/* =========================================================
   OurBank Demo — Design System
   Recreates the banking UI shown in the reference screenshots:
   blue gradient header, white/dark sidebar, rounded widget cards.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root{
  --primary-blue:#0057B8;
  --header-grad-start:#005CB9;
  --header-grad-end:#004A94;
  --bg:#F4F6F9;
  --sidebar-bg:#FFFFFF;
  --sidebar-hover:#EEF5FF;
  --sidebar-active:#DDEBFF;
  --card-bg:#FFFFFF;
  --card-bg-secondary:#FAFBFC;
  --border:#E4E7EC;
  --text-primary:#1F2937;
  --text-secondary:#6B7280;
  --text-muted:#9CA3AF;
  --accent-blue:#1D4ED8;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#DC2626;
  --info:#2563EB;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.06);
  --shadow-hover:0 8px 24px rgba(16,24,40,.10);
  --font:'Inter',-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}

[data-theme="dark"]{
  --primary-blue:#0057B8;
  --header-grad-start:#005CB9;
  --header-grad-end:#003F7F;
  --bg:#111111;
  --sidebar-bg:#1A1A1A;
  --sidebar-hover:#242424;
  --sidebar-active:#1F2D3D;
  --card-bg:#1E1E1E;
  --card-bg-secondary:#262626;
  --border:#333333;
  --text-primary:#FFFFFF;
  --text-secondary:#B8B8B8;
  --text-muted:#8A8A8A;
  --accent-blue:#2196F3;
  --success:#22C55E;
  --warning:#F59E0B;
  --danger:#EF4444;
  --info:#3B82F6;
}

*{box-sizing:border-box}
html{-webkit-font-smoothing:antialiased}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text-primary);
  margin:0;
  transition:background-color .25s ease, color .25s ease;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}

::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:8px}

/* ---------------- Layout shell ---------------- */
.app-shell{display:flex;min-height:100vh}

.sidebar{
  width:250px;
  flex-shrink:0;
  background:var(--sidebar-bg);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:1000;
  transition:transform .25s ease, background-color .25s ease;
}
.sidebar-brand{
  display:flex;align-items:center;gap:10px;
  padding:22px 20px;border-bottom:1px solid var(--border);
}
.sidebar-brand img{height:32px}
.sidebar-brand span{font-weight:800;font-size:17px;letter-spacing:-.2px}
.sidebar-nav{flex:1;overflow-y:auto;padding:14px 12px}
.sidebar-nav .nav-section-label{
  font-size:11px;text-transform:uppercase;letter-spacing:.06em;
  color:var(--text-muted);font-weight:700;margin:16px 10px 8px;
}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:var(--radius-sm);
  color:var(--text-secondary);font-weight:500;font-size:14.5px;
  margin-bottom:2px;cursor:pointer;transition:background-color .15s ease,color .15s ease;
}
.nav-link i{font-size:17px;width:20px;text-align:center}
.nav-link:hover{background:var(--sidebar-hover);color:var(--text-primary)}
.nav-link.active{background:var(--sidebar-active);color:var(--primary-blue);font-weight:600}
[data-theme="dark"] .nav-link.active{color:#5EA8FF}
.sidebar-footer{padding:14px 12px;border-top:1px solid var(--border)}

.main-wrap{margin-left:250px;flex:1;min-width:0;display:flex;flex-direction:column}

/* ---------------- Header ---------------- */
.bank-header{
  background:linear-gradient(135deg,var(--header-grad-start),var(--header-grad-end));
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,.06) 0, transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(255,255,255,.05) 0, transparent 40%),
    linear-gradient(135deg,var(--header-grad-start),var(--header-grad-end));
  color:#fff;
  padding:28px 32px 78px;
  position:relative;
}
.header-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.header-menu-btn{
  display:none;background:rgba(255,255,255,.15);border:none;color:#fff;
  width:38px;height:38px;border-radius:10px;align-items:center;justify-content:center;font-size:18px;
}
.header-greeting h1{font-size:28px;font-weight:800;margin:2px 0 4px;letter-spacing:-.5px}
.header-greeting p{margin:0;opacity:.85;font-size:14px;font-weight:500}
.header-actions-top{display:flex;align-items:center;gap:14px}
.avatar-circle{
  width:44px;height:44px;border-radius:50%;object-fit:cover;
  border:2px solid rgba(255,255,255,.6);
}
.theme-toggle-btn{
  background:rgba(255,255,255,.15);border:none;color:#fff;
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:16px;transition:background .15s ease;
}
.theme-toggle-btn:hover{background:rgba(255,255,255,.28)}

