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

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    min-height: 100vh;
    color: #1e293b;
    overflow-x: hidden;
    line-height: 1.6;
    font-weight: 400;
}

/* Login Page Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
}

.login-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 48px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.04);
    width: 100%;
    max-width: 420px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-logo {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.login-logo-image {
    margin-bottom: 20px;
    text-align: center;
}

.logo-img {
    max-width: 200px;
    max-height: 80px;
    object-fit: contain;
}

.login-brand-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    border-radius: 12px;
    padding: 8px;
    margin: -8px;
    margin-bottom: 20px;
}

.login-brand-link:hover {
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.login-brand-link:hover .login-logo {
    color: #3b82f6;
}

.login-brand-link:hover .login-subtitle {
    color: #3b82f6;
}

.login-subtitle {
    color: #64748b;
    margin-bottom: 30px;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #1e293b;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 16px;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
    color: #1e293b;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: rgba(255, 255, 255, 1);
}

/* 개선된 버튼 스타일 */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    border: 1px solid #3b82f6;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
    border: 1px solid #1d4ed8;
}

.btn-secondary {
    background: rgba(100, 116, 139, 0.1);
    color: #64748b;
    border: 1px solid rgba(100, 116, 139, 0.2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    background: rgba(100, 116, 139, 0.15);
    border-color: rgba(100, 116, 139, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    border: 1px solid #10b981;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
    border: 1px solid #059669;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
    border: 1px solid #f59e0b;
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
    border: 1px solid #d97706;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
    border: 1px solid #ef4444;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.4);
    border: 1px solid #dc2626;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 16px 28px;
    font-size: 1rem;
}

/* Dashboard Styles */
.dashboard-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header-logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: #1e293b;
    letter-spacing: -0.5px;
    position: relative;
}

.header-logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8, #3b82f6);
    border-radius: 1px;
}

.header-logo-image {
    margin-right: 16px;
    display: flex;
    align-items: center;
}

.header-logo-img {
    max-width: 120px;
    max-height: 40px;
    object-fit: contain;
}

.header-brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    border-radius: 8px;
    padding: 4px 8px;
    margin: -4px -8px;
}

.header-brand-link:hover {
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

.header-brand-link:hover .header-logo {
    color: #3b82f6;
}

.header-brand-link:hover .header-title {
    color: #3b82f6;
}

.header-title {
    font-size: 1rem;
    font-weight: 500;
    color: #64748b;
    border-left: 2px solid #3b82f6;
    padding-left: 16px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    color: #1e293b;
    font-weight: 500;
    font-size: 0.9rem;
}

.logout-link {
    color: #ef4444;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.logout-link:hover {
    color: #dc2626;
    text-decoration: underline;
}

/* Main Layout */
.main-layout {
    display: flex;
    margin-top: 72px;
    min-height: calc(100vh - 72px);
    width: 80%;
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
}

.sidebar {
    width: 280px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(226, 232, 240, 0.8);
    padding: 24px 0;
    position: fixed;
    height: calc(100vh - 72px);
    overflow-y: auto;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.06);
    top: 72px;
    z-index: 100;
}

.sidebar-header {
    padding: 0 28px 24px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    margin-bottom: 24px;
    position: relative;
}

.sidebar-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 28px;
    right: 28px;
    height: 1px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8, #3b82f6);
    border-radius: 1px;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.sidebar-subtitle {
    color: #64748b;
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 14px 28px;
    color: #64748b;
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0;
    margin-right: 16px;
    font-weight: 400;
    position: relative;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: rgba(59, 130, 246, 0.08);
    color: #1e293b;
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
}

.nav-link.active {
    background: rgba(59, 130, 246, 0.12);
    color: #1e293b;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
    font-weight: 500;
    border-left: 3px solid #3b82f6;
}

.nav-icon {
    margin-right: 14px;
    width: 18px;
    text-align: center;
    color: #64748b;
}

.nav-link:hover .nav-icon,
.nav-link.active .nav-icon {
    color: #3b82f6;
}

.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 32px;
    background: transparent;
    min-height: calc(100vh - 72px);
    position: relative;
    max-width: calc(100% - 280px);
}

