/**
 * HC Login Pro - 버튼 스타일 (Joyn 통합)
 * 
 * File: buttons.css
 * Version: 3.2.0
 * 
 * - 버튼 높이: 52px (모바일 48px)
 * - 현대적인 그림자 효과
 * - Joyn 디자인 시스템 통합
 */

/* ========================================
   기본 버튼 스타일
   ======================================== */
.hc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--hc-space-2);
    height: var(--hc-btn-height);
    padding: 0 var(--hc-space-6);
    font-family: var(--hc-font-sans);
    font-size: var(--hc-text-base);
    font-weight: var(--hc-font-semibold);
    line-height: 1;
    border: 2px solid transparent;
    border-radius: var(--hc-radius-lg);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    transition: all var(--hc-transition);
    -webkit-appearance: none;
    appearance: none;
}

.hc-btn:focus-visible {
    outline: none;
    box-shadow: var(--hc-focus-ring);
}

/* ========================================
   Primary 버튼
   ======================================== */
.hc-btn-primary {
    background: var(--hc-primary);
    color: var(--hc-text-inverse);
    border-color: var(--hc-primary);
}

.hc-btn-primary:hover {
    background: var(--hc-primary-hover);
    border-color: var(--hc-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(158, 124, 36, 0.28);
}

.hc-btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(158, 124, 36, 0.2);
}

/* ========================================
   Secondary 버튼
   ======================================== */
.hc-btn-secondary {
    background: var(--hc-bg-tertiary);
    color: var(--hc-text-primary);
    border-color: var(--hc-border);
}

.hc-btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--hc-border-dark);
}

/* ========================================
   Outline 버튼
   ======================================== */
.hc-btn-outline {
    background: transparent;
    color: var(--hc-primary);
    border-color: var(--hc-primary);
}

.hc-btn-outline:hover {
    background: var(--brand-glow);
    border-color: var(--hc-primary);
    color: var(--hc-primary);
}

/* ========================================
   Ghost 버튼 (텍스트만)
   ======================================== */
.hc-btn-ghost,
.hc-btn-text {
    background: transparent;
    color: var(--hc-text-secondary);
    border-color: transparent;
    padding: 0 var(--hc-space-4);
}

.hc-btn-ghost:hover,
.hc-btn-text:hover {
    color: var(--hc-primary);
    background: var(--brand-glow);
}

/* ========================================
   상태별 버튼
   ======================================== */
.hc-btn-success {
    background: var(--hc-success);
    color: var(--hc-text-inverse);
    border-color: var(--hc-success);
}

.hc-btn-success:hover {
    background: #059669;
    border-color: #059669;
}

.hc-btn-warning {
    background: var(--hc-warning);
    color: var(--hc-text-inverse);
    border-color: var(--hc-warning);
}

.hc-btn-warning:hover {
    background: #d97706;
    border-color: #d97706;
}

.hc-btn-error,
.hc-btn-danger {
    background: var(--hc-error);
    color: var(--hc-text-inverse);
    border-color: var(--hc-error);
}

.hc-btn-error:hover,
.hc-btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
}

.hc-btn-info {
    background: var(--hc-info);
    color: var(--hc-text-inverse);
    border-color: var(--hc-info);
}

.hc-btn-info:hover {
    background: #2563eb;
    border-color: #2563eb;
}

/* ========================================
   버튼 크기
   ======================================== */
.hc-btn-sm {
    height: var(--hc-btn-height-sm);
    padding: 0 var(--hc-space-4);
    font-size: var(--hc-text-sm);
    border-radius: var(--hc-radius-md);
}

.hc-btn-lg {
    height: var(--hc-btn-height-lg);
    padding: 0 var(--hc-space-8);
    font-size: var(--hc-text-lg);
}

.hc-btn-full {
    width: 100%;
}

/* ========================================
   비활성 상태
   ======================================== */
.hc-btn:disabled,
.hc-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    transform: none !important;
    box-shadow: none !important;
}

/* ========================================
   로딩 상태
   ======================================== */
.hc-btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.hc-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: hc-btn-spin 0.6s linear infinite;
}

.hc-btn-primary.loading::after {
    border-color: rgba(255, 255, 255, 0.3);
    border-right-color: transparent;
}

@keyframes hc-btn-spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   아이콘 버튼
   ======================================== */
.hc-btn-icon {
    width: var(--hc-btn-height);
    padding: 0;
}

