/* ─── UPI Payment Admin — Main Stylesheet ───────────────────────────────────
   Color palette: Deep navy sidebar + violet accent + clean white cards
   ─────────────────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg:          #0f1117;
  --bg2:         #16181f;
  --sidebar:     #0d0f14;
  --card:        #1e2030;
  --card-hover:  #252840;
  --border:      #2a2d3e;
  --accent:      #6c63ff;
  --accent2:     #a78bfa;
  --success:     #10b981;
  --warning:     #f59e0b;
  --danger:      #ef4444;
  --info:        #3b82f6;
  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-dim:    #64748b;
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,.35);
  --shadow-sm:   0 2px 8px rgba(0,0,0,.25);
  --transition:  .2s ease;
  --sidebar-w:   260px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─── Layout ─────────────────────────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

/* ─── Sidebar ────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}
.sidebar-logo {
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-logo .logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.sidebar-logo .logo-text { font-size: 16px; font-weight: 700; color: var(--text); }
.sidebar-logo .logo-sub  { font-size: 11px; color: var(--text-muted); }

.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.nav-section-title {
  font-size: 10px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-dim); padding: 12px 24px 6px;
}
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 24px; color: var(--text-muted);
  text-decoration: none; font-size: 13.5px; font-weight: 500;
  border-left: 3px solid transparent;
  transition: all var(--transition);
}
.nav-item:hover  { background: rgba(108,99,255,.08); color: var(--text); }
.nav-item.active { background: rgba(108,99,255,.15); color: var(--accent2); border-left-color: var(--accent); }
.nav-item .icon  { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-item .badge {
  margin-left: auto; background: var(--accent); color: #fff;
  font-size: 10px; font-weight: 700; padding: 1px 7px; border-radius: 20px;
}

.sidebar-footer { padding: 16px 24px; border-top: 1px solid var(--border); }
.admin-info { display: flex; align-items: center; gap: 10px; }
.admin-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; color: #fff; flex-shrink: 0;
}
.admin-name  { font-weight: 600; font-size: 13px; color: var(--text); }
.admin-role  { font-size: 11px; color: var(--text-muted); }
.logout-btn  { margin-left: auto; color: var(--text-dim); font-size: 16px; text-decoration: none; transition: color .2s; }
.logout-btn:hover { color: var(--danger); }

/* ─── Main Content ───────────────────────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  height: 64px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 28px;
  position: sticky; top: 0; z-index: 50;
  gap: 16px;
}
.topbar-title { font-size: 18px; font-weight: 700; flex: 1; }
.topbar-actions { display: flex; gap: 10px; align-items: center; }

.content { padding: 28px; flex: 1; }

/* ─── Page Header ────────────────────────────────────────────────────────────── */
.page-header { margin-bottom: 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.page-title  { font-size: 22px; font-weight: 700; }
.page-sub    { color: var(--text-muted); font-size: 13px; margin-top: 2px; }

/* ─── Stat Cards ─────────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex; align-items: flex-start; gap: 16px;
  transition: all var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.stat-icon {
  width: 46px; height: 46px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  flex-shrink: 0;
}
.stat-icon.purple { background: rgba(108,99,255,.18); }
.stat-icon.green  { background: rgba(16,185,129,.18); }
.stat-icon.red    { background: rgba(239,68,68,.18); }
.stat-icon.yellow { background: rgba(245,158,11,.18); }
.stat-icon.blue   { background: rgba(59,130,246,.18); }
.stat-value { font-size: 26px; font-weight: 700; line-height: 1.1; }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 3px; font-weight: 500; }
.stat-change { font-size: 11px; margin-top: 6px; color: var(--text-dim); }
.stat-change.up   { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ─── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 22px;
}
.card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.card-title { font-size: 15px; font-weight: 600; }
.card-body  { padding: 22px; }

/* ─── Tables ─────────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: rgba(108,99,255,.07);
  padding: 12px 14px;
  text-align: left; font-weight: 600; font-size: 11px;
  text-transform: uppercase; letter-spacing: .05em;
  color: var(--text-muted); white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
tbody td { padding: 13px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(108,99,255,.04); }

