/* Hospital Shift Management System — core stylesheet */

:root {
    --color-bg: #f1f5f9;
    --color-surface: #ffffff;
    --color-surface-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-success: #16a34a;
    --color-success-light: #dcfce7;
    --color-warning: #d97706;
    --color-warning-light: #fef3c7;
    --color-danger: #dc2626;
    --color-danger-light: #fee2e2;
    --color-info: #0891b2;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --radius: 10px;
    --sidebar-width: 250px;
}

[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-alt: #172033;
    --color-border: #334155;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-dark: #60a5fa;
    --color-primary-light: #1e3a5f;
    --color-success-light: #113023;
    --color-warning-light: #3a2a0d;
    --color-danger-light: #3a1414;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--color-border);
    font-weight: 700;
    font-size: 16px;
}
.sidebar-brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--color-primary); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 10px 0; }
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--color-text-muted);
    font-weight: 500;
    border-left: 3px solid transparent;
}
.sidebar-nav a:hover { background: var(--color-surface-alt); text-decoration: none; color: var(--color-text); }
.sidebar-nav a.active { color: var(--color-primary); border-left-color: var(--color-primary); background: var(--color-primary-light); }
.sidebar-nav .nav-section { padding: 14px 20px 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--color-text-muted); }
.sidebar-footer { padding: 14px 20px; border-top: 1px solid var(--color-border); font-size: 12px; color: var(--color-text-muted); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 20;
}
.topbar h1 { font-size: 18px; margin: 0; }
.topbar-actions { display: flex; align-items: center; gap: 14px; }
.icon-btn {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    width: 34px;
    height: 34px;
    cursor: pointer;
    color: var(--color-text-muted);
    display: flex; align-items: center; justify-content: center;
    font-size: 15px;
    position: relative;
}
.icon-btn:hover { background: var(--color-surface-alt); }
.badge-dot {
    position: absolute; top: -4px; right: -4px;
    background: var(--color-danger); color: #fff;
    font-size: 10px; min-width: 16px; height: 16px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center; padding: 0 3px;
}

.content { padding: 24px; flex: 1; }

.menu-toggle { display: none; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.card-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
    display: flex; align-items: center; justify-content: space-between;
    gap: 10px; flex-wrap: wrap;
}
.card-header h2, .card-header h3 { margin: 0; font-size: 15px; }
.card-body { padding: 18px; }

.grid { display: grid; gap: 16px; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .grid-cols-4 { grid-template-columns: repeat(2, 1fr); } .grid-cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; } }

.stat-card { padding: 16px 18px; }
.stat-card .stat-label { font-size: 12px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .04em; }
.stat-card .stat-value { font-size: 26px; font-weight: 700; margin-top: 4px; }
.stat-card .stat-icon { font-size: 20px; opacity: .8; }
.stat-card .stat-row { display: flex; align-items: flex-start; justify-content: space-between; }

.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
}
.btn:hover { background: var(--color-surface-alt); text-decoration: none; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-success { background: var(--color-success); border-color: var(--color-success); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; font-size: 12.5px; color: var(--color-text-muted); }
.form-control {
    width: 100%; padding: 8px 10px;
    border: 1px solid var(--color-border); border-radius: 7px;
    background: var(--color-surface); color: var(--color-text);
    font-size: 13.5px;
}
.form-control:focus { outline: none; border-color: var(--color-primary); }
textarea.form-control { resize: vertical; min-height: 70px; }
.form-row { display: flex; gap: 14px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 180px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.help-text { font-size: 11.5px; color: var(--color-text-muted); margin-top: 3px; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data-table th { text-align: left; padding: 10px 12px; color: var(--color-text-muted); font-size: 11.5px; text-transform: uppercase; letter-spacing: .03em; border-bottom: 1px solid var(--color-border); }
table.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
table.data-table tbody tr:hover { background: var(--color-surface-alt); }
.table-responsive { overflow-x: auto; }

.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 9px; border-radius: 20px; font-size: 11px; font-weight: 700; }
.badge-blue { background: var(--color-primary-light); color: var(--color-primary-dark); }
.badge-green { background: var(--color-success-light); color: var(--color-success); }
.badge-yellow { background: var(--color-warning-light); color: var(--color-warning); }
.badge-red { background: var(--color-danger-light); color: var(--color-danger); }
.badge-gray { background: var(--color-surface-alt); color: var(--color-text-muted); border: 1px solid var(--color-border); }

