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

:root {
    --bg:          #f0f2f5;
    --surface:     #ffffff;
    --surface-2:   #f8f9fb;
    --border:      #e4e7ec;
    --text:        #111827;
    --text-muted:  #6b7280;
    --text-subtle: #9ca3af;

    --primary:     #4f46e5;
    --primary-light: #eef2ff;
    --primary-dark:  #3730a3;

    --success:     #059669;
    --success-light: #ecfdf5;
    --danger:      #dc2626;
    --danger-light:  #fef2f2;
    --warning:     #d97706;
    --warning-light: #fffbeb;

    --positive:    #059669;
    --negative:    #dc2626;

    --radius-sm:   6px;
    --radius:      12px;
    --radius-lg:   16px;

    --shadow-sm:   0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow:      0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);
    --shadow-md:   0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);

    --header-h:    60px;
}

/* ── Base ────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ── Header / Nav ────────────────────────────────────────── */
.site-header {
    height: var(--header-h);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 200;
}

.logo {
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -.02em;
    white-space: nowrap;
    flex-shrink: 0;
}

nav {
    display: flex;
    align-items: center;
    gap: .25rem;
    flex: 1;
    flex-wrap: wrap;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    padding: .375rem .75rem;
    border-radius: var(--radius-sm);
    transition: background .15s, color .15s;
    white-space: nowrap;
}

nav a:hover { color: var(--text); background: var(--surface-2); }
nav a.active { color: var(--primary); background: var(--primary-light); }
nav a.nav-logout { margin-left: auto; color: var(--text-subtle); }
nav a.nav-logout:hover { color: var(--danger); background: var(--danger-light); }

.nav-toggle { display: none; }

/* ── Layout ──────────────────────────────────────────────── */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.page-header { margin-bottom: .25rem; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -.02em; }
.page-subtitle { color: var(--text-muted); font-size: .9rem; margin-top: .2rem; }

/* ── Cards ───────────────────────────────────────────────── */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    padding: 1.5rem;
}

.card h2 { font-size: 1rem; font-weight: 600; margin-bottom: 1.1rem; }
.card h3 { font-size: .95rem; font-weight: 600; margin-bottom: 1rem; }

/* ── Hero stat cards ─────────────────────────────────────── */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.summary-card {
    display: flex;
    flex-direction: column;
    gap: .4rem;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #818cf8);
    border-radius: var(--radius) var(--radius) 0 0;
}

/* ── Stat grid ───────────────────────────────────────────── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1.25rem;
}

.stat { display: flex; flex-direction: column; gap: .25rem; }

.stat-label {
    font-size: .72rem;
    color: var(--text-subtle);
    text-transform: uppercase;
    letter-spacing: .07em;
    font-weight: 600;
}

.stat-value { font-size: 1.3rem; font-weight: 700; letter-spacing: -.02em; }
.stat-value.big { font-size: 1.75rem; }

.positive { color: var(--positive); }
.negative { color: var(--negative); }

/* ── Check-in card ───────────────────────────────────────── */
.checkin-card {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border: none;
    color: #fff;
}

.checkin-card h2 { color: rgba(255,255,255,.7); }
.checkin-card .stat-label { color: rgba(255,255,255,.6); }
.checkin-card .stat-value { color: #fff; }

.checkin-card form {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
    margin-top: 1rem;
    align-items: center;
}

.checkin-card input[type="text"] {
    flex: 1;
    min-width: 180px;
    background: rgba(255,255,255,.15);
    border-color: rgba(255,255,255,.3);
    color: #fff;
}

.checkin-card input[type="text"]::placeholder { color: rgba(255,255,255,.6); }
.checkin-card input[type="text"]:focus {
    background: rgba(255,255,255,.25);
    border-color: rgba(255,255,255,.6);
    box-shadow: 0 0 0 3px rgba(255,255,255,.15);
}

.status { font-size: 1.1rem; font-weight: 600; }
.status.checked-in  { color: #fff; }
.status.checked-out { color: rgba(255,255,255,.8); }

/* ── Tables ──────────────────────────────────────────────── */
.week-table, .entries-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}

.week-table th, .week-table td,
.entries-table th, .entries-table td {
    padding: .65rem .9rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.week-table thead th, .entries-table thead th {
    color: var(--text-subtle);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .07em;
    font-weight: 600;
    background: var(--surface-2);
    border-bottom: 2px solid var(--border);
}

.week-table thead th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.week-table thead th:last-child  { border-radius: 0 var(--radius-sm) 0 0; }

.week-table tfoot th {
    border-top: 2px solid var(--border);
    font-weight: 700;
    background: var(--surface-2);
}

tr.today-row td {
    background: var(--primary-light);
    font-weight: 600;
    color: var(--primary-dark);
}

.entries-table tbody tr:hover td { background: var(--surface-2); }
.entries-table tbody tr:last-child td { border-bottom: none; }

.actions { display: flex; gap: .5rem; white-space: nowrap; }
.inline-form { display: inline; }

