/**
 * 註冊頁面樣式 - 6 步驟精靈 (Premium Design)
 * Registration Wizard Styles - Premium Edition
 */

/* ========================================
   CSS 變數 - 設計系統
   ======================================== */
:root {
    --wizard-primary: #6366f1;
    --wizard-primary-light: #818cf8;
    --wizard-primary-dark: #4f46e5;
    --wizard-secondary: #8b5cf6;
    --wizard-accent: #06b6d4;
    --wizard-success: #10b981;
    --wizard-warning: #f59e0b;
    --wizard-danger: #ef4444;
    --wizard-bg: #f8fafc;
    --wizard-card-bg: #ffffff;
    --wizard-text: #1e293b;
    --wizard-text-muted: #64748b;
    --wizard-border: #e2e8f0;
    --wizard-input-bg: #f1f5f9;
    --wizard-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --wizard-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --wizard-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --wizard-shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
    --wizard-radius-sm: 8px;
    --wizard-radius-md: 12px;
    --wizard-radius-lg: 16px;
    --wizard-radius-xl: 24px;
    --wizard-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   基礎容器
   ======================================== */
.register-wrapper {
    min-height: 100vh;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
    padding: 2rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.register-card {
    background: #ffffff;
    border-radius: var(--wizard-radius-xl);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08), 0 0 1px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-width: 920px;
    width: 100%;
    margin: 0 auto;
    border: 1px solid #e2e8f0;
}

.register-content {
    padding: 2.5rem 3rem 3rem;
}

.register-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.register-header h2 {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.register-header p {
    font-size: 1.35rem;
    color: var(--wizard-text-muted);
    font-weight: 400;
}

/* ========================================
   步驟進度指示器
   ======================================== */
.wizard-steps {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem 2rem 2.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
    border-radius: var(--wizard-radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.08);
}

.wizard-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.wizard-step:not(:last-child)::after {
    content: '';
    width: 36px;
    height: 2px;
    background: var(--wizard-border);
    position: absolute;
    top: 21px;
    left: calc(50% + 25px);
    transition: var(--wizard-transition);
    border-radius: 1px;
}

.wizard-step:not(:last-child) {
    margin-right: 44px;
}

.wizard-step:not(:last-child).completed::after {
    background: linear-gradient(90deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
}

.step-indicator {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--wizard-input-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--wizard-text-muted);
    transition: var(--wizard-transition);
    position: relative;
    z-index: 1;
    border: 2px solid transparent;
    flex-shrink: 0;
}

.wizard-step.active .step-indicator {
    background: linear-gradient(135deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    transform: scale(1.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.wizard-step.completed .step-indicator {
    background: linear-gradient(135deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
    color: white;
}

.wizard-step.completed .step-indicator::after {
    content: '✓';
    position: absolute;
    font-size: 1.2rem;
    font-weight: 700;
}

.wizard-step.completed .step-indicator span {
    display: none;
}

.step-label {
    margin-top: 0.6rem;
    font-size: 1.1rem;
    color: var(--wizard-text-muted);
    white-space: nowrap;
    transition: var(--wizard-transition);
    font-weight: 500;
    text-align: center;
}

.wizard-step.active .step-label,
.wizard-step.completed .step-label {
    color: var(--wizard-primary);
    font-weight: 600;
}

/* ========================================
   步驟內容區
   ======================================== */
.wizard-content {
    min-height: 420px;
    margin-top: 3rem;
}

.step-panel {
    display: none;
    animation: slideIn 0.4s ease;
}

.step-panel.active {
    display: block;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 步驟標題區 */
.step-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.step-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--wizard-text);
    margin-bottom: 0.75rem;
    text-align: center;
}

.step-title .step-icon {
    display: none;
}

.step-description {
    font-size: 1.35rem;
    color: var(--wizard-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ========================================
   表單欄位 - 高級設計
   ======================================== */
.form-group-modern {
    margin-bottom: 1.5rem;
    position: relative;
    text-align: left;
}

.form-group-modern label {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--wizard-text);
    margin-bottom: 0.6rem;
    gap: 0.4rem;
}

.form-group-modern label .required {
    color: var(--wizard-danger);
    font-weight: 700;
}

.form-group-modern label .label-icon {
    display: none;
    /* 隱藏圖標確保標籤靠左對齊 */
}

.form-group-modern input,
.form-group-modern select {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1.5rem;
    border: 2px solid var(--wizard-border);
    border-radius: var(--wizard-radius-md);
    background: var(--wizard-card-bg);
    transition: var(--wizard-transition);
    color: var(--wizard-text);
    font-weight: 500;
}

.form-group-modern input:hover,
.form-group-modern select:hover {
    border-color: #cbd5e1;
    background: #fafbfc;
}