.accounts-carousel{margin-top:22px}
.accounts-carousel-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.accounts-carousel-label{font-size:14px;font-weight:600;opacity:.9}
.accounts-view-all{font-size:12.5px;font-weight:600;color:#fff;opacity:.85}
.accounts-view-all:hover{opacity:1;text-decoration:underline}
.account-strip{display:flex;gap:14px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory;scroll-behavior:smooth}
.account-strip::-webkit-scrollbar{display:none}
.account-chip{
  scroll-snap-align:start;
  flex:0 0 auto;min-width:230px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-md);
  padding:16px 18px;
  backdrop-filter:blur(6px);
  cursor:pointer;
  transition:background .15s ease, transform .15s ease;
}
.account-chip:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.account-chip .acc-name{font-weight:700;font-size:14.5px}
.account-chip .acc-number{font-size:12px;opacity:.75;margin-top:1px}
.account-chip .acc-balance{font-size:21px;font-weight:800;margin-top:12px}
.account-chip .acc-balance-label{font-size:11px;opacity:.75;text-transform:uppercase;letter-spacing:.04em}

.quick-actions-row{display:flex;flex-wrap:nowrap;gap:12px;margin-top:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:2px}
.quick-actions-row::-webkit-scrollbar{display:none}
.quick-action-btn{
  scroll-snap-align:start;
  flex:0 0 auto;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-md);
  color:#fff;
  padding:14px 10px;
  width:88px;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:12px;font-weight:600;text-align:center;line-height:1.25;
  cursor:pointer;
  transition:background .15s ease, transform .15s ease;
  position:relative;
}
.quick-action-btn:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.quick-action-btn i{font-size:19px}
.quick-action-badge{
  position:absolute;top:8px;right:10px;background:var(--danger);color:#fff;
  font-size:10px;font-weight:700;min-width:16px;height:16px;border-radius:99px;
  display:flex;align-items:center;justify-content:center;padding:0 3px;
}

/* ---------------- Content / widgets ---------------- */
.content-area{padding:0 32px 40px;margin-top:-52px}
.widget-grid{
  display:grid;grid-template-columns:repeat(12,1fr);gap:20px;
  max-width:1400px;
}
.col-span-12{grid-column:span 12}
.col-span-8{grid-column:span 8}
.col-span-7{grid-column:span 7}
.col-span-6{grid-column:span 6}
.col-span-5{grid-column:span 5}
.col-span-4{grid-column:span 4}
.col-span-3{grid-column:span 3}

.card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:22px;
  animation:fadeSlideUp .35s ease both;
  transition:background-color .25s ease, border-color .25s ease, box-shadow .15s ease, transform .15s ease;
}
.card.hoverable:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.card-header h2{font-size:16.5px;font-weight:700;margin:0}
.card-header .card-more{
  color:var(--text-muted);cursor:pointer;width:28px;height:28px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
}
.card-header .card-more:hover{background:var(--sidebar-hover)}

@keyframes fadeSlideUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

.stat-card{padding:20px 22px}
.stat-card .stat-icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:19px;margin-bottom:14px;
}
.stat-card .stat-value{font-size:26px;font-weight:800;letter-spacing:-.3px}
.stat-card .stat-label{font-size:13px;color:var(--text-secondary);margin-top:2px;font-weight:500}
.stat-card .stat-delta{font-size:12.5px;font-weight:600;margin-top:8px}
.stat-icon.blue{background:rgba(29,78,216,.1);color:var(--accent-blue)}
.stat-icon.green{background:rgba(22,163,74,.1);color:var(--success)}
.stat-icon.amber{background:rgba(245,158,11,.1);color:var(--warning)}
.stat-icon.red{background:rgba(220,38,38,.1);color:var(--danger)}

