/* 50 Sounds Practice - Feature Modules */

/* ===========================================
   Practice Module
   =========================================== */
.kana {
    font-size: 72px;
    margin: 20px;
    color: var(--text-primary);
    text-shadow: 2px 2px 4px var(--shadow-color);
}

.kana-char {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.kana-large {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.romaji {
    font-size: 14px;
    color: var(--text-secondary);
    font-family: monospace;
}

.result {
    font-size: 18px;
    margin-top: 20px;
    font-weight: 500;
    color: var(--text-primary);
}

.quiz-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-top: 30px;
}

.mode-select {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.mode-select label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text-primary);
}

.mode-select label:hover {
    background: var(--border-color);
}

/* Practice Mode Selection */
.practice-mode-select {
    margin: 20px 0;
    text-align: center;
    min-height: 120px;
}

.practice-mode-select h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
}

.mode-options {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin: 15px 0;
    flex-wrap: wrap;
    min-height: 90px;
}

.mode-option {
    display: flex;
    align-items: center;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 200px;
    background: var(--bg-secondary);
    position: relative;
}

.mode-option:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.mode-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.mode-option input[type="radio"]:checked + .mode-icon {
    transform: scale(1.1);
}

.mode-option input[type="radio"]:checked ~ .mode-info .mode-name {
    color: var(--accent-primary);
    font-weight: bold;
}

.mode-option:has(input[type="radio"]:checked) {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.mode-icon {
    font-size: 24px;
    margin-right: 12px;
    transition: transform 0.3s ease;
}

.mode-info {
    display: flex;
    flex-direction: column;
    text-align: left;
    flex: 1;
}

.mode-name {
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 4px;
    transition: color 0.3s ease;
}

.mode-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.3;
}

.mode-config {
    margin: 15px 0;
    padding: 15px;
    border-radius: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.mode-config.hidden {
    display: none;
}

#quick-mode-options {
    min-height: 200px;
}

#quick-question-count {
    min-width: 120px;
}

.config-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
    flex-wrap: wrap;
}

.config-group label {
    font-weight: 500;
    color: var(--text-primary);
    min-width: 60px;
}

.config-group select,
.config-group input[type="number"] {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.config-group select:focus,
.config-group input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--shadow-hover);
}

/* Quick Practice Range Selection */
.quick-range-option {
    transition: all 0.3s ease;
}

.quick-range-option:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary) !important;
}

.quick-range-option:has(input[type="checkbox"]:checked) {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary) !important;
    font-weight: 500;
}

/* Custom Practice Mode */
.quick-selection {
    margin-bottom: 20px;
    text-align: center;
}

.quick-selection h5 {
    margin: 0 0 10px 0;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.quick-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.quick-btn {
    padding: 6px 12px;
    border: 1px solid var(--accent-primary);
    background: var(--bg-secondary);
    color: var(--accent-primary);
    border-radius: 20px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.quick-btn.clear-btn {
    border-color: #dc3545;
    color: #dc3545;
}

.quick-btn.clear-btn:hover {
    background: #dc3545;
    color: white;
}

.row-selection h5 {
    margin: 0 0 15px 0;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.category-section {
    margin-bottom: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.category-header {
    background: var(--bg-tertiary);
    padding: 10px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.category-emoji {
    font-size: 16px;
}

.category-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.row-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1px;
    background: var(--border-color);
    padding: 0;
}

.row-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 8px;
    position: relative;
}

.row-item:hover {
    background: var(--bg-tertiary);
}

.row-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--accent-primary);
}

.row-item input[type="checkbox"]:checked ~ .row-name {
    color: var(--accent-primary);
    font-weight: 600;
}

.row-item input[type="checkbox"]:checked ~ .row-preview {
    color: var(--accent-primary);
}

.row-name {
    font-weight: 500;
    color: var(--text-primary);
    min-width: 40px;
}

