btn-primary {
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.btn-modern:hover,
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.35);
    color: white;
    filter: brightness(1.1);
}

.btn-outline-primary {
    border: 1px solid var(--primary-solid);
    color: var(--primary-solid);
    background: transparent;
    border-radius: var(--radius-lg);
}

.btn-outline-primary:hover {
    background: rgba(99, 102, 241, 0.05);
    color: var(--primary-solid);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.15);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    font-weight: 600;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 1);
    color: var(--primary-solid);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-pill {
    border-radius: var(--radius-pill);
}

/* ============================================
   6. NAVIGATION SYSTEM
   ============================================ */

/* Modern Top Navbar (for Professor & Student) */
.navbar-modern {
    background: linear-gradient(120deg, #113a63 0%, #0f4c81 52%, #0f766e 100%) !important;
    padding: 1rem 0;
    box-shadow: 0 10px 34px rgba(17, 58, 99, 0.28);
    position: sticky;
    top: 0;
    z-index: 1030;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    width: 100%;
}

.top-navbar {
    background: rgba(255, 255, 255, 0.85) !important;
    padding: 1rem 2rem;
    box-shadow: 0 6px 30px rgba(15, 46, 74, 0.08);
    position: sticky;
    top: 0;
    z-index: 1030;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    width: 100%;
}

.navbar-modern::after,
.top-navbar::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 1px;
}

.navbar-modern::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.9), transparent);
    opacity: 0.35;
}

.top-navbar::after {
    background: linear-gradient(90deg, transparent, var(--primary-gradient-start), transparent);
    opacity: 0.2;
}

.navbar-modern .container {
    max-width: 1400px;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.navbar-modern .navbar-brand {
    color: #ffffff !important;
    font-weight: 800;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.02em;
}

.navbar-modern .nav-link,
.top-navbar .nav-link {
    color: var(--text-secondary) !important;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    font-weight: 600;
    margin: 0 0.2rem;
    border: 1px solid transparent;
}

.navbar-modern .nav-link {
    color: rgba(255, 255, 255, 0.88) !important;
}

.navbar-modern .nav-link:hover,
.navbar-modern .nav-link.active {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.28);
}

.top-navbar .nav-link:hover,
.top-navbar .nav-link.active {
    color: var(--primary-solid) !important;
    background: rgba(15, 76, 129, 0.07);
    border-color: rgba(15, 76, 129, 0.14);
    box-shadow: inset 0 0 0 1px rgba(15, 76, 129, 0.05);
}

/* Admin Sidebar */
.sidebar-modern,
#sidebar {
    min-width: var(--admin-sidebar-width);
    max-width: var(--admin-sidebar-width);
    background: linear-gradient(180deg, #113a63 0%, #0f4c81 100%);
    border-right: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    position: fixed;
    height: 100vh;
    transition: all var(--transition-base);
    z-index: 1000;
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.03);
    left: 0;
    top: 0;
}

.sidebar-modern::after {
    content: '';
    position: absolute;
    right: -1px;
    top: 0;
    height: 100%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.85), transparent);
    opacity: 0.4;
}

.sidebar-modern .sidebar-header,
#sidebar .sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-modern .sidebar-header h4,
#sidebar .sidebar-header h4 {
    margin: 0;
    font-weight: 800;
    color: #ffffff;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #ffffff, #d8f3f0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-modern .components,
#sidebar ul {
    padding: 1.5rem 0;
}

.sidebar-modern .nav-item,
#sidebar ul li {
    margin: 0.5rem 1rem;
    list-style: none;
}

.sidebar-modern .nav-link,
#sidebar ul li a {
    padding: 0.875rem 1.25rem;
    color: rgba(255, 255, 255, 0.88);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    border: 1px solid transparent;
    text-decoration: none;
}

.sidebar-modern .nav-link:hover,
.sidebar-modern .nav-link.active,
#sidebar ul li.active>a,
#sidebar ul li a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.24);
    box-shadow: 0 8px 20px rgba(6, 25, 42, 0.25);
    transform: translateX(6px);
}

.sidebar-modern .nav-link i,
#sidebar ul li a i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    color: #d8f3f0;
    transition: all var(--transition-base);
}

