:root {
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --primary-light: #a78bfa;
    --primary-bg: rgba(124, 58, 237, 0.08);
    --secondary: #0f172a;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --transition: 0.2s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--gray-800);background:var(--gray-50);line-height:1.6;min-height:100vh}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--gray-900)}
.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-muted{color:var(--gray-500)}.text-center{text-align:center}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 24px;font-size:.9rem;font-weight:600;font-family:var(--font);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);white-space:nowrap;user-select:none;min-height:44px}
.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover:not(:disabled){background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 14px rgba(124,58,237,.35)}
.btn-secondary{background:transparent;color:var(--gray-700);border-color:var(--gray-300)}
.btn-secondary:hover:not(:disabled){background:var(--gray-100);border-color:var(--gray-400)}
.btn-ghost{background:transparent;color:var(--gray-600);border-color:transparent}
.btn-ghost:hover:not(:disabled){background:var(--gray-100);color:var(--gray-800)}
.btn-success{background:var(--success);color:#fff;border-color:var(--success)}
.btn-success:hover:not(:disabled){background:#059669;transform:translateY(-1px)}
.btn-danger{background:var(--error);color:#fff;border-color:var(--error)}
.btn-danger:hover:not(:disabled){background:#dc2626}
.btn-lg{padding:14px 32px;font-size:1rem}.btn-sm{padding:6px 16px;font-size:.8rem;min-height:36px}.btn-block{width:100%}

.form-group{margin-bottom:20px}
.form-label{display:block;font-size:.875rem;font-weight:600;color:var(--gray-700);margin-bottom:6px}
.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;font-size:.925rem;font-family:var(--font);color:var(--gray-800);background:#fff;border:2px solid var(--gray-200);border-radius:var(--radius-md);transition:all var(--transition);outline:none;min-height:44px}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-bg)}
.form-hint{display:block;font-size:.75rem;color:var(--gray-500);margin-top:4px}
.form-error{display:block;font-size:.8rem;color:var(--error);margin-top:4px}

.card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:24px;transition:all var(--transition)}
.card:hover{box-shadow:var(--shadow-md)}

.badge{display:inline-flex;align-items:center;padding:3px 10px;font-size:.75rem;font-weight:600;border-radius:999px;text-transform:uppercase;letter-spacing:.02em}
.badge-pending,.badge-unpaid{background:#fef3c7;color:#92400e}
.badge-processing{background:#dbeafe;color:#1e40af}
.badge-completed,.badge-paid{background:#d1fae5;color:#065f46}
.badge-failed{background:#fee2e2;color:#991b1b}
.badge-refunded{background:#e0e7ff;color:#3730a3}

.alert{padding:14px 18px;border-radius:var(--radius-md);font-size:.875rem;margin-bottom:16px;display:flex;align-items:flex-start;gap:10px}
.alert-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.alert-success{background:#f0fdf4;color:#065f46;border:1px solid #bbf7d0}
.alert-warning{background:#fffbeb;color:#92400e;border:1px solid #fde68a}
.alert-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}

.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--gray-300);border-top-color:var(--primary);border-radius:50%;animation:spin .6s linear infinite}
.spinner-lg{width:32px;height:32px;border-width:3px}
.spinner-white{border-color:rgba(255,255,255,.3);border-top-color:#fff}
@keyframes spin{to{transform:rotate(360deg)}}

.loading-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.8);backdrop-filter:blur(4px);z-index:9999;align-items:center;justify-content:center;flex-direction:column;gap:16px}
.loading-overlay.active{display:flex}

.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(135deg,#f8fafc 0%,#e2e8f0 100%)}
.auth-container{width:100%;max-width:440px}
.auth-card{background:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:40px 32px;border:1px solid var(--gray-200)}
.auth-logo{text-align:center;margin-bottom:32px}
.auth-logo h1{font-size:1.75rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.auth-logo p{color:var(--gray-500);margin-top:4px;font-size:.9rem}
.auth-divider{display:flex;align-items:center;gap:16px;margin:24px 0;color:var(--gray-400);font-size:.8rem}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--gray-200)}
.auth-footer{text-align:center;margin-top:24px;color:var(--gray-500);font-size:.875rem}

.landing-header{padding:16px 0;border-bottom:1px solid var(--gray-200);background:#fff;position:sticky;top:0;z-index:100}
.landing-header .container{display:flex;align-items:center;justify-content:space-between}
.landing-logo{display:flex;align-items:center;gap:8px;font-size:1.25rem;font-weight:800;color:var(--gray-900)}
.landing-logo span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.landing-nav{display:flex;align-items:center;gap:12px}
.landing-hero{padding:100px 24px;text-align:center;background:linear-gradient(135deg,#f8fafc 0%,#ede9fe 50%,#ecfeff 100%)}
.landing-hero h1{font-size:3rem;max-width:720px;margin:0 auto 20px}
.landing-hero p{font-size:1.2rem;color:var(--gray-500);max-width:560px;margin:0 auto 36px}
.landing-hero .btn-group{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.landing-features{padding:80px 24px}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;max-width:1000px;margin:0 auto}
.feature-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:all var(--transition);cursor:default}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.feature-icon{width:56px;height:56px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.5rem}
.feature-icon.purple{background:var(--primary-bg);color:var(--primary)}
.feature-icon.cyan{background:rgba(6,182,212,.1);color:var(--accent)}
.feature-icon.green{background:rgba(16,185,129,.1);color:var(--success)}
.feature-card h3{margin-bottom:8px;font-size:1.1rem}
.feature-card p{color:var(--gray-500);font-size:.9rem}