.form-group-modern input:focus,
.form-group-modern select:focus {
    outline: none;
    border-color: var(--wizard-primary);
    background: var(--wizard-card-bg);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1), var(--wizard-shadow-sm);
}

.form-group-modern input::placeholder {
    color: #94a3b8;
    font-weight: 400;
}

.form-group-modern .form-hint {
    font-size: 1.2rem;
    color: var(--wizard-text-muted);
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.form-group-modern .form-error {
    font-size: 1.2rem;
    color: var(--wizard-danger);
    margin-top: 0.5rem;
    display: none;
    font-weight: 500;
}

.form-group-modern.has-error input,
.form-group-modern.has-error select {
    border-color: var(--wizard-danger);
    background: #fef2f2;
}

.form-group-modern.has-error .form-error {
    display: block;
}

/* ========================================
   性別選擇按鈕 - 精緻設計
   ======================================== */
.gender-options {
    display: flex;
    gap: 1rem;
}

.gender-option {
    flex: 1;
    padding: 1.25rem 1rem;
    border: 2px solid var(--wizard-border);
    border-radius: var(--wizard-radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--wizard-transition);
    background: var(--wizard-card-bg);
    position: relative;
    overflow: hidden;
}

.gender-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    opacity: 0;
    transition: var(--wizard-transition);
}

.gender-option:hover {
    border-color: var(--wizard-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--wizard-shadow-md);
}

.gender-option:hover::before {
    opacity: 1;
}

.gender-option.selected {
    border-color: var(--wizard-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.gender-option.selected::before {
    opacity: 1;
}

.gender-option i {
    font-size: 28px;
    margin-bottom: 0.6rem;
    display: block;
    position: relative;
}

.gender-option span {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--wizard-text);
    position: relative;
}

/* ========================================
   頭像選擇 - 優化設計
   ======================================== */
.avatar-preview-card {
    border-radius: var(--wizard-radius-lg);
    overflow: hidden;
    box-shadow: var(--wizard-shadow-md);
    margin-bottom: 1.5rem;
    position: relative;
    border: 3px solid transparent;
    background: linear-gradient(var(--wizard-card-bg), var(--wizard-card-bg)) padding-box,
        linear-gradient(135deg, var(--wizard-primary), var(--wizard-secondary)) border-box;
}

.avatar-preview-wrapper {
    width: 100%;
    padding-top: 100%;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
}

.avatar-preview-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.avatar-preview-card:hover .avatar-preview-wrapper img {
    transform: scale(1.05);
}

.avatar-preview-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    text-align: center;
    padding: 1.5rem 0.5rem 0.75rem;
    font-size: 1.2rem;
    font-weight: 500;
}

.avatar-thumbnails {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding: 0.75rem 0;
    scrollbar-width: thin;
}

.avatar-thumbnails::-webkit-scrollbar {
    height: 6px;
}

.avatar-thumbnails::-webkit-scrollbar-track {
    background: var(--wizard-input-bg);
    border-radius: 3px;
}

.avatar-thumbnails::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, var(--wizard-primary), var(--wizard-secondary));
    border-radius: 3px;
}

.avatar-thumb {
    width: 64px;
    height: 64px;
    flex: 0 0 auto;
    border-radius: var(--wizard-radius-md);
    object-fit: cover;
    cursor: pointer;
    border: 3px solid transparent;
    transition: var(--wizard-transition);
    box-shadow: var(--wizard-shadow-sm);
}

.avatar-thumb:hover {
    transform: scale(1.1) translateY(-3px);
    box-shadow: var(--wizard-shadow-md);
}

.avatar-thumb.selected {
    border-color: var(--wizard-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2), var(--wizard-shadow-md);
    transform: scale(1.05);
}

/* ========================================
   電子郵件驗證區 - 精緻卡片
   ======================================== */
.email-section {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
    border-radius: var(--wizard-radius-lg);
    padding: 1.75rem;
    margin-top: 1.5rem;
    border: 1px solid rgba(99, 102, 241, 0.1);
    position: relative;
    overflow: hidden;
}

.email-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--wizard-primary), var(--wizard-secondary), var(--wizard-accent));
}

.email-section-header {
    display: flex;
    align-items: center;
    justify-content: center;
    /* 置中對齊 */
    gap: 0.6rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--wizard-text);
    margin-bottom: 1.25rem;
}

.email-section-header .section-icon {
    display: none;
    /* 隱藏圖標確保標題與下方欄位對齊 */
}

.email-warning {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    /* 靠左對齊 */
    gap: 0.75rem;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    border-radius: var(--wizard-radius-sm);
    border-left: 3px solid var(--wizard-warning);
    /* 邊框在左側 */
    color: #92400e;
    text-align: left;
}