.page-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 28px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.3) 20%, 
        rgba(59, 130, 246, 0.6) 50%, 
        rgba(59, 130, 246, 0.3) 80%, 
        transparent 100%);
    opacity: 0.8;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-title-text {
    flex: 1;
}

.page-title-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.page-subtitle {
    color: #64748b;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: 4px;
}

/* Card Styles */
.card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 28px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.3) 20%, 
        rgba(59, 130, 246, 0.6) 50%, 
        rgba(59, 130, 246, 0.3) 80%, 
        transparent 100%);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.card:hover::before {
    opacity: 1;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.4) 20%, 
        rgba(59, 130, 246, 0.8) 50%, 
        rgba(59, 130, 246, 0.4) 80%, 
        transparent 100%);
}

/* 카드 헤더 개선 */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    position: relative;
}

.card-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.2) 30%, 
        rgba(59, 130, 246, 0.4) 50%, 
        rgba(59, 130, 246, 0.2) 70%, 
        transparent 100%);
    border-radius: 1px;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    letter-spacing: -0.3px;
    margin: 0;
}

.card-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Statistics Grid Styles */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.stat-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.02);
    backdrop-filter: blur(10px);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.2) 20%, 
        rgba(59, 130, 246, 0.4) 50%, 
        rgba(59, 130, 246, 0.2) 80%, 
        transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.stat-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
    border-color: rgba(59, 130, 246, 0.3);
}

.stat-card:hover::before {
    opacity: 1;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.3) 20%, 
        rgba(59, 130, 246, 0.6) 50%, 
        rgba(59, 130, 246, 0.3) 80%, 
        transparent 100%);
}

.stat-card:hover::after {
    opacity: 1;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    position: relative;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.stat-card:hover .stat-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.stat-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 14px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), transparent);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
}

.stat-icon-customers {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 50%, #3b82f6 100%);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.stat-icon-subscribed {
    background: linear-gradient(135deg, #10b981 0%, #059669 50%, #10b981 100%);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
}

.stat-icon-pending {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #f59e0b 100%);
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
}

.stat-icon-processing {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 50%, #06b6d4 100%);
    box-shadow: 0 4px 16px rgba(6, 182, 212, 0.4);
}

.stat-icon-today {
    background: linear-gradient(135deg, #10b981 0%, #059669 50%, #10b981 100%);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
}

.stat-icon-month {
    background: linear-gradient(135deg, #10b981 0%, #059669 50%, #10b981 100%);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
    opacity: 0.9;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: #1e293b;
    line-height: 1.1;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    margin-bottom: 4px;
}

.stat-card:hover .stat-value {
    color: #0f172a;
}

/* Table Styles */
.table-container {
    overflow-x: auto;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.table th,
.table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    color: #1e293b;
    font-size: 0.9rem;
}

.table th {
    background: rgba(59, 130, 246, 0.08);
    font-weight: 600;
    color: #1e293b;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

.table th::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8, #3b82f6);
    border-radius: 1px;
}

.table tr:hover {
    background: rgba(59, 130, 246, 0.04);
    transition: background 0.3s ease;
}

/* Status Badges */
.badge {
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.badge-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.badge-info {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: white;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
}

.badge-secondary {
    background: linear-gradient(135deg, #64748b, #475569);
    color: white;
    box-shadow: 0 2px 8px rgba(100, 116, 139, 0.3);
}

/* Form Styles */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 25px;
}

.btn-group {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d, #495057);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    border: 2px solid #6c757d;
    border-radius: 0;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #5a6268, #343a40);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    border: 2px solid #495057;
}

/* Alert Styles */
.alert {
    padding: 20px 25px;
    border-radius: 15px;
    margin-bottom: 25px;
    border-left: 5px solid;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.alert:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: #155724;
    border-color: #28a745;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: #721c24;
    border-color: #dc3545;
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    color: #856404;
    border-color: #ffc107;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 10px 20px;
    }
    
    .header-logo {
        font-size: 1.5rem;
    }
    
    .header-title {
        font-size: 1rem;
        display: none;
    }
    
    .user-info span {
        font-size: 0.8rem;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 250px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 12px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 20px;
    }
    
