/* ========================================
   Register Page Styles
   Page Prefix: .register-
   ======================================== */

/* ========================================
   메인 레이아웃
   ======================================== */
.register-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: calc(100vh - var(--header-height));
}

/* ========================================
   왼쪽: 폼 영역
   ======================================== */
.register-form-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
    background: var(--bg-primary);
}

.register-form-wrapper {
    width: 100%;
    max-width: 420px;
}

.register-title {
    font-size: var(--font-size-hero);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.register-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xxl);
}

/* ========================================
   소셜 로그인
   ======================================== */
.register-social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.register-social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.register-social-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-color-light);
}

.register-social-btn__icon {
    width: 20px;
    height: 20px;
}

/* ========================================
   구분선
   ======================================== */
.register-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.register-divider::before,
.register-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.register-divider span {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    white-space: nowrap;
}

/* ========================================
   폼 스타일
   ======================================== */
.register-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.register-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.register-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.register-input-wrapper {
    position: relative;
}

.register-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    padding-right: 48px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    transition: all var(--transition-fast);
}

.register-input:hover {
    border-color: var(--border-color-light);
}

.register-input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.register-input::placeholder {
    color: var(--text-tertiary);
}

.register-input.error {
    border-color: var(--color-error);
}

.register-input-icon {
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    pointer-events: none;
}

/* ========================================
   비밀번호 토글
   ======================================== */
.register-password-toggle {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.register-password-toggle svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   비밀번호 강도 표시
   ======================================== */
.register-password-strength {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.register-password-strength__bar {
    flex: 1;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.register-password-strength__fill {
    height: 100%;
    width: 0;
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.register-password-strength__text {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    min-width: 80px;
    text-align: right;
}

/* ========================================
   비밀번호 요구사항
   ======================================== */
.register-password-requirements {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm) var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.register-password-requirements li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.register-password-requirements li svg {
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.register-password-requirements li.passed {
    color: var(--color-success);
}

.register-password-requirements li.passed svg {
    color: var(--color-success);
}

/* ========================================
   에러 메시지
   ======================================== */
.register-error {
    display: none;
    font-size: var(--font-size-xs);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

/* ========================================
   레퍼럴 코드
   ======================================== */
.register-form-group--referral {
    margin-top: var(--spacing-sm);
}

.register-referral-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.register-referral-toggle span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.register-referral-toggle__btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.register-referral-toggle__btn:hover {
    color: var(--color-primary-hover);
}

.register-referral-toggle__btn svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.register-referral-input {
    margin-top: var(--spacing-md);
    animation: registerSlideDown 0.3s ease;
}

@keyframes registerSlideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.register-referral-input .register-input {
    padding-right: var(--spacing-lg);
}

.register-referral-hint {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

/* ========================================
   약관 동의
   ======================================== */
.register-agreements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.register-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    position: relative;
}

.register-checkbox input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.register-checkbox__mark {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    border: 2px solid var(--border-color-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.register-checkbox__mark::after {
    content: '';
    width: 10px;
    height: 10px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%230b0e11' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.register-checkbox input:checked + .register-checkbox__mark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.register-checkbox input:checked + .register-checkbox__mark::after {
    opacity: 1;
}

.register-checkbox__text {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    flex: 1;
}

.register-checkbox__text--bold {
    font-weight: var(--font-weight-semibold);
}

.register-checkbox__required {
    color: var(--color-error);
    font-weight: var(--font-weight-medium);
}

.register-checkbox__optional {
    color: var(--text-tertiary);
}

.register-checkbox__link {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-decoration: underline;
}

.register-checkbox__link:hover {
    color: var(--color-primary);
}

.register-agreements__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding-left: var(--spacing-sm);
    border-left: 2px solid var(--border-color);
    margin-left: var(--spacing-sm);
}

/* ========================================
   제출 버튼
   ======================================== */
.register-submit {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--bg-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.register-submit:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

.register-submit:disabled {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    cursor: not-allowed;
}

.register-submit__loading {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.register-submit.loading .register-submit__text {
    visibility: hidden;
}

.register-submit.loading .register-submit__loading {
    display: block;
}

.register-submit .spinner {
    width: 24px;
    height: 24px;
    border-color: rgba(0, 0, 0, 0.2);
    border-top-color: var(--bg-primary);
}

/* ========================================
   로그인 링크
   ======================================== */
.register-login-link {
    text-align: center;
    margin-top: var(--spacing-xl);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.register-login-link a {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

.register-login-link a:hover {
    text-decoration: underline;
}

/* ========================================
   오른쪽: 프로모션 영역
   ======================================== */
.register-promo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    position: relative;
    overflow: hidden;
}

.register-promo-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
    opacity: 0.3;
}

.register-promo {
    position: relative;
    z-index: 1;
    max-width: 480px;
}

.register-promo__badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--bg-primary);
    margin-bottom: var(--spacing-lg);
}

.register-promo__title {
    font-size: 48px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.register-promo__desc {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xxl);
}

/* ========================================
   프로모션 기능 목록
   ======================================== */
.register-promo__features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}

.register-promo__features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.register-promo__feature-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.register-promo__feature-icon svg {
    width: 24px;
    height: 24px;
}

.register-promo__feature-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.register-promo__feature-text strong {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.register-promo__feature-text span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========================================
   프로모션 통계
   ======================================== */
.register-promo__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.register-promo__stat {
    text-align: center;
}

.register-promo__stat-value {
    display: block;
    font-size: var(--font-size-xxl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.register-promo__stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========================================
   반응형 - 태블릿
   ======================================== */
@media (max-width: 1024px) {
    .register-container {
        grid-template-columns: 1fr;
    }

    .register-promo-section {
        display: none;
    }

    .register-form-section {
        padding: var(--spacing-xl);
    }
}

/* ========================================
   반응형 - 모바일
   ======================================== */
@media (max-width: 768px) {
    .register-form-section {
        padding: var(--spacing-lg);
        align-items: flex-start;
        padding-top: var(--spacing-xl);
    }

    .register-form-wrapper {
        max-width: 100%;
    }

    .register-title {
        font-size: var(--font-size-xxl);
    }

    .register-subtitle {
        margin-bottom: var(--spacing-xl);
    }

    .register-social {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }

    .register-social-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .register-form {
        gap: var(--spacing-md);
    }

    .register-input {
        padding: var(--spacing-sm) var(--spacing-md);
        padding-right: 44px;
        font-size: var(--font-size-sm);
    }

    .register-password-requirements {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .register-agreements {
        padding: var(--spacing-md);
    }

    .register-checkbox__text {
        font-size: var(--font-size-xs);
    }

    .register-submit {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
}

/* ========================================
   포커스 스타일
   ======================================== */
.register-social-btn:focus-visible,
.register-input:focus-visible,
.register-submit:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.register-checkbox input:focus-visible + .register-checkbox__mark {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   애니메이션 감소
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    .register-referral-input {
        animation: none;
    }

    .register-password-strength__fill {
        transition: none;
    }
}