.dashboard-layout{display:flex;min-height:100vh}

/* =============================================================
   SIDEBAR
   ============================================================= */
.sidebar-toggle{display:none;position:fixed;top:12px;left:12px;z-index:1001;width:40px;height:40px;border:none;background:var(--gray-900);color:#fff;font-size:1.25rem;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition)}
.sidebar-toggle:hover{background:var(--gray-700)}

.sidebar-backdrop{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:999}

.sidebar{width:260px;background:var(--gray-900);color:#fff;padding:24px 16px;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:1000;transition:transform var(--transition)}
.sidebar-logo{font-size:1.25rem;font-weight:800;padding:0 8px 24px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:16px}
.sidebar-logo span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.sidebar-link{display:flex;align-items:center;gap:10px;width:100%;padding:12px 14px;font-size:.875rem;font-weight:500;font-family:var(--font);color:var(--gray-400);background:transparent;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);text-align:left}
.sidebar-link:hover{background:rgba(255,255,255,.08);color:#fff}
.sidebar-link.active{background:rgba(124,58,237,.2);color:var(--primary-light);font-weight:600}
.sidebar-link .icon{font-size:1.1rem;width:20px;text-align:center}
.sidebar-footer{margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.1)}
.sidebar-user{display:flex;align-items:center;gap:10px;margin-bottom:12px;padding:4px 8px}
.sidebar-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;flex-shrink:0}
.sidebar-user-info{min-width:0}
.sidebar-user-name{font-size:.85rem;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-user-email{font-size:.7rem;color:var(--gray-500);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* =============================================================
   MAIN CONTENT
   ============================================================= */
.main-content{flex:1;margin-left:260px;padding:24px 32px;min-height:100vh}
.main-header{margin-bottom:24px}
.main-header h1{font-size:1.5rem;font-weight:700;color:var(--gray-900)}

.dashboard-sections{max-width:960px}
.section-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);margin-bottom:24px;overflow:hidden}
.section-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--gray-100)}
.section-header h2{font-size:1.1rem;font-weight:700;color:var(--gray-900)}
.section-body{padding:24px}

/* =============================================================
   STATS GRID
   ============================================================= */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:32px}
.stat-card{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:20px;text-align:center;transition:all var(--transition)}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.stat-value{font-size:2rem;font-weight:800;color:var(--gray-900);line-height:1.2}
.stat-label{font-size:.8rem;color:var(--gray-500);margin-top:4px;font-weight:500}

/* =============================================================
   UPLOAD ZONE
   ============================================================= */
.upload-zone{border:2px dashed var(--gray-300);border-radius:var(--radius-lg);padding:48px 24px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--gray-50)}
.upload-zone:hover{border-color:var(--primary-light);background:var(--primary-bg)}
.upload-zone.dragover{border-color:var(--primary);background:var(--primary-bg);transform:scale(1.01)}
.upload-icon{font-size:3rem;margin-bottom:12px}
.upload-zone h3{font-size:1.1rem;font-weight:600;color:var(--gray-700);margin-bottom:4px}
.upload-zone p{color:var(--gray-500);font-size:.9rem;margin-bottom:8px}
.upload-hint{display:block;font-size:.75rem;color:var(--gray-400);margin-top:8px}

.file-progress{margin-top:12px}
.progress-bar{width:100%;height:8px;background:var(--gray-200);border-radius:999px;overflow:hidden}
.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:999px;transition:width .4s ease;width:0%}

/* =============================================================
   ORDERS TABLE
   ============================================================= */
.orders-table{width:100%;border-collapse:collapse}
.orders-table th{text-align:left;padding:12px 16px;font-size:.8rem;font-weight:600;color:var(--gray-500);text-transform:uppercase;letter-spacing:.04em;border-bottom:2px solid var(--gray-200)}
.orders-table td{padding:14px 16px;font-size:.875rem;border-bottom:1px solid var(--gray-100);color:var(--gray-700)}
.orders-table tr:hover td{background:var(--gray-50)}
.orders-table .file-cell{max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.orders-table .actions-cell{display:flex;gap:8px;flex-wrap:wrap}

.empty-state{text-align:center;padding:48px 24px}
.empty-state .icon{font-size:3rem;margin-bottom:12px}
.empty-state h3{font-size:1.1rem;color:var(--gray-600);margin-bottom:4px}
.empty-state p{color:var(--gray-400);font-size:.875rem}