.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--color-primary-light); color: var(--color-primary-dark); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 12px; flex-shrink: 0; overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.person-cell { display: flex; align-items: center; gap: 10px; }

.flash-stack { position: fixed; top: 16px; right: 16px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast { min-width: 240px; max-width: 340px; padding: 12px 14px; border-radius: 8px; box-shadow: var(--shadow-md); font-size: 13px; color: #fff; animation: slideIn .2s ease; }
.toast-success { background: var(--color-success); }
.toast-danger { background: var(--color-danger); }
.toast-info { background: var(--color-info); }
.toast-warning { background: var(--color-warning); }
@keyframes slideIn { from { transform: translateX(30px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.modal-backdrop { position: fixed; inset: 0; background: rgba(15,23,42,.5); display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal-backdrop.open { display: flex; }
.modal { background: var(--color-surface); border-radius: var(--radius); width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-md); }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--color-border); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { margin: 0; font-size: 16px; }
.modal-close { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--color-text-muted); }
.modal-body { padding: 18px 20px; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--color-border); display: flex; justify-content: flex-end; gap: 10px; }

.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1d4ed8, #0891b2); padding: 20px; }
.login-card { background: var(--color-surface); border-radius: 14px; width: 100%; max-width: 380px; box-shadow: var(--shadow-md); padding: 32px 28px; }
.login-card .brand { text-align: center; margin-bottom: 22px; }
.login-card .brand .dot { width: 14px; height: 14px; border-radius: 50%; background: var(--color-primary); display: inline-block; margin-bottom: 8px; }
.login-card h1 { font-size: 18px; margin: 4px 0 2px; }
.login-card p { color: var(--color-text-muted); font-size: 12.5px; margin: 0; }
.login-hints { margin-top: 16px; font-size: 11.5px; color: var(--color-text-muted); background: var(--color-surface-alt); border-radius: 8px; padding: 10px 12px; }

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-weekday { font-size: 11px; text-transform: uppercase; color: var(--color-text-muted); text-align: center; padding: 4px 0; font-weight: 700; }
.cal-day { border: 1px solid var(--color-border); border-radius: 8px; min-height: 100px; padding: 6px; background: var(--color-surface); display: flex; flex-direction: column; gap: 4px; }
.cal-day.other-month { opacity: .35; }
.cal-day.today { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary); }
.cal-day .cal-day-num { font-size: 11.5px; font-weight: 700; color: var(--color-text-muted); }
.cal-shift-chip { font-size: 10.5px; padding: 3px 6px; border-radius: 5px; cursor: pointer; color: #1e293b; font-weight: 600; line-height: 1.3; }
.cal-shift-chip.flagged { outline: 2px solid var(--color-danger); }
.cal-shift-chip small { display: block; font-weight: 400; opacity: .85; }

.progress-bar { width: 100%; height: 8px; border-radius: 5px; background: var(--color-surface-alt); overflow: hidden; }
.progress-bar > div { height: 100%; background: var(--color-primary); }

.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { background: var(--color-surface-alt); border: 1px solid var(--color-border); border-radius: 6px; padding: 2px 8px; font-size: 11.5px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--color-text-muted); }
.empty-state .icon { font-size: 32px; margin-bottom: 8px; }

.filters-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 4px; }
.filters-bar .form-control { max-width: 220px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--color-border); margin-bottom: 16px; }
.tab-btn { padding: 9px 14px; border: none; background: none; cursor: pointer; font-weight: 600; color: var(--color-text-muted); border-bottom: 2px solid transparent; font-size: 13px; }
.tab-btn.active { color: var(--color-primary); border-color: var(--color-primary); }

.pagination { display: flex; gap: 6px; justify-content: flex-end; padding: 12px 18px; }
.pagination button { border: 1px solid var(--color-border); background: var(--color-surface); border-radius: 6px; padding: 5px 10px; cursor: pointer; font-size: 12px; }
.pagination button.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.warning-list li { padding: 8px 0; border-bottom: 1px dashed var(--color-border); font-size: 12.5px; }
.warning-list li:last-child { border-bottom: none; }

@media (max-width: 900px) {
    .sidebar { position: fixed; z-index: 50; height: 100vh; transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .menu-toggle { display: flex; }
}