/* ============================================
   PAYMENT PLATFORM - MODERN VIBRANT DESIGN
   Color Palette:
   - Primary: #6366f1 (Indigo)
   - Secondary: #f59e0b (Amber)  
   - Success: #10b981 (Emerald)
   - Danger: #ef4444 (Red)
   - Warning: #f59e0b (Amber)
   - Info: #3b82f6 (Blue)
   - Dark: #1e293b (Slate-800)
   - Light: #f8fafc (Slate-50)
   ============================================ */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    
    --secondary: #f59e0b;
    --secondary-dark: #d97706;
    --secondary-light: #fbbf24;
    
    --success: #10b981;
    --success-dark: #059669;
    --success-light: #34d399;
    
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --danger-light: #f87171;
    
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --warning-light: #fbbf24;
    
    --info: #3b82f6;
    --info-dark: #2563eb;
    --info-light: #60a5fa;
    
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f8fafc;
    --white: #ffffff;
    
    --border-color: #e2e8f0;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.05);
    --card-shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.5;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--dark);
}

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

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

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation Bar */
.navbar {
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform 0.2s ease;
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(99,102,241,0.25);
}

.logo-icon i {
    font-size: 22px;
    color: white;
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    color: #475569;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border-radius: 40px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link i {
    font-size: 16px;
}

/*
.nav-link:hover {
    background: #f1f5f9;
    color: var(--primary);
}
*/

/* .nav-link.active {
    background: linear-gradient(135deg, rgba(99,102,241,0.1) 0%, rgba(139,92,246,0.1) 100%);
    color: var(--primary);
} */

.btn-login {
    background: transparent;
    border: 1px solid #cbd5e1;
    color: #475569;
}

/*
.btn-login:hover {
    background: #f8fafc;
    border-color: var(--primary);
    color: var(--primary);
}*/

.btn-signup {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

/*
.btn-signup:hover {
    background: linear-gradient(135deg, #5558e3 0%, #7c3aed 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99,102,241,0.4);
    color: white;
}*/

/* User Avatar */
.user-avatar {
    width: 38px;
    height: 38px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 100;
    border: 1px solid var(--border-color);
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #4a5568;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.dropdown-menu a i {
    width: 20px;
    color: #a0aec0;
}

.dropdown-menu a:hover {
    background: #f7fafc;
    color: var(--primary);
}

.dropdown-menu a:hover i {
    color: var(--primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #475569;
    cursor: pointer;
    padding: 8px;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    z-index: 999;
    padding: 20px;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.mobile-nav.open {
    transform: translateX(0);
    display: block;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mobile-nav-link {
    padding: 14px 16px;
    color: #475569;
    text-decoration: none;
    font-weight: 500;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-nav-link i {
    width: 24px;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: #f1f5f9;
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 40px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99,102,241,0.4);
    color: white;
}

.btn-secondary {
    background: #f1f5f9;
    color: var(--dark);
}

.btn-secondary:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
}

.btn-success {
    background: var(--success);
    color: white;
}

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

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-sm {
    padding: 6px 16px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--card-shadow-hover);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.card-header h2, .card-header h3 {
    margin: 0;
    font-size: 18px;
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--light);
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99,102,241,0.1);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--gray-light);
}

.form-hint {
    display: block;
    font-size: 12px;
    color: var(--gray);
    margin-top: 6px;
}

/* Alerts */
.alert {
    padding: 14px 18px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.alert i {
    font-size: 20px;
}

.alert-success {
    background: #d1fae5;
    border-left: 4px solid var(--success);
    color: var(--success-dark);
}

.alert-error {
    background: #fee2e2;
    border-left: 4px solid var(--danger);
    color: var(--danger-dark);
}

.alert-warning {
    background: #fef3c7;
    border-left: 4px solid var(--warning);
    color: var(--warning-dark);
}

.alert-info {
    background: #dbeafe;
    border-left: 4px solid var(--info);
    color: var(--info-dark);
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 11px;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: var(--success-dark);
}

.badge-danger {
    background: #fee2e2;
    color: var(--danger-dark);
}

.badge-warning {
    background: #fef3c7;
    color: var(--warning-dark);
}

.badge-info {
    background: #dbeafe;
    color: var(--info-dark);
}

.badge-primary {
    background: #e0e7ff;
    color: var(--primary-dark);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--light);
    font-weight: 600;
    font-size: 13px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tr:hover {
    background: var(--light);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.pagination a {
    background: var(--white);
    color: var(--dark);
    border: 1px solid var(--border-color);
}

.pagination a:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination .active {
    background: var(--primary-gradient);
    color: white;
    border: none;
}

.pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--white);
    border-radius: 24px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 24px;
}

.tab {
    padding: 12px 24px;
    background: none;
    border: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
}

.tab:hover {
    color: var(--primary);
}

.tab.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    margin-bottom: -2px;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }
.text-muted { color: var(--gray); }

.bg-primary { background: var(--primary-gradient); }
.bg-light { background: var(--light); }
.bg-white { background: var(--white); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.p-4 { padding: 32px; }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* Responsive */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .flex-between { flex-direction: column; align-items: stretch; gap: 16px; }
    .data-table { font-size: 12px; }
    .data-table th, .data-table td { padding: 8px 12px; }
}

@media (max-width: 480px) {
    .card-header { flex-direction: column; align-items: stretch; }
    .btn-block-mobile { width: 100%; justify-content: center; }
}