/* Transaction rows */
.txn-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 0;border-bottom:1px solid var(--border);
}
.txn-row:last-child{border-bottom:none}
.txn-left{display:flex;align-items:center;gap:12px;min-width:0}
.txn-icon{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:var(--card-bg-secondary);color:var(--accent-blue);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  border:1px solid var(--border);
}
.txn-info{min-width:0}
.txn-info .txn-title{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.txn-info .txn-sub{font-size:12.5px;color:var(--text-muted);margin-top:1px}
.txn-amount{font-weight:700;font-size:14.5px;white-space:nowrap}
.txn-amount.credit{color:var(--success)}
.txn-amount.debit{color:var(--text-primary)}

.view-all-btn{
  display:block;text-align:center;width:100%;padding:11px;margin-top:14px;
  background:var(--card-bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--accent-blue);font-weight:600;font-size:14px;cursor:pointer;
  transition:background .15s ease;
}
.view-all-btn:hover{background:var(--sidebar-hover)}

/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;
  font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;
}
.badge-success{background:rgba(22,163,74,.12);color:var(--success)}
.badge-warning{background:rgba(245,158,11,.12);color:var(--warning)}
.badge-danger{background:rgba(220,38,38,.12);color:var(--danger)}
.badge-info{background:rgba(37,99,235,.12);color:var(--info)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;
  cursor:pointer;border:1px solid transparent;transition:filter .15s ease, transform .1s ease;
  position:relative;overflow:hidden;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--primary-blue);color:#fff}
.btn-primary:hover{filter:brightness(1.08)}
.btn-outline{background:transparent;border-color:var(--border);color:var(--text-primary)}
.btn-outline:hover{background:var(--sidebar-hover)}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:7px 14px;font-size:13px}
.btn-block{width:100%}

/* Ripple */
.ripple{position:absolute;border-radius:50%;transform:scale(0);animation:ripple .5s linear;background:rgba(255,255,255,.5);pointer-events:none}
@keyframes ripple{to{transform:scale(3);opacity:0}}

/* Forms */
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px}
.form-control{
  width:100%;padding:11px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--card-bg);color:var(--text-primary);font-family:var(--font);font-size:14.5px;
  transition:border-color .15s ease, box-shadow .15s ease;
}
.form-control:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px rgba(29,78,216,.12)}
select.form-control{cursor:pointer}
.form-hint{font-size:12px;color:var(--text-muted);margin-top:5px}
.input-icon-group{position:relative}
.input-icon-group i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted)}
.input-icon-group .form-control{padding-left:40px}
.form-switch-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border)}
.form-switch-row:last-child{border-bottom:none}
.switch{position:relative;display:inline-block;width:42px;height:24px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.switch .slider{position:absolute;inset:0;background:var(--border);border-radius:999px;cursor:pointer;transition:.2s}
.switch .slider:before{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked + .slider{background:var(--primary-blue)}
.switch input:checked + .slider:before{transform:translateX(18px)}

/* Tables */
.table-wrap{overflow-x:auto}
table.data-table{width:100%;border-collapse:collapse;font-size:14px}
table.data-table th{
  text-align:left;padding:10px 14px;color:var(--text-muted);font-weight:600;font-size:12px;
  text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--border);white-space:nowrap;
}
table.data-table td{padding:13px 14px;border-bottom:1px solid var(--border);white-space:nowrap}
table.data-table tbody tr{transition:background-color .1s ease}
table.data-table tbody tr:hover{background:var(--card-bg-secondary)}

