:root {
  color-scheme: light;

  --bg: #f4f6fc;
  --surface: #ffffff;
  --surface-2: #eef1f9;
  --border: rgba(30, 45, 90, 0.1);
  --border-strong: rgba(30, 45, 90, 0.2);
  --text: #1c2340;
  --muted: #6b7494;
  --primary: #4f6fe6;
  --primary-2: #8b5cf6;
  --success: #16a56b;
  --error: #e0455c;
  --warn: #d99a1f;

  --topbar-bg: rgba(255, 255, 255, 0.78);
  --input-bg: #ffffff;
  --input-focus-bg: #ffffff;
  --placeholder: rgba(107, 116, 148, 0.55);
  --btn-bg: #ffffff;
  --btn-border: var(--border-strong);
  --btn-hover: var(--surface-2);
  --ghost-hover: rgba(30, 45, 90, 0.05);
  --accent-soft: rgba(79, 111, 230, 0.1);
  --accent-border: rgba(79, 111, 230, 0.25);
  --accent-text: #4460c9;
  --table-bg: #ffffff;
  --thead-bg: #eef1f9;
  --row-hover: rgba(79, 111, 230, 0.05);
  --toast-bg: rgba(255, 255, 255, 0.95);
  --toast-shadow: rgba(28, 35, 64, 0.22);
  --dot: rgba(28, 35, 64, 0.045);
  --glow: rgba(79, 111, 230, 0.55);
  --focus-ring: rgba(79, 111, 230, 0.15);

  --stat-grad-from: #1c2340;
  --stat-grad-to: #4f6fe6;

  --mesh-1: rgba(79, 111, 230, 0.14);
  --mesh-2: rgba(139, 92, 246, 0.1);
  --mesh-3: rgba(22, 165, 107, 0.07);

  --alert-error-bg: rgba(224, 69, 92, 0.08);
  --alert-error-border: rgba(224, 69, 92, 0.35);
  --alert-error-text: #b3324a;
  --alert-warn-bg: rgba(217, 154, 31, 0.09);
  --alert-warn-border: rgba(217, 154, 31, 0.35);
  --alert-warn-text: #93690f;
  --alert-success-bg: rgba(22, 165, 107, 0.08);
  --alert-success-border: rgba(22, 165, 107, 0.35);
  --alert-success-text: #0f7a4f;

  --icon-violet-bg: rgba(139, 92, 246, 0.12);
  --icon-violet-fg: #7c4fe0;
  --icon-cyan-bg: rgba(14, 165, 210, 0.1);
  --icon-cyan-fg: #0e8fb8;
  --icon-amber-bg: rgba(217, 154, 31, 0.12);
  --icon-amber-fg: #b57d10;
  --icon-green-bg: rgba(22, 165, 107, 0.11);
  --icon-green-fg: #12925e;
  --icon-blue-bg: rgba(79, 111, 230, 0.11);
  --icon-blue-fg: #4460c9;
  --icon-pink-bg: rgba(236, 72, 153, 0.1);
  --icon-pink-fg: #d43e86;

  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 16px 40px -18px rgba(28, 35, 64, 0.18);
  font-family: "Heebo", "Segoe UI", "Assistant", system-ui, -apple-system,
    Arial, sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;

  --bg: #0a0d1a;
  --surface: #151a2e;
  --surface-2: #222842;
  --border: rgba(120, 140, 200, 0.16);
  --border-strong: rgba(120, 140, 200, 0.3);
  --text: #eef1fb;
  --muted: #8f9ac0;
  --primary: #6d8dff;
  --primary-2: #a06bff;
  --success: #34d388;
  --error: #ff5c72;
  --warn: #f5b942;

