/* ===== NVIEW - Modern Clean Design ===== */

/* CSS Variables for consistent theming */
:root {
    /* Color Palette */
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #e2e8f0;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    
    /* Neutral Colors */
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-light: #a0aec0;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== SIDEBAR STYLES - ENHANCED ===== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 320px;
    background: var(--bg-primary);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    overflow-y: auto;
}

.sidebar-collapsed {
    width: 80px;
}

.sidebar-header {
    padding: var(--spacing-xl) var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    flex-shrink: 0;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
}

.sidebar-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    outline: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.25rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1 !important;
    transform: none !important;
}

.sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05) !important;
}

.sidebar-menu {
    flex: 1;
    padding: var(--spacing-md) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    overflow-y: auto;
}

/* Menu Sections */
.menu-section {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

.menu-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: var(--spacing-sm);
}

.menu-section-title:hover {
    color: var(--text-secondary);
}

.menu-section.collapsed .sidebar-menu-item {
    display: none;
}

.menu-section.collapsed .menu-section-title::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid var(--text-light);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    margin-left: auto;
}

.menu-section-title::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid var(--text-light);
    margin-left: auto;
    transition: transform 0.3s ease;
}

.sidebar-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: var(--font-weight-medium);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    margin-right: var(--spacing-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.sidebar-menu-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.sidebar-menu-item.active,
.sidebar-menu-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.05));
    color: var(--primary-color);
    transform: translateX(8px);
}

.sidebar-menu-item.active::before,
.sidebar-menu-item:hover::before {
    transform: scaleY(1);
}

/* Logout Item Special Style */
.sidebar-menu-item.logout-item {
    border-top: 1px solid var(--border-light);
    margin-top: var(--spacing-md);
    color: #dc2626;
}

.sidebar-menu-item.logout-item:hover {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1), rgba(185, 28, 28, 0.05));
    color: #dc2626;
}

.sidebar-menu-item.logout-item::before {
    background: #dc2626;
}

.sidebar-icon {
    font-size: 1.25rem;
    min-width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-text {
    transition: all 0.3s ease;
    white-space: nowrap;
    flex: 1;
}

.sidebar-badge {
    background: var(--accent-color);
    color: white;
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: auto;
}

.external-link-icon {
    font-size: 0.75rem;
    margin-left: auto;
    color: var(--text-tertiary);
    opacity: 0.6;
    transition: all 0.3s ease;
}

.sidebar-menu-item:hover .external-link-icon {
    opacity: 1;
    color: var(--primary-color);
    transform: translateX(2px);
}

.sidebar-collapsed .sidebar-text,
.sidebar-collapsed .menu-section-title,
.sidebar-collapsed .sidebar-badge,
.sidebar-collapsed .external-link-icon {
    opacity: 0;
    transform: translateX(-20px);
}

.sidebar-collapsed .sidebar-logo {
    opacity: 0;
    transform: translateX(-20px);
}

/* 사이드바가 접혀도 토글 버튼 헤더는 보이도록 */
.sidebar-collapsed .sidebar-header {
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-collapsed .sidebar-header .sidebar-logo {
    display: none;
}

.sidebar-collapsed .sidebar-toggle {
    opacity: 1 !important;
    transform: none !important;
}

.sidebar-collapsed .menu-section-title::after {
    display: none;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* ===== MAIN LAYOUT ===== */
.main-layout {
    margin-left: 320px;
    transition: margin-left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 100vh;
    padding: var(--spacing-xl);
    background: transparent;
}

.sidebar-collapsed ~ .main-layout {
    margin-left: 80px;
}

/* ===== ANNOUNCEMENT STYLES ===== */
.announcement-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.announcement-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

.announcement-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.announcement-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.announcement-icon {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    animation: pulse 2s infinite;
}

.announcement-message {
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    margin: 0;
}

.announcement-title {
    font-size: 0.875rem;
    font-weight: var(--font-weight-bold);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.announcement-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.announcement-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.announcement-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    color: white;
}

.announcement-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.announcement-close:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

/* 다양한 공지사항 타입 */
.announcement-info {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

.announcement-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.announcement-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.announcement-event {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

