/* SmartKalender – Mobile-First PWA */
:root {
    --bg: #0f0f0f;
    --bg-card: #1a1a1a;
    --bg-input: #1e1e1e;
    --bg-hover: #252525;
    --text: #e8e8e8;
    --text-muted: #888;
    --accent: #4a9eff;
    --accent-hover: #6bb3ff;
    --accent-dim: rgba(74, 158, 255, 0.15);
    --danger: #ff4a4a;
    --success: #4aff8b;
    --recurring: #b47aff;
    --recurring-dim: rgba(180, 122, 255, 0.15);
    --border: #2a2a2a;
    --radius: 12px;
    --radius-sm: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro', 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
}

#app {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 16px;
    padding-bottom: env(safe-area-inset-bottom, 20px);
}

/* Header */
#header {
    padding: 20px 0 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
#header h1 { font-size: 1.4rem; font-weight: 700; }
#header-date { font-size: 0.85rem; color: var(--text-muted); }

/* Input Section */
#input-section { margin: 8px 0 16px; }

/* Event Type Toggle */
#type-toggle {
    display: flex;
    gap: 4px;
    margin-bottom: 10px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 3px;
}
.type-btn {
    flex: 1;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}
.type-btn.active-single { background: var(--accent); color: #fff; }
.type-btn.active-recurring { background: var(--recurring); color: #fff; }

#input-wrapper {
    display: flex;
    gap: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 4px;
    transition: border-color 0.2s;
}
#input-wrapper:focus-within { border-color: var(--accent); }
#input-wrapper.recurring:focus-within { border-color: var(--recurring); }

#event-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 1rem;
    padding: 12px;
    outline: none;
}
#event-input::placeholder { color: var(--text-muted); }

#send-btn {
    background: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
}
#send-btn:hover { background: var(--accent-hover); }
#send-btn:active { transform: scale(0.95); }
#send-btn.recurring { background: var(--recurring); }

#input-feedback {
    margin-top: 8px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    animation: slideDown 0.2s ease;
}
#input-feedback.success {
    background: rgba(74, 255, 139, 0.1);
    color: var(--success);
    border: 1px solid rgba(74, 255, 139, 0.2);
}
#input-feedback.error {
    background: rgba(255, 74, 74, 0.1);
    color: var(--danger);
    border: 1px solid rgba(255, 74, 74, 0.2);
}

/* Tabs */
#view-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 4px;
}
.tab {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}
.tab.active { background: var(--accent); color: #fff; }

/* Navigation (Woche/Monat vor/zurück) */
#view-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
#view-nav .nav-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: background 0.2s;
}
#view-nav .nav-btn:hover { background: var(--bg-hover); }
#view-nav .nav-label {
    font-size: 0.95rem;
    font-weight: 600;
}
#view-nav .nav-today {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
}
#view-nav .nav-today:hover { background: var(--bg-hover); }

/* ====== TODAY LIST VIEW ====== */
#today-view .day-header {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 8px 0 6px;
    margin-top: 8px;
}
#today-view .day-header:first-child { margin-top: 0; }

.event-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: fadeIn 0.3s ease;
    transition: border-color 0.2s;
}
.event-card:hover { border-color: var(--accent); }
.event-card.recurring { border-left: 3px solid var(--recurring); }

.event-time { min-width: 50px; text-align: center; flex-shrink: 0; }
.event-time .time { font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.event-time .date { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.event-time .allday { font-size: 0.75rem; font-weight: 600; color: var(--accent); }

.event-info { flex: 1; min-width: 0; }
.event-info .title { font-size: 1rem; font-weight: 600; margin-bottom: 2px; }
.event-info .desc { font-size: 0.85rem; color: var(--text-muted); }
.event-info .badges { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.event-info .badge {
    display: inline-block;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
}
.event-info .badge.recurring-badge { background: var(--recurring-dim); color: var(--recurring); }

.event-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    font-size: 1.2rem;
    line-height: 1;
    transition: color 0.2s;
    flex-shrink: 0;
}
.event-delete:hover { color: var(--danger); }

/* ====== WEEK VIEW ====== */
#week-view { overflow-x: auto; }

.week-grid {
    display: grid;
    grid-template-columns: 50px repeat(7, 1fr);
    min-width: 600px;
}

.week-header {
    display: contents;
}
.week-header-cell {
    text-align: center;
    padding: 8px 4px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
.week-header-cell.today-col {
    color: var(--accent);
}
.week-header-cell .day-num {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-top: 2px;
}
.week-header-cell.today-col .day-num {
    background: var(--accent);
    color: #fff;
    width: 28px;
    height: 28px;
    line-height: 28px;
    border-radius: 50%;
    margin: 2px auto 0;
}
.week-header-corner {
    border-bottom: 1px solid var(--border);
}