/* =============================================================
   MODAL
   ============================================================= */
.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);z-index:10000;align-items:center;justify-content:center;padding:24px}
.modal-overlay.active{display:flex}
.modal{background:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:480px;max-height:90vh;overflow-y:auto;animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--gray-200)}
.modal-header h2{font-size:1.15rem;font-weight:700}
.modal-close{width:32px;height:32px;border:none;background:var(--gray-100);color:var(--gray-500);border-radius:50%;font-size:.9rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition)}
.modal-close:hover{background:var(--gray-200);color:var(--gray-700)}
.modal-body{padding:24px}
.modal-footer{display:flex;gap:12px;justify-content:flex-end;padding:20px 24px;border-top:1px solid var(--gray-200)}

.payment-summary{background:var(--gray-50);border-radius:var(--radius-md);padding:16px}
.payment-summary .row{display:flex;justify-content:space-between;padding:8px 0;font-size:.9rem;color:var(--gray-600)}
.payment-summary .row.total{border-top:2px solid var(--gray-200);margin-top:8px;padding-top:12px;font-weight:700;color:var(--gray-900);font-size:1rem}

/* =============================================================
   TOAST NOTIFICATIONS
   ============================================================= */
.toast-container{position:fixed;top:20px;right:20px;z-index:10001;display:flex;flex-direction:column;gap:8px;max-width:380px}
.toast{padding:14px 20px;background:var(--gray-900);color:#fff;border-radius:var(--radius-md);font-size:.875rem;font-weight:500;box-shadow:var(--shadow-lg);cursor:pointer;animation:slideIn .3s ease;transition:all .3s ease}
.toast-success{background:var(--success)}
.toast-error{background:var(--error)}
.toast-info{background:var(--accent)}
@keyframes slideIn{from{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}

/* =============================================================
   PROFILE
   ============================================================= */
.profile-info{display:flex;flex-direction:column;gap:4px}
.profile-field{display:flex;padding:14px 0;border-bottom:1px solid var(--gray-100)}
.profile-field:last-child{border-bottom:none}
.profile-field .label{width:140px;font-size:.875rem;font-weight:600;color:var(--gray-500);flex-shrink:0}
.profile-field .value{font-size:.875rem;color:var(--gray-800)}

/* =============================================================
   UTILITY CLASSES
   ============================================================= */
.hidden{display:none!important}
.mt-8{margin-top:8px}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.mb-16{margin-bottom:16px}
.flex{display:flex}
.items-center{align-items:center}
.justify-between{justify-content:space-between}

/* =============================================================
   RESPONSIVE
   ============================================================= */
@media(max-width:768px){
.sidebar-toggle{display:flex;align-items:center;justify-content:center}
.sidebar{transform:translateX(-100%)}
.sidebar.open{transform:translateX(0)}
.main-content{margin-left:0;padding:16px;padding-top:64px}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.section-header{flex-direction:column;align-items:flex-start;gap:8px}
.orders-table{font-size:.8rem}
.orders-table th,.orders-table td{padding:10px 8px}
.orders-table .actions-cell{flex-direction:column}
.profile-field{flex-direction:column;gap:4px}
.profile-field .label{width:auto}
.modal-overlay{padding:16px}
.toast-container{left:16px;right:16px;max-width:none}
}

@media(max-width:480px){
.stats-grid{grid-template-columns:1fr}
.landing-hero h1{font-size:2rem}
.landing-hero{padding:60px 16px}
.auth-card{padding:28px 20px}
}

/* =============================================================
   ADMIN SPECIFIC STYLES
   ============================================================= */
.admin-body .main-header{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.admin-badge-header{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;font-size:.8rem;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-radius:999px;letter-spacing:.02em}
.admin-badge-sidebar{display:inline-block;font-size:.65rem;font-weight:700;padding:2px 8px;background:var(--accent);color:#fff;border-radius:999px;vertical-align:middle;margin-left:4px;letter-spacing:.03em}

.admin-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.admin-table th{font-size:.75rem;white-space:nowrap}
.admin-table td{font-size:.8rem}
.admin-table .file-cell{max-width:180px}

.breakdown-grid{display:flex;flex-wrap:wrap;gap:8px}
.breakdown-item{display:flex;align-items:center;gap:8px;background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:10px 16px;font-size:.85rem}
.breakdown-label{font-weight:600}
.breakdown-value{font-weight:800;font-size:1.1rem;color:var(--gray-900)}

.admin-status-section{margin-top:24px;padding-top:24px;border-top:1px solid var(--gray-200)}

.admin-link{display:block;text-align:center;font-size:.75rem;color:var(--gray-400);padding:8px 0 0;transition:color var(--transition)}
.admin-link:hover{color:var(--primary-light)}

/* Scan detail button */
.scan-detail-btn{font-size:.85rem;padding:4px 10px;min-height:32px}

/* Admin login on auth page */
.admin-login-link{text-align:center;margin-top:12px;padding-top:12px;border-top:1px solid var(--gray-100)}

/* Responsive admin */
@media(max-width:768px){
.admin-filters{flex-direction:column;align-items:stretch}
.admin-filters input,.admin-filters select{width:100%!important}
.admin-table{font-size:.75rem}
.admin-table th,.admin-table td{padding:8px 6px}
}