/* 슬라이딩 멀티 공지사항 */
.announcements-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.announcements-slider {
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.announcement-slide {
    display: none;
    animation: slideInDown 0.6s ease-out;
}

.announcement-slide.active {
    display: block;
}

.announcement-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* ===== HEADER STYLES ===== */
header {
    background: var(--bg-primary);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}



header h1 {
    color: var(--text-primary);
    font-size: 2.25rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-sm);
}

header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ===== CARD STYLES ===== */
.card {
    background: var(--bg-primary);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.02));
}

.card-body {
    padding: var(--spacing-xl);
}

.card-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ===== FORM STYLES ===== */
.form {
    background: var(--bg-primary);
    backdrop-filter: blur(20px);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    max-width: 500px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.form-input::placeholder {
    color: var(--text-light);
}

.form-help {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* ===== BUTTON STYLES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 48px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

/* ===== ALERT STYLES ===== */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-info {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.05));
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.alert-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.05));
    color: #dc2626;
    border-left-color: #dc2626;
}

.alert-success {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(22, 163, 74, 0.05));
    color: #059669;
    border-left-color: #059669;
}

/* ===== ANALYSIS RESULT STYLES ===== */
.analysis-result {
    background: var(--bg-primary);
    backdrop-filter: blur(20px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    margin-bottom: var(--spacing-xl);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.result-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.result-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
    }
    
    .main-layout {
        margin-left: 80px;
    }
    
    .sidebar-text,
    .sidebar-logo,
    .menu-section-title,
    .sidebar-badge {
        opacity: 0;
        transform: translateX(-20px);
    }
    
    /* 태블릿에서도 토글 버튼은 보이도록 */
    .sidebar-toggle {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* 헤더 네비게이션 */
.header-nav {
    background: white;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    position: relative;
    z-index: 100;
    margin-bottom: var(--spacing-lg);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 100%;
    margin: 0 auto;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.header-logo i {
    font-size: 1.75rem;
}

.header-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    transition: all 0.2s ease;
}

.header-menu-item:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.mobile-menu-toggle {
    display: none;
    background: var(--primary-color);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    padding: var(--spacing-sm);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: #2563eb;
    transform: scale(1.05);
}

/* 페이지 제목 섹션 */
.page-title-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
}

.page-title-section h1 {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-title-section p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-320px);
        width: 320px;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-layout {
        margin-left: 0;
        padding: var(--spacing-md);
    }
    
    /* 헤더 모바일 스타일 */
    .header-container {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .header-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .header-logo {
        font-size: 1.25rem;
    }
    
    .header-logo i {
        font-size: 1.5rem;
    }
    
    /* 페이지 제목 모바일 스타일 */
    .page-title-section {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }
    
    .page-title-section h1 {
        font-size: 2rem;
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .page-title-section p {
        font-size: 1rem;
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .form {
        padding: var(--spacing-xl);
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(-50px);
    }
    50% {
        opacity: 1;
        transform: scale(1.05) translateY(0);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in {
    animation: slideInLeft 0.6s ease-out;
}

.animate-bounce-in {
    animation: bounceIn 0.8s ease-out;
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ===== 사용량 정보 카드 스타일 ===== */
.usage-info-card {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.usage-info-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.usage-header h4 {
    margin: 0;
    color: #1e293b;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.usage-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1rem 0;
}

.usage-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.usage-label {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
}

.usage-value {
    font-size: 1.125rem;
    color: #1e293b;
    font-weight: 700;
}

.usage-bar {
    background: #e2e8f0;
    border-radius: 6px;
    height: 8px;
    overflow: hidden;
    margin: 1rem 0 0.5rem 0;
}

.usage-progress {
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    height: 100%;
    border-radius: 6px;
    transition: width 0.3s ease;
}

.usage-progress.warning {
    background: linear-gradient(90deg, #f59e0b, #d97706);
}

.usage-progress.danger {
    background: linear-gradient(90deg, #ef4444, #dc2626);
}

.usage-alert {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 0.75rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: #dc2626;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.usage-alert a {
    color: #dc2626;
    text-decoration: underline;
    font-weight: 600;
}

@media (max-width: 768px) {
    .usage-stats {
        grid-template-columns: 1fr;
    }
}