.sidebar-modern .nav-link:hover i,
.sidebar-modern .nav-link.active i,
#sidebar ul li.active>a i,
#sidebar ul li a:hover i {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(216, 243, 240, 0.5);
}

/* ============================================
   7. STAT CARDS AND LEGACY CLASSES
   ============================================ */
.stat-card-modern,
.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
}

.stat-card-modern::before,
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-gradient-start), var(--primary-gradient-end));
    box-shadow: 0 0 15px var(--primary-solid);
}

.stat-card-modern:hover,
.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: rgba(99, 102, 241, 0.3);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    background: rgba(15, 76, 129, 0.12);
    color: var(--primary-solid);
    border: 1px solid rgba(15, 76, 129, 0.25);
}

.stat-value,
.stat-card-number {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.stat-label,
.stat-card-title {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Gradient Stat Cards & Legacy Gradient Overrides */
.stat-card-gradient,
.bg-gradient-blue,
.bg-gradient-green,
.bg-gradient-purple,
.bg-gradient-orange {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.9)) !important;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
}

.bg-gradient-blue::before {
    background: linear-gradient(180deg, #3b82f6, #0ea5e9) !important;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3) !important;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.bg-gradient-green::before {
    background: linear-gradient(180deg, #10b981, #059669) !important;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.3) !important;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.bg-gradient-purple::before {
    background: linear-gradient(180deg, #0f4c81, #0f766e) !important;
    box-shadow: 0 0 15px rgba(15, 118, 110, 0.35) !important;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.bg-gradient-orange::before {
    background: linear-gradient(180deg, #f59e0b, #ea580c) !important;
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.3) !important;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

/* ============================================
   8. FORM ELEMENTS
   ============================================ */
.form-modern .form-label,
.form-label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
}

.form-modern .form-control,
.form-modern .form-select {
    border: 1px solid rgba(203, 213, 225, 0.8);
    border-radius: var(--radius-lg);
    padding: 0.875rem 1.25rem;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

/* ============================================
   9. BADGES & TAGS
   ============================================ */
.badge-modern,
.badge {
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(4px);
}

.badge-gradient {
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.2);
}

/* ============================================
   10. NOTIFICATIONS & ALERTS
   ============================================ */
.notification-modern,
.alert {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-solid);
    margin-bottom: 1rem;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.alert-danger {
    border-left-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.alert-success {
    border-left-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.alert-info {
    border-left-color: var(--info);
    background: rgba(6, 182, 212, 0.1);
}

/* ============================================
   11. TABLES
   ============================================ */
.table-modern,
.table {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.table-modern thead,
.table thead {
    background: rgba(248, 250, 252, 0.8);
}

.table-modern thead th,
.table thead th {
    font-weight: 600;
    color: var(--text-secondary);
    border: none;
    padding: 1.25rem 1rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.table-modern tbody tr,
.table tbody tr {
    transition: background var(--transition-fast);
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

.table-modern tbody tr:hover,
.table tbody tr:hover {
    background: rgba(15, 76, 129, 0.05);
}

.table-modern tbody td,
.table tbody td {
    padding: 1.25rem 1rem;
    vertical-align: middle;
    color: var(--text-secondary);
}

/* ============================================
   12. AVATARS
   ============================================ */
.avatar-modern {
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--glass-border);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    padding: 2px;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
}

/* ============================================
   13. LOADING & ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 15px rgba(15, 118, 110, 0.24);
    }

    50% {
        box-shadow: 0 0 25px rgba(15, 118, 110, 0.38);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-in {
    animation: slideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ============================================
   14. UTILITY CLASSES
   ============================================ */
.shadow-modern {
    box-shadow: var(--shadow-md);
}

.shadow-modern-lg {
    box-shadow: var(--shadow-lg);
}

.rounded-modern {
    border-radius: var(--radius-lg);
}

.rounded-modern-lg {
    border-radius: var(--radius-xl);
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
}

.bg-glass {
    background: var(--glass-bg) !important;
    border: 1px solid var(--glass-border) !important;
    backdrop-filter: blur(10px);
}

.text-indigo,
.text-primary-strong {
    color: var(--primary-solid) !important;
}