/* ── Week bar chart ──────────────────────────────────────── */
.week-bar {
    height: 6px;
    background: var(--border);
    border-radius: 99px;
    margin-top: 4px;
    overflow: hidden;
}
.week-bar-fill {
    height: 100%;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--primary), #818cf8);
    transition: width .3s ease;
}
.week-bar-fill.over { background: linear-gradient(90deg, var(--success), #34d399); }
.week-bar-fill.under { background: linear-gradient(90deg, #f59e0b, #fbbf24); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .5rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: background .15s, transform .1s, box-shadow .15s;
    white-space: nowrap;
    letter-spacing: -.01em;
}

.btn:active { transform: scale(.97); }

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 1px 3px rgba(79,70,229,.3);
}
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 4px 8px rgba(79,70,229,.3); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-secondary { background: var(--border); color: var(--text); }
.btn-secondary:hover { background: #d1d5db; }

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; }

.btn-sm { padding: .3rem .65rem; font-size: .8rem; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1rem; }

/* ── Forms ───────────────────────────────────────────────── */
input[type="text"],
input[type="password"],
input[type="date"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    padding: .55rem .8rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    transition: border-color .15s, box-shadow .15s;
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}

label {
    display: flex;
    flex-direction: column;
    gap: .3rem;
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: .01em;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: flex-end;
}
.form-row label { flex: 1; min-width: 150px; }

.checkbox-label {
    flex-direction: row;
    align-items: center;
    gap: .5rem;
    color: var(--text);
    cursor: pointer;
    font-weight: 500;
}
.checkbox-label input { width: auto; }

.add-form { display: flex; flex-direction: column; gap: .75rem; }

.inline-edit-form {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    align-items: flex-end;
    padding: .75rem;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
}
.inline-edit-form label { min-width: 150px; flex: 1; }

/* ── File drop ───────────────────────────────────────────── */
.file-drop {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
    transition: border-color .2s, background .2s;
    margin-bottom: 1rem;
    cursor: pointer;
}
.file-drop:hover { border-color: var(--primary); background: var(--primary-light); }
.file-drop input[type="file"] {
    position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.file-drop-icon { font-size: 2.5rem; display: block; margin-bottom: .5rem; }
.file-drop-text { display: block; font-weight: 600; color: var(--text); }
.file-drop-hint { display: block; font-size: .8rem; color: var(--text-muted); margin-top: .25rem; }

/* ── Export page ─────────────────────────────────────────── */
.export-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}
.export-count { color: var(--text-muted); font-size: .875rem; margin-bottom: .5rem; }
.csv-hint {
    font-size: .825rem;
    color: var(--text-muted);
    padding: .75rem 1rem;
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

/* ── Code block ──────────────────────────────────────────── */
.code-block {
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    font-size: .8rem;
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    line-height: 1.7;
}

code {
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: .8em;
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: .1em .4em;
    border-radius: 4px;
    color: var(--primary);
}

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
    padding: .85rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.alert-success {
    background: var(--success-light);
    color: #065f46;
    border: 1px solid #6ee7b7;
}
.alert-error {
    background: var(--danger-light);
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.error { color: var(--danger); font-size: .875rem; margin-bottom: .75rem; }

.hint {
    font-size: .825rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.empty {
    text-align: center;
    color: var(--text-subtle);
    padding: 3rem 0;
    font-size: .9rem;
}

/* ── Month nav ───────────────────────────────────────────── */
.month-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.month-nav h2 { flex: 1; text-align: center; font-size: 1.1rem; }

/* ── Login page ──────────────────────────────────────────── */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.login-box {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 380px;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.login-box h1 {
    font-size: 1.6rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -.03em;
    color: var(--primary);
}

.login-box form { display: flex; flex-direction: column; gap: .75rem; }

/* ── Import form ─────────────────────────────────────────── */
.import-form { display: flex; flex-direction: column; gap: .75rem; }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: .15rem .5rem;
    border-radius: 99px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .03em;
    white-space: nowrap;
}
.badge-overtime  { background: #fef3c7; color: #92400e; }
.badge-gleitzeit { background: var(--primary-light); color: var(--primary-dark); }

/* ── Summary card variants ───────────────────────────────── */
.summary-card--gleitzeit::before {
    background: linear-gradient(90deg, var(--primary), #818cf8);
}
.summary-card--overtime::before {
    background: linear-gradient(90deg, #d97706, #fbbf24);
}

.stat-hint {
    font-size: .72rem;
    color: var(--text-subtle);
    margin-top: .1rem;
}

/* ── Day cell in month table ─────────────────────────────── */
.day-cell {
    vertical-align: top;
    padding-top: .75rem !important;
    min-width: 110px;
}
.day-label { font-weight: 700; font-size: .875rem; }
.day-saldo { font-size: .8rem; margin-top: .15rem; }

