:root {
    --color-bg: #f4f6f8;
    --color-surface: #ffffff;
    --color-border: #e1e5ea;
    --color-text: #1f2937;
    --color-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-success: #15803d;
    --color-success-bg: #dcfce7;
    --color-danger: #b91c1c;
    --color-danger-bg: #fee2e2;
    --color-pending: #92400e;
    --color-pending-bg: #fef3c7;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

/* Top navigation */
.topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}
.topbar-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--color-primary); text-decoration: none; display: flex; align-items: center; }
.brand-logo { height: 40px; width: auto; display: block; }
.nav { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--color-text); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--color-primary); }
.user-box { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; color: var(--color-muted); }

/* Headings */
h1 { font-size: 1.6rem; margin: 0 0 16px; }
h2 { font-size: 1.15rem; margin: 32px 0 12px; }

.page-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

/* Cards / stats */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 24px; }
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
}
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat-label { font-size: 0.8rem; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-negative .stat-value { color: var(--color-danger); }

/* Forms */
.form { display: flex; flex-direction: column; gap: 14px; max-width: 420px; }
.form-inline { flex-direction: row; flex-wrap: wrap; max-width: none; align-items: flex-end; }
.form-inline label { flex: 1 1 160px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; color: var(--color-muted); }
input, select, button {
    font: inherit;
}
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], select {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-surface);
    color: var(--color-text);
}
.small-input { width: 90px; }
.comment-input { padding: 6px 8px; border: 1px solid var(--color-border); border-radius: 6px; margin-right: 6px; }

.auth-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    max-width: 440px;
    margin: 40px auto;
}
.auth-logo { text-align: center; margin-bottom: 16px; }
.auth-logo img { max-width: 170px; width: 100%; height: auto; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    text-decoration: none;
    cursor: pointer;
    font-size: 0.9rem;
}
.btn:hover { border-color: #c7cdd6; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-small { padding: 5px 10px; font-size: 0.82rem; }
.btn-danger { background: var(--color-danger-bg); border-color: var(--color-danger-bg); color: var(--color-danger); }
.btn-approve { background: var(--color-success-bg); border-color: var(--color-success-bg); color: var(--color-success); }

/* Tables */
.table { width: 100%; border-collapse: collapse; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--color-border); text-align: left; font-size: 0.92rem; vertical-align: middle; }
.table th { background: #f9fafb; font-weight: 600; color: var(--color-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
.table tr:last-child td { border-bottom: none; }
.decision-actions form { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.hidden-form { display: contents; }
.inline-form { display: inline; }

/* Badges */
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.badge-pending  { background: var(--color-pending-bg); color: var(--color-pending); }
.badge-approved { background: var(--color-success-bg); color: var(--color-success); }
.badge-rejected { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-cancelled{ background: #e5e7eb; color: var(--color-muted); }

/* Alerts */
.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 0.92rem; }
.alert-success { background: var(--color-success-bg); color: var(--color-success); }
.alert-error   { background: var(--color-danger-bg); color: var(--color-danger); }

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

/* Calendar */
.calendar { width: 100%; border-collapse: collapse; table-layout: fixed; background: var(--color-surface); border: 1px solid var(--color-border); }
.calendar th { padding: 8px; background: #f9fafb; font-size: 0.8rem; color: var(--color-muted); }
.calendar td { border: 1px solid var(--color-border); vertical-align: top; height: 90px; padding: 6px; font-size: 0.8rem; }
.calendar td.empty { background: #fafafa; }
.calendar td.weekend { background: #fafafa; }
.calendar td.holiday { background: #fff7ed; }
.day-number { font-weight: 600; margin-bottom: 4px; }
.holiday-name { color: #c2410c; font-size: 0.72rem; margin-bottom: 4px; }
.day-people { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.day-people li { background: #eff6ff; color: var(--color-primary-dark); border-radius: 4px; padding: 1px 5px; font-size: 0.72rem; }

@media (max-width: 640px) {
    .topbar-inner { flex-direction: column; align-items: flex-start; }
    .table, .table thead, .table tbody, .table tr, .table td, .table th { display: block; }
    .table thead { display: none; }
    .table tr { margin-bottom: 12px; border: 1px solid var(--color-border); border-radius: 6px; }
    .table td { border-bottom: none; }
}