/* Common Library Management System Styles */

:root {
    --primary-gradient: linear-gradient(135deg, #2C3E50 0%, #1ABC9C 100%);
    --secondary-gradient: linear-gradient(135deg, #F39C12 0%, #E67E22 100%);
    --success-gradient: linear-gradient(135deg, #27AE60 0%, #2ECC71 100%);
    --info-gradient: linear-gradient(135deg, #3498DB 0%, #5DADE2 100%);
    --danger-gradient: linear-gradient(135deg, #E74C3C 0%, #EC7063 100%);
    --warning-gradient: linear-gradient(135deg, #F39C12 0%, #F7DC6F 100%);
    --bg-gradient: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    --sidebar-bg: linear-gradient(180deg, #34495e 0%, #2c3e50 100%);
    --card-shadow: 0 10px 30px rgba(0,0,0,0.1);
    --card-hover-shadow: 0 15px 40px rgba(0,0,0,0.15);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    transition: var(--transition);
}

body {
    font-family: 'Inter', sans-serif;
    font-size: .875rem;
    background: var(--bg-gradient);
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 500;
}

/* Header Styles */
.navbar {
    background: var(--primary-gradient) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 48px 0 0;
    background: var(--sidebar-bg);
    border-right: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
}

@media (max-width: 767.98px) {
    .sidebar { top: 5rem; }
}

.sidebar-sticky {
    height: calc(100vh - 48px);
    overflow-x: hidden;
    overflow-y: auto;
    padding: 1rem 0;
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 0.75rem 1.5rem;
    margin: 0.25rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    display: flex;
    align-items: center;
}

.sidebar .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
    transform: translateX(5px);
}

.sidebar .nav-link.active {
    background: linear-gradient(135deg, #1ABC9C 0%, #16A085 100%);
    color: #fff !important;
    box-shadow: 0 4px 15px rgba(26, 188, 156, 0.3);
}

.sidebar .nav-link i {
    margin-right: 0.5rem;
    width: 20px;
    text-align: center;
}

/* Main Content Styles */
.main-content {
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    margin: 1rem;
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

/* Page Header Styles */
.page-header {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: var(--card-shadow);
}

.page-header.header-with-btn {
    padding: 1.5rem 2rem;
    margin: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    margin: 0;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

/* Button Styles */
.btn-modern {
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(44, 62, 80, 0.3);
    transition: var(--transition);
}

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(44, 62, 80, 0.4);
    color: white;
    text-decoration: none;
}

/* Statistics Card Styles */
.stat-card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    z-index: -1;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.stat-card.primary {
    background: var(--primary-gradient);
}

.stat-card.warning {
    background: var(--warning-gradient);
}

.stat-card.success {
    background: var(--success-gradient);
}

.stat-card.info {
    background: var(--info-gradient);
}

.stat-card .card-body {
    position: relative;
    z-index: 2;
    padding: 1.5rem;
}

.stat-card .card-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.stat-card .card-text {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.stat-card .stat-icon {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2.5rem;
    opacity: 0.3;
}

/* Table Styles */
.table-container {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255,255,255,0.2);
    overflow: hidden;
    margin: 1rem;
    margin-bottom: 2rem;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

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

.table tbody tr:hover {
    background-color: rgba(26, 188, 156, 0.1);
    transform: scale(1.01);
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-color: rgba(0,0,0,0.05);
}

/* Action Button Styles */
.action-btn {
    border: none;
    border-radius: 8px;
    padding: 0.5rem;
    margin: 0 0.25rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.action-btn.edit {
    background: var(--warning-gradient);
    color: white;
    box-shadow: 0 4px 10px rgba(243, 156, 18, 0.3);
}

.action-btn.delete {
    background: var(--danger-gradient);
    color: white;
    box-shadow: 0 4px 10px rgba(231, 76, 60, 0.3);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.2);
}

/* Badge Styles */
.badge-modern {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.8rem;
}

.badge-fiction {
    background: var(--info-gradient);
    color: white;
}

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

/* Search Container Styles */
.search-container {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 1rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: var(--card-shadow);
}

.search-input {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 0.875rem 1rem;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.search-input:focus {
    border-color: #1ABC9C;
    box-shadow: 0 0 0 0.25rem rgba(26, 188, 156, 0.25);
    background: white;
    outline: none;
}

/* Section Title Styles */
.section-title {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid;
    border-image: var(--primary-gradient) 1;
    display: inline-block;
}

/* Form Styles */
.form-floating {
    margin-bottom: 1.5rem;
}

.form-floating .form-control {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 1rem 0.75rem;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.form-floating .form-control:focus {
    border-color: #1ABC9C;
    box-shadow: 0 0 0 0.25rem rgba(26, 188, 156, 0.25);
    background: white;
}

.form-floating label {
    color: #6c757d;
    font-weight: 500;
}

/* Form Container Styles */
.form-container {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 1rem;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255,255,255,0.2);
}

/* Row spacing for forms */
.form-container .row {
    margin-bottom: 1rem;
}

.form-container .row:last-child {
    margin-bottom: 0;
}

/* General form spacing */
.row .form-floating {
    margin-bottom: 1.5rem;
}

/* Button spacing */
.btn-modern, .btn-login {
    margin-top: 1rem;
}

/* Additional form group spacing */
.mb-3 {
    margin-bottom: 1.5rem !important;
}

.mb-4 {
    margin-bottom: 2rem !important;
}

/* Card and content spacing */
.card.mb-3, .stat-card.mb-3 {
    margin-bottom: 1.5rem !important;
}

/* Info card spacing */
.info-card {
    margin-bottom: 2rem;
}

/* Form actions styling */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.form-actions.text-center {
    justify-content: center;
}

/* Form Select Fixes */
.form-floating > .form-select {
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.form-floating > .form-select:focus ~ label,
.form-floating > .form-select:not([value=""]):valid ~ label {
    opacity: 0.65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

.form-floating > .form-select[value=""] ~ label,
.form-floating > .form-select:invalid ~ label {
    opacity: 0.65;
    transform: scale(1) translateY(0) translateX(0);
    top: 50%;
    transform: translateY(-50%);
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header.header-with-btn {
        flex-direction: column;
        text-align: center;
    }

    .table-responsive {
        font-size: 0.8rem;
    }
}