/**
 * Babcock University Library Management System
 * Professional Theme - Blue, White, Gold Color Scheme
 */

/* ====================================
   COLOR VARIABLES - Babcock Brand
   ==================================== */
   :root {
    /* Primary Babcock Blue */
    --babcock-blue: #003366;
    --babcock-blue-light: #0047AB;
    --babcock-blue-dark: #001F3F;
    --babcock-blue-hover: #004080;
    
    /* Babcock Gold */
    --babcock-gold: rgb(185,141,59) !important;
    --babcock-gold-light: rgb(185,141,59) !important;
    --babcock-gold-dark: #B8860B;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --success: #10B981;
    --success-light: #D1FAE5;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --danger: #EF4444;
    --danger-light: #FEE2E2;
    --info: #3B82F6;
    --info-light: #DBEAFE;
    
    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 80px;
    --topbar-height: 70px;
    --transition-speed: 0.3s;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ====================================
   GLOBAL STYLES
   ==================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', 'Roboto', -apple-system, sans-serif;
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
}

.footer-logo {
    max-width: 160px;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: transform 0.2s ease;
}

.footer-logo:hover {
    transform: translateY(-3px);
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    text-decoration: none;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-links a:hover {
    color: var(--babcock-gold) !important;
    padding-left: 4px;
}

.footer-contact i {
    color: var(--babcock-gold);
}

.footer-bottom {
    font-size: 0.8rem;
}

/* ====================================
   LAYOUT STRUCTURE
   ==================================== */
.layout-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--babcock-blue) 0%, var(--babcock-blue-dark) 100%);
    color: var(--white);
    transition: all var(--transition-speed) ease;
    z-index: 1050;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: 1.25rem 1.25rem 1rem;
    background: rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--white);
}

.sidebar-logo-img {
    width: 90%;
    height: auto;
    border-radius: 6px;
    /* background: var(--white); */
    padding: 4px;
    box-shadow: var(--shadow-sm);
}

.sidebar-logo-text h1 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
}

.sidebar-logo-text p {
    font-size: 0.7rem;
    opacity: 0.8;
    margin: 0;
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.sidebar-menu::-webkit-scrollbar {
    width: 6px;
}

.sidebar-menu::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.menu-section {
    margin-bottom: 1.5rem;
}

.menu-section-title {
    padding: 0.5rem 1.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.6;
    margin-bottom: 0.5rem;
}

.menu-item {
    display: block;
    padding: 0.75rem 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    margin: 0.125rem 0.5rem;
    border-radius: 8px;
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transform: translateX(2px);
}

.menu-item.active {
    background: var(--babcock-gold);
    color: white;
    font-weight: 600;
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: var(--babcock-blue);
    border-radius: 0 4px 4px 0;
}

.menu-item i {
    width: 20px;
    margin-right: 0.75rem;
    text-align: center;
}

.menu-badge {
    float: right;
    background: var(--babcock-gold);
    color: var(--babcock-blue);
    font-size: 0.7rem;
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-weight: 600;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s;
}

.sidebar-user:hover {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--babcock-gold);
    color: var(--babcock-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

.sidebar-user-info h4 {
    font-size: 0.875rem;
    margin: 0;
    font-weight: 600;
}

.sidebar-user-info p {
    font-size: 0.75rem;
    margin: 0;
    opacity: 0.7;
}

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

/* Top Bar */
.topbar {
    height: var(--topbar-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1040;
    box-shadow: var(--shadow-sm);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.topbar-brand img {
    height: 38px;
    width: auto;
}

.topbar-brand span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--babcock-blue);
}

.topbar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    border-radius: 8px;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.2s;
}

.topbar-toggle:hover {
    background: var(--gray-200);
}

.topbar-title h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--babcock-blue);
    margin: 0;
}

.topbar-breadcrumb {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-user-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 40px;
    padding: 0.4rem 0.85rem;
    font-size: 0.875rem;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.2s ease;
}

.topbar-user-toggle:hover {
    background: var(--gray-200);
    color: var(--babcock-blue);
    border-color: var(--babcock-blue);
}