.bg-indigo {
    background-color: rgba(15, 76, 129, 0.14) !important;
}

.border-indigo {
    border-color: rgba(15, 76, 129, 0.32) !important;
}

.shadow-glow {
    box-shadow: var(--shadow-glow) !important;
}

.text-shadow-glow {
    text-shadow: 0 0 12px rgba(15, 118, 110, 0.3);
}

.transition-fast {
    transition: all var(--transition-fast);
}

.no-caret::after {
    display: none !important;
}

.rounded-bottom-modern {
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
}

.object-fit-cover {
    object-fit: cover;
}

.hover-glow {
    transition: all var(--transition-fast);
}

.hover-glow:hover {
    color: var(--primary-solid) !important;
    text-shadow: 0 0 10px rgba(15, 76, 129, 0.2);
}

.hover-bg-glass:hover {
    background: rgba(255, 255, 255, 0.86) !important;
}

.professor-nav-links .nav-link i {
    margin-right: 0.35rem;
}

.notification-dropdown {
    min-width: 340px;
    max-width: 420px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.notification-list {
    max-height: 360px;
    overflow-y: auto;
}

.notification-item {
    white-space: normal;
    border-bottom: 1px solid rgba(15, 46, 74, 0.08);
}

.notification-item.unread {
    background: rgba(15, 118, 110, 0.08);
}

/* Hover effects */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   15. ADMIN DASHBOARD POLISH
   ============================================ */
.admin-dashboard {
    padding-bottom: 1rem;
}

.admin-dashboard .dashboard-hero {
    padding: 1.4rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.4rem;
    background: linear-gradient(120deg, rgba(255, 255, 255, 0.95) 0%, rgba(233, 244, 254, 0.82) 58%, rgba(229, 246, 240, 0.78) 100%) !important;
}

.admin-dashboard .dashboard-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary-solid);
    background: rgba(15, 76, 129, 0.1);
    border: 1px solid rgba(15, 76, 129, 0.16);
    border-radius: var(--radius-pill);
    padding: 0.22rem 0.7rem;
    margin-bottom: 0.75rem;
}

.admin-dashboard .dashboard-action-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.55rem;
}

.admin-dashboard .dashboard-action-group .btn {
    min-height: 38px;
}

.admin-dashboard .dashboard-stat-card {
    min-height: 180px;
}

.admin-dashboard .widget-head {
    background: linear-gradient(90deg, rgba(15, 76, 129, 0.06), rgba(15, 118, 110, 0.05));
}

.admin-dashboard .chart-wrap {
    height: 320px;
}

.admin-dashboard .chart-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

.admin-dashboard .admin-log-scroll {
    max-height: 320px;
    overflow-y: auto;
    padding-right: 0.35rem;
}

.admin-dashboard .table thead th {
    letter-spacing: 0.04em;
    font-size: 0.73rem;
}

.z-index-1 {
    z-index: 1;
}

/* ============================================
   16. ADMIN USERS ACTION BUTTONS
   ============================================ */
.admin-user-actions .action-icon-btn {
    width: 34px;
    height: 34px;
    padding: 0 !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.admin-user-actions .action-icon-btn i {
    line-height: 1;
    font-size: 0.95rem;
}

/* ============================================
   17. ADMIN USERS PAGE SPACING
   ============================================ */
.admin-users-page {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

#usersResultsCard.is-loading {
    opacity: 0.58;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.admin-users-table thead th:nth-child(1),
.admin-users-table tbody td:nth-child(1) {
    padding-right: 1.5rem;
}

.admin-users-table thead th:nth-child(2),
.admin-users-table tbody td:nth-child(2) {
    padding-left: 1rem;
}

.users-filter-submit-col {
    margin-top: 1.65rem;
}

.users-filter-submit {
    min-height: 44px;
    padding-top: 0.45rem !important;
    padding-bottom: 0.45rem !important;
}

@media (max-width: 991px) {
    .top-navbar {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .admin-users-page {
        padding-left: 0;
        padding-right: 0;
    }

    .users-filter-submit-col {
        margin-top: 0.25rem;
    }
}

/* ============================================
   18. PROFESSOR TASKS FILTER BAR
   ============================================ */
.tasks-filter-card {
    background: rgba(255, 255, 255, 0.88);
}

