/* ===========================================
   Firebase Setup Notice
   =========================================== */
.firebase-setup-notice {
    margin-bottom: var(--space-lg);
}

.notice-card {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), rgba(255, 152, 0, 0.05));
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.notice-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notice-content h3 {
    color: var(--color-warning);
    margin: 0 0 var(--space-xs) 0;
    font-size: 1rem;
    font-weight: 600;
}

.notice-content p {
    color: var(--color-text-muted-dark);
    margin: 0 0 var(--space-sm) 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

.btn-small {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.85rem;
    margin-top: 0;
    width: auto;
    display: inline-block;
}

/* ===========================================
   Buttons & Interactive Elements
   =========================================== */
.btn { 
    width: 100%; 
    background: linear-gradient(135deg, var(--color-gold), #e8b02a); 
    color: #1a1a1a; 
    font-weight: 600; 
    padding: var(--space-sm) var(--space-md); 
    border: 2px solid rgba(255, 255, 255, 0.3); 
    border-radius: var(--radius-lg); 
    cursor: pointer; 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    margin-top: var(--space-lg); 
    font-family: inherit; 
    font-size: 1rem; 
    box-shadow: 0 8px 24px rgba(245, 200, 66, 0.4);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    /* 모바일 터치 최적화 - 최소 48x44px 확보 */
    min-height: 48px;
    min-width: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn:hover:not(:disabled) { 
    transform: translateY(-2px); 
    box-shadow: 0 12px 32px rgba(245, 200, 66, 0.6);
}

.btn:disabled {
    background: rgba(255, 255, 255, 0.1) !important;
    color: var(--color-text-muted-dark) !important;
    cursor: not-allowed !important;
    opacity: 0.6;
    transform: none !important;
    box-shadow: none !important;
    border-color: var(--color-border-dark) !important;
}

.btn:disabled:hover {
    transform: none !important;
    box-shadow: none !important;
}

/* Primary 버튼 스타일 - 노란색 강조 */
.btn-primary {
    background: linear-gradient(135deg, var(--color-gold), #e8b02a) !important;
    color: #1a1a1a !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    box-shadow: 0 8px 24px rgba(245, 200, 66, 0.4) !important;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #e8b02a, var(--color-gold)) !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(245, 200, 66, 0.6) !important;
}

.btn-primary:disabled {
    background: rgba(255, 255, 255, 0.1) !important;
    color: var(--color-text-muted-dark) !important;
    cursor: not-allowed !important;
    opacity: 0.6;
    transform: none !important;
    box-shadow: none !important;
    border-color: var(--color-border-dark) !important;
}

/* ===========================================
   Navigation & Menu
   =========================================== */
nav { 
    position: fixed; 
    bottom: 0; 
    left: 0;
    right: 0;
    width: 100%; 
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255,255,255,0.1); 
    display: flex; 
    justify-content: space-around; 
    padding: 0.75rem; 
    z-index: 999; /* 네비게이션 z-index 최적화 */
}

.nav-item { 
    flex: 1; 
    color: var(--color-text-muted-dark); 
    background: rgba(255,255,255,0.05); 
    border: 1px solid rgba(255,255,255,0.1); 
    padding: 0.75rem; 
    text-align: center; 
    cursor: pointer; 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 0.25rem; 
    border-radius: 0.75rem;
    /* 모바일 터치 최적화 */
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

.nav-item:hover { 
    color: var(--color-text-dark); 
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.nav-item.active { 
    background: rgba(245, 200, 66, 0.2); 
    color: var(--color-gold); 
    border: 1px solid rgba(245, 200, 66, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(245, 200, 66, 0.3);
}

.nav-item svg { 
    width: 1.5rem; 
    height: 1.5rem; 
}

.nav-item span { 
    font-size: 0.75rem; 
    font-weight: 500; 
}

/* ===========================================
   Cards & Info Components
   =========================================== */
.info-cards { 
    display: flex; 
    flex-direction: column; 
    gap: 1rem; 
}

.info-card {
    display: flex; 
    align-items: center; 
    gap: 1.5rem; 
    padding: 1.5rem;
    border-radius: 1rem; 
    background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(245, 200, 66, 0.2);
    border-color: rgba(245, 200, 66, 0.3);
}

.info-card-icon {
    width: 4rem; 
    height: 4rem; 
    flex-shrink: 0; 
    display: flex; 
    align-items: center; 
    justify-content: center;
    border-radius: 1rem; 
    background: linear-gradient(135deg, rgba(139, 127, 245, 0.2), rgba(125, 211, 192, 0.1));
    color: var(--color-purple);
}

.info-card-icon svg { 
    width: 2rem; 
    height: 2rem; 
}

.info-card-content h3 { 
    font-size: 1.25rem; 
    font-weight: 700; 
    margin-bottom: 0.5rem; 
    line-height: 1.3;
    color: white;
}

.info-card-content p { 
    font-size: 1rem; 
    color: var(--color-text-muted-dark); 
    line-height: 1.6;
}