.week-hour-row {
    display: contents;
}
.week-hour-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: right;
    padding: 0 6px;
    position: relative;
    height: 48px;
}
.week-hour-label span {
    position: absolute;
    top: -7px;
    right: 6px;
}
.week-cell {
    border-left: 1px solid var(--border);
    border-bottom: 1px solid rgba(255,255,255,0.03);
    height: 48px;
    position: relative;
    cursor: default;
}
.week-cell:hover { background: rgba(255,255,255,0.02); }

.week-event {
    position: absolute;
    left: 2px;
    right: 2px;
    background: var(--accent-dim);
    border-left: 2px solid var(--accent);
    border-radius: 3px;
    padding: 2px 4px;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent);
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    z-index: 1;
    cursor: pointer;
}
.week-event.recurring {
    background: var(--recurring-dim);
    border-left-color: var(--recurring);
    color: var(--recurring);
}

.week-allday-row {
    display: contents;
}
.week-allday-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-align: right;
    padding: 4px 6px;
    border-bottom: 1px solid var(--border);
}
.week-allday-cell {
    border-left: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 2px;
    min-height: 28px;
}
.week-allday-event {
    background: var(--accent-dim);
    color: var(--accent);
    font-size: 0.65rem;
    font-weight: 500;
    padding: 1px 4px;
    border-radius: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ====== MONTH VIEW ====== */
.month-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.month-header-cell {
    background: var(--bg-card);
    text-align: center;
    padding: 8px 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}
.month-day {
    background: var(--bg);
    min-height: 80px;
    padding: 4px;
    cursor: default;
    transition: background 0.15s;
}
.month-day:hover { background: var(--bg-card); }
.month-day.other-month { opacity: 0.3; }
.month-day.today { background: var(--bg-card); }

.month-day-num {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.month-day.today .month-day-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: #fff;
    width: 22px;
    height: 22px;
    border-radius: 50%;
}

.month-event {
    font-size: 0.65rem;
    padding: 1px 4px;
    border-radius: 3px;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background: var(--accent-dim);
    color: var(--accent);
    font-weight: 500;
}
.month-event.recurring {
    background: var(--recurring-dim);
    color: var(--recurring);
}
.month-event.allday {
    background: var(--accent);
    color: #fff;
}
.month-more {
    font-size: 0.6rem;
    color: var(--text-muted);
    padding: 1px 4px;
}

/* ====== DAY VIEW (Zeitraster) ====== */
.day-grid {
    animation: fadeIn 0.3s ease;
}

.day-allday-section {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 4px;
}
.day-allday-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 50px;
    text-align: right;
    padding-top: 4px;
}
.day-allday-events {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.day-allday-event {
    background: var(--accent-dim);
    border-left: 3px solid var(--accent);
    color: var(--text);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}
.day-allday-event.recurring {
    background: var(--recurring-dim);
    border-left-color: var(--recurring);
}

.day-time-grid {
    position: relative;
}

.day-hour-row {
    display: flex;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}
.day-hour-label {
    min-width: 50px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
    padding-right: 10px;
    padding-top: 0;
    line-height: 1;
    transform: translateY(-7px);
}
.day-hour-cell {
    flex: 1;
    height: 60px;
    position: relative;
    border-left: 1px solid var(--border);
}

.day-event {
    position: absolute;
    left: 6px;
    right: 6px;
    background: var(--accent-dim);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    z-index: 2;
    overflow: hidden;
    cursor: default;
    transition: background 0.15s;
}
.day-event:hover {
    background: rgba(74, 158, 255, 0.25);
}
.day-event.recurring {
    background: var(--recurring-dim);
    border-left-color: var(--recurring);
}
.day-event.recurring:hover {
    background: rgba(180, 122, 255, 0.25);
}
.day-event-time {
    font-size: 0.7rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 2px;
}
.day-event.recurring .day-event-time {
    color: var(--recurring);
}
.day-event-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.day-event-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Jetzt-Linie */
.day-now-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--danger);
    z-index: 3;
}
.day-now-line::before {
    content: '';
    position: absolute;
    left: -4px;
    top: -3px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--danger);
}

/* Delete Button (klein, für Tag-Events) */
.event-delete-sm {
    position: absolute;
    top: 4px;
    right: 6px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
}
.day-event:hover .event-delete-sm,
.day-allday-event:hover .event-delete-sm {
    opacity: 1;
}
.event-delete-sm:hover {
    color: var(--danger);
}

/* Empty State */
#empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
#empty-state p { margin-bottom: 8px; }
#empty-state .hint { font-size: 0.85rem; opacity: 0.6; }

/* Loading */
#loading {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 100;
    backdrop-filter: blur(4px);
}
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.hidden { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 500px) {
    #app { padding: 0 10px; }
    #header h1 { font-size: 1.2rem; }
    .month-day { min-height: 60px; }
    .month-event { font-size: 0.6rem; }
    .week-grid { min-width: 500px; }
}

@supports (padding-top: env(safe-area-inset-top)) {
    #header { padding-top: calc(20px + env(safe-area-inset-top)); }
}