/* ========== Tokens ========== */
:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-2: #f9fafb;
  --text: #111827;
  --text-2: #4b5563;
  --muted: #6b7280;
  --border: #e5e7eb;
  --border-strong: #d1d5db;

  --primary: #4f46e5;
  --primary-600: #4338ca;
  --primary-50: #eef2ff;
  --primary-100: #e0e7ff;

  --success: #059669;
  --success-50: #ecfdf5;
  --danger: #dc2626;
  --danger-50: #fef2f2;
  --warning: #d97706;
  --warning-50: #fffbeb;

  --sidebar-bg: #111827;
  --sidebar-text: #9ca3af;
  --sidebar-text-strong: #f9fafb;
  --sidebar-hover: #1f2937;
  --sidebar-width: 264px;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.06), 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.18);

  --tap: 44px;
  --gutter: 16px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ========== Base ========== */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-600); }

h1, h2, h3 { margin: 0; letter-spacing: -0.01em; }
h1 { font-size: 1.3rem; font-weight: 700; }
h2 { font-size: 1.05rem; font-weight: 600; }
p { margin: 0 0 8px; }

.icon { flex-shrink: 0; vertical-align: middle; }
.muted { color: var(--muted); }
.text-warning { color: var(--warning); font-weight: 600; }

:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 6px; }

/* ========== App layout (mobile first) ========== */
.layout-app { min-height: 100vh; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 40;
  width: min(84vw, var(--sidebar-width));
  display: flex;
  flex-direction: column;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  padding-bottom: var(--safe-bottom);
}
.sidebar-open .sidebar { transform: translateX(0); box-shadow: var(--shadow-lg); }

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: rgba(17, 24, 39, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.sidebar-open .backdrop { opacity: 1; pointer-events: auto; }
.sidebar-open { overflow: hidden; }

.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 12px 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--sidebar-text-strong);
}
.brand:hover { color: var(--sidebar-text-strong); }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.nav { flex: 1; overflow-y: auto; padding: 8px 12px; }
.nav-section {
  margin: 18px 10px 6px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6b7280;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: var(--tap);
  padding: 0 12px;
  margin-bottom: 2px;
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-weight: 500;
}
.nav-link:hover { background: var(--sidebar-hover); color: var(--sidebar-text-strong); }
.nav-link.active { background: rgba(99, 102, 241, 0.18); color: #fff; }
.nav-link.active .icon { color: #a5b4fc; }
.nav-count {
  margin-left: auto;
  min-width: 22px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--sidebar-hover);
}
.sidebar-user .avatar { background: #374151; color: #e5e7eb; }
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name { color: var(--sidebar-text-strong); font-weight: 600; font-size: 0.9rem; }
.sidebar-user-name, .sidebar-user-email { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-email { font-size: 0.75rem; }
.sidebar-user .icon-btn, .sidebar-close { color: var(--sidebar-text); }
.sidebar-user .icon-btn:hover, .sidebar-close:hover { background: #374151; color: #fff; }

.main { min-width: 0; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 64px;
  padding: 10px var(--gutter);
  background: rgba(245, 246, 250, 0.88);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
}
.topbar-title { flex: 1; min-width: 0; }
.topbar-title h1 { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.subtitle { margin: 0; color: var(--muted); font-size: 0.85rem; }
.topbar-actions { display: flex; gap: 8px; }
.topbar-actions .btn { display: none; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
}

.content {
  max-width: 1100px;
  padding: 8px var(--gutter) calc(96px + var(--safe-bottom));
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--tap);
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
}
.btn:active { transform: scale(0.98); }
.btn-sm { min-height: 36px; padding: 0 12px; font-size: 0.85rem; }
.btn-block { width: 100%; }

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 1px 2px rgba(79, 70, 229, 0.3); }
.btn-primary:hover { background: var(--primary-600); color: #fff; }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface-2); color: var(--text); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: rgba(17, 24, 39, 0.05); color: var(--text); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; color: #fff; }
.btn-danger-soft { background: var(--danger-50); color: var(--danger); border-color: #fecaca; }
.btn-danger-soft:hover { background: #fee2e2; color: #b91c1c; }

.btn-google {
  width: 100%;
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
  min-height: 48px;
}
.btn-google:hover { background: var(--surface-2); color: var(--text); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: var(--tap);
  height: var(--tap);
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
}
.icon-btn:hover { background: rgba(17, 24, 39, 0.06); color: var(--text); }

.btn-group { display: flex; gap: 6px; }
.btn-stack { display: grid; gap: 8px; }

.fab {
  position: fixed;
  right: 18px;
  bottom: calc(20px + var(--safe-bottom));
  z-index: 15;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}
.fab:hover { color: #fff; background: var(--primary-600); }

.hide-sm { display: none; }

/* ========== Cards & sections ========== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 18px;
}
.card-title { margin-bottom: 14px; }
.section { margin-top: 24px; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.stack { display: grid; gap: 12px; }
.grid-2 { display: grid; gap: 16px; }

