/* ===== Google Calendar 風 ダークテーマ ===== */
:root {
    --bg: #202124;
    --surface: #2d2e30;
    --surface-2: #35363a;
    --border: #3c4043;
    --text: #e8eaed;
    --text-dim: #9aa0a6;
    --accent: #8ab4f8;
    --accent-strong: #aecbfa;
    --saturday: #8ab4f8;
    --sunday: #f28b82;
    --today-bg: #1f3b66;
    --summary-bg: #2a2f3a;
    --warn: #fdd663;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Roboto", "Yu Gothic UI", "Meiryo", "Segoe UI", sans-serif;
    font-size: 13px;
}

body { padding: 16px 24px 32px 24px; }

h1 {
    font-size: 22px;
    font-weight: 400;
    margin: 0 0 16px 0;
    color: var(--text);
    letter-spacing: 0.2px;
}

/* ----- 設定パネル ----- */
.settings {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 16px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 14px;
}
.settings label { color: var(--text-dim); font-size: 12px; }

/* ----- 入力 ----- */
input[type=text], input[type=date], textarea {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 8px;
    font-family: inherit;
    font-size: 13px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
input[type=text]:focus, input[type=date]:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(138, 180, 248, 0.25);
}
textarea { width: 100%; resize: vertical; }
input.minutes { width: 64px; }

/* ----- ボタン (Material 風) ----- */
input[type=submit], button, .btn {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 6px 14px;
    font-family: inherit;
    font-size: 13px;
    cursor: pointer;
    transition: background .15s, border-color .15s;
}
input[type=submit]:hover, button:hover, .btn:hover {
    background: rgba(138, 180, 248, 0.10);
    border-color: var(--accent);
}
input[type=submit].primary, .btn.primary {
    background: var(--accent);
    color: #202124;
    border-color: var(--accent);
    font-weight: 500;
}
input[type=submit].primary:hover, .btn.primary:hover {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
}

/* ----- ナビゲーション + ビュー切替 ----- */
.toolbar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}
.toolbar .range {
    font-size: 18px;
    font-weight: 400;
    margin: 0 12px;
    color: var(--text);
}
.toolbar .nav-arrow {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 50%;
    line-height: 1;
}
.view-switch { margin-left: auto; display: inline-flex; border: 1px solid var(--border); border-radius: 18px; overflow: hidden; }
.view-switch input[type=submit] {
    border: none;
    border-radius: 0;
    padding: 6px 16px;
    background: transparent;
    color: var(--text-dim);
}
.view-switch input[type=submit]:hover { background: rgba(255,255,255,0.05); }
.view-switch input[type=submit].active {
    background: rgba(138, 180, 248, 0.20);
    color: var(--accent);
    font-weight: 500;
}

/* ----- 週ビュー ----- */
table.week {
    border-collapse: collapse;
    width: 100%;
    table-layout: fixed;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}
table.week th, table.week td {
    border: 1px solid var(--border);
    vertical-align: top;
    padding: 8px;
    width: 12.5%;
}
table.week th {
    background: var(--surface-2);
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 10px 8px;
}
.day-header {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 2px;
}
.day-header.today {
    display: inline-block;
    background: var(--accent);
    color: #202124;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    line-height: 28px;
    text-align: center;
    font-weight: 500;
}
.countdown { color: var(--warn); font-size: 11px; margin: 2px 0 6px 0; line-height: 1.4; }
.field-label { display: block; font-size: 10px; color: var(--text-dim); margin-top: 6px; letter-spacing: 0.4px; text-transform: uppercase; }
.summary-col { background: var(--summary-bg); }
.saturday { color: var(--saturday); }
.sunday { color: var(--sunday); }

/* ----- 月ビュー ----- */
.month-grid {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}
.month-grid .row-head, .month-grid .row {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}
.month-grid .row-head > div {
    background: var(--surface-2);
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 500;
    text-align: center;
    padding: 10px 0;
    border-right: 1px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}
.month-grid .row-head > div:last-child { border-right: none; }
.month-grid .cell {
    border-top: 1px solid var(--border);
    border-right: 1px solid var(--border);
    min-height: 96px;
    padding: 6px;
    font-size: 12px;
}
.month-grid .row .cell:last-child { border-right: none; }
.month-grid .cell.other-month { color: var(--text-dim); background: rgba(255,255,255,0.02); }
.month-grid .cell .num { font-size: 12px; font-weight: 500; }
.month-grid .cell .num.today {
    display: inline-block; background: var(--accent); color: #202124;
    border-radius: 50%; width: 22px; height: 22px; line-height: 22px;
    text-align: center; font-weight: 500;
}
.month-grid .cell .ev {
    display: block;
    background: rgba(138, 180, 248, 0.18);
    color: var(--accent-strong);
    border-radius: 4px;
    padding: 2px 6px;
    margin-top: 3px;
    font-size: 11px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.month-grid .cell .mins { font-size: 11px; color: var(--text-dim); margin-top: 3px; }
.month-grid .cell .cd { font-size: 10px; color: var(--warn); margin-top: 2px; }

/* ----- 年ビュー ----- */
.year-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.mini-month {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
}
.mini-month h3 { margin: 0 0 8px 0; font-size: 14px; font-weight: 500; color: var(--accent); }
.mini-month table { width: 100%; border-collapse: collapse; font-size: 11px; }
.mini-month th, .mini-month td { text-align: center; padding: 4px 0; color: var(--text); }
.mini-month th { color: var(--text-dim); font-weight: 400; font-size: 10px; }
.mini-month td.other { color: var(--text-dim); opacity: 0.4; }
.mini-month td.today span {
    display: inline-block; background: var(--accent); color: #202124;
    border-radius: 50%; width: 20px; height: 20px; line-height: 20px;
}
.mini-month td.exam span {
    display: inline-block; background: var(--sunday); color: #202124;
    border-radius: 50%; width: 20px; height: 20px; line-height: 20px;
}

/* ----- フッター ----- */
.footer-actions { margin-top: 14px; display: flex; align-items: center; gap: 12px; }
.status { color: var(--accent); font-size: 12px; }

@media (max-width: 1100px) {
    .year-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 800px) {
    .year-grid { grid-template-columns: repeat(2, 1fr); }
}