:root {
    --bg-main: #F4F6F9;
    --bg-card: #FFFFFF;
    --border-color: #E5E7EB;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --primary: #10B981;
    --primary-hover: #059669;
    --primary-glow: rgba(16, 185, 129, 0.08);
    --danger: #EF4444;
    --danger-hover: #DC2626;
    --danger-glow: rgba(239, 68, 68, 0.08);
    --warning: #F59E0B;
    --warning-glow: rgba(245, 158, 11, 0.08);
    --info: #3B82F6;
    --info-glow: rgba(59, 130, 246, 0.08);
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --shadow-card: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.01), 0 0 0 1px rgba(0, 0, 0, 0.03);
    --radius-lg: 10px;
    --radius-md: 6px;
    --radius-sm: 4px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-hover);
}

/* Base Layout Container */
.layout-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* Center Form Layout */
.center-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
    padding: 20px;
    background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.04), transparent 40%),
                radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.03), transparent 40%);
}

/* Sidebar Layout */
.sidebar {
    width: 240px;
    background: #FFFFFF;
    border-right: 1px solid var(--border-color);
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 8px;
}

.sidebar-brand span {
    color: var(--primary);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.nav-section-title {
    padding: 14px 12px 4px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    opacity: 0.5;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.15s ease;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.03);
}

.nav-item.active {
    background: rgba(16, 185, 129, 0.08);
    color: var(--primary);
    font-weight: 600;
    border-left: 3px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.nav-item svg {
    width: 18px;
    height: 18px;
}

.main-content {
    flex: 1;
    padding: 28px;
    overflow-y: auto;
    background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.02), transparent 40%);
}

/* Glassmorphism Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 20px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Forms & Fields */
.form-group {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    background: #FFFFFF;
    border: 1px solid #D1D5DB;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.15s ease;
}

.form-control:focus {
    border-color: var(--primary);
    background: #FFFFFF;
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    border: none;
    transition: all 0.15s ease;
    gap: 6px;
    width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: #FFFFFF;
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-danger {
    background: var(--danger);
    color: #FFFFFF;
}

.btn-danger:hover {
    background: var(--danger-hover);
    box-shadow: 0 4px 12px var(--danger-glow);
}

/* Metrics Dashboard Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.metric-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, transparent, rgba(0, 0, 0, 0.01));
    border-radius: 0 0 0 100%;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-value.revenue {
    color: var(--primary);
}

/* Beautiful Interactive Tables */
.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--shadow-card);
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.custom-table th {
    background: #F9FAFB;
    padding: 10px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.custom-table td {
    padding: 10px 16px;
    font-size: 0.88rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.custom-table tbody tr {
    transition: background-color 0.15s ease;
}

.custom-table tbody tr:hover {
    background: #F9FAFB;
}

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Interactive Credit Card UI */
.card-wrapper {
    perspective: 1000px;
    width: 100%;
    max-width: 380px;
    margin: 0 auto 30px auto;
}

.credit-card {
    width: 100%;
    height: 220px;
    border-radius: 15px;
    position: relative;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.credit-card.flipped {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    width: 100%;
    height: 100%;
    border-radius: 15px;
    position: absolute;
    backface-visibility: hidden;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: linear-gradient(135deg, #0D9488 0%, #115E59 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-back {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, #115E59 0%, #0F766E 100%);
    padding: 24px 0;
    justify-content: flex-start;
    gap: 20px;
}

.card-chip {
    width: 45px;
    height: 35px;
    background: linear-gradient(135deg, #F3F4F6 0%, #D1D5DB 100%);
    border-radius: 6px;
    position: relative;
    overflow: hidden;
}

.card-chip::after {
    content: '';
    position: absolute;
    inset: 5px;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

.card-brand-logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-style: italic;
    color: #FFFFFF;
    text-align: right;
}

.card-number-display {
    font-size: 1.35rem;
    letter-spacing: 3px;
    color: #FFFFFF;
    word-spacing: 4px;
    font-family: 'Courier New', Courier, monospace;
    margin: 15px 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.4);
}

.card-holder-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.card-holder-label {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.card-holder-value {
    font-size: 0.95rem;
    color: #FFFFFF;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-expiry-value {
    font-size: 0.95rem;
    color: #FFFFFF;
    font-weight: 600;
    font-family: 'Courier New', Courier, monospace;
}

/* Card Back Design */
.card-black-line {
    width: 100%;
    height: 45px;
    background: #000000;
}

.card-cvv-stripe {
    width: 80%;
    height: 35px;
    background: #E5E7EB;
    margin-left: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 12px;
}

.card-cvv-value {
    color: #000000;
    font-weight: 700;
    font-style: italic;
    font-family: 'Courier New', Courier, monospace;
    letter-spacing: 1px;
}

/* Modal and Utility Styles */
.modal-trigger-btn {
    width: auto;
    align-self: flex-start;
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.alert-message {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    margin-bottom: 18px;
    font-weight: 500;
    font-size: 0.88rem;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.08);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.15);
}

.alert-success {
    background: rgba(16, 185, 129, 0.08);
    color: var(--primary);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

/* Success and Failed Screen Specifics */
.receipt-wrapper {
    max-width: 480px;
    width: 100%;
    text-align: center;
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px auto;
}

.icon-circle.success {
    background: rgba(16, 185, 129, 0.08);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.icon-circle.danger {
    background: rgba(239, 68, 68, 0.08);
    color: var(--danger);
    border: 2px solid var(--danger);
}

.receipt-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.receipt-desc {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.receipt-details {
    background: #F9FAFB;
    border: 1px solid #E5E7EB;
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 20px;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
}

.receipt-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
}

.receipt-row .label {
    color: var(--text-secondary);
}

.receipt-row .val {
    font-weight: 600;
    color: var(--text-primary);
}

/* Copy Link Pop-up Alert */
.success-link-box {
    background: rgba(16, 185, 129, 0.02);
    border: 1px dashed var(--primary);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.copy-input-group {
    display: flex;
    gap: 10px;
}

.copy-input {
    flex: 1;
    background: #F3F4F6;
    border: 1px solid #D1D5DB;
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    outline: none;
    font-size: 0.9rem;
}

.btn-copy {
    width: auto;
    padding: 10px 16px;
    background: var(--primary);
    color: white;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
}

/* Pagination container */
.pagination-container {
    padding: 15px 24px;
    border-top: 1px solid var(--border-color);
    background: #F9FAFB;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pagination-container nav svg {
    height: 20px;
}

/* Modal popup */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    padding: 20px;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content-wrapper {
    max-width: 500px;
    width: 100%;
}