/* QRコード生成・読み取りツール - スタイル */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #0a0b10;
    color: #e0e0e8;
    min-height: 100vh;
}

#app {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

/* ヘッダー */
.tool-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.tool-title {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #a78bfa, #7c7ff2, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.tool-subtitle {
    color: #6b6f80;
    font-size: 0.85rem;
}

/* タブ */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    background: rgba(30, 32, 48, 0.6);
    border-radius: 12px;
    padding: 4px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.tab {
    flex: 1;
    background: transparent;
    border: none;
    border-radius: 9px;
    padding: 0.65rem 1rem;
    color: #6b6f80;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
}

.tab:hover {
    color: #a0a4b8;
}

.tab.active {
    background: linear-gradient(135deg, rgba(124, 127, 242, 0.25), rgba(99, 102, 241, 0.15));
    color: #e0e0e8;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 入力セクション */
.input-section {
    margin-bottom: 1rem;
}

.input-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: #8b8fa0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.qr-input {
    width: 100%;
    background: #12131a;
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    color: #e0e0e8;
    font-size: 0.95rem;
    font-family: inherit;
    resize: vertical;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    min-height: 70px;
}

.qr-input:focus {
    border-color: #7c7ff2;
    box-shadow: 0 0 0 3px rgba(124, 127, 242, 0.1);
}

.qr-input::placeholder {
    color: #3a3d4e;
}

.input-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 0.4rem;
    font-size: 0.72rem;
    color: #4a4d5e;
}

/* 設定パネル */
.settings-panel {
    background: rgba(30, 32, 48, 0.8);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.settings-row {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    align-items: flex-start;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
    min-width: 140px;
}

.setting-group label {
    font-size: 0.78rem;
    font-weight: 600;
    color: #8b8fa0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.setting-group select {
    background: #12131a;
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 8px;
    padding: 0.55rem 0.75rem;
    color: #e0e0e8;
    font-size: 0.82rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.setting-group select:focus {
    border-color: #7c7ff2;
    box-shadow: 0 0 0 3px rgba(124, 127, 242, 0.1);
}

/* カラーピッカー */
.color-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-input-wrap input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    width: 36px;
    height: 36px;
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-radius: 8px;
    cursor: pointer;
    background: none;
    padding: 2px;
}

.color-input-wrap input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input-wrap input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 5px;
}

.color-hex {
    font-size: 0.78rem;
    color: #6b6f80;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

/* プレビュー */
.preview-section {
    text-align: center;
    margin-bottom: 1.5rem;
}

.preview-area {
    background: rgba(30, 32, 48, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    position: relative;
}

#qr-canvas {
    display: none;
    border-radius: 8px;
    max-width: 100%;
    image-rendering: pixelated;
}

.preview-placeholder {
    color: #3a3d4e;
    text-align: center;
}

.placeholder-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.preview-placeholder p {
    font-size: 0.85rem;
}

.preview-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.25rem;
    flex-wrap: wrap;
}

/* ボタン */
.btn-primary {
    background: linear-gradient(135deg, #7c7ff2, #6366f1);
    border: none;
    border-radius: 10px;
    padding: 0.65rem 1.25rem;
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-svg {
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-svg:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 10px;
    padding: 0.65rem 1.25rem;
    color: #a78bfa;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(99, 102, 241, 0.15);
}

/* ドロップゾーン（読み取りタブ） */
.drop-zone {
    border: 2px dashed rgba(124, 127, 242, 0.3);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    background: rgba(30, 32, 48, 0.4);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: #7c7ff2;
    background: rgba(99, 102, 241, 0.08);
    box-shadow: 0 0 30px rgba(124, 127, 242, 0.1);
}

.drop-zone.drag-over {
    transform: scale(1.01);
}

.drop-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}

.drop-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: #a0a4b8;
    margin-bottom: 0.5rem;
}

.drop-sub {
    color: #6b6f80;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.file-label {
    color: #7c7ff2;
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.2s;
}

.file-label:hover {
    color: #a78bfa;
}

.drop-hint {
    color: #4a4d5e;
    font-size: 0.75rem;
}

/* 読み取りプレビュー */
.read-preview {
    margin: 1.5rem 0;
    text-align: center;
}

.read-image-wrap {
    background: rgba(30, 32, 48, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    display: inline-block;
}

.read-image-wrap img {
    max-width: 300px;
    max-height: 300px;
    border-radius: 8px;
}

/* 読み取り結果 */
.read-result {
    background: rgba(30, 32, 48, 0.8);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1rem 0;
}

.result-label {
    font-size: 1rem;
    font-weight: 700;
    color: #4ade80;
    margin-bottom: 0.75rem;
}

.result-content {
    background: #12131a;
    border-radius: 8px;
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
    color: #e0e0e8;
    word-break: break-all;
    margin-bottom: 0.75rem;
    line-height: 1.5;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.result-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn-link {
    background: linear-gradient(135deg, #34d399, #10b981);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-link:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

/* 読み取りエラー */
.read-error {
    background: rgba(30, 32, 48, 0.8);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1rem 0;
    text-align: center;
}

.error-label {
    font-size: 1rem;
    font-weight: 700;
    color: #f87171;
    margin-bottom: 0.5rem;
}

.error-text {
    color: #6b6f80;
    font-size: 0.85rem;
}

/* フッター */
.tool-footer {
    text-align: center;
    padding: 2rem 0 1rem;
    border-top: 1px solid rgba(99, 102, 241, 0.1);
    margin-top: 2rem;
}

.tool-footer p {
    color: #4a4d5e;
    font-size: 0.78rem;
    margin-bottom: 0.4rem;
}

.footer-link a {
    color: #7c7ff2;
    text-decoration: none;
}

.footer-link a:hover {
    color: #a78bfa;
}

/* 非表示ユーティリティ */
.hidden {
    display: none !important;
}

/* レスポンシブ */
@media (max-width: 640px) {
    .tool-title {
        font-size: 1.4rem;
    }

    .settings-row {
        flex-direction: column;
        gap: 1rem;
    }

    .setting-group {
        min-width: unset;
    }

    .drop-zone {
        padding: 2rem 1rem;
    }

    .drop-icon {
        font-size: 2.5rem;
    }

    .preview-area {
        padding: 1.25rem;
    }

    .preview-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .result-actions {
        flex-direction: column;
    }

    .read-image-wrap img {
        max-width: 100%;
    }
}