/* Kristal Apartments PMS – application stylesheet
   Palette: deep sea sidebar, off-white content, crystal teal accent. */
:root {
    --sidebar-bg: #0f2a3d;
    --sidebar-bg-2: #143548;
    --sidebar-text: #c9dbe6;
    --sidebar-muted: #7d9bb0;
    --sidebar-active: rgba(255, 255, 255, 0.08);
    --accent: #4fd1c5;
    --primary: #0e7c86;
    --primary-hover: #0b6670;
    --primary-soft: #e0f4f5;
    --bg: #f3f6f8;
    --card: #ffffff;
    --border: #dfe6ec;
    --border-strong: #c7d2db;
    --text: #1b2a35;
    --text-muted: #62778a;
    --danger: #c2410c;
    --danger-soft: #fdebe3;
    --success: #1f7a4d;
    --success-soft: #e3f5ea;
    --warning: #9a6700;
    --warning-soft: #fff4d6;
    --info: #1d5fa5;
    --info-soft: #e3eefb;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 2px rgba(16, 32, 48, 0.06), 0 4px 16px rgba(16, 32, 48, 0.05);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --sidebar-width: 250px;
}

* { box-sizing: border-box; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0 0 0.5rem; line-height: 1.25; font-weight: 650; letter-spacing: -0.01em; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 1rem; }
.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.nowrap { white-space: nowrap; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; } .mt-1 { margin-top: 0.5rem; } .mb-1 { margin-bottom: 0.5rem; }
.mt-2 { margin-top: 1rem; } .mb-2 { margin-bottom: 1rem; } .mt-3 { margin-top: 1.5rem; } .mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; gap: 0.5rem; align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.grow { flex: 1 1 auto; }
[hidden] { display: none !important; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--card); padding: 0.5rem; z-index: 100; }
.skip-link:focus { left: 0.5rem; }
.icon { width: 1.15em; height: 1.15em; vertical-align: -0.2em; flex-shrink: 0; }

/* ---------- Shell ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-2) 100%);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    transition: transform 0.2s ease;
}
.sidebar-brand { display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 1.1rem 0.9rem; }
.brand { display: flex; align-items: center; gap: 0.7rem; color: #fff; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark {
    width: 30px; height: 30px; flex-shrink: 0;
    background: linear-gradient(135deg, #67e8f9 0%, var(--accent) 45%, var(--primary) 100%);
    clip-path: polygon(50% 0%, 100% 35%, 80% 100%, 20% 100%, 0% 35%);
}
.brand-mark-lg { width: 44px; height: 44px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1rem; }
.brand-text small { font-size: 0.72rem; color: var(--sidebar-muted); letter-spacing: 0.04em; text-transform: uppercase; }
.sidebar-close { display: none; color: var(--sidebar-text); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 0.25rem 0.7rem 1rem; }
.nav-group { margin-top: 0.75rem; }
.nav-group-title { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.09em; color: var(--sidebar-muted); padding: 0.4rem 0.7rem; }
.nav-link {
    display: flex; align-items: center; gap: 0.7rem;
    padding: 0.55rem 0.7rem; margin: 2px 0;
    border-radius: var(--radius-sm);
    color: var(--sidebar-text);
    font-weight: 500;
    border-left: 3px solid transparent;
}
.nav-link:hover { background: var(--sidebar-active); color: #fff; text-decoration: none; }
.nav-link.is-active { background: var(--sidebar-active); color: #fff; border-left-color: var(--accent); }
.nav-link .icon { width: 1.2rem; height: 1.2rem; opacity: 0.9; }
.sidebar-footer { display: flex; align-items: center; gap: 0.5rem; padding: 0.8rem 0.9rem; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.sidebar-user { display: flex; align-items: center; gap: 0.6rem; color: var(--sidebar-text); flex: 1; min-width: 0; }
.sidebar-user:hover { color: #fff; text-decoration: none; }
.sidebar-user-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.sidebar-user-text strong { font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-text small { font-size: 0.72rem; color: var(--sidebar-muted); }
.sidebar-footer .icon-btn { color: var(--sidebar-muted); }
.sidebar-footer .icon-btn:hover { color: #fff; background: var(--sidebar-active); }
.avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    color: #fff; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.avatar-sm { width: 28px; height: 28px; font-size: 0.8rem; }
.sidebar-backdrop { position: fixed; inset: 0; background: rgba(10, 25, 40, 0.5); z-index: 35; }

