:root {
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --danger: #ef4444;
    --success: #22c55e;
    --sidebar-width: 260px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.login-container {
    background-color: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--text-light);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    width: 100%;
}

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

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

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

.btn-secondary:hover {
    border-color: var(--text-light);
    color: var(--text-light);
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.hint {
    margin-top: 0.5rem;
    color: var(--secondary-color);
    font-style: italic;
}

/* App Layout */
.app-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-card);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-nav {
    flex: 1;
    padding: 1.5rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-light);
}

.nav-item.active {
    border-left-color: var(--primary-color);
}

.nav-item .icon {
    margin-right: 0.75rem;
    font-size: 1.2rem;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.user-info {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.user-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 0.75rem;
    background-color: var(--primary-color);
}

.user-details {
    display: flex;
    flex-direction: column;
}

.username {
    font-weight: 600;
    font-size: 0.9rem;
}

.role {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.logout-btn {
    display: block;
    text-align: center;
    color: var(--danger);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.5rem;
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 4px;
    transition: all 0.2s;
}

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

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    background-color: #0f172a;
}

.top-bar {
    padding: 1.5rem 2rem;
    background-color: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.breadcrumbs {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.content-wrapper {
    padding: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

/* Cards */
.profile-card, .admin-panel-card, .info-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    margin-bottom: 2rem;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-header h2 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.card-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.card-header.danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-bottom-color: rgba(239, 68, 68, 0.2);
}

.card-header.danger h2 {
    color: var(--danger);
}

.card-body {
    padding: 1.5rem;
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.form-actions .btn {
    width: auto;
}

.info-card {
    padding: 1.5rem;
}

.info-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.info-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Admin Panel */
.flag-container {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.flag-box {
    background-color: #000;
    padding: 1rem;
    border-radius: 6px;
    margin: 1rem 0;
    border: 1px solid var(--success);
    color: var(--success);
    font-family: monospace;
    font-size: 1.2rem;
    word-break: break-all;
}

.user-list table {
    width: 100%;
    border-collapse: collapse;
}

.user-list th, .user-list td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.user-list th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.badge-user {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--primary-color);
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 4px;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.8rem;
}

.btn-sm:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-success {
    background-color: rgba(34, 197, 94, 0.2);
    color: #86efac;
    border: 1px solid rgba(34, 197, 94, 0.3);
}