/* assets/app.css */
:root {
    --bg-main: #f1f5f9;
    --bg-card: #ffffff;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
    overscroll-behavior-y: none;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-card);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

.logo {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    border-bottom: 1px solid var(--border-color);
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), #d946ef);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.nav-menu {
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.nav-item {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 14px 16px;
    border-radius: 10px;
    text-align: left;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-item:hover {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--primary);
}

.nav-item.active {
    background: linear-gradient(90deg, var(--primary), #a855f7);
    color: #fff;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.sidebar-bottom {
    padding: 24px 16px;
    border-top: 1px solid var(--border-color);
}

.setup-btn {
    width: 100%;
    padding: 12px;
    background-color: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-secondary);
    border-radius: 10px;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}
.setup-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: rgba(139, 92, 246, 0.05);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--bg-main);
}

.top-nav {
    height: 90px;
    padding: 0 40px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-card);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.page-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.datetime {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-weight: 500;
    color: var(--text-primary);
}

.content-body {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

/* Table Utilities */
.table-container {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}
.app-table {
    width: 100%;
    border-collapse: collapse;
}
.app-table th {
    padding: 16px;
    text-align: left;
    background: #f8fafc;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
}
.app-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}
.app-table tbody tr:hover {
    background: #f8fafc;
}
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.badge.danger { background: rgba(239,68,68,0.1); color: var(--danger); box-shadow: inset 0 0 0 1px rgba(239,68,68,0.2); }
.badge.warning { background: rgba(245,158,11,0.1); color: var(--warning); box-shadow: inset 0 0 0 1px rgba(245,158,11,0.2); }
.badge.success { background: rgba(16,185,129,0.1); color: var(--success); box-shadow: inset 0 0 0 1px rgba(16,185,129,0.2); }

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: 0.2s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }

/* Responsive Mobile Layout (CSS Media Query) */
@media (max-width: 768px) {
    .app-layout { flex-direction: column; }
    .sidebar { width: 100%; height: auto; border-right: none; border-bottom: 1px solid var(--border-color); padding: 10px; }
    .logo { padding: 16px; justify-content: center; border-bottom: none; }
    .nav-menu { flex-direction: row; overflow-x: auto; padding: 10px; gap: 4px; border-top: 1px solid var(--border-color); white-space: nowrap; -webkit-overflow-scrolling: touch; scrollbar-width: none;}
    .nav-menu::-webkit-scrollbar { display: none; }
    .nav-item { flex: 0 0 auto; padding: 8px 12px; font-size: 0.9rem; }
    .sidebar-bottom { display: none; }
    .top-nav { height: auto; padding: 16px; flex-direction: column; align-items: flex-start; gap: 8px; }
    .content-body { padding: 16px; overflow-y: auto; }
    div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
    .app-table { font-size: 0.85rem; }
    .app-table th, .app-table td { padding: 8px; }
    .datetime { display: none; }
}

/* Loading Spinner */
.spinner-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    gap: 16px;
}
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(139, 92, 246, 0.1);
    border-left-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}