  --topbar-bg: rgba(14, 17, 32, 0.72);
  --input-bg: #10142a;
  --input-focus-bg: #0d1124;
  --placeholder: rgba(143, 154, 192, 0.55);
  --btn-bg: #222842;
  --btn-border: var(--border);
  --btn-hover: #2e3658;
  --ghost-hover: rgba(46, 54, 88, 0.5);
  --accent-soft: rgba(109, 141, 255, 0.12);
  --accent-border: rgba(109, 141, 255, 0.3);
  --accent-text: #a8bcff;
  --table-bg: #10142a;
  --thead-bg: #0d1124;
  --row-hover: rgba(109, 141, 255, 0.06);
  --toast-bg: rgba(24, 28, 48, 0.92);
  --toast-shadow: rgba(0, 0, 0, 0.55);
  --dot: rgba(255, 255, 255, 0.035);
  --glow: rgba(109, 141, 255, 0.7);
  --focus-ring: rgba(109, 141, 255, 0.18);

  --stat-grad-from: #ffffff;
  --stat-grad-to: #c7d2ff;

  --mesh-1: rgba(109, 141, 255, 0.22);
  --mesh-2: rgba(160, 107, 255, 0.14);
  --mesh-3: rgba(52, 211, 136, 0.08);

  --alert-error-bg: rgba(255, 92, 114, 0.1);
  --alert-error-border: rgba(255, 92, 114, 0.45);
  --alert-error-text: #ffb3bd;
  --alert-warn-bg: rgba(245, 185, 66, 0.1);
  --alert-warn-border: rgba(245, 185, 66, 0.45);
  --alert-warn-text: #ffd98a;
  --alert-success-bg: rgba(52, 211, 136, 0.1);
  --alert-success-border: rgba(52, 211, 136, 0.45);
  --alert-success-text: #9fe9bf;

  --icon-violet-bg: rgba(160, 107, 255, 0.14);
  --icon-violet-fg: #b98cff;
  --icon-cyan-bg: rgba(56, 200, 235, 0.12);
  --icon-cyan-fg: #5cd6f5;
  --icon-amber-bg: rgba(245, 185, 66, 0.12);
  --icon-amber-fg: #ffd069;
  --icon-green-bg: rgba(52, 211, 136, 0.12);
  --icon-green-fg: #55e6a5;
  --icon-blue-bg: rgba(109, 141, 255, 0.14);
  --icon-blue-fg: #8fa8ff;
  --icon-pink-bg: rgba(255, 105, 180, 0.12);
  --icon-pink-fg: #ff8fc6;

  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
}

/* Author display rules (e.g. flex) must not defeat the hidden attribute. */
[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Animated background ---------- */

.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px 400px at 85% -5%, var(--mesh-1), transparent 65%),
    radial-gradient(700px 500px at -10% 20%, var(--mesh-2), transparent 60%),
    radial-gradient(600px 500px at 50% 110%, var(--mesh-3), transparent 60%),
    var(--bg);
}

.bg-mesh::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 70%);
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 6px 18px -6px var(--glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-weight: 800;
  font-size: 16px;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 16px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.user-avatar {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: var(--primary);
}

.user-avatar svg {
  width: 16px;
  height: 16px;
}

/* ---------- Theme switch (horizontal) ---------- */

.theme-switch {
  position: relative;
  width: 68px;
  height: 34px;
  flex-shrink: 0;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.theme-switch:hover {
  border-color: var(--primary);
}

.switch-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--muted);
  z-index: 1;
  transition: color 0.25s ease;
  pointer-events: none;
}

/* The active side's icon sits on top of the knob, so paint it white. */
.icon-sun {
  left: 9px;
  color: #fff;
}

.icon-moon {
  right: 9px;
}

[data-theme="dark"] .icon-sun {
  color: var(--muted);
}

[data-theme="dark"] .icon-moon {
  color: #fff;
}

.switch-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 3px 10px -2px var(--glow);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .switch-knob {
  transform: translateX(34px);
}

/* ---------- Layout ---------- */

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.view {
  animation: fadeUp 0.45s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Cards ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.card:hover {
  border-color: var(--border-strong);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.card-head h2 {
  margin: 0;
}

.card-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  flex-shrink: 0;
}

.card-icon svg {
  width: 19px;
  height: 19px;
}

.card-icon.violet {
  background: var(--icon-violet-bg);
  color: var(--icon-violet-fg);
}

.card-icon.cyan {
  background: var(--icon-cyan-bg);
  color: var(--icon-cyan-fg);
}