.email-warning i {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--wizard-warning);
}

.email-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: stretch;
}

.email-input-group input {
    flex: 1;
}

.btn-send-code {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0 1.5rem;
    font-size: 1.35rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
    border: none;
    border-radius: var(--wizard-radius-md);
    cursor: pointer;
    transition: var(--wizard-transition);
    white-space: nowrap;
    min-height: 52px;
}

.btn-send-code:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-send-code:active:not(:disabled) {
    transform: translateY(0);
}

.btn-send-code:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-send-code i {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-send-code span {
    display: flex;
    align-items: center;
}

/* 驗證碼輸入區 */
.verification-code-section {
    margin-top: 1.75rem;
    padding-top: 1.75rem;
    border-top: 1px dashed rgba(99, 102, 241, 0.2);
}

.verification-status {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-radius: var(--wizard-radius-md);
    margin-bottom: 1.25rem;
}

.verification-status-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.verification-status-icon.pending {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #b45309;
}

.verification-status-icon i {
    width: 22px;
    height: 22px;
}

.verification-status-text {
    flex: 1;
    font-size: 1.3rem;
    color: var(--wizard-text);
    line-height: 1.5;
}

.countdown-text {
    color: var(--wizard-primary);
    font-weight: 700;
}

.verify-code-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: stretch;
}

.verify-code-input {
    flex: 1;
    font-size: 2rem !important;
    letter-spacing: 0.6em;
    text-align: center;
    font-weight: 700;
    text-transform: uppercase;
}

.btn-verify-code {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0 1.75rem;
    font-size: 1.4rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--wizard-success) 0%, #059669 100%);
    border: none;
    border-radius: var(--wizard-radius-md);
    cursor: pointer;
    transition: var(--wizard-transition);
    min-height: 52px;
}

.btn-verify-code:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-verify-code i {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-verify-code span {
    display: flex;
    align-items: center;
}

.resend-section {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 1.25rem;
    color: var(--wizard-text-muted);
}

.btn-resend {
    background: none;
    border: none;
    color: var(--wizard-primary);
    font-weight: 600;
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.3rem 0.6rem;
    border-radius: var(--wizard-radius-sm);
    transition: var(--wizard-transition);
}

.btn-resend:hover:not(:disabled) {
    background: rgba(99, 102, 241, 0.1);
}

.btn-resend:disabled {
    color: #94a3b8;
    cursor: not-allowed;
}

/* 驗證成功 */
.email-verified-section {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(5, 150, 105, 0.05) 100%);
    border-radius: var(--wizard-radius-md);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.verified-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.75rem;
    background: linear-gradient(135deg, var(--wizard-success) 0%, #059669 100%);
    color: white;
    border-radius: 50px;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.85rem;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.verified-badge i {
    width: 20px;
    height: 20px;
}

.verified-email {
    font-size: 1.4rem;
    color: var(--wizard-text);
    font-weight: 600;
}

/* ========================================
   身分認證區
   ======================================== */
.security-notice {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.04) 0%, rgba(139, 92, 246, 0.04) 100%);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: var(--wizard-radius-lg);
    margin-top: 1.5rem;
}

.security-notice-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
    border-radius: var(--wizard-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.security-notice-icon i {
    width: 24px;
    height: 24px;
    color: white;
}

.security-notice-content {
    flex: 1;
}

.security-notice-content strong {
    display: block;
    font-size: 1.4rem;
    color: var(--wizard-text);
    margin-bottom: 0.6rem;
}

.security-notice-content ul {
    margin: 0;
    padding-left: 1.25rem;
    font-size: 1.25rem;
    color: var(--wizard-text-muted);
    line-height: 1.7;
}

.security-notice-content li {
    margin-bottom: 0.3rem;
}

/* ========================================
   確認預覽區 - 高級卡片
   ======================================== */
.confirm-preview {
    background: var(--wizard-card-bg);
    border: 2px solid var(--wizard-border);
    border-radius: var(--wizard-radius-lg);
    overflow: hidden;
    box-shadow: var(--wizard-shadow-md);
}

.preview-section {
    padding: 1.5rem 1.75rem;
    border-bottom: 1px solid var(--wizard-border);
}

.preview-section:last-child {
    border-bottom: none;
}

.preview-avatar-section {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.06) 100%);
}

.preview-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1rem;
    border: 4px solid white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.preview-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-name {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--wizard-text);
}

.preview-section-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--wizard-primary);
    margin-bottom: 1.25rem;
}

.preview-section-title i {
    width: 20px;
    height: 20px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.preview-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.preview-item-full {
    grid-column: 1 / -1;
}

.preview-label {
    font-size: 1.15rem;
    color: var(--wizard-text-muted);
    font-weight: 500;
}