.row-preview {
    font-family: "Yu Gothic", "Hiragino Sans", sans-serif;
    color: var(--text-secondary);
    font-size: 13px;
    flex: 1;
    letter-spacing: 2px;
}

.row-count {
    font-size: 11px;
    color: var(--text-light);
    font-weight: 400;
}

.selection-summary {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.summary-info {
    text-align: center;
    margin-bottom: 15px;
}

.summary-info span {
    font-weight: 600;
    color: var(--accent-primary);
    font-size: 16px;
}

.practice-options {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    align-items: center;
}

.practice-options > label {
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

.practice-amount {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
}

.practice-amount:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.practice-amount input[type="radio"] {
    margin: 0;
    accent-color: var(--accent-primary);
}

.practice-amount input[type="radio"]:checked ~ span {
    color: var(--accent-primary);
    font-weight: 600;
}

.practice-amount:has(input[type="radio"]:checked) {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

/* Checkbox Grid */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.checkbox-group {
    background: var(--bg-tertiary);
    padding: 15px;
    border-radius: 10px;
    border: 2px solid transparent;
    transition: all 0.3s;
}

.checkbox-group:hover {
    border-color: var(--accent-primary);
}

.checkbox-group h4 {
    margin: 0 0 10px 0;
    color: var(--accent-primary);
    font-size: 16px;
}

.checkbox-group label {
    display: block;
    margin: 8px 0;
    text-align: left;
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: background 0.2s;
}

.checkbox-group label:hover {
    background: var(--bg-tertiary);
}

.concept-info-box {
    background: var(--bg-tertiary) !important;
    border: 2px solid var(--accent-primary) !important;
}

.concept-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 5px 0;
    text-align: left;
}

/* ===========================================
   Chart Module
   =========================================== */
.chart-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow-color);
}

.chart-table th, .chart-table td {
    padding: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.chart-table th {
    background: var(--accent-primary);
    color: white;
    font-weight: 600;
}

.chart-table td {
    font-size: 18px;
    transition: background 0.2s;
    background: var(--bg-secondary);
}

.chart-table td:hover {
    background: var(--bg-tertiary);
}

/* ===========================================
   Statistics Module
   =========================================== */
.stats-empty-message {
    text-align: center;
    color: var(--text-secondary);
}

.stats-detail-link {
    color: var(--accent-primary);
}

.stats-loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.stats-error-text {
    margin-bottom: 15px;
    font-size: 16px;
}

.stats-error-auth {
    color: #f39c12;
}

.stats-error-network {
    color: #e74c3c;
}

.session-detail-header {
    background: var(--bg-tertiary);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.session-detail-title {
    margin: 0 0 10px 0;
    color: var(--text-primary);
}

.record-meta {
    color: var(--text-secondary);
}

/* ===========================================
   Authentication Module
   =========================================== */
.auth-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 30px;
    background: var(--bg-secondary);
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.auth-tabs {
    display: flex;
    margin-bottom: 20px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 4px;
}

.auth-tab {
    flex: 1;
    padding: 8px 12px;
    text-align: center;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
    font-size: 14px;
}

.auth-tab.active {
    background: var(--accent-primary);
    color: white;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
    box-sizing: border-box;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.auth-button {
    width: 100%;
    padding: 12px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.auth-button:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px);
}

.auth-button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.error-message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
}

.success-message {
    color: #27ae60;
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
}

.oauth-divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.oauth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.oauth-divider span {
    background: var(--bg-secondary);
    padding: 0 15px;
    color: var(--text-secondary);
    font-size: 14px;
}

.google-login-btn {
    width: 100%;
    padding: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.google-login-btn:hover {
    box-shadow: 0 1px 3px var(--shadow-hover);
    background: var(--bg-tertiary);
}

.google-login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px 15px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 20px;
    min-height: 80px;
    transition: all 0.2s ease;
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    text-align: left;
}

