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

:root {
    --bg-app: #1e1e1e;
    --bg-pane: #252526;
    --bg-header: #333333;
    --text-primary: #d4d4d4;
    --text-secondary: #808080;
    --border: #3c3c3c;
    --accent: #0e639c;
    --accent-hover: #1177bb;
    --success: #4ec9b0;
    --warning: #dcdcaa;
    --error: #f14c4c;
}

body {
    font-family: 'Consolas', 'Monaco', monospace;
    background: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.header h1 {
    font-size: 1rem;
    font-weight: 500;
}

.header-controls {
    display: flex;
    gap: 0.5rem;
}

.btn-primary, .btn-secondary, .btn-small {
    padding: 0.4rem 0.8rem;
    border: none;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg-pane);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    background: var(--bg-app);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

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

.main-content {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* パスワード表示 */
.password-section {
    background: var(--bg-pane);
    border-radius: 6px;
    padding: 1.5rem;
}

.password-display {
    text-align: center;
}

.password-text {
    display: block;
    font-size: 1.4rem;
    font-family: 'Consolas', monospace;
    color: var(--success);
    word-break: break-all;
    padding: 0.5rem;
    background: var(--bg-app);
    border-radius: 4px;
    border: 1px solid var(--border);
    user-select: all;
}

.strength-bar {
    height: 4px;
    background: var(--bg-app);
    border-radius: 2px;
    margin-top: 1rem;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    width: 0;
    transition: all 0.3s;
    border-radius: 2px;
}

.strength-fill.weak { background: var(--error); width: 25%; }
.strength-fill.fair { background: var(--warning); width: 50%; }
.strength-fill.good { background: var(--accent); width: 75%; }
.strength-fill.strong { background: var(--success); width: 100%; }

.strength-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 0.5rem;
}

.strength-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.entropy-text {
    font-size: 0.8rem;
    color: var(--accent);
}

.crack-time-text {
    font-size: 0.8rem;
    color: var(--success);
}

/* 設定セクション */
.settings-section {
    background: var(--bg-pane);
    border-radius: 6px;
    padding: 1rem;
}

.setting-row {
    margin-bottom: 1rem;
}

.setting-row:last-child {
    margin-bottom: 0;
}

.setting-row > label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.setting-row input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--bg-app);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.setting-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.setting-row.checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
}

.count-control {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.count-btn {
    width: 28px;
    height: 28px;
    background: var(--bg-app);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.count-btn:hover {
    background: var(--border);
}

.count-control input {
    width: 60px;
    height: 28px;
    background: var(--bg-app);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    text-align: center;
    font-family: inherit;
    font-size: 0.85rem;
}

/* 一括生成結果 */
.bulk-section {
    background: var(--bg-pane);
    border-radius: 6px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-secondary);
    border-radius: 6px 6px 0 0;
}

.bulk-results {
    padding: 0.75rem;
    max-height: 200px;
    overflow-y: auto;
}

.bulk-results:empty::before {
    content: '生成結果がここに表示されます';
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.bulk-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0.5rem;
    background: var(--bg-app);
    border-radius: 4px;
    margin-bottom: 0.5rem;
    font-family: 'Consolas', monospace;
    font-size: 0.85rem;
}

.bulk-item:last-child {
    margin-bottom: 0;
}

.bulk-item .password {
    color: var(--success);
    word-break: break-all;
    flex: 1;
    user-select: all;
}

.bulk-item .copy-btn {
    padding: 0.2rem 0.4rem;
    font-size: 0.7rem;
    margin-left: 0.5rem;
    flex-shrink: 0;
}

/* モードセクション */
.mode-section {
    background: var(--bg-pane);
    border-radius: 6px;
    padding: 0.75rem;
}

.mode-tabs, .separator-tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--bg-app);
    padding: 0.25rem;
    border-radius: 4px;
}

.mode-tab, .sep-tab {
    padding: 0.5rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s;
}

.sep-tab {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.mode-tab:hover, .sep-tab:hover {
    color: var(--text-primary);
}

.mode-tab.active, .sep-tab.active {
    background: var(--accent);
    color: white;
}

.passphrase-info {
    margin-top: 0.75rem;
    padding: 0.5rem;
    background: var(--bg-app);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}

/* フッター */
.footer {
    padding: 0.5rem 1rem;
    background: var(--bg-header);
    border-top: 1px solid var(--border);
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* トースト */
.toast {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    background: var(--success);
    color: var(--bg-app);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.2s;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* レスポンシブ */
@media (max-width: 600px) {
    .setting-row.checkboxes {
        flex-direction: column;
        gap: 0.5rem;
    }

    .password-text {
        font-size: 1rem;
    }
}