.preview-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--wizard-text);
}

.preview-email {
    color: var(--wizard-primary);
    word-break: break-all;
}

.final-notice {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    margin-top: 1.75rem;
    font-size: 1.3rem;
    padding: 1.25rem;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
    border-radius: var(--wizard-radius-md);
    border-left: 3px solid var(--wizard-accent);
    color: #0e7490;
}

.final-notice i {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--wizard-accent);
}

.edit-hint {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 1.2rem;
    color: #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.edit-hint i {
    width: 16px;
    height: 16px;
}

/* ========================================
   導航按鈕 - 高級設計
   ======================================== */
.wizard-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 2.5rem;
    gap: 1rem;
    padding-top: 2rem;
    border-top: 1px solid var(--wizard-border);
}

.btn-wizard {
    padding: 1rem 2.25rem;
    font-size: 1.5rem;
    font-weight: 600;
    border-radius: var(--wizard-radius-md);
    cursor: pointer;
    transition: var(--wizard-transition);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    min-width: 150px;
    justify-content: center;
}

.btn-wizard-prev {
    background: var(--wizard-card-bg);
    border: 2px solid var(--wizard-border);
    color: var(--wizard-text-muted);
}

.btn-wizard-prev:hover {
    border-color: var(--wizard-primary);
    color: var(--wizard-primary);
    background: rgba(99, 102, 241, 0.05);
}

.btn-wizard-next,
.btn-wizard-submit {
    background: linear-gradient(135deg, var(--wizard-primary) 0%, var(--wizard-secondary) 100%);
    border: none;
    color: white;
    margin-left: auto;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-wizard-next:hover,
.btn-wizard-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-wizard-next:active,
.btn-wizard-submit:active {
    transform: translateY(-1px);
}

.btn-wizard:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ========================================
   訊息提示
   ======================================== */
.register-alert {
    border-radius: var(--wizard-radius-md);
    margin-bottom: 1.25rem;
    padding: 1rem 1.5rem;
    font-size: 1.35rem;
    font-weight: 500;
}

/* ========================================
   底部連結
   ======================================== */
.register-footer {
    margin-top: 2rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--wizard-border);
    text-align: center;
}

.register-footer p {
    font-size: 1.35rem;
    color: var(--wizard-text-muted);
}

.register-footer a {
    color: var(--wizard-primary);
    font-weight: 700;
    text-decoration: none;
    transition: var(--wizard-transition);
}

.register-footer a:hover {
    color: var(--wizard-primary-dark);
    text-decoration: underline;
}

/* ========================================
   RWD 響應式
   ======================================== */
@media (max-width: 768px) {
    .register-content {
        padding: 1.5rem 1.25rem 2rem;
    }

    .wizard-steps {
        flex-wrap: nowrap;
        padding: 1rem 0.5rem 1.8rem;
        overflow-x: auto;
    }

    .wizard-step:not(:last-child) {
        margin-right: 24px;
    }

    .wizard-step:not(:last-child)::after {
        width: 16px;
        left: calc(50% + 18px);
    }

    .step-indicator {
        width: 32px;
        height: 32px;
        font-size: 1.1rem;
    }

    .wizard-step.active .step-indicator {
        transform: scale(1.1);
    }

    .step-label {
        font-size: 0.85rem;
        margin-top: 0.4rem;
    }

    .wizard-navigation {
        flex-direction: column;
    }

    .btn-wizard {
        width: 100%;
    }

    .btn-wizard-next,
    .btn-wizard-submit {
        margin-left: 0;
        order: -1;
    }

    .email-input-group,
    .verify-code-input-group {
        flex-direction: column;
    }

    .btn-send-code,
    .btn-verify-code {
        width: 100%;
        min-height: 48px;
        justify-content: center;
        /* 確保內容置中 */
        text-align: center;
    }

    .btn-send-code i,
    .btn-verify-code i {
        display: none;
        /* 手機板隱藏按鈕圖標 */
    }

    .preview-grid {
        grid-template-columns: 1fr;
    }

    .gender-options {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .register-header h2 {
        font-size: 1.65rem;
    }

    .step-title {
        font-size: 1.5rem;
    }

    .form-group-modern input,
    .form-group-modern select {
        font-size: 1.4rem;
        padding: 0.85rem 1rem;
    }

    /* 手機板重要提醒樣式優化 */
    .email-warning {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        padding: 1rem;
        font-size: 1.15rem;
    }

    .email-warning i {
        display: none;
        /* 隱藏圖標讓版面更簡潔 */
    }

    .email-warning strong {
        display: block;
        width: 100%;
        font-size: 1.2rem;
        margin-bottom: 0.25rem;
        padding-bottom: 0.5rem;
        border-bottom: 1px dashed rgba(245, 158, 11, 0.3);
    }
}