.empty-state { display: grid; justify-items: center; gap: 8px; padding: 36px 20px; text-align: center; }
.empty-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-50);
  color: var(--primary);
}

/* ========== Balance cards ========== */
.balances {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 78%;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  margin: 0 calc(-1 * var(--gutter));
  padding: 4px var(--gutter) 8px;
  scrollbar-width: none;
}
.balances::-webkit-scrollbar { display: none; }

.balance {
  --accent: var(--primary);
  --accent-soft: var(--primary-50);
  scroll-snap-align: start;
  display: grid;
  gap: 10px;
}
.accent-1 { --accent: #0891b2; --accent-soft: #ecfeff; }
.accent-2 { --accent: #db2777; --accent-soft: #fdf2f8; }
.accent-3 { --accent: #ea580c; --accent-soft: #fff7ed; }
.balance.negative { --accent: var(--danger); --accent-soft: var(--danger-50); }

.balance-head { display: flex; align-items: center; gap: 10px; }
.balance-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
}
.balance-type { font-weight: 600; }
.balance-value { display: flex; align-items: baseline; gap: 6px; }
.balance-remaining { font-size: 2.1rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1; color: var(--text); }
.balance.negative .balance-remaining { color: var(--danger); }
.balance-of { color: var(--muted); font-size: 0.85rem; }
.balance-foot { color: var(--muted); font-size: 0.8rem; }

.progress { height: 8px; border-radius: 999px; background: var(--accent-soft); overflow: hidden; }
.progress-bar { height: 100%; border-radius: inherit; background: var(--accent); transition: width 0.4s ease; }

/* ========== Lists ========== */
.list { list-style: none; margin: 0; padding: 0; overflow: hidden; }
.list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.list-item:last-child { border-bottom: none; }
.list-main { flex: 1; min-width: 0; }
.list-title { display: block; font-weight: 600; color: var(--text); }
.list-sub { color: var(--muted); font-size: 0.82rem; overflow: hidden; text-overflow: ellipsis; }
.list-side { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.link-plain { color: var(--text); }
.link-plain:hover { color: var(--primary); }

.list-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--muted);
}
.list-icon.status-pending { background: var(--warning-50); color: var(--warning); }
.list-icon.status-approved { background: var(--success-50); color: var(--success); }
.list-icon.status-denied { background: var(--danger-50); color: var(--danger); }

.note {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-top: 6px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 0.85rem;
}
.note .icon { margin-top: 3px; }

/* ========== Avatars & badges ========== */
.avatar {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--primary-100);
  color: var(--primary-600);
  font-weight: 700;
}
.avatar-sm { width: 36px; height: 36px; font-size: 0.9rem; }
.avatar-lg { width: 52px; height: 52px; font-size: 1.25rem; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: capitalize;
  white-space: nowrap;
  background: #f3f4f6;
  color: var(--text-2);
}
.badge-dot { width: 6px; height: 6px; border-radius: 999px; background: currentColor; }
.badge-pending { background: var(--warning-50); color: #b45309; }
.badge-approved { background: var(--success-50); color: #047857; }
.badge-denied, .badge-rejected, .badge-deactivated { background: var(--danger-50); color: #b91c1c; }
.badge-cancelled { background: #f3f4f6; color: var(--muted); }
.badge-admin { background: var(--primary-50); color: var(--primary); text-transform: none; padding: 1px 8px; }

/* ========== Tabs ========== */
.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  font-weight: 500;
  font-size: 0.875rem;
  white-space: nowrap;
}
.tab:hover { color: var(--text); border-color: var(--border-strong); }
.tab.active { background: var(--text); border-color: var(--text); color: #fff; }
.tab-count {
  padding: 0 7px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
}

/* ========== Request cards (admin) ========== */
.request-card { display: grid; gap: 14px; }
.request-top { display: flex; align-items: center; gap: 12px; }
.request-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.meta { display: grid; gap: 2px; min-width: 0; }
.meta-label { font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.meta-value { font-weight: 500; font-size: 0.9rem; }

.inline-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--warning-50);
  color: #92400e;
  font-size: 0.85rem;
  font-weight: 500;
}

.decision { display: grid; gap: 10px; }
.decision-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* ========== Forms ========== */
.field { display: grid; gap: 6px; margin: 0 0 16px; border: 0; padding: 0; min-width: 0; }
.label { display: block; font-weight: 600; font-size: 0.9rem; color: var(--text); padding: 0; margin-bottom: 6px; }
.field .label { margin-bottom: 0; }
.label-sm { font-size: 0.75rem; font-weight: 600; color: var(--muted); }
.hint { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 0.82rem; margin: 0 0 12px; }

.input {
  width: 100%;
  min-height: var(--tap);
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 16px; /* prevents iOS zoom on focus */
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-100); }
.input-sm { max-width: 120px; }

.form-card { max-width: 640px; }
.field-row { display: grid; gap: 0 12px; }
.form-actions {
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  margin-top: 20px;
}
.form-actions .btn { width: 100%; }