.user-name {
    font-weight: 500;
    margin: 0;
}

.user-email {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

.logout-btn {
    padding: 6px 12px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.3s;
}

.logout-btn:hover {
    background: #c0392b;
}

.auth-btn {
    padding: 8px 16px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
    font-weight: 500;
    min-width: 100px;
    min-height: 44px;
}

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

.password-input-container {
    position: relative;
    display: inline-block;
    width: 100%;
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-secondary);
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    color: var(--text-primary);
}

.password-requirements {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px;
    margin-top: 5px;
    font-size: 12px;
}

.password-requirement {
    display: flex;
    align-items: center;
    margin: 4px 0;
    color: var(--text-secondary);
}

.password-requirement .icon {
    margin-right: 6px;
    width: 16px;
    text-align: center;
}

.requirement-met {
    color: #27ae60;
}

.requirement-not-met {
    color: #e74c3c;
}

/* ===========================================
   Guest CTA Module
   =========================================== */
.guest-info {
    min-height: 180px;
    transition: all 0.3s ease;
}

/* 迷你模式 - 當用戶點擊「以訪客身份繼續」後 */
.guest-info.minimized .guest-cta-content,
.guest-info.minimized .guest-cta-footer {
    display: none;
}

.guest-info.minimized .guest-cta-box {
    background: transparent;
    border: none;
    padding: 0;
    margin-bottom: 10px;
}

.guest-info.minimized .guest-cta-button {
    padding: 8px 16px;
    font-size: 13px;
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color);
    opacity: 0.8;
}

.guest-info.minimized .guest-cta-button:hover {
    opacity: 1;
    background: var(--accent-primary) !important;
    color: white !important;
}

.guest-cta-box {
    background: var(--bg-tertiary);
    padding: 10px 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.guest-cta-icon {
    display: none; /* 隱藏圖標以獲得更好的對齊 */
}

.guest-cta-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    width: 100%;
}

.guest-cta-title {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    text-align: center;
}

.guest-cta-subtitle {
    display: none; /* 隱藏副標題節省空間 */
}

.guest-features-box {
    display: none;
}

.guest-cta-button {
    background: var(--accent-primary) !important;
    color: white !important;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 500;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    margin: 0;
    white-space: nowrap;
    flex-shrink: 0;
    align-self: center;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.guest-cta-button .button-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
    display: inline-block;
    flex-shrink: 0;
}

.guest-cta-button:hover {
    transform: translateY(-1px);
    background: var(--accent-secondary) !important;
    box-shadow: 0 2px 8px var(--shadow-hover);
}

.guest-cta-footer {
    width: 100%;
    text-align: center;
    margin: 6px 0 0 0;
    font-size: 11px;
    color: var(--text-secondary);
    padding-top: 6px;
    border-top: 1px solid var(--border-color);
    min-height: 40px;
}

.guest-continue-link {
    color: var(--accent-primary);
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.2s;
}

.guest-continue-link:hover {
    color: var(--accent-secondary);
}

/* ===========================================
   About Module
   =========================================== */
.about-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.about-hero {
    text-align: center;
    margin-bottom: 40px;
}

.about-hero h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-hero p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-section {
    margin-bottom: 40px;
    padding: 25px;
    border-radius: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.about-section h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-section ul {
    font-size: 15px;
    line-height: 2;
    list-style: none;
    padding-left: 0;
    color: var(--text-secondary);
}

.about-section ul.indented {
    padding-left: 25px;
}

.about-section ul li {
    margin-bottom: 10px;
}

.about-section ol {
    font-size: 15px;
    line-height: 2;
    padding-left: 20px;
    color: var(--text-secondary);
}

.about-section ol li {
    margin-bottom: 10px;
}

.about-section p {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.about-section .footer-note {
    font-size: 14px;
    margin-top: 20px;
    color: var(--text-light);
    font-style: italic;
}

.about-section-highlight {
    background: var(--bg-tertiary);
    border: 2px solid var(--accent-primary);
}