/* ── Overtime toggle button ──────────────────────────────── */
.btn-overtime {
    background: transparent;
    border: 1px dashed var(--border);
    color: var(--text-subtle);
}
.btn-overtime:hover { border-color: #d97706; color: #d97706; background: #fffbeb; }

.btn-overtime-active {
    background: #fef3c7;
    border: 1px solid #fcd34d;
    color: #92400e;
    font-weight: 700;
}
.btn-overtime-active:hover { background: #fde68a; }

/* ── Misc ────────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1rem 0;
}

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 700px) {
    .site-header { padding: 0 1rem; }

    .nav-toggle {
        display: flex;
        flex-direction: column;
        gap: 4px;
        margin-left: auto;
        background: none;
        border: none;
        cursor: pointer;
        padding: .5rem;
    }
    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--text);
        border-radius: 2px;
        transition: transform .2s;
    }

    nav {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0; right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        flex-direction: column;
        padding: .75rem 1rem;
        gap: .25rem;
    }

    nav a { width: 100%; padding: .6rem .75rem; }
    nav a.nav-logout { margin-left: 0; }

    .site-header.nav-open nav { display: flex; }

    .container { padding: 1rem .75rem; }
    .card { padding: 1.1rem; }
    .stat-value.big { font-size: 1.4rem; }

    .week-table, .entries-table { font-size: .8rem; }
    .week-table th, .week-table td,
    .entries-table th, .entries-table td { padding: .5rem .5rem; }

    .export-buttons { flex-direction: column; }
    .btn-lg { width: 100%; }

    .summary-cards { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
    .summary-cards { grid-template-columns: 1fr; }
}

/* ── Jahreskalender ─────────────────────────────────────── */
.year-nav { display:flex; align-items:center; justify-content:center; gap:1.5rem; margin-bottom:1.5rem; }
.year-nav h2 { font-size:1.4rem; font-weight:700; }

.year-grid { display:grid; grid-template-columns:1fr 1fr; gap:1.25rem; }
@media (max-width:700px) { .year-grid { grid-template-columns:1fr; } }

.month-block { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:1rem; box-shadow:var(--shadow-sm); }
.month-block h3 { font-size:.95rem; font-weight:700; margin-bottom:.5rem; }

.cal-grid { display:grid; grid-template-columns:repeat(7,1fr); gap:2px; }
.cal-header { font-size:.65rem; font-weight:600; text-align:center; color:var(--text-subtle); padding:2px 0; }

.day-tile {
    aspect-ratio:1; border-radius:4px; font-size:.65rem; font-weight:600;
    display:flex; flex-direction:column; align-items:center; justify-content:center;
    cursor:default; user-select:none; line-height:1.1;
    border:1px solid transparent; position:relative;
}
.day-tile[data-selectable="1"] { cursor:pointer; }
.day-tile[data-selectable="1"]:hover { border-color:var(--primary); }

.day-tile.tile-weekend   { background:#f3f4f6; color:var(--text-subtle); }
.day-tile.tile-empty     { background:var(--surface-2); color:var(--text); }
.day-tile.tile-vacation  { background:#dcfce7; color:#15803d; }
.day-tile.tile-gleitzeit { background:#dbeafe; color:#1d4ed8; }
.day-tile.tile-overtime  { background:#ede9fe; color:#7c3aed; }
.day-tile.tile-sick      { background:#fee2e2; color:#b91c1c; }
.day-tile.tile-holiday   { background:#ffedd5; color:#c2410c; }
.day-tile.tile-halfday   { opacity:.65; }
.day-tile.tile-filler    { background:transparent; border:none; cursor:default; }
.day-tile.selected       { outline:2px solid var(--primary); outline-offset:1px; }

.tile-label { font-size:.55rem; font-weight:700; letter-spacing:.02em; line-height:1; }

/* Auswahl-Panel */
.year-panel-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.3); z-index:500; align-items:center; justify-content:center; }
.year-panel-overlay.active { display:flex; }
.year-panel { background:var(--surface); border-radius:var(--radius); padding:1.5rem; box-shadow:var(--shadow-md); min-width:280px; display:flex; flex-direction:column; gap:1rem; }
.year-panel h3 { font-size:1rem; font-weight:700; }
.year-panel-types { display:flex; gap:.5rem; flex-wrap:wrap; }
.year-panel-types button { flex:1; padding:.5rem; border:2px solid var(--border); border-radius:var(--radius-sm); background:var(--surface-2); font-weight:700; font-size:.85rem; cursor:pointer; }
.year-panel-types button.active-type { border-color:var(--primary); background:var(--primary-light); }
.year-panel-actions { display:flex; gap:.5rem; justify-content:flex-end; }

/* Legende */
.year-legend { display:flex; flex-wrap:wrap; gap:.75rem; margin-top:1.5rem; font-size:.8rem; }
.legend-item { display:flex; align-items:center; gap:.4rem; }
.legend-dot { width:14px; height:14px; border-radius:3px; flex-shrink:0; }