.tasks-filter-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 0.65rem;
}

.tasks-filter-grid .filter-item {
    min-width: 0;
}

.tasks-filter-grid .filter-item-search {
    flex: 1.05 1 250px;
    transition: flex-basis var(--transition-fast), flex-grow var(--transition-fast);
}

.tasks-filter-grid.search-active .filter-item-search {
    flex: 1.8 1 360px;
}

.tasks-filter-grid .filter-item-status {
    flex: 0.8 1 160px;
}

.tasks-filter-grid .filter-item-student {
    flex: 0.95 1 230px;
}

.tasks-filter-grid .filter-item-page {
    flex: 0 0 90px;
}

.tasks-filter-grid .filter-item-actions {
    flex: 0.9 1 210px;
    display: flex;
    gap: 0.55rem;
}

.tasks-filter-grid .filter-item-actions .btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.tasks-filter-grid.search-active .search-expand-input {
    border-color: rgba(15, 76, 129, 0.45) !important;
    box-shadow: 0 0 0 0.2rem rgba(15, 76, 129, 0.12) !important;
}

/* ============================================
   19. DISCUSSION VIEW POLISH
   ============================================ */
.discussion-page {
    padding-bottom: 1.25rem;
}

.discussion-page .discussion-topbar {
    margin-bottom: 0.6rem !important;
}

.discussion-page .discussion-topic-card {
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.95), rgba(238, 246, 255, 0.88)) !important;
}

.discussion-page .discussion-topic-card:hover,
.discussion-page .discussion-composer-card:hover {
    transform: none;
    box-shadow: var(--glass-shadow);
}

.discussion-page .discussion-avatar-lg {
    width: 52px;
    height: 52px;
}

.discussion-page .discussion-role-badge {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.discussion-page .discussion-topic-title {
    line-height: 1.35;
}

.discussion-page .discussion-topic-content {
    line-height: 1.75;
    white-space: pre-wrap;
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.discussion-page .discussion-attachment-box {
    background: rgba(255, 255, 255, 0.72);
    border-color: rgba(15, 76, 129, 0.14) !important;
}

.discussion-page .discussion-section-title {
    display: flex;
    align-items: center;
}

.discussion-page .discussion-thread-wrap {
    padding: 0.35rem 0;
}

.discussion-page .discussion-thread {
    gap: 0.5rem;
    padding-top: 0.05rem;
}

.discussion-page .discussion-reply-row {
    align-items: flex-end;
    gap: 0.45rem;
}

.discussion-page .discussion-reply-bubble {
    max-width: min(74%, 640px);
    border-radius: 14px;
    border: 1px solid rgba(182, 198, 217, 0.65);
    padding: 0.48rem 0.66rem 0.58rem;
    box-shadow: 0 2px 8px rgba(15, 46, 74, 0.05);
}

.discussion-page .discussion-reply-bubble.reply-professor {
    background: rgba(228, 241, 254, 0.9);
    border-color: rgba(15, 76, 129, 0.24);
}

.discussion-page .discussion-reply-bubble.reply-student {
    background: rgba(255, 255, 255, 0.96);
    border-color: rgba(189, 204, 223, 0.75);
}

.discussion-page .discussion-reply-bubble.reply-self {
    background: rgba(222, 247, 238, 0.94);
    border-color: rgba(15, 118, 110, 0.28);
}

.discussion-page .discussion-reply-row.self .discussion-reply-bubble {
    border-bottom-right-radius: 7px;
}

.discussion-page .discussion-reply-row:not(.self) .discussion-reply-bubble {
    border-bottom-left-radius: 7px;
}

.discussion-page .discussion-reply-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.55rem;
    margin-bottom: 0.22rem;
}

.discussion-page .discussion-reply-author {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    min-width: 0;
}

.discussion-page .discussion-reply-head h6 {
    font-size: 0.84rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0;
}

.discussion-page .discussion-reply-author h6 a {
    display: inline-block;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.discussion-page .discussion-reply-head small {
    font-size: 0.7rem;
    opacity: 0.9;
    white-space: nowrap;
}

.discussion-page .discussion-reply-text {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    font-size: 0.9rem;
    line-height: 1.45;
}

.discussion-page .discussion-empty-state i {
    font-size: 1.4rem;
    color: var(--primary-solid);
    opacity: 0.7;
}

.discussion-page .discussion-reply-files {
    margin-top: 0.42rem;
}

.discussion-page .discussion-avatar-inline {
    width: 30px;
    height: 30px;
    border: 2px solid rgba(255, 255, 255, 0.92);
    box-shadow: 0 2px 8px rgba(15, 46, 74, 0.08);
    flex-shrink: 0;
}

.discussion-page .discussion-composer-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(235, 247, 243, 0.9)) !important;
}

.discussion-page .discussion-input {
    min-height: 124px;
    border-radius: 14px;
    border: 1px solid rgba(160, 176, 197, 0.4) !important;
    background: rgba(255, 255, 255, 0.95) !important;
    resize: vertical;
}

.discussion-page .discussion-attach-btn {
    border: 1px solid rgba(15, 76, 129, 0.16);
}

.discussion-page #fileNameDisplay {
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.discussion-page .discussion-closed-alert {
    background: rgba(248, 250, 252, 0.9);
}

.discussion-page .discussion-file-chip {
    font-size: 0.78rem;
    padding: 0.16rem 0.2rem 0.16rem 0.4rem !important;
    border-radius: 10px !important;
}

.discussion-page .discussion-file-chip-name {
    max-width: 170px;
    margin-right: 0.32rem;
}

/* ============================================
   20. GLOBAL SEARCH MODAL (LIBRARY)
   ============================================ */
.global-search-modal {
    max-width: 1180px;
}

.global-search-shell {
    overflow: hidden;
}

.global-search-header {
    background: linear-gradient(135deg, #102d49 0%, #0f4c81 56%, #0f766e 100%);
    color: #ffffff;
}

.global-search-header .modal-title {
    color: #ffffff !important;
    margin-bottom: 0;
    font-size: 1.22rem;
}

.global-search-body {
    background: linear-gradient(180deg, rgba(245, 249, 255, 0.97), rgba(238, 246, 255, 0.94));
    padding: 1.2rem 1.1rem 1.25rem;
}

.global-search-input-group {
    border-radius: 18px;
    border: 1px solid rgba(15, 76, 129, 0.2) !important;
}

.global-search-input-group .form-control,
.global-search-input-group .form-select,
.global-search-input-group .btn {
    min-height: 54px;
}

.global-search-status {
    border-left: 4px solid rgba(15, 76, 129, 0.42) !important;
}

.global-search-empty {
    padding-top: 4rem !important;
    padding-bottom: 4rem !important;
}

.global-search-result-card {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(184, 201, 221, 0.7);
    border-radius: 14px;
    box-shadow: 0 6px 18px rgba(15, 46, 74, 0.05);
    padding: 0.9rem 1rem;
}

.global-search-result-main {
    flex: 1;
    min-width: 0;
}

.global-search-meta {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin-bottom: 0.4rem;
}

.global-search-title {
    margin-bottom: 0.35rem;
    font-size: 1.12rem;
    line-height: 1.35;
    color: #0f4c81;
}

.global-search-authors {
    margin: 0;
    color: var(--text-secondary);
}

.global-search-abstract {
    margin-top: 0.45rem;
    margin-bottom: 0;
    padding-left: 0.55rem;
    border-left: 3px solid rgba(15, 76, 129, 0.18);
    color: var(--text-muted);
    font-size: 0.88rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.global-search-tags {
    margin-top: 0.32rem;
}

.global-search-actions {
    min-width: 164px;
    max-width: 164px;
}

.global-search-actions .btn {
    min-height: 38px;
}

/* ============================================
   21. PDF READER OVERLAY
   ============================================ */
.pdf-reader-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 10000;
    justify-content: center;
    align-items: center;
    background: rgba(6, 17, 28, 0.76);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    padding: 1rem;
}

.pdf-reader-shell {
    width: min(1320px, 96vw);
    height: min(92vh, 960px);
    border-radius: 14px !important;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 24px 60px rgba(4, 14, 24, 0.46);
    display: flex;
    flex-direction: column;
    background: #ffffff;
}