/* ─── Badges ─────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600; letter-spacing: .02em;
}
.badge::before { content:''; width:6px; height:6px; border-radius:50%; background: currentColor; opacity:.8; }
.badge-success { background: rgba(16,185,129,.15); color: var(--success); }
.badge-danger  { background: rgba(239,68,68,.15);  color: var(--danger);  }
.badge-warning { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-info    { background: rgba(59,130,246,.15); color: var(--info);    }
.badge-purple  { background: rgba(108,99,255,.15); color: var(--accent2); }
.badge-muted   { background: rgba(148,163,184,.12);color: var(--text-muted); }

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; text-decoration: none;
  transition: all var(--transition); white-space: nowrap;
  font-family: inherit;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 12px rgba(108,99,255,.35);
}
.btn-primary:hover { background: #7c73ff; box-shadow: 0 4px 20px rgba(108,99,255,.5); }
.btn-ghost  { background: transparent; color: var(--text-muted); border-color: var(--border); }
.btn-ghost:hover  { background: rgba(108,99,255,.1); color: var(--text); border-color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-success{ background: var(--success); color: #fff; }
.btn-success:hover{ background: #059669; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-icon { padding: 7px; width: 34px; height: 34px; justify-content: center; }

/* ─── Forms ──────────────────────────────────────────────────────────────────── */
.form-group  { margin-bottom: 18px; }
.form-label  { display: block; font-size: 12.5px; font-weight: 600; color: var(--text-muted); margin-bottom: 7px; }
.form-label .req { color: var(--danger); margin-left: 2px; }
.form-control {
  width: 100%; padding: 10px 14px;
  background: var(--bg); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: inherit; font-size: 13.5px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(108,99,255,.15); }
.form-control::placeholder { color: var(--text-dim); }
.input-group { display: flex; align-items: stretch; }
.input-prefix, .input-suffix {
  padding: 10px 14px;
  background: rgba(108,99,255,.1);
  border: 1.5px solid var(--border);
  color: var(--text-muted); font-size: 13px; white-space: nowrap;
  display: flex; align-items: center;
}
.input-prefix { border-right: none; border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.input-suffix { border-left: none;  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.input-group .form-control { border-radius: 0; }
.input-group .form-control:first-child   { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.input-group .form-control:last-child    { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-check { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.form-check input { accent-color: var(--accent); width: 16px; height: 16px; cursor: pointer; }
.form-check label { cursor: pointer; color: var(--text-muted); font-size: 13px; }
.form-hint { color: var(--text-dim); font-size: 11.5px; margin-top: 5px; }
.form-error { color: var(--danger); font-size: 11.5px; margin-top: 5px; }

/* Notes (key-value) ─────────────────────────────────────── */
.notes-container .note-row { display: flex; gap: 8px; margin-bottom: 8px; align-items: center; }
.notes-container .note-row .form-control { flex: 1; }
.note-remove { background: transparent; border: none; color: var(--text-dim); cursor: pointer; font-size: 18px; transition: color .2s; padding: 0 4px; }
.note-remove:hover { color: var(--danger); }
.add-note-btn { background: transparent; border: 1.5px dashed var(--border); color: var(--accent2); padding: 8px 14px; border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; font-weight: 600; transition: all .2s; margin-top: 4px; }
.add-note-btn:hover { border-color: var(--accent); background: rgba(108,99,255,.08); }

/* ─── Alerts ─────────────────────────────────────────────────────────────────── */
.alert { padding: 14px 18px; border-radius: var(--radius-sm); font-size: 13.5px; margin-bottom: 18px; border-left: 4px solid; }
.alert-success { background: rgba(16,185,129,.12); border-color: var(--success); color: #6ee7b7; }
.alert-danger  { background: rgba(239,68,68,.12);  border-color: var(--danger);  color: #fca5a5; }
.alert-warning { background: rgba(245,158,11,.12); border-color: var(--warning); color: #fcd34d; }
.alert-info    { background: rgba(59,130,246,.12); border-color: var(--info);    color: #93c5fd; }

