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

:root {
    --bg: #fafafa;
    --card-bg: #fff;
    --text: #222;
    --text-muted: #666;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --border: #e5e5e5;
    --tag-bg: #f0f0f0;
    --date-color: #6b5b4f;
    --today-bg: #eff6ff;
    --success: #166534;
    --success-bg: #dcfce7;
    --warning: #92400e;
    --warning-bg: #fef3c7;
    --error: #991b1b;
    --error-bg: #fee2e2;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: #f5f3f0;
    background-image: url("topography.svg");
    background-size: 600px 600px;
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

header .subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

main {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 1rem;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.filter-group label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-group select {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--card-bg);
    font-size: 0.9rem;
    min-width: 120px;
}

/* View Toggle */
.view-toggle {
    display: flex;
    gap: 0.5rem;
}

.view-toggle button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--card-bg);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.15s;
}

.view-toggle button:hover {
    border-color: var(--accent);
}

.view-toggle button.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Events Container */
.events-container {
    min-height: 200px;
}

.events-container.hidden {
    display: none;
}

.loading, .no-events {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 1rem;
}

/* Event Cards */
.event-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 4px solid #888;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    transition: box-shadow 0.15s;
}

.event-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.event-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.25rem;
}

.event-date {
    font-size: 0.8rem;
    color: var(--date-color);
    font-weight: 600;
    text-transform: uppercase;
}

.add-to-cal {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: all 0.15s;
}

.add-to-cal:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.add-to-cal-text {
    display: inline;
}

.add-to-cal-wrapper {
    position: relative;
}

.calendar-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 100;
    min-width: 150px;
    overflow: hidden;
}

.calendar-menu.open {
    display: block;
}

.calendar-menu a,
.calendar-menu button {
    display: block;
    width: 100%;
    padding: 0.6rem 1rem;
    text-align: left;
    background: none;
    border: none;
    font-size: 0.85rem;
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
}

.calendar-menu a:hover,
.calendar-menu button:hover {
    background: var(--bg);
    color: var(--accent);
}

.calendar-menu a:not(:last-child),
.calendar-menu button:not(:last-child) {
    border-bottom: 1px solid var(--border);
}

@media (max-width: 600px) {
    .add-to-cal-text {
        display: none;
    }
    .add-to-cal {
        padding: 0.25rem;
    }
}

.event-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.event-title a {
    color: inherit;
    text-decoration: none;
}

.event-title a:hover {
    color: var(--accent);
}

.event-title a::after {
    content: " \2197";
    font-size: 0.8em;
    opacity: 0.5;
}

.event-title a:hover::after {
    opacity: 1;
}

.event-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.event-meta span::before {
    margin-right: 0.25rem;
}

.event-time::before { content: "\1F550"; }
.event-location::before { content: "\1F4CD"; }
.event-cost::before { content: "\1F4B5"; }

.event-location a {
    color: inherit;
    text-decoration: none;
}

.event-location a:hover {
    color: var(--accent);
}

.event-location a::after {
    content: " \2197";
    font-size: 0.8em;
    opacity: 0.5;
}

.event-location a:hover::after {
    opacity: 1;
}

.event-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    background: var(--tag-bg);
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tag.open-session { background: #dbeafe; color: #1e40af; }
.tag.instructed { background: #dcfce7; color: #166534; }
.tag.nude { background: #fef3c7; color: #92400e; }
.tag.costumed { background: #f3e8ff; color: #6b21a8; }

.registration-status {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    margin-left: auto;
}

.registration-status.available { background: var(--success-bg); color: var(--success); }
.registration-status.waitlist { background: var(--warning-bg); color: var(--warning); }
.registration-status.closed, .registration-status.sold-out { background: var(--error-bg); color: var(--error); }

/* Calendar View */
.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.calendar-nav button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--card-bg);
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.calendar-nav button:hover {
    border-color: var(--accent);
}

#cal-month {
    font-weight: 600;
    min-width: 150px;
    text-align: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.cal-header {
    background: var(--tag-bg);
    padding: 0.5rem;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border);
}

.cal-day {
    background: var(--card-bg);
    min-height: 80px;
    padding: 0.25rem;
}

.cal-day.other-month {
    background: var(--bg);
}

.cal-day.today {
    background: var(--today-bg);
}

.cal-day-num {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem;
}

.cal-day.other-month .cal-day-num {
    color: var(--text-muted);
}

.cal-event {
    font-size: 0.7rem;
    padding: 0.15rem 0.3rem;
    margin: 0.1rem;
    background: var(--accent);
    color: white;
    border-radius: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: opacity 0.15s;
}

.cal-event:hover {
    opacity: 0.85;
}

/* Subscribe Section */
.subscribe-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.subscribe-section h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.subscribe-section p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.subscribe-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
}

.subscribe-btn:hover {
    background: var(--accent-hover);
}

.subscribe-btn.secondary {
    background: var(--card-bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.subscribe-btn.secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--card-bg);
}

.subscribe-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.subscribe-hint {
    font-size: 0.8rem;
    margin-top: 0.75rem;
    min-height: 1.2em;
}

/* Footer */
footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border);
    padding: 1rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.sources {
    margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 600px) {
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .filters {
        flex-direction: column;
    }

    .filter-group select {
        width: 100%;
    }

    .view-toggle {
        width: 100%;
    }

    .view-toggle button {
        flex: 1;
    }

    .event-meta {
        flex-direction: column;
        gap: 0.25rem;
    }

    .cal-day {
        min-height: 60px;
    }

    .cal-header {
        font-size: 0.65rem;
    }
}