* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Georgia, 'Times New Roman', serif;
    background: #FFFFFF;
    color: #000000;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 2px solid #000000;
    flex-wrap: wrap;
    gap: 8px;
}

.month-title {
    font-size: 20px;
    letter-spacing: 2px;
    font-weight: bold;
}

.nav-btn {
    color: #000000;
    text-decoration: none;
    border: 1px solid #000000;
    padding: 6px 12px;
    font-size: 14px;
    white-space: nowrap;
}
.nav-btn:hover { background: #000000; color: #FFFFFF; }

.layout {
    display: flex;
    gap: 24px;
    padding: 24px;
    align-items: flex-start;
    flex-wrap: wrap;
}

table.calendar {
    border-collapse: collapse;
    table-layout: fixed;
    width: 560px;
    max-width: 100%;
}
table.calendar th {
    border: 1px solid #000000;
    padding: 8px;
    font-weight: normal;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
table.calendar td {
    border: 1px solid #000000;
    padding: 0;
    width: 80px;
    height: 60px;
}

.day-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    text-decoration: none;
    color: inherit;
    font-size: 15px;
}
.day-cell.today { font-weight: bold; text-decoration: underline; }
.day-cell.selected { outline: 3px solid #000000; outline-offset: -3px; }

.info-panel {
    border: 1px solid #000000;
    min-width: 280px;
    padding: 16px;
}
.info-panel h2 {
    margin-top: 0;
    font-size: 16px;
    border-bottom: 1px solid #000000;
    padding-bottom: 8px;
}
.activity-row {
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid #DDDDDD;
}
.activity-time {
    border: 1px solid #000000;
    padding: 2px 6px;
    font-size: 12px;
    min-width: 90px;
    text-align: center;
}
.activity-name { font-size: 14px; }
.empty { color: #666666; font-style: italic; }

footer {
    text-align: center;
    padding: 12px;
    font-size: 12px;
    color: #666666;
    border-top: 1px solid #000000;
}

/* --- Admin --- */
.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 2px solid #000000;
    flex-wrap: wrap;
    gap: 8px;
}
.btn {
    border: 1px solid #000000;
    padding: 6px 12px;
    text-decoration: none;
    color: #000000;
    font-size: 13px;
}
.btn:hover { background: #000000; color: #FFFFFF; }
.btn-danger:hover { background: #CC0000; border-color: #CC0000; }

table.admin-list { width: 100%; border-collapse: collapse; }
table.admin-list th, table.admin-list td {
    border: 1px solid #000000;
    padding: 8px;
    font-size: 14px;
    text-align: left;
}
main { padding: 24px; }

.login-box { max-width: 320px; margin: 80px auto; border: 1px solid #000; padding: 24px; }
.login-box input {
    width: 100%; padding: 8px; margin-bottom: 12px;
    border: 1px solid #000; font-family: inherit;
}
.login-box button {
    width: 100%; padding: 10px; background: #000; color: #fff;
    border: none; cursor: pointer; font-family: inherit;
}
.login-error { color: #CC0000; margin-bottom: 12px; }

form.event-form { max-width: 480px; padding: 24px; }
form.event-form label { display: block; margin-top: 12px; font-size: 13px; }
form.event-form input[type=text],
form.event-form input[type=date],
form.event-form select {
    width: 100%; padding: 8px; border: 1px solid #000;
    font-family: inherit; margin-top: 4px;
}
.weekday-check { display: inline-block; margin-right: 12px; font-size: 13px; font-weight: normal; }
.error { color: #CC0000; }
form.event-form button {
    margin-top: 20px; padding: 10px 20px; background: #000; color: #fff;
    border: none; cursor: pointer; font-family: inherit;
}