/* =========================
   共通
========================= */

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;

    min-height: 100vh;

    background: #f5f6f8;
    color: #333;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        "Hiragino Kaku Gothic ProN",
        "Hiragino Sans",
        Meiryo,
        sans-serif;

    line-height: 1.6;
}


/* =========================
   ログイン画面
========================= */

.login-page {
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    background: #f3f4f6;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: #ffffff;

    padding: 40px 32px;

    border-radius: 16px;

    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.08);
}

.app-title {
    margin: 0 0 8px;

    text-align: center;

    font-size: 28px;
    font-weight: 700;

    color: #222;
}

.login-title {
    margin: 0 0 32px;

    text-align: center;

    font-size: 20px;
    font-weight: 500;

    color: #666;
}

.error {
    margin-bottom: 20px;
    padding: 12px 14px;

    border-radius: 8px;

    background: #fff0f0;
    color: #d93025;

    font-size: 14px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;

    margin-bottom: 8px;

    font-size: 14px;
    font-weight: 600;

    color: #444;
}

.form-group input {
    width: 100%;

    padding: 14px;

    border: 1px solid #d1d5db;
    border-radius: 8px;

    font-size: 16px;

    outline: none;

    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}

.form-group input:focus {
    border-color: #2563eb;

    box-shadow:
        0 0 0 3px rgba(37, 99, 235, 0.12);
}


/* =========================
   勤怠画面
========================= */

header {
    background: #ffffff;

    padding:
        16px
        20px;

    border-bottom:
        1px solid #ddd;
}

header h1 {
    margin: 0 0 4px;

    font-size: 22px;
}

header p {
    margin: 4px 0;
}

main {
    width: 100%;

    max-width: 600px;

    margin: 0 auto;

    padding: 20px 16px 40px;
}

h1,
h2 {
    margin-top: 0;
}


/* リンク */

a {
    color: #2563eb;

    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}


/* ボタン */

button {
    width: 100%;

    min-height: 48px;

    padding: 10px 16px;

    margin-top: 8px;

    border: none;

    border-radius: 10px;

    background: #2563eb;

    color: white;

    font-size: 16px;

    cursor: pointer;
}

button:active {
    opacity: 0.8;
}


/* 入力欄 */

input,
select {
    width: 100%;

    min-height: 48px;

    padding: 10px 12px;

    margin-top: 6px;

    margin-bottom: 14px;

    border:
        1px solid #ccc;

    border-radius: 10px;

    background: white;

    font-size: 16px;
}


/* ラベル */

label {
    display: block;

    font-weight: bold;

    margin-top: 10px;
}


/* フォーム */

form {
    width: 100%;
}


/* 表 */

table {
    width: 100%;

    border-collapse: collapse;

    background: white;

    font-size: 14px;
}

th,
td {
    padding: 10px 6px;

    border:
        1px solid #ddd;

    text-align: center;
}

th {
    background: #f0f1f3;
}


/* 表の操作 */

td form {
    display: inline;
}

td form button {
    width: auto;

    min-height: auto;

    padding: 6px 10px;

    margin: 0;

    font-size: 14px;
}


/* 区切り線 */

hr {
    border: 0;

    border-top:
        1px solid #ddd;

    margin:
        20px 0;
}


/* メッセージ */

.message {
    padding: 12px;

    margin-bottom: 16px;

    background: #e8f5e9;

    border-radius: 10px;

    text-align: center;
}


/* =========================
   スマホ
========================= */

@media (max-width: 480px) {

    .login-container {
        padding: 16px;
    }

    .login-card {
        padding: 32px 24px;
    }

    .app-title {
        font-size: 25px;
    }

    main {
        padding:
            16px
            12px
            32px;
    }

    header {
        padding:
            14px
            16px;
    }

    header h1 {
        font-size: 20px;
    }

    table {
        font-size: 13px;
    }

    th,
    td {
        padding:
            8px
            4px;
    }
}

/* =========================
   ヘッダー
========================= */

.header-layout {
    display: flex;

    justify-content: space-between;
    align-items: flex-start;

    gap: 20px;
}

.header-info {
    flex: 1;
}


/* =========================
   小型カレンダー
========================= */

.mini-calendar {
    width: 210px;

    flex-shrink: 0;

    padding: 10px;

    background: #f8f9fa;

    border: 1px solid #ddd;
    border-radius: 10px;
}

.mini-calendar-title {
    margin-bottom: 6px;

    text-align: center;

    font-size: 14px;
    font-weight: bold;
}

.mini-calendar-weekdays,
.mini-calendar-days {
    display: grid;

    grid-template-columns:
        repeat(7, 1fr);

    text-align: center;
}

.mini-calendar-weekdays {
    margin-bottom: 3px;

    font-size: 10px;
    font-weight: bold;

    color: #666;
}

.mini-calendar-days {
    row-gap: 2px;

    font-size: 11px;
}

.mini-calendar-days span {
    display: flex;

    align-items: center;
    justify-content: center;

    width: 22px;
    height: 22px;

    margin: auto;

    border-radius: 50%;
}

.mini-calendar-days .today {
    background: #2563eb;

    color: #ffffff;

    font-weight: bold;
}

.mini-calendar-days .empty {
    visibility: hidden;
}


/* =========================
   スマホ
========================= */

@media (max-width: 480px) {

    .header-layout {
        gap: 10px;
    }

    .mini-calendar {
        width: 150px;

        padding: 7px;
    }

    .mini-calendar-title {
        font-size: 12px;
    }

    .mini-calendar-weekdays {
        font-size: 8px;
    }

    .mini-calendar-days {
        font-size: 9px;
    }

    .mini-calendar-days span {
        width: 16px;
        height: 16px;
    }

}

/* =========================
   月選択
========================= */

.month-input {
    width: auto;
    max-width: 100%;

    display: block;
}