:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
}

header {
    background-color: #1e293b;
    color: white;
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}

header h1 {
    margin: 0;
    font-size: 1.875rem;
    font-weight: 700;
}

nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

nav button {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-color);
    background-color: white;
    color: var(--text-main);
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

nav button:hover {
    background-color: var(--bg-color);
    border-color: var(--text-muted);
}

nav button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.main-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 1fr;
    }
}

.calendar-section {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.search-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.search-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.search-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

input[type="text"] {
    flex: 1;
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    outline: none;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    ring: 2px solid var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

/* Calendar Styles */
.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

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

.calendar-day-head {
    background-color: var(--bg-color);
    padding: 0.75rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.calendar-cell {
    background-color: white;
    min-height: 100px;
    padding: 0.5rem;
    position: relative;
}

.calendar-cell:hover {
    background-color: #f1f5f9;
}

.calendar-cell.other-month {
    color: var(--text-muted);
    background-color: #f8fafc;
}

.day-number {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.event-tag {
    font-size: 0.75rem;
    padding: 2px 4px;
    background-color: #e0e7ff;
    color: #4338ca;
    border-radius: 4px;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
}

/* Result Item */
.result-item {
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.result-item:last-child {
    border-bottom: none;
}

.result-title {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.result-info {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}