.main-column { flex: 1; display: flex; flex-direction: column; min-width: 0; margin-left: var(--sidebar-width); }
.topbar {
    display: flex; align-items: center; gap: 1rem;
    padding: 0.7rem 1.5rem;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 30;
}
.topbar-menu { display: none; }
.topbar-title { font-size: 1.2rem; margin: 0; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-actions { display: flex; align-items: center; gap: 1rem; }
.topbar-user { display: flex; align-items: center; gap: 0.5rem; color: var(--text); font-weight: 500; }
.topbar-user:hover { text-decoration: none; color: var(--primary); }
.lang-switch { display: flex; align-items: center; gap: 0.25rem; color: var(--text-muted); }
.lang-btn {
    background: none; border: 1px solid transparent; border-radius: 999px;
    padding: 0.15rem 0.55rem; font: inherit; font-size: 0.8rem; font-weight: 600; cursor: pointer; color: var(--text-muted);
}
.lang-btn:hover { color: var(--primary); border-color: var(--border-strong); }
.lang-btn.is-active { background: var(--primary-soft); color: var(--primary); border-color: transparent; }
.content { flex: 1; padding: 1.5rem; max-width: 1400px; width: 100%; }
.footer { display: flex; justify-content: space-between; padding: 1rem 1.5rem; color: var(--text-muted); font-size: 0.8rem; border-top: 1px solid var(--border); }

/* ---------- Public (login) ---------- */
body.public { background: radial-gradient(1200px 600px at 10% -10%, #dff3f5 0%, var(--bg) 55%); }
.public-shell { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 2rem 1rem; }
.public-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); padding: 2rem; width: 100%; max-width: 420px; }
.public-brand { display: flex; align-items: center; gap: 0.9rem; margin-bottom: 1.5rem; }
.public-brand strong { display: block; font-size: 1.2rem; }
.public-brand small { color: var(--text-muted); font-size: 0.8rem; letter-spacing: 0.03em; }
.public-title { font-size: 1.3rem; margin-bottom: 0.25rem; }
.lang-switch-public { margin-top: 1.25rem; }
.public-footer { color: var(--text-muted); font-size: 0.8rem; margin-top: 1rem; }

/* ---------- Cards ---------- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 1.5rem; }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 1.25rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.card-header h2 { margin: 0; }
.card-body { padding: 1.25rem; }
.card-footer { padding: 0.9rem 1.25rem; border-top: 1px solid var(--border); background: #fafcfd; border-radius: 0 0 var(--radius) var(--radius); }
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.page-header h1 { margin: 0; }
.page-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* Stat tiles */
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.15rem; box-shadow: var(--shadow); display: flex; align-items: center; gap: 0.9rem; }
.stat-icon { width: 42px; height: 42px; border-radius: 10px; background: var(--primary-soft); color: var(--primary); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-icon .icon { width: 22px; height: 22px; }
.stat-icon.green { background: var(--success-soft); color: var(--success); }
.stat-icon.amber { background: var(--warning-soft); color: var(--warning); }
.stat-icon.blue { background: var(--info-soft); color: var(--info); }
.stat-icon.red { background: var(--danger-soft); color: var(--danger); }
.stat-value { font-size: 1.5rem; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--text-muted); font-size: 0.82rem; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 0.95rem; border-radius: var(--radius-sm);
    border: 1px solid transparent; font: inherit; font-weight: 600; font-size: 0.92rem;
    cursor: pointer; text-decoration: none; line-height: 1.3; white-space: nowrap;
    transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-light { background: var(--card); color: var(--text); border-color: var(--border-strong); }
.btn-light:hover { background: #f4f7f9; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #a3360a; color: #fff; }
.btn-outline-danger { background: var(--card); color: var(--danger); border-color: var(--danger); }
.btn-outline-danger:hover { background: var(--danger-soft); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #17653e; color: #fff; }
.btn-sm { padding: 0.32rem 0.65rem; font-size: 0.82rem; }
.btn-block { width: 100%; justify-content: center; }
.btn[disabled], .btn.is-disabled { opacity: 0.55; cursor: not-allowed; pointer-events: none; }
.icon-btn { background: none; border: none; padding: 0.35rem; border-radius: var(--radius-sm); cursor: pointer; color: var(--text-muted); display: inline-flex; align-items: center; justify-content: center; font: inherit; }
.icon-btn:hover { background: var(--bg); color: var(--text); }
.icon-btn .icon { width: 1.25rem; height: 1.25rem; }
.inline-form { display: inline; margin: 0; }
.btn-group { display: inline-flex; gap: 0.25rem; }