    .page-header {
        padding: 24px;
    }
    
    .page-title {
        font-size: 1.8rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .page-title-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .search-filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-input,
    .filter-select {
        min-width: auto;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .card-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* 반응형 그리드 조정 */
@media (min-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .main-layout {
        width: 95%;
        max-width: 100%;
    }
    
    .sidebar {
        width: 260px;
    }
    
    .main-content {
        margin-left: 260px;
        padding: 24px;
        max-width: calc(100% - 260px);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .stat-icon {
        width: 48px;
        height: 48px;
    }
    
    .stat-value {
        font-size: 1.6rem;
    }
    
    .card {
        padding: 24px;
        max-width: 100%;
    }
    
    .page-header {
        padding: 28px;
        max-width: 100%;
    }
    
    .page-title {
        font-size: 2rem;
    }
} 

/* 추가 통계 정보 스타일 */
.stat-trend {
    font-size: 0.7rem;
    color: #10b981;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 4px;
}

.stat-trend.negative {
    color: #ef4444;
}

.trend-period {
    color: #64748b;
    font-weight: 400;
}

/* 기간 선택기 */
.period-selector {
    display: flex;
    align-items: center;
    gap: 12px;
}

.form-control-sm {
    padding: 8px 12px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 8px;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.9);
    color: #1e293b;
    transition: all 0.3s ease;
}

.form-control-sm:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* 차트 그리드 */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    margin-bottom: 28px;
}

.chart-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.chart-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.3) 20%, 
        rgba(59, 130, 246, 0.6) 50%, 
        rgba(59, 130, 246, 0.3) 80%, 
        transparent 100%);
    opacity: 0.8;
}

.chart-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    position: relative;
}

.chart-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.2) 30%, 
        rgba(59, 130, 246, 0.4) 50%, 
        rgba(59, 130, 246, 0.2) 70%, 
        transparent 100%);
    border-radius: 1px;
}

.chart-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    letter-spacing: -0.3px;
}

.chart-actions {
    display: flex;
    gap: 8px;
}

.btn-chart-action {
    padding: 6px 12px;
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-chart-action:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-1px);
}

.chart-content {
    position: relative;
}

.chart-container {
    height: 300px;
    margin-bottom: 16px;
}

.chart-legend {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
}

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

.legend-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: #1e293b;
}

.legend-value {
    font-size: 0.75rem;
    color: #64748b;
}

.chart-table {
    margin-top: 16px;
}

.mini-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.mini-table th,
.mini-table td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    color: #1e293b;
}

.mini-table th {
    background: rgba(59, 130, 246, 0.05);
    font-weight: 600;
    color: #1e293b;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mini-table tr:hover {
    background: rgba(59, 130, 246, 0.02);
}

.positive {
    color: #10b981;
    font-weight: 600;
}

.negative {
    color: #ef4444;
    font-weight: 600;
}

/* 실시간 통계 */
.realtime-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.realtime-item {
    background: rgba(59, 130, 246, 0.05);
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.realtime-item:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.2);
    transform: translateY(-1px);
}

.realtime-label {
    font-size: 0.75rem;
    color: #64748b;
    font-weight: 500;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.realtime-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
}

/* 카드 액션 버튼 */
.card-actions {
    display: flex;
    gap: 8px;
}

.btn-secondary {
    padding: 8px 16px;
    background: rgba(100, 116, 139, 0.1);
    color: #64748b;
    border: 1px solid rgba(100, 116, 139, 0.2);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(100, 116, 139, 0.15);
    border-color: rgba(100, 116, 139, 0.3);
    transform: translateY(-1px);
}

/* 반응형 차트 그리드 */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .chart-card {
        padding: 20px;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .realtime-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .realtime-value {
        font-size: 1.3rem;
    }
} 

/* 검색 및 필터 섹션 */
.search-filter-section {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.search-filter-form {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 12px 16px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 10px;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.9);
    color: #1e293b;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: rgba(255, 255, 255, 1);
}

.filter-select {
    padding: 12px 16px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 10px;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.9);
    color: #1e293b;
    transition: all 0.3s ease;
    min-width: 150px;
}

.filter-select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: rgba(255, 255, 255, 1);
}