/* ─── Charts ─────────────────────────────────────────────────────────────────── */
.chart-wrap { position: relative; min-height: 240px; }

/* ─── Modal ──────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.65);
  display: flex; align-items: center; justify-content: center; z-index: 200;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); width: min(560px, 95vw);
  max-height: 90vh; overflow-y: auto;
  transform: translateY(20px); transition: transform .25s;
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header { padding: 20px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-size: 16px; font-weight: 700; }
.modal-close { background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-size: 22px; line-height: 1; transition: color .2s; }
.modal-close:hover { color: var(--danger); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* ─── Filters / Search Bar ───────────────────────────────────────────────────── */
.filters-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; align-items: center; }
.filters-bar .form-control { max-width: 220px; }
.filters-bar select.form-control { cursor: pointer; }

/* ─── Pagination ─────────────────────────────────────────────────────────────── */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.page-btn {
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--card); border: 1px solid var(--border);
  color: var(--text-muted); font-size: 13px; font-weight: 600;
  cursor: pointer; text-decoration: none; transition: all .2s;
}
.page-btn:hover, .page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn.disabled { opacity: .4; pointer-events: none; }

/* ─── Timeline ───────────────────────────────────────────────────────────────── */
.timeline { position: relative; padding-left: 24px; }
.timeline::before { content:''; position:absolute; left:8px; top:0; bottom:0; width:2px; background: var(--border); }
.tl-item { position: relative; padding-bottom: 20px; }
.tl-dot {
  position: absolute; left: -22px; top: 3px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg);
}
.tl-dot.green  { background: var(--success); }
.tl-dot.red    { background: var(--danger); }
.tl-dot.yellow { background: var(--warning); }
.tl-time  { font-size: 11px; color: var(--text-dim); margin-bottom: 3px; }
.tl-label { font-size: 13px; font-weight: 600; }
.tl-meta  { font-size: 12px; color: var(--text-muted); margin-top: 3px; }

/* ─── Copy tooltip ───────────────────────────────────────────────────────────── */
.copy-btn { cursor: pointer; font-size: 14px; color: var(--text-dim); transition: color .2s; background: none; border: none; }
.copy-btn:hover { color: var(--accent2); }
.copied { color: var(--success) !important; }

/* ─── Settings tabs ─────────────────────────────────────────────────────────── */
.settings-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.settings-tab {
  padding: 10px 18px; cursor: pointer; font-size: 13px; font-weight: 600;
  color: var(--text-muted); border-bottom: 2px solid transparent; transition: all .2s;
}
.settings-tab:hover  { color: var(--text); }
.settings-tab.active { color: var(--accent2); border-bottom-color: var(--accent); }

/* ─── Login page ────────────────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  background-image: radial-gradient(ellipse at 30% 20%, rgba(108,99,255,.12) 0%, transparent 50%),
                    radial-gradient(ellipse at 70% 80%, rgba(167,139,250,.08) 0%, transparent 50%);
}
.login-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px 36px;
  width: min(420px, 95vw);
  box-shadow: 0 8px 48px rgba(0,0,0,.4);
}
.login-logo { text-align: center; margin-bottom: 30px; }
.login-logo .logo-icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; color: #fff; margin: 0 auto 14px;
}
.login-logo h2 { font-size: 22px; font-weight: 700; }
.login-logo p  { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

/* ─── Mobile ─────────────────────────────────────────────────────────────────── */
.hamburger { display: none; background: none; border: none; color: var(--text); cursor: pointer; font-size: 22px; }

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .hamburger { display: block; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
  .content { padding: 16px; }
}

/* ─── Misc utilities ─────────────────────────────────────────────────────────── */
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.ml-auto { margin-left: auto; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 12px; }
.font-mono { font-family: 'Courier New', monospace; font-size: 12px; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; display: inline-block; vertical-align: middle; }
.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 42px; margin-bottom: 14px; opacity: .5; }
.empty-state p { margin-bottom: 16px; }
.separator { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.spinner { width: 22px; height: 22px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }