/* ========================================
   2110 Lab Tools - 共通スタイル
   ダークテーマ（サイト統一デザイン）
======================================== */

/* CSS変数 */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.1);
    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #555570;
    --accent-1: #00d4ff;
    --accent-2: #a855f7;
    --accent-gradient: linear-gradient(135deg, #00d4ff, #a855f7);
    --border: rgba(255, 255, 255, 0.08);
    --glow-1: rgba(0, 212, 255, 0.15);
    --glow-2: rgba(168, 85, 247, 0.15);
}

/* リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ========================================
   ナビゲーション
======================================== */
.tool-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    height: 52px;
    padding: 0 24px;
    background: rgba(10, 10, 15, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    gap: 8px;
}

.tool-nav a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.tool-nav a:hover {
    color: var(--accent-1);
}

.tool-nav .separator {
    color: var(--text-muted);
}

.tool-nav .current {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========================================
   メインコンテナ
======================================== */
.container {
    max-width: 1100px;
    width: 92%;
    margin: 68px auto 40px;
    padding: 32px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    position: relative;
}

/* 旧ピン装飾を無効化 */
.container::before,
.container::after,
.pin-bl,
.pin-br {
    display: none;
}

/* ========================================
   見出し
======================================== */
h1 {
    font-family: 'Space Grotesk', 'Noto Sans JP', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 8px;
    text-shadow: none;
    letter-spacing: 1px;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 28px;
    font-style: normal;
}

/* ========================================
   セクション
======================================== */
.section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: none;
}

.section-title {
    font-family: 'Space Grotesk', 'Noto Sans JP', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

/* ========================================
   フォーム要素
======================================== */
.control-group {
    margin-bottom: 14px;
}

.control-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 3px var(--glow-1);
}

select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* ========================================
   ボタン
======================================== */
.btn {
    padding: 10px 22px;
    border-radius: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-block;
    text-decoration: none;
    text-align: center;
    text-shadow: none;
    box-shadow: none;
    border: none;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    border: none;
}

.btn-primary:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--glow-1);
}

.btn-reset {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-reset:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(168, 85, 247, 0.15);
    color: var(--accent-2);
    border: 1px solid rgba(168, 85, 247, 0.25);
}

.btn-secondary:hover {
    background: rgba(168, 85, 247, 0.25);
    transform: translateY(-1px);
}

.btn-download {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border: none;
}

.btn-download:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.25);
}

.button-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

.btn:disabled {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    border: 1px solid var(--border);
    opacity: 0.5;
}

/* ========================================
   ドロップゾーン
======================================== */
.drop-zone {
    border: 2px dashed rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    padding: 48px 28px;
    text-align: center;
    background: rgba(0, 212, 255, 0.03);
    cursor: pointer;
    transition: all 0.2s ease;
}

.drop-zone:hover,
.drop-zone.dragover {
    background: rgba(0, 212, 255, 0.06);
    border-color: var(--accent-1);
}

.drop-zone-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.drop-zone-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ========================================
   プログレスバー
======================================== */
.progress-container {
    margin-top: 20px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
    border: none;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 3px;
}

.progress-text {
    text-align: center;
    margin-top: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ========================================
   使い方ボックス
======================================== */
.info-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent-1);
    border-radius: 10px;
    padding: 20px 24px;
    margin-top: 24px;
}

.info-box h3 {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 0.95rem;
    font-weight: 700;
}

.info-box ul {
    list-style: none;
    padding: 0;
}

.info-box li {
    padding: 6px 0;
    padding-left: 22px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.info-box li::before {
    content: '>';
    position: absolute;
    left: 4px;
    color: var(--accent-1);
    font-family: monospace;
    font-weight: bold;
}

/* ========================================
   ステータス表示
======================================== */
.status {
    text-align: center;
    padding: 10px;
    border-radius: 8px;
    margin: 14px 0;
    font-weight: 600;
    font-size: 0.85rem;
}

.status.success {
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.status.processing {
    background: rgba(251, 191, 36, 0.1);
    color: #fbbf24;
    border: 1px solid rgba(251, 191, 36, 0.25);
}

/* ========================================
   ヒントテキスト
======================================== */
.hint-text {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 5px;
    font-style: normal;
}

/* ========================================
   コントロール行
======================================== */
.control-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 14px;
}

.control-row .input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-row input[type="number"] {
    width: 100px;
    padding: 8px 12px;
}

.control-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-1);
}

/* ========================================
   チェックボックスグループ
======================================== */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-1);
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
    color: var(--text-secondary);
}

/* ========================================
   バッジ
======================================== */
.feature-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 10px;
    margin-left: 6px;
    text-shadow: none;
    letter-spacing: 0.5px;
}

.feature-badge.speed {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

/* ========================================
   サブセクション
======================================== */
.subsection {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 14px;
}

.subsection-title {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ========================================
   グリッドレイアウト
======================================== */
.two-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
}

.three-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
}

.four-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 14px;
}

/* ========================================
   プレビューエリア
======================================== */
.preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    overflow: hidden;
    text-align: center;
    margin-bottom: 20px;
}

.preview-container img,
.preview-container video {
    max-width: 100%;
    max-height: 60vh;
    height: auto;
    display: block;
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* ========================================
   結果表示エリア
======================================== */
.result-area {
    text-align: center;
    padding: 20px;
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 10px;
}

.result-area img {
    max-width: 100%;
    max-height: 400px;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 8px;
}

.result-info {
    margin: 14px 0;
    color: #34d399;
    font-weight: 600;
    font-size: 0.85rem;
}

/* ========================================
   タブ切り替え
======================================== */
.tab-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(0, 212, 255, 0.2);
}

.tab-btn.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-1);
    border-color: rgba(0, 212, 255, 0.3);
    font-weight: 600;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ========================================
   スクロールバー
======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ========================================
   アニメーション
======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* ========================================
   フッター
======================================== */
.tool-footer {
    max-width: 1100px;
    width: 92%;
    margin: 0 auto 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 16px;
}

.tool-footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.tool-footer a:hover {
    color: var(--accent-1);
}

/* ========================================
   レスポンシブ
======================================== */
@media (max-width: 768px) {
    .container {
        width: 96%;
        padding: 20px 16px;
        margin-top: 58px;
    }

    h1 {
        font-size: 1.3rem;
    }

    .button-row {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .control-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .tool-nav {
        padding: 0 16px;
        height: 48px;
        font-size: 0.8rem;
    }
}