/* ===================================
   Modern Admin Dashboard Styles
   For: admin/index.html
   ================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-glass: rgba(255, 255, 255, 0.1);
    
    --text-primary: #ffffff;
    --text-secondary: #b8b9ca;
    --text-muted: #8b8d9e;
    
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 200, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

/* Login Form Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.login-card {
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--primary-gradient);
}

.login-card h2 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.form-control {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 1rem 1.25rem;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    color: var(--text-primary);
    outline: none;
    transform: translateY(-1px);
}

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

.form-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 1rem 1.25rem;
}

.form-select:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    color: var(--text-primary);
    outline: none;
    transform: translateY(-1px);
}

.form-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 280px;
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    transition: all 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.logo {
    padding: 2rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.logo i {
    font-size: 2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-right: 0.5rem;
}

.nav {
    padding: 1rem 0;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    transition: all 0.3s ease;
    position: relative;
    font-weight: 500;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--primary-gradient);
    border-radius: 0 3px 3px 0;
    transition: height 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(102, 126, 234, 0.1);
}

.nav-link:hover::before,
.nav-link.active::before {
    height: 2rem;
}

.nav-link i {
    margin-right: 1rem;
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

.main-content.full-width {
    margin-left: 0;
}

/* Top Navbar */
.navbar {
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--text-primary) !important;
}

/* Stats Cards */
.stats-card {
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 2rem;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
}

.stats-card:nth-child(2)::before {
    background: var(--success-gradient);
}

.stats-card:nth-child(3)::before {
    background: var(--warning-gradient);
}

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

.stats-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stats-card:nth-child(2) .stats-number {
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-card:nth-child(3) .stats-number {
    background: var(--warning-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
}

/* Card Styles */
.card {
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    overflow: hidden;
}

.card-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    position: relative;
}

.card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1.5rem;
    right: 1.5rem;
    height: 1px;
    background: var(--primary-gradient);
    opacity: 0.3;
}

.card-header h5 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

/* Button Styles */
.btn {
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

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

.btn-warning {
    background: var(--warning-gradient);
    color: var(--bg-primary);
}

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

.btn-light {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline-primary {
    background: transparent;
    color: #667eea;
    border: 1px solid #667eea;
}

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

.btn-outline-success {
    background: transparent;
    color: #4facfe;
    border: 1px solid #4facfe;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Table Styles */
.table {
    color: var(--text-primary);
    margin: 0;
}

.table th {
    border-top: none;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
}

.table td {
    border-color: var(--border-color);
    padding: 1rem;
    vertical-align: middle;
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.project-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
}

/* Badge Styles */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bg-primary {
    background: var(--primary-gradient) !important;
}

.bg-success {
    background: var(--success-gradient) !important;
}

.bg-warning {
    background: var(--warning-gradient) !important;
    color: var(--bg-primary) !important;
}

/* Modal Styles */
.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
}

.modal-title {
    color: var(--text-primary);
    font-weight: 600;
}

.btn-close {
    filter: invert(1);
}

/* Form Group Styles */
.collaborator-item,
.gallery-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

/* Alert Styles */
.alert {
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.alert-success {
    background: rgba(79, 172, 254, 0.1);
    border-color: #4facfe;
    color: #4facfe;
}

.alert-danger {
    background: rgba(250, 112, 154, 0.1);
    border-color: #fa709a;
    color: #fa709a;
}

.alert-warning {
    background: rgba(67, 233, 123, 0.1);
    border-color: #43e97b;
    color: #43e97b;
}

.alert-info {
    background: rgba(102, 126, 234, 0.1);
    border-color: #667eea;
    color: #667eea;
}

/* Loading Styles */
.loading {
    display: none;
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.loading.show {
    display: block;
}

.loading i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    animation: spin 1s linear infinite;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Section Styles */
.section {
    padding: 2rem;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Alert animations */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-card {
        margin-bottom: 1rem;
    }
    
    .section {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary-gradient));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(var(--secondary-gradient));
}

/* Custom Form Labels */
.form-label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.75rem;
    display: block;
}

/* Utility Classes */
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Mobile Menu Toggle */
#sidebarToggle {
    background: var(--primary-gradient);
    border: none;
    color: white;
    border-radius: var(--radius-md);
    padding: 0.75rem;
    transition: all 0.3s ease;
}

#sidebarToggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Empty State */
.text-center.text-muted i {
    font-size: 3rem;
    opacity: 0.3;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Form validation styles */
.form-control:invalid {
    border-color: rgba(250, 112, 154, 0.5);
}

.form-control:valid {
    border-color: rgba(79, 172, 254, 0.5);
}

/* Button group */
.btn-group {
    display: inline-flex;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.btn-group .btn {
    border-radius: 0;
    margin: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Additional improvements for better UX */
textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Text selection */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}