.about-cta {
    padding: 25px;
    text-align: center;
    border-radius: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.about-cta p {
    margin: 0;
}

.about-cta-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.about-cta-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===========================================
   Date Input (Safari Optimization)
   =========================================== */
.safari-date-hint {
    display: block;
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 5px;
    line-height: 1.4;
}

input[type="date"]::-webkit-calendar-picker-indicator {
    opacity: 0.6;
}

input[type="date"]:focus::-webkit-calendar-picker-indicator {
    opacity: 1;
}

input[type="date"] {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.3s;
    width: 100%;
    box-sizing: border-box;
    -webkit-appearance: textfield;
    -moz-appearance: textfield;
}

input[type="date"]:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--shadow-hover);
}

input[type="date"]:hover {
    border-color: var(--text-secondary);
}

.safari-date-picker select {
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.safari-date-picker select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--shadow-hover);
}

.safari-date-picker select:hover {
    border-color: var(--text-secondary);
}

@supports (-webkit-touch-callout: none) {
    input[type="date"] {
        -webkit-appearance: none;
        padding-right: 40px;
        background-image: url("data:image/svg+xml;charset=UTF-8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><rect x='3' y='4' width='18' height='18' rx='2' ry='2'></rect><line x1='16' y1='2' x2='16' y2='6'></line><line x1='8' y1='2' x2='8' y2='6'></line><line x1='3' y1='10' x2='21' y2='10'></line></svg>");
        background-repeat: no-repeat;
        background-position: right 12px center;
        background-size: 20px;
    }
}

/* Fixed heights for author info */
#main-author,
#auth-author {
    min-height: 20px;
}

/* ===========================================
   Feedback / Bug Report Module
   =========================================== */
.feedback-container {
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
}

.feedback-container h2 {
    color: var(--text-primary);
    font-size: 28px;
    margin-bottom: 10px;
    text-align: center;
}

.feedback-description {
    color: var(--text-secondary);
    font-size: 14px;
    text-align: center;
    margin-bottom: 30px;
    line-height: 1.6;
}

.feedback-form {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.feedback-form .form-group {
    margin-bottom: 24px;
}

.feedback-form label {
    display: block;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feedback-form label .required {
    color: #ef4444;
    margin-left: 2px;
}

.feedback-form input[type="email"],
.feedback-form select,
.feedback-form textarea {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s;
    box-sizing: border-box;
    font-family: inherit;
}

.feedback-form input[type="email"]:focus,
.feedback-form select:focus,
.feedback-form textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(74, 105, 133, 0.1);
}

.feedback-form textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

/* 隱藏原生的 file input */
.file-input-hidden {
    display: none;
}

/* 自定義文件上傳容器 */
.custom-file-upload {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    transition: all 0.2s;
}

.custom-file-upload:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.file-upload-btn {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: white;
    background: var(--accent-primary);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.file-upload-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px);
}

.file-name {
    font-size: 14px;
    color: var(--text-secondary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 6px;
    margin-bottom: 0;
}

.form-actions {
    margin-top: 30px;
    text-align: center;
}

.submit-btn {
    background: var(--accent-primary) !important;
    color: white !important;
    padding: 14px 40px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 200px;
}

.submit-btn:hover {
    background: var(--accent-secondary) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

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

.submit-btn:disabled {
    background: var(--border-color) !important;
    cursor: not-allowed;
    transform: none;
}

.feedback-status {
    margin-top: 20px;
    padding: 14px;
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    display: none;
}

.feedback-status.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.feedback-status.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

.feedback-status.loading {
    display: block;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* Dark theme adjustments */
[data-theme="dark"] .feedback-form {
    background: var(--bg-primary);
}

[data-theme="dark"] .feedback-status.success {
    background: #064e3b;
    color: #6ee7b7;
}

[data-theme="dark"] .feedback-status.error {
    background: #7f1d1d;
    color: #fca5a5;
}