/* ===========================================
   Action Cards
   =========================================== */
.quick-actions {
    margin-top: 2rem;
    margin-bottom: 6rem; /* 하단 메뉴바와의 여유 공간 */
}

.section-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
}

.action-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.action-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-card-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    /* 모바일 터치 최적화 - 클릭 가능한 카드의 최소 높이 확보 */
    min-height: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.action-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(139, 127, 245, 0.2);
    border-color: var(--color-primary);
}

.action-icon {
    width: 3rem;
    height: 3rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    color: white;
}

.action-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.action-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--color-text-dark);
}

.action-content p {
    font-size: 0.875rem;
    color: var(--color-text-muted-dark);
    line-height: 1.4;
}

/* ===========================================
   Forms & Inputs
   =========================================== */
.profile-form {
    background: var(--color-card-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: 1rem;
    padding: 2rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* 폼 섹션 카드 */
.form-section-card {
    background: var(--color-card-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.form-section-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(139, 127, 245, 0.1);
}

.form-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin: 0 0 1.25rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--color-primary);
    opacity: 0.95;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--color-error);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    color: var(--color-text-dark);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 127, 245, 0.1);
}

.radio-group {
    display: flex;
    gap: 1rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--color-text-dark);
    font-size: 0.875rem;
    /* 터치 영역 확대 (접근성 개선) */
    min-height: 44px;
    min-width: 44px;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease;
}

.radio-label:hover {
    background: rgba(139, 127, 245, 0.1);
}

.radio-label input[type="radio"] {
    margin: 0;
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}


/* ===========================================
   User Info & Header Components
   =========================================== */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    z-index: 11;
    position: relative; /* 명시적 위치 지정 */
    margin-left: auto; /* 오른쪽으로 밀기 */
}

.user-name-button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.75rem;
    padding: 0.5rem 1rem;
    color: var(--color-text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    max-width: 8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: flex; /* 명시적 표시 */
    align-items: center; /* 수직 중앙 정렬 */
    min-width: fit-content; /* 최소 너비 보장 */
    /* 모바일 터치 최적화 - 최소 44x44px 확보 */
    min-height: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.user-name-button:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 127, 245, 0.3);
}

/* user-name span 요소 스타일 */
.user-name-button span {
    display: inline-block;
    color: inherit;
    font-size: inherit;
    font-weight: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}


/* ===========================================
   Profile Actions
   =========================================== */
.profile-actions {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border-dark);
    display: flex;
    justify-content: center;
}

/* 로그아웃 버튼이 숨겨질 때 */
.profile-actions[style*="display: none"] {
    display: none !important;
}

.btn-danger {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    border: 1px solid rgba(231, 76, 60, 0.3);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
    /* 모바일 터치 최적화 - 최소 44x44px 확보 */
    min-height: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c0392b, #a93226);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(231, 76, 60, 0.4);
}


/* ===========================================
   Auth Forms
   =========================================== */
.auth-form {
    margin-bottom: 1.5rem;
}

.auth-form .form-group {
    margin-bottom: 1rem;
}

.auth-form .form-label {
    display: block;
    font-weight: 500;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.auth-form .form-control {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border-dark);
    border-radius: 0.5rem;
    color: var(--color-text-dark);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.auth-form .form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 127, 245, 0.1);
}

.auth-form .btn {
    width: 100%;
    margin-top: 1rem;
}

/* Social Login */
.social-login {
    margin: 1.5rem 0;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border-dark);
}

.btn-google {
    background: white;
    color: #333;
    border: 1px solid #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
    /* 모바일 터치 최적화 - 최소 44x44px 확보 */
    min-height: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-google:hover {
    background: #f8f9fa;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-google svg {
    flex-shrink: 0;
}

/* Form Toggle */
.form-toggle {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border-dark);
}

.form-toggle p {
    color: var(--color-text-muted-dark);
    margin: 0;
    font-size: 0.875rem;
}

.form-toggle a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.form-toggle a:hover {
    color: var(--color-primary-dark);
}

/* Auth Message */
.auth-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    text-align: center;
}

.auth-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.auth-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ===========================================
   Share & Interactive Buttons
   =========================================== */
.share-icon-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-card-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: 0.5rem;
    color: var(--color-text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    font-weight: 500;
}

.share-icon-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 127, 245, 0.3);
}

.share-icon-btn svg {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.share-text {
    white-space: nowrap;
}

/* ===========================================
   Button Variants
   =========================================== */
.btn-secondary {
    background: var(--color-secondary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    /* 모바일 터치 최적화 - 최소 44x44px 확보 */
    min-height: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-secondary:hover {
    background: var(--color-secondary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    /* 모바일 터치 최적화 - 최소 44x44px 확보 */
    min-height: 44px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

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

.btn-danger {
    background: var(--color-danger);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-danger:hover {
    background: var(--color-danger-dark);
    transform: translateY(-2px);
}

/* ===========================================
   Button Context Styles
   =========================================== */
.login-prompt .btn {
    min-width: 200px;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.shine-effect::after {
    opacity: 1 !important;
}