.pdf-reader-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
    padding: 0.85rem 1rem;
    background: linear-gradient(135deg, #102d49 0%, #0f4c81 58%, #0f766e 100%);
    color: #ffffff;
}

.pdf-reader-title {
    color: #ffffff !important;
    font-size: 1.08rem;
    font-weight: 700;
    max-width: 68%;
}

.pdf-reader-actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.pdf-reader-btn {
    min-height: 38px;
}

.pdf-reader-content {
    flex: 1;
    background: #101924;
}

.pdf-reader-iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    background: #ffffff;
}

.pdf-reader-fallback {
    text-align: center;
    padding: 1.2rem;
}

/* ============================================
   22. RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 1199px) {
    .admin-dashboard .dashboard-hero {
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-dashboard .dashboard-action-group {
        justify-content: flex-start;
    }

    .tasks-filter-grid .filter-item-search {
        flex: 1 1 100%;
    }

    .tasks-filter-grid .filter-item-status,
    .tasks-filter-grid .filter-item-student,
    .tasks-filter-grid .filter-item-actions {
        flex: 1 1 calc(50% - 0.4rem);
    }

    .tasks-filter-grid .filter-item-page {
        flex: 0 0 120px;
    }

    .discussion-page .discussion-reply-bubble {
        max-width: 90%;
    }

    .global-search-result-card {
        flex-direction: column;
        gap: 0.75rem;
    }

    .global-search-actions {
        min-width: 100%;
        max-width: 100%;
        display: flex;
        gap: 0.5rem;
    }

    .global-search-actions .btn {
        margin-bottom: 0 !important;
    }

    .pdf-reader-shell {
        width: min(1240px, 98vw);
        height: min(93vh, 920px);
    }
}

@media (max-width: 767px) {
    .admin-dashboard .dashboard-hero {
        padding: 1.2rem;
    }

    .admin-dashboard .dashboard-action-group {
        width: 100%;
    }

    .admin-dashboard .dashboard-action-group .btn {
        flex: 1 1 100%;
    }

    .admin-dashboard .chart-wrap {
        height: 260px;
    }

    .tasks-filter-grid .filter-item-status,
    .tasks-filter-grid .filter-item-student,
    .tasks-filter-grid .filter-item-page,
    .tasks-filter-grid .filter-item-actions {
        flex: 1 1 100%;
    }

    .tasks-filter-grid .filter-item-actions .btn {
        flex: 1 1 0;
    }

    .discussion-page .discussion-file-chip-name {
        max-width: 135px;
    }

    .discussion-page .discussion-reply-author h6 a {
        max-width: 145px;
    }

    .discussion-page .discussion-reply-bubble {
        max-width: 100%;
    }

    .discussion-page .discussion-input {
        min-height: 110px;
    }

    .discussion-page #submitReplyBtn {
        width: 100%;
    }

    .global-search-modal {
        margin: 0.4rem;
    }

    .global-search-body {
        padding: 0.85rem 0.8rem 0.95rem;
    }

    .global-search-input-group {
        border-radius: 14px;
    }

    .global-search-input-group .form-control,
    .global-search-input-group .form-select,
    .global-search-input-group .btn {
        min-height: 46px;
    }

    .global-search-result-card {
        padding: 0.75rem 0.8rem;
    }

    .global-search-title {
        font-size: 1rem;
    }

    .pdf-reader-overlay {
        padding: 0.55rem;
    }

    .pdf-reader-shell {
        width: 100%;
        height: 94vh;
        border-radius: 10px !important;
    }

    .pdf-reader-header {
        flex-direction: column;
        align-items: stretch;
        padding: 0.7rem 0.7rem 0.8rem;
    }

    .pdf-reader-title {
        max-width: 100%;
        font-size: 0.95rem;
    }

    .pdf-reader-actions {
        width: 100%;
    }

    .pdf-reader-actions .btn {
        flex: 1 1 0;
    }
}

@media (max-width: 991px) {

    .sidebar-modern,
    #sidebar {
        transform: translateX(-100%);
    }

    .sidebar-modern.show,
    #sidebar.show {
        transform: translateX(0);
    }

    #content {
        width: 100%;
        margin-left: 0;
    }
}