/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #f4f5f7;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #3b82f6;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius: 8px;
    --sidebar-width: 250px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    display: flex;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Sidebar === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-header h2 { color: #fff; font-size: 1.5rem; }
.sidebar-header small { color: var(--sidebar-text); font-size: 0.75rem; }

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 10px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
    min-height: 44px;
}
.nav-item:hover { background: rgba(255,255,255,0.08); text-decoration: none; color: #fff; }
.nav-item.active { background: var(--sidebar-active); color: #fff; }
.nav-icon { font-size: 1rem; width: 20px; text-align: center; }

.nav-divider { height: 1px; background: rgba(255,255,255,0.1); margin: 10px 0; }
.nav-section { padding: 5px 20px; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; color: rgba(255,255,255,0.4); }

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.user-info { margin-bottom: 10px; }
.user-info strong { color: #fff; font-size: 0.85rem; }
.user-info small { color: var(--sidebar-text); }
.sidebar-actions { display: flex; gap: 8px; }

/* === Content === */
.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    max-width: 1200px;
}
.content-full {
    margin-left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
}

/* === Hamburger === */
.hamburger {
    display: none;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 200;
    background: var(--sidebar-bg);
    color: #fff;
    border: none;
    padding: 10px 14px;
    font-size: 1.3rem;
    border-radius: var(--radius);
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
}

/* === Login === */
.login-container { width: 100%; max-width: 380px; padding: 20px; }
.login-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: var(--radius);
    box-shadow: 0 4px 24px rgba(0,0,0,0.1);
    text-align: center;
}
.login-card h1 { font-size: 2rem; color: var(--primary); margin-bottom: 4px; }
.login-subtitle { color: var(--text-muted); margin-bottom: 24px; }

/* === Flash Messages === */
.flash-messages { margin-bottom: 20px; }
.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    font-size: 0.9rem;
}
.flash-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.flash-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* === Page Header === */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}
.page-header h1 { margin-bottom: 4px; }
.page-actions { display: flex; gap: 8px; }
.order-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }

/* === Cards === */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.card h2, .card h3 { margin-bottom: 12px; }
.card-actions { margin-bottom: 12px; }

/* === Stats === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.stat-number { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

.status-bar {
    display: flex;
    border-radius: var(--radius);
    overflow: hidden;
    height: 32px;
    margin-top: 8px;
}
.status-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 20px;
}

/* === Grid layouts === */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

/* === Tables === */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.table th {
    background: var(--bg);
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
}
.table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.table-hover tbody tr:hover { background: #f8fafc; }
.clickable-row { cursor: pointer; }

.actions-cell {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.row-override { background: #fef3c7; }

/* === Badges === */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
}
.badge-lg { padding: 4px 14px; font-size: 0.85rem; }
.badge-success { background: var(--success); }
.badge-danger { background: var(--danger); }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    min-height: 44px;
    min-width: 44px;
}
.btn:hover { background: var(--bg); text-decoration: none; }

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-block { width: 100%; }

.btn-sm { padding: 4px 10px; font-size: 0.8rem; min-height: 34px; min-width: 34px; }
.btn-active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* === Forms === */
.form-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="time"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    background: #fff;
    min-height: 44px;
}
.form-group textarea { min-height: 80px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0 16px;
}

.form-fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
}
.form-fieldset legend {
    padding: 0 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.form-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 4px;
}
.checkbox-grid-wide {
    grid-template-columns: 1fr;
}
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    min-height: 44px;
}
.checkbox-label:hover { background: var(--bg); }

.hidden { display: none; }

/* === Tabs === */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 16px;
    overflow-x: auto;
}
.tab {
    padding: 10px 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    min-height: 44px;
    display: flex;
    align-items: center;
}
.tab:hover { color: var(--text); text-decoration: none; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* === Detail === */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}
.detail-label { display: block; font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.detail-value { font-size: 1rem; font-weight: 500; }
.detail-description { padding-top: 16px; border-top: 1px solid var(--border); }

/* === Status actions === */
.status-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}
.inline-form { display: inline-flex; }

.override-section { margin-top: 12px; }
.override-section summary {
    cursor: pointer;
    color: var(--danger);
    font-weight: 500;
    padding: 8px 0;
}
.override-form {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
    padding: 12px;
    background: #fef3c7;
    border-radius: var(--radius);
    margin-top: 8px;
}

/* === Filter bar === */
.filter-bar {
    margin-bottom: 16px;
}
.filter-form {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}
.filter-form select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    min-height: 44px;
}
.search-input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    min-width: 200px;
    min-height: 44px;
}

/* === Tasks === */
.task-list, .task-list-page { display: flex; flex-direction: column; gap: 4px; }
.task-item, .task-item-full {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.task-item-full {
    background: var(--card-bg);
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.task-done { opacity: 0.5; }
.task-toggle { flex-shrink: 0; }
.task-check {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px;
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.task-content { flex: 1; }
.task-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 4px; font-size: 0.8rem; color: var(--text-muted); }
.task-actions { display: flex; gap: 4px; }

/* === Comments === */
.comment-form { margin-bottom: 20px; }
.comment-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    margin-bottom: 8px;
}
.comment-list { display: flex; flex-direction: column; gap: 12px; }
.comment-item {
    padding: 12px;
    background: var(--bg);
    border-radius: var(--radius);
}
.comment-header { display: flex; justify-content: space-between; margin-bottom: 4px; font-size: 0.85rem; }
.comment-date { color: var(--text-muted); }

/* === Upload === */
.upload-form {
    padding: 12px;
    background: var(--bg);
    border-radius: var(--radius);
    margin-bottom: 16px;
}
.upload-form select {
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-height: 44px;
}

/* === Empty state === */
.empty-state { color: var(--text-muted); padding: 16px 0; font-size: 0.9rem; }
.empty-state-large {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

/* === Utilities === */
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }

/* === Responsive === */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .hamburger { display: block; }
    .content { margin-left: 0; padding: 60px 16px 16px; }
    .grid-2 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-grid { grid-template-columns: 1fr; }
    .detail-grid { grid-template-columns: 1fr 1fr; }
    .filter-form { flex-direction: column; align-items: stretch; }
    .search-input { min-width: auto; }
    .tabs { gap: 0; }
    .tab { padding: 10px 12px; font-size: 0.8rem; }
    .override-form { flex-direction: column; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
}