:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --danger-dark: #b91c1c;
    --secondary: #64748b;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
}

* { box-sizing: border-box; }

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

.topbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid var(--border);
    gap: 0.6rem;
}

.topbar nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.topbar nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    padding: 0.3rem 0.1rem;
}
.topbar nav a.active, .topbar nav a:hover { color: var(--primary); }

.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 1.2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.4rem;
    margin-bottom: 1.2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

h1, h2 { margin-top: 0; }

label {
    display: block;
    margin-bottom: 1rem;
    font-weight: 500;
    font-size: 0.95rem;
}

input, select {
    width: 100%;
    padding: 0.7rem;
    margin-top: 0.35rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: #fff;
}

.btn {
    display: inline-block;
    border: none;
    border-radius: 8px;
    padding: 0.8rem 1.4rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; width: 100%; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #e2e8f0; color: var(--text); }
.btn-secondary:hover { background: #cbd5e1; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); }
.btn-small { padding: 0.4rem 0.8rem; font-size: 0.85rem; }
.btn-start { margin-top: 0.5rem; }

.error { color: var(--danger); background: #fee2e2; padding: 0.7rem 1rem; border-radius: 8px; }
.success { color: #166534; background: #dcfce7; padding: 0.7rem 1rem; border-radius: 8px; }
.hinweis-text { color: var(--text-muted); font-size: 0.85rem; margin-top: -0.4rem; }

/* Timer */
.timer-card { text-align: center; }
.timer-objekt { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
.timer-display {
    font-size: 3rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    margin: 0.5rem 0;
    letter-spacing: 1px;
}
.timer-status-text { color: var(--text-muted); min-height: 1.2em; margin-bottom: 0.2rem; }
.timer-hinweis { color: var(--text-muted); font-size: 0.85rem; margin: 0 0 1rem; }
.timer-buttons { display: flex; gap: 0.7rem; justify-content: center; flex-wrap: wrap; }
.timer-buttons .btn { flex: 1; min-width: 110px; }

[data-status="pause"] .timer-display { color: var(--secondary); }

/* Objektliste */
.objekt-liste { list-style: none; padding: 0; margin: 0; }
.objekt-liste li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--border);
    gap: 0.6rem;
}
.objekt-liste li:last-child { border-bottom: none; }
.badge {
    display: inline-block;
    font-size: 0.72rem;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    background: #fef3c7;
    color: #92400e;
    margin-left: 0.4rem;
}
.badge-fest { background: #dbeafe; color: #1e40af; }

/* Monat / Tabelle */
.monat-form { display: flex; gap: 1rem; align-items: flex-end; flex-wrap: wrap; }
.monat-form label { margin-bottom: 0; flex: 1; min-width: 130px; }
.export-buttons { display: flex; gap: 0.7rem; margin-top: 1rem; flex-wrap: wrap; }
.export-buttons .btn { flex: 1; min-width: 150px; }

.monat-tabelle { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.monat-tabelle th, .monat-tabelle td {
    text-align: left;
    padding: 0.5rem 0.4rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.monat-tabelle thead th { border-bottom: 2px solid var(--border); }
.monat-tabelle tfoot td { border-top: 2px solid var(--border); border-bottom: none; }

.zeit-gerundet { display: block; font-weight: 600; }
.zeit-echt { display: block; font-size: 0.78rem; color: var(--text-muted); }

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}
.login-box {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    width: 100%;
    max-width: 360px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.login-box h1 { text-align: center; font-size: 1.4rem; margin-bottom: 1.5rem; }
.login-box .error { margin-bottom: 1rem; }

/* Print */
@media print {
    .no-print { display: none !important; }
    body { background: #fff; }
    .container { max-width: 100%; padding: 0; }
    .card { box-shadow: none; border: none; padding: 0; }
}

/* ── Responsive Karten-Tabelle für schmale Bildschirme ─────────────── */
@media (max-width: 640px) {
    .monat-tabelle, .monat-tabelle thead, .monat-tabelle tbody,
    .monat-tabelle tfoot, .monat-tabelle th, .monat-tabelle td, .monat-tabelle tr {
        display: block;
    }
    .monat-tabelle thead { display: none; }
    .monat-tabelle tbody tr {
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 0.5rem 0.8rem;
        margin-bottom: 0.7rem;
    }
    .monat-tabelle td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 0.8rem;
        padding: 0.4rem 0;
        border-bottom: 1px dashed var(--border);
        text-align: right;
    }
    .monat-tabelle td:last-child { border-bottom: none; }
    .monat-tabelle td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-muted);
        text-align: left;
        flex-shrink: 0;
    }
    .monat-tabelle td[data-label="Von"] .zeit-gerundet,
    .monat-tabelle td[data-label="Bis"] .zeit-gerundet,
    .monat-tabelle td[data-label="Von"] .zeit-echt,
    .monat-tabelle td[data-label="Bis"] .zeit-echt {
        text-align: right;
    }
    .monat-tabelle tfoot tr {
        border: none;
        background: #f8fafc;
        border-radius: 10px;
        padding: 0.5rem 0.8rem;
    }
}

@media (max-width: 480px) {
    .timer-display { font-size: 2.3rem; }
}

/* Löschen-Button in der Monatsübersicht */
.zelle-loeschen form { margin: 0; }
.zelle-loeschen .btn { white-space: nowrap; }

@media (max-width: 640px) {
    .monat-tabelle td.zelle-loeschen {
        justify-content: flex-end;
        border-bottom: none;
        padding-top: 0.6rem;
    }
    .monat-tabelle td.zelle-loeschen::before { content: none; }
}