/* ---------- Forms ---------- */
.form .field { margin-bottom: 1rem; }
.field label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 0.3rem; }
.field input[type="text"], .field input[type="email"], .field input[type="password"], .field input[type="number"],
.field input[type="date"], .field input[type="time"], .field input[type="tel"], .field input[type="search"], .field select, .field textarea,
.filters input, .filters select {
    width: 100%; padding: 0.5rem 0.7rem; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
    font: inherit; color: var(--text); background: var(--card); transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
.field input:focus, .field select:focus, .field textarea:focus, .filters input:focus, .filters select:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14, 124, 134, 0.15);
}
.field input[disabled], .field select[disabled], .field textarea[disabled] { background: var(--bg); color: var(--text-muted); }
.field textarea { min-height: 96px; resize: vertical; }
.field-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; }
.field-error { font-size: 0.82rem; color: var(--danger); margin-top: 0.3rem; font-weight: 500; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
.field-inline { display: flex; align-items: center; gap: 0.5rem; }
.field-inline input[type="checkbox"] { width: 1.05rem; height: 1.05rem; accent-color: var(--primary); }
.checkbox { display: inline-flex; align-items: center; gap: 0.45rem; font-weight: 500; cursor: pointer; }
.checkbox input { width: 1.05rem; height: 1.05rem; accent-color: var(--primary); margin: 0; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 1rem; }
.form-row-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-actions { display: flex; gap: 0.5rem; align-items: center; margin-top: 0.5rem; padding-top: 1rem; border-top: 1px solid var(--border); flex-wrap: wrap; }
.input-group { display: flex; }
.input-group > select { width: auto; border-radius: var(--radius-sm) 0 0 var(--radius-sm); flex: 0 0 auto; }
.input-group > input { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-left: -1px; }
.filters { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; margin-bottom: 1rem; }
.filters .field { margin: 0; min-width: 160px; }
.filters .field label { font-size: 0.78rem; color: var(--text-muted); }
.filters input, .filters select { padding: 0.42rem 0.6rem; }
.required-hint { color: var(--text-muted); font-size: 0.8rem; margin-bottom: 1rem; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td { padding: 0.65rem 0.9rem; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table th { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); font-weight: 650; background: #fafcfd; white-space: nowrap; }
.table tbody tr:hover { background: #f7fafb; }
.table td.actions, .table th.actions { text-align: right; white-space: nowrap; }
.table td.num, .table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table .row-link { color: var(--text); font-weight: 600; }
.table .row-link:hover { color: var(--primary); }
.card > .table-wrap > .table tr:last-child td { border-bottom: none; }
.empty { padding: 2.5rem 1rem; text-align: center; color: var(--text-muted); }
.empty .icon { width: 2rem; height: 2rem; opacity: 0.4; display: block; margin: 0 auto 0.5rem; }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.75rem; font-weight: 650; letter-spacing: 0.02em; line-height: 1.5; white-space: nowrap; }
.badge-gray { background: #e9eef2; color: #4a5f70; }
.badge-green { background: var(--success-soft); color: var(--success); }
.badge-blue { background: var(--info-soft); color: var(--info); }
.badge-amber { background: var(--warning-soft); color: var(--warning); }
.badge-red { background: var(--danger-soft); color: var(--danger); }
.badge-teal { background: var(--primary-soft); color: var(--primary); }