/* Skeleton loading */
.skeleton{background:linear-gradient(90deg,var(--border) 25%,var(--card-bg-secondary) 37%,var(--border) 63%);background-size:400% 100%;animation:skeleton-loading 1.4s ease infinite;border-radius:8px}
@keyframes skeleton-loading{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* Login page */
.login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--header-grad-start),var(--header-grad-end));position:relative;overflow:hidden;padding:20px}
.login-shell::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(255,255,255,.08) 0,transparent 40%),radial-gradient(circle at 80% 75%,rgba(255,255,255,.07) 0,transparent 45%)}
.login-card{
  position:relative;background:var(--card-bg);border-radius:20px;padding:40px 36px;width:100%;max-width:400px;
  box-shadow:0 20px 60px rgba(0,0,0,.25);animation:fadeSlideUp .5s ease both;
}
.login-card-wide{max-width:760px}
.enroll-section-label{text-transform:uppercase;font-size:11.5px;letter-spacing:.04em;color:var(--text-muted);font-weight:700;margin:22px 0 4px}
.enroll-section-label:first-of-type{margin-top:0}
.login-logo{display:flex;flex-direction:column;align-items:center;margin-bottom:22px}
.login-logo img{height:44px;margin-bottom:14px}
.login-logo h1{font-size:20px;font-weight:800;margin:0}
.login-logo p{font-size:13px;color:var(--text-muted);margin:4px 0 0}
.login-btn{position:relative}
.login-btn .spinner{display:none;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}
.login-btn.loading .spinner{display:inline-block}
.login-btn.loading .btn-text{opacity:.6}
@keyframes spin{to{transform:rotate(360deg)}}
.demo-hint{background:var(--card-bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;font-size:12.5px;color:var(--text-secondary);margin-top:18px;line-height:1.6}
.login-error{background:rgba(220,38,38,.1);color:var(--danger);border-radius:var(--radius-sm);padding:10px 14px;font-size:13.5px;margin-bottom:16px;display:none}
.login-tabs{display:flex;background:var(--card-bg-secondary);border-radius:var(--radius-sm);padding:4px;margin-bottom:22px}
.login-tab{flex:1;text-align:center;padding:9px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--text-secondary);cursor:pointer}
.login-tab.active{background:var(--card-bg);color:var(--primary-blue);box-shadow:var(--shadow-card)}

/* Notification / toast */
.toast-stack{position:fixed;top:20px;right:20px;z-index:3000;display:flex;flex-direction:column;gap:10px}
.toast{
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 16px;min-width:280px;box-shadow:var(--shadow-hover);
  animation:toastSlide .3s ease both;display:flex;gap:10px;align-items:flex-start;
}
@keyframes toastSlide{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}
.toast .toast-icon{color:var(--info);font-size:16px;margin-top:2px}
.toast .toast-title{font-weight:700;font-size:13.5px}
.toast .toast-body{font-size:12.5px;color:var(--text-secondary);margin-top:2px}
.demo-badge{display:inline-block;background:rgba(29,78,216,.1);color:var(--accent-blue);font-size:10.5px;font-weight:700;padding:2px 7px;border-radius:6px;text-transform:uppercase;letter-spacing:.04em;margin-left:6px}

/* Page header (inner pages) */
.page-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.page-header h1{font-size:22px;font-weight:800;margin:0}
.page-header p{margin:4px 0 0;color:var(--text-secondary);font-size:14px}

.mobile-topbar{display:none}

/* Utility */
.text-muted{color:var(--text-muted)}
.text-secondary{color:var(--text-secondary)}
.text-success{color:var(--success)}
.text-danger{color:var(--danger)}
.flex{display:flex}
.items-center{align-items:center}
.justify-between{justify-content:space-between}
.gap-2{gap:8px}
.gap-3{gap:12px}
.mt-3{margin-top:12px}
.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}
.empty-state i{font-size:34px;margin-bottom:10px;display:block}

/* Overlay for mobile sidebar */
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:999}
.sidebar-overlay.show{display:block}

/* ---------------- Responsive ---------------- */
@media (max-width: 1100px){
  .col-span-8,.col-span-7{grid-column:span 12}
  .col-span-4,.col-span-5{grid-column:span 6}
}
@media (max-width: 900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.show{transform:translateX(0)}
  .main-wrap{margin-left:0}
  .header-menu-btn{display:flex}
  .col-span-3,.col-span-4,.col-span-5,.col-span-6{grid-column:span 12}
  .content-area{padding:0 16px 32px}
  .bank-header{padding:20px 16px 70px}
  .quick-action-btn{width:82px}
}
@media (max-width: 560px){
  .header-greeting h1{font-size:22px}
  .account-chip{min-width:200px}
  .login-card{padding:30px 22px}
}