/* =========================================================
   基本変数
========================================================= */
:root {
    --color-background: #f0f2f5;
    --color-primary: #1976d2;
    --color-primary-dark: #155ab4;
    --color-warning: #ff9800;
    --color-warning-dark: #e68900;
    --color-danger: #f44336;
    --color-danger-dark: #d32f2f;
    --color-success: #4caf50;
    --color-success-dark: #45a049;
    --color-white: #ffffff;
    --color-black: #333333;
    --color-light-black: #555555;
    --color-gray: #cccccc;
    --color-light-gray: #f8f9fa;
    --color-orange: #ffa500;
    --color-backdrop: rgba(0, 0, 0, 0.5);
    --radius-xs: 2px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.2);
    --modal-max-width: 960px;
    --modal-padding: 24px;
    --modal-scroll-max-height: 480px;
}

/* =========================================================
   リセット & 基本設定
========================================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background-color: var(--color-background);
    color: var(--color-black);
    font-family: sans-serif;
}

.w-520 {
    width: 520px;
}

/* =========================================================
   コンテナ
========================================================= */
.main-container {
    max-width: 1200px;
    margin: 32px auto;
    padding: 0 20px;
}

.small-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px 20px 0;
}

/* =========================================================
   カード
========================================================= */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

    .card + .card {
        margin-top: 24px;
    }

.card--pad-lg {
    padding: 32px;
}

.card--pad-md {
    padding: 20px;
}

/* =========================================================
   見出し・テキスト
========================================================= */
.heading-primary {
    margin: 8px 0;
    font-size: 1.5em;
    color: var(--color-primary);
}

.text-muted {
    color: var(--color-light-black);
}

.code {
    border-radius: var(--radius-xs);
    padding: 2px 4px;
    background-color: var(--color-light-black);
    color: var(--color-white);
    font-family: monospace;
}

.notice-box {
    padding: 16px;
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    font-size: 0.95em;
    color: var(--color-light-black);
    line-height: 1.7;
}

/* =========================================================
   フォーム
========================================================= */
label {
    display: block;
    margin-bottom: 8px;
    text-align: left;
    font-weight: bold;
}

input[type="text"],
input[type="password"],
select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-gray);
    border-radius: 6px;
    font-size: 1em;
}

input + label,
input + .checkbox-container {
    margin-top: 16px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
    text-align: left;
}

    .checkbox-container input[type="checkbox"] {
        width: auto;
        margin-right: 8px;
        margin-bottom: 0;
    }

        .checkbox-container input[type="checkbox"] + label {
            margin-top: 0;
            margin-bottom: 0;
            font-size: 0.9em;
            font-weight: normal;
            color: var(--color-light-black);
        }

/* =========================================================
   ボタン（共通）
========================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 0.9em;
    cursor: pointer;
    text-decoration: none;
    transition: 0.2s;
}

.btn--block {
    width: 100%;
}

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

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

.btn--outline-primary {
    background-color: var(--color-white);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.btn--warning {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: var(--color-white);
}

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

.btn--danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: var(--color-white);
}

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

.btn--success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: var(--color-white);
}

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

/* =========================================================
   画像
========================================================= */
.text-icon {
    vertical-align: middle;
    margin: 0 0.2em 0.2em;
    width: 1em;
    height: 1em;
}

.capture {
    display: block;
    margin: 16px auto;
    max-width: 100%;
    border: 1px solid var(--color-gray);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.zoomable-image {
    cursor: zoom-in;
}

.img-dialog {
    width: min(92vw, 960px);
    border: none;
    outline: none;
    border-radius: var(--radius-md);
    padding: 12px;
    box-shadow: var(--shadow-lg);
}

    .img-dialog::backdrop {
        background: rgba(0, 0, 0, 0.6);
    }

.img-dialog-img {
    width: 100%;
    height: auto;
    max-height: 86vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

/* =========================================================
   ヘッダー
========================================================= */
.header {
    padding: 16px 32px;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-light-gray);
    box-shadow: var(--shadow-md);
}

    .header .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 0 auto;
    }

    .header .system-title a {
        font-size: 1.4em;
        font-weight: bold;
        color: var(--color-primary);
        text-decoration: none;
    }

    .header .system-title a:hover {
        text-decoration: underline;
    }

    .header .header-buttons {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }

/* =========================================================
   フッター
========================================================= */
.footer {
    margin-top: 20px;
    padding: 20px 0;
    text-align: center;
    font-size: 0.9em;
    color: var(--color-light-black);
}

/* =========================================================
   モーダル（共通）
========================================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--color-backdrop);
    z-index: 1000;
}

    .modal-overlay .modal {
        width: 90%;
        max-width: var(--modal-max-width);
        padding: var(--modal-padding);
        background-color: var(--color-white);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }

        .modal-overlay .modal h2 {
            margin-top: 0;
            margin-bottom: 20px;
            font-size: 1.5em;
        }

    .modal-overlay .scrollable-area {
        max-height: var(--modal-scroll-max-height);
        padding: 1em;
        border: 1px solid var(--color-gray);
        overflow-y: scroll;
    }

    .modal-overlay .modal-close-btn {
        margin-top: 20px;
    }

/* =========================================================
   ローディング画面
========================================================= */
.loader {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--color-light-black);
    opacity: 0.5;
    z-index: 1000;
}

    .loader .loading-box {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 16px;
        width: 100%;
        height: 100%;
    }

    .loader .item {
        display: inline-block;
        width: 24px;
        height: 24px;
        background-color: var(--color-white);
        border-radius: 50%;
        animation: kf-bounce 1.2s infinite ease-in-out;
    }

        .loader .item:nth-child(1) {
            animation-delay: 0s;
        }

        .loader .item:nth-child(2) {
            animation-delay: 0.2s;
        }

        .loader .item:nth-child(3) {
            animation-delay: 0.4s;
        }

    .loader .text {
        margin-top: 16px;
        font-size: 24px;
        font-weight: bold;
        color: var(--color-white);
    }

/* =========================================================
   レスポンシブ
========================================================= */
@media (max-width: 1024px) {
    .header {
        padding: 8px 8px;
        box-shadow: none;
        border-bottom: 1px solid var(--color-gray);
    }

        .header .header-content {
            flex-direction: column;
            gap: 16px;
            align-items: stretch;
        }

        .header .system-title {
            text-align: center;
        }

        .header .system-title a {
            font-size: 1.2em;
        }

        .header .header-buttons {
            justify-content: center;
            gap: 8px;
            font-size: 12px;
        }

    .card {
        width: 100%;
        max-width: 100%;
        padding: 8px;
        box-shadow: none;
    }
}

@media (max-width: 480px) {
    body {
        background-color: var(--color-white);
    }

    .main-container {
        margin: 16px auto;
        padding: 0 16px;
    }

    .notice-box {
        padding: 12px;
        font-size: 0.9em;
    }

    .btn--block,
    .btn-responsive-full {
        width: 100%;
    }
}

/* =========================================================
    アニメーション
========================================================= */
@keyframes kf-bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}