/* ---------- Alerts ---------- */
.alert { display: flex; align-items: flex-start; gap: 0.6rem; padding: 0.75rem 0.9rem; border-radius: var(--radius-sm); margin-bottom: 1rem; border: 1px solid transparent; font-size: 0.92rem; }
.alert .icon { margin-top: 0.15rem; }
.alert span { flex: 1; }
.alert-success { background: var(--success-soft); color: var(--success); border-color: #bfe6cd; }
.alert-error { background: var(--danger-soft); color: var(--danger); border-color: #f5c9b4; }
.alert-warning { background: var(--warning-soft); color: var(--warning); border-color: #f0dfa5; }
.alert-info { background: var(--info-soft); color: var(--info); border-color: #bcd4f2; }
.alert-close { background: none; border: none; cursor: pointer; color: inherit; padding: 0; opacity: 0.7; display: inline-flex; }
.alert-close:hover { opacity: 1; }

/* ---------- Pagination ---------- */
.pagination { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.8rem 1.25rem; border-top: 1px solid var(--border); flex-wrap: wrap; font-size: 0.88rem; color: var(--text-muted); }
.pagination-links { display: flex; align-items: center; gap: 0.5rem; }

/* ---------- Description lists ---------- */
.dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.25rem; margin: 0; font-size: 0.93rem; }
.dl dt { color: var(--text-muted); font-weight: 500; }
.dl dd { margin: 0; font-weight: 500; }

/* ---------- Modal ---------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(10, 25, 40, 0.55); display: flex; align-items: center; justify-content: center; z-index: 60; padding: 1rem; }
.modal { background: var(--card); border-radius: var(--radius); padding: 1.5rem; width: 100%; max-width: 420px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25); }
.modal h3 { margin-bottom: 0.5rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1.25rem; }

/* ---------- Error pages ---------- */
.error-page { text-align: center; padding: 3rem 1rem; max-width: 640px; margin: 0 auto; }
.error-code { font-size: 4rem; font-weight: 800; color: var(--border-strong); line-height: 1; margin-bottom: 0.5rem; }
.error-trace { text-align: left; background: #1b2a35; color: #d9e6ef; padding: 1rem; border-radius: var(--radius-sm); overflow: auto; font-size: 0.78rem; margin-top: 2rem; }

/* ---------- Permission matrix ---------- */
.perm-table td:not(:first-child), .perm-table th:not(:first-child) { text-align: center; width: 110px; }
.perm-table input[type="checkbox"] { width: 1.1rem; height: 1.1rem; accent-color: var(--primary); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
    .sidebar { transform: translateX(-100%); box-shadow: none; }
    body.sidebar-open .sidebar { transform: translateX(0); box-shadow: 0 0 40px rgba(0, 0, 0, 0.3); }
    body.sidebar-open .sidebar-backdrop { display: block !important; }
    .sidebar-close { display: inline-flex; }
    .main-column { margin-left: 0; }
    .topbar-menu { display: inline-flex; }
    .topbar { padding: 0.6rem 1rem; }
    .topbar-user-name { display: none; }
    .content { padding: 1rem; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
}
@media print {
    .sidebar, .topbar, .footer, .page-actions, .filters, .pagination, .btn, .modal-backdrop { display: none !important; }
    .main-column { margin-left: 0; }
    .card { box-shadow: none; }
}