.topbar-user-toggle:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.12);
}

.topbar-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--babcock-gold);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

.topbar-user-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.1;
}

.topbar-user-name {
    font-weight: 600;
    color: var(--babcock-blue);
}

.topbar-user-role {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: capitalize;
}

.topbar-user-toggle i {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* Page Content */
.page-content {
    padding: 2rem;
}

/* ====================================
   CARDS & COMPONENTS
   ==================================== */
.card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    margin-bottom: 1.5rem;
    transition: all 0.2s;
}

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

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: 12px 12px 0 0;
}

.card-header h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--babcock-blue);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: 0 0 12px 12px;
}

/* Stats Cards */
.stats-card {
    background: linear-gradient(135deg, var(--babcock-blue) 0%, var(--babcock-blue-dark) 100%);
    color: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    border: none;
    position: relative;
    overflow: hidden;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 150px;
    height: 150px;
    background: var(--babcock-gold);
    opacity: 0.1;
    border-radius: 50%;
}

.stats-card-icon {
    width: 50px;
    height: 50px;
    background: var(--babcock-gold);
    color: var(--babcock-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.stats-card-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stats-card-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--babcock-blue);
    color: var(--white);
}

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

.btn-gold {
    background: var(--babcock-gold);
    color: var(--babcock-blue);
}

.btn-gold:hover {
    background: var(--babcock-gold-dark);
}

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--babcock-blue);
    color: var(--babcock-blue);
}

.btn-outline:hover {
    background: var(--babcock-blue);
    color: var(--white);
}

/* Bootstrap Outline Button Variants */
.btn-outline-primary {
    background: transparent;
    border: 2px solid var(--babcock-blue);
    color: var(--babcock-blue);
}

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

.btn-outline-secondary {
    background: transparent;
    border: 2px solid var(--gray-500);
    color: var(--gray-700);
}

.btn-outline-secondary:hover {
    background: var(--gray-500);
    color: var(--white);
    border-color: var(--gray-500);
}

.btn-outline-success {
    background: transparent;
    border: 2px solid var(--success);
    color: var(--success);
}

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

.btn-outline-danger {
    background: transparent;
    border: 2px solid var(--danger);
    color: var(--danger);
}

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

.btn-outline-warning {
    background: transparent;
    border: 2px solid var(--warning);
    color: var(--warning);
}

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

.btn-outline-info {
    background: transparent;
    border: 2px solid var(--info);
    color: var(--info);
}

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

/* Tables */
.table-responsive {
    border-radius: 8px;
    overflow: hidden;
}

.table {
    width: 100%;
    margin-bottom: 0;
}

.table thead {
    background: var(--babcock-blue);
    color: var(--white);
}

.table th {
    padding: 1rem;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--babcock-blue);
    box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.1);
}

/* Badges */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--babcock-blue);
    color: var(--white);
}

.badge-gold {
    background: var(--babcock-gold);
    color: var(--babcock-blue);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
}

/* ====================================
   RESPONSIVE DESIGN
   ==================================== */

/* Tablet */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .topbar-toggle {
        display: flex;
    }
    
}

/* Mobile */
@media (max-width: 768px) {
    .topbar {
        padding: 0 1rem;
    }

    .topbar-title h2 {
        font-size: 1.25rem;
    }

    .topbar-user-meta {
        display: none;
    }

    .topbar-user-toggle {
        padding: 0.35rem 0.6rem;
        border-radius: 50px;
    }

    .topbar-user-toggle i {
        display: none;
    }

    .page-content {
        padding: 1rem;
    }
    
    .stats-card-value {
        font-size: 1.5rem;
    }
}

/* Mobile Small */
@media (max-width: 576px) {
    .topbar-title h2 {
        font-size: 1rem;
    }

    .sidebar-logo-text h1 {
        font-size: 1rem;
    }
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1045;
}

.sidebar-overlay.show {
    display: block;
}

/* Animations */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-slide-in {
    animation: slideInRight 0.3s ease;
}