.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.choice { position: relative; cursor: pointer; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice-body {
  display: grid;
  gap: 2px;
  height: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.choice-title { font-weight: 600; }
.choice-sub { font-size: 0.78rem; color: var(--muted); }
.choice:hover .choice-body { border-color: var(--border-strong); }
.choice input:checked + .choice-body { border-color: var(--primary); background: var(--primary-50); box-shadow: 0 0 0 3px var(--primary-100); }
.choice input:focus-visible + .choice-body { outline: 2px solid var(--primary); outline-offset: 2px; }

.allowance-list { display: grid; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.allowance-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.allowance-row:last-child { border-bottom: none; }
.allowance-row label { display: grid; font-weight: 500; }

.inline-form { display: grid; gap: 10px; }
.inline-form .input-sm { max-width: none; }

.type-form { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 10px; width: 100%; }
.type-form .field { margin: 0; }
.type-form .field:first-of-type { grid-column: 1 / -1; }

.switch { display: inline-flex; align-items: center; gap: 8px; min-height: var(--tap); cursor: pointer; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch-track {
  position: relative;
  width: 40px;
  height: 24px;
  border-radius: 999px;
  background: var(--border-strong);
  transition: background 0.2s ease;
}
.switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: #fff;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease;
}
.switch input:checked + .switch-track { background: var(--success); }
.switch input:checked + .switch-track .switch-thumb { transform: translateX(16px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--primary); outline-offset: 2px; }
.switch-label { font-size: 0.85rem; font-weight: 500; color: var(--text-2); }

.profile { display: flex; align-items: center; gap: 14px; }

/* ========== Flash messages ========== */
.flashes { display: grid; gap: 8px; margin-bottom: 16px; }
.flash {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 500;
}
.flash .icon { margin-top: 1px; }
.flash-success { background: var(--success-50); border-color: #a7f3d0; color: #065f46; }
.flash-error { background: var(--danger-50); border-color: #fecaca; color: #991b1b; }
.flash-warning { background: var(--warning-50); border-color: #fde68a; color: #92400e; }
.flash-message, .flash-info { background: var(--primary-50); border-color: var(--primary-100); color: #3730a3; }

/* ========== Auth layout ========== */
.layout-auth {
  min-height: 100vh;
  background:
    radial-gradient(1000px 500px at 10% -10%, #e0e7ff 0%, transparent 60%),
    radial-gradient(800px 400px at 110% 10%, #fae8ff 0%, transparent 55%),
    var(--bg);
}
.auth-wrap {
  display: grid;
  align-content: center;
  gap: 16px;
  max-width: 420px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 32px var(--gutter);
}
.auth-brand { display: flex; align-items: center; justify-content: center; gap: 10px; font-weight: 700; font-size: 1.2rem; }
.auth-card { display: grid; gap: 10px; padding: 28px 22px; text-align: center; box-shadow: var(--shadow-lg); border: none; }
.auth-card h1 { font-size: 1.4rem; }
.auth-card .btn-google { margin-top: 8px; }
.auth-foot { font-size: 0.82rem; margin: 6px 0 0; }
.auth-logout { text-align: center; }
.auth-logout .btn { font-size: 0.85rem; font-weight: 500; }

.status-icon {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  margin: 0 auto 4px;
  border-radius: 18px;
}
.status-icon-pending { background: var(--warning-50); color: var(--warning); }
.status-icon-blocked { background: var(--danger-50); color: var(--danger); }

/* ========== Larger phones / small tablets ========== */
@media (min-width: 560px) {
  .balances {
    grid-auto-flow: row;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    overflow: visible;
    margin: 0;
    padding: 0;
  }
  .hide-sm { display: inline; }
  .topbar-actions .btn { display: inline-flex; }
  .fab { display: none; }
  .content { padding-bottom: 40px; }
  .field-row { grid-template-columns: 1fr 1fr; }
  .form-actions { flex-direction: row; justify-content: flex-end; }
  .form-actions .btn { width: auto; }
  .choice-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .request-meta { grid-template-columns: repeat(4, 1fr); }
  .decision { grid-template-columns: 1fr auto; align-items: center; }
  .decision-buttons { display: flex; }
  .list-side { flex-direction: row; align-items: center; }
  .inline-form { grid-template-columns: 1fr 140px auto; }
  .type-form { grid-template-columns: 1fr 120px auto auto; }
  .type-form .field:first-of-type { grid-column: auto; }
  .auth-card { padding: 36px 32px; }
}

/* ========== Desktop: persistent sidebar ========== */
@media (min-width: 960px) {
  :root { --gutter: 32px; }

  .sidebar { transform: none; width: var(--sidebar-width); box-shadow: none; }
  .sidebar-close, .menu-btn, .backdrop { display: none; }
  .sidebar-open { overflow: auto; }

  .main { margin-left: var(--sidebar-width); }
  .topbar { min-height: 76px; padding-top: 16px; padding-bottom: 16px; }
  h1 { font-size: 1.5rem; }
  .content { padding-top: 8px; }
  .grid-2 { grid-template-columns: 1.3fr 1fr; align-items: start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}