:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --danger: #ef4444;
    --success: #22c55e;
    --warning: #f59e0b;
    
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    --bg: #0f172a;
    --surface: #1e293b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    
    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Theme toggle button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s;
    line-height: 1;
    padding: 0;
    flex-shrink: 0;
}
.theme-toggle:hover {
    background: var(--bg);
    color: var(--text);
    border-color: var(--primary);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background-color: var(--glass-bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.navbar-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.hidden {
    display: none !important;
}

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1.5rem; }
.w-100 { width: 100%; }

/* Typography */
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); font-size: 0.875rem; }
.text-center { text-align: center; }

/* Cards & Glassmorphism */
.card {
    background-color: var(--surface);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.header-with-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
@media (min-width: 768px) {
    .form-row {
        flex-direction: row;
        align-items: flex-end;
    }
    .form-row > .form-group {
        flex: 1;
        margin-top: 0;
    }
    .form-row > .form-group:last-child {
        flex: 0 0 auto;
    }
}

.input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    background-color: var(--bg);
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.input-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    width: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    font-family: inherit;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--bg);
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
}

.btn-danger {
    background-color: transparent;
    color: var(--danger);
}
.btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

.btn-success {
    background-color: transparent;
    color: var(--success);
}
.btn-success:hover {
    background-color: rgba(34, 197, 94, 0.1);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th, .table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success { background-color: rgba(34, 197, 94, 0.1); color: var(--success); }
.badge-danger { background-color: rgba(239, 68, 68, 0.1); color: var(--danger); }
.badge-warning { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }
.badge-info { background-color: rgba(59, 130, 246, 0.1); color: var(--primary); }

/* Toasts */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    background-color: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    z-index: 100;
    transition: opacity 0.3s, transform 0.3s;
    transform: translateY(0);
}

.toast.hidden {
    opacity: 0;
    transform: translateY(1rem);
    pointer-events: none;
}

/* Auth dividers */
.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-muted);
    margin: 1.5rem 0;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border);
}

.divider:not(:empty)::before { margin-right: .5em; }
.divider:not(:empty)::after { margin-left: .5em; }

.telegram-login-container {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background-color: var(--surface);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text);
    margin-top: 0.25rem;
}

.photo-item {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.photo-item img {
    max-width: 100%;
    border-radius: 0.25rem;
}