.hc-btn-icon.hc-btn-sm {
    width: var(--hc-btn-height-sm);
}

.hc-btn-icon.hc-btn-lg {
    width: var(--hc-btn-height-lg);
}

.hc-btn i,
.hc-btn svg {
    font-size: 1.25em;
    flex-shrink: 0;
}

/* ========================================
   소셜 로그인 섹션
   ======================================== */
.hc-social-login {
    margin-top: var(--hc-space-8);
    padding-top: var(--hc-space-6);
    border-top: 1px solid var(--hc-border);
}

.hc-social-divider {
    text-align: center;
    margin-bottom: var(--hc-space-5);
    position: relative;
}

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

.hc-social-divider span {
    position: relative;
    background: var(--bg-card);
    padding: 0 var(--hc-space-4);
    color: var(--hc-text-muted);
    font-size: var(--hc-text-sm);
    font-weight: var(--hc-font-medium);
}

.hc-social-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--hc-space-3);
}

/* ========================================
   소셜 버튼 기본 스타일
   ======================================== */
.hc-btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--hc-space-3);
    height: var(--hc-btn-height);
    padding: 0 var(--hc-space-5);
    font-family: var(--hc-font-sans);
    font-size: var(--hc-text-base);
    font-weight: var(--hc-font-medium);
    border: 2px solid var(--hc-border);
    border-radius: var(--hc-radius-lg);
    background: var(--hc-bg-primary);
    color: var(--hc-text-primary);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--hc-transition);
}

.hc-btn-social:hover {
    border-color: var(--hc-border-dark);
    background: var(--hc-bg-secondary);
    transform: translateY(-1px);
    box-shadow: var(--hc-shadow-md);
}

.hc-btn-social svg,
.hc-btn-social img {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ========================================
   Google 버튼
   ======================================== */
.hc-btn-google {
    border-color: #dadce0;
}

.hc-btn-google:hover {
    background: #f8f9fa;
    border-color: #c4c7c5;
}

/* ========================================
   카카오 버튼
   ======================================== */
.hc-btn-kakao {
    background: #FEE500;
    border-color: #FEE500;
    color: #000000;
}

.hc-btn-kakao:hover {
    background: #FDD835;
    border-color: #FDD835;
    color: #000000;
}

.hc-btn-kakao svg {
    fill: #3C1E1E;
}

/* ========================================
   네이버 버튼
   ======================================== */
.hc-btn-naver {
    background: #03C75A;
    border-color: #03C75A;
    color: #ffffff;
}

.hc-btn-naver:hover {
    background: #02B350;
    border-color: #02B350;
    color: #ffffff;
}

.hc-btn-naver svg {
    fill: #ffffff;
}

/* ========================================
   애플 버튼 - 모든 템플릿에서 일관된 스타일
   ======================================== */
.hc-btn-apple,
[class*="apple-login"],
[class*="Apple"],
button[data-provider="apple"],
.hc-social-btn-apple {
    background: #000000 !important;
    border-color: #000000 !important;
    color: #ffffff !important;
}

.hc-btn-apple:hover,
[class*="apple-login"]:hover,
[class*="Apple"]:hover,
button[data-provider="apple"]:hover,
.hc-social-btn-apple:hover {
    background: #1a1a1a !important;
    border-color: #1a1a1a !important;
    color: #ffffff !important;
}

.hc-btn-apple svg,
[class*="apple-login"] svg,
[class*="Apple"] svg,
button[data-provider="apple"] svg,
.hc-social-btn-apple svg {
    fill: #ffffff !important;
}

/* 애플 버튼 이미지 아이콘 흰색 처리 */
.hc-btn-apple img,
[class*="apple-login"] img,
[class*="Apple"] img,
button[data-provider="apple"] img,
.hc-social-btn-apple img {
    filter: brightness(0) invert(1) !important;
}

/* 애플 버튼 내 아이콘/텍스트 색상 보장 */
.hc-btn-apple *,
[class*="apple-login"] *,
[class*="Apple"] *,
button[data-provider="apple"] *,
.hc-social-btn-apple * {
    color: #ffffff !important;
}

/* ========================================
   소셜 버튼 그리드 (태블릿 이상)
   ======================================== */
@media (min-width: 480px) {
    .hc-social-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .hc-social-buttons .hc-btn-social {
        flex: 1 1 calc(50% - var(--hc-space-2));
        min-width: 160px;
    }
}

/* ========================================
   모바일 반응형
   ======================================== */
@media (max-width: 640px) {
    .hc-btn {
        height: var(--hc-btn-height);
        font-size: 16px; /* iOS 줌 방지 */
    }
    
    .hc-social-buttons {
        flex-direction: column;
    }
    
    .hc-social-buttons .hc-btn-social {
        width: 100%;
    }
}