.card-icon.amber {
  background: var(--icon-amber-bg);
  color: var(--icon-amber-fg);
}

.card-icon.green {
  background: var(--icon-green-bg);
  color: var(--icon-green-fg);
}

.card-icon.blue {
  background: var(--icon-blue-bg);
  color: var(--icon-blue-fg);
}

.card-icon.pink {
  background: var(--icon-pink-bg);
  color: var(--icon-pink-fg);
}

/* ---------- Login ---------- */

.login-wrap {
  display: grid;
  place-items: center;
  min-height: calc(100vh - 180px);
}

.login-card {
  width: 100%;
  max-width: 430px;
  padding: 40px 36px;
  text-align: center;
}

.login-logo {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 1px;
  box-shadow: 0 14px 34px -10px var(--glow);
}

.login-sub {
  margin: 0 0 26px;
}

.login-card form,
.login-card .stack {
  text-align: right;
}

/* ---------- Typography ---------- */

h1 {
  margin: 0 0 4px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

h2 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
}

.muted {
  color: var(--muted);
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.section-sub {
  margin: 2px 0 0;
  font-size: 14px;
}

/* ---------- Stats ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.stat:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.stat::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--primary-2));
}

.cards .stat:nth-child(2)::before {
  background: linear-gradient(180deg, #22b8e0, #0e8fb8);
}

.cards .stat:nth-child(3)::before {
  background: linear-gradient(180deg, #ecb43c, #d99a1f);
}

.cards .stat:nth-child(4)::before {
  background: linear-gradient(180deg, #2cc98a, #16a56b);
}

.stat .value {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -1px;
  background: linear-gradient(120deg, var(--stat-grad-from), var(--stat-grad-to));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat .label {
  color: var(--muted);
  margin-top: 4px;
  font-size: 14px;
  font-weight: 500;
}

/* ---------- Grids ---------- */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

/* ---------- Breakdown lists ---------- */

.breakdown {
  list-style: none;
  margin: 0;
  padding: 0;
}

.breakdown li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 2px;
  border-bottom: 1px solid var(--border);
  font-size: 14.5px;
}

.breakdown li:last-child {
  border-bottom: none;
}

.breakdown .count {
  font-weight: 800;
  font-size: 15px;
  min-width: 34px;
  text-align: center;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-text);
}

/* ---------- Forms ---------- */

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
}

input,
select,
textarea {
  background: var(--input-bg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font: inherit;
  font-weight: 400;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

input::placeholder,
textarea::placeholder {
  color: var(--placeholder);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--input-focus-bg);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

textarea {
  resize: vertical;
  min-height: 84px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--text);
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: 14.5px;
  transition: transform 0.08s ease, background 0.2s ease,
    border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  background: var(--btn-hover);
  border-color: var(--border-strong);
}

.btn:active {
  transform: translateY(1px) scale(0.99);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-icon {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 22px -8px var(--glow);
}

.btn.primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 10px 28px -8px var(--glow);
}

.btn.ghost {
  background: transparent;
  border-color: var(--border);
}

.btn.ghost:hover {
  background: var(--ghost-hover);
}

.btn.google {
  background: #fff;
  border-color: rgba(30, 45, 90, 0.2);
  color: #1f2430;
}

.btn.google:hover {
  background: #f0f2f8;
}

.btn.block {
  width: 100%;
}

.btn.small {
  padding: 8px 14px;
  font-size: 13.5px;
}

/* ---------- Search ---------- */

.search-row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-row input[type="search"] {
  flex: 1;
  min-width: 150px;
}

/* ---------- Table ---------- */

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--table-bg);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  text-align: right;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

thead tr {
  background: var(--thead-bg);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

tbody tr {
  transition: background 0.15s ease;
}

tbody tr:hover {
  background: var(--row-hover);
}

tbody tr:last-child td {
  border-bottom: none;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 28px 14px;
}

/* ---------- Alerts ---------- */

.alert {
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.5;
}

.alert.error {
  background: var(--alert-error-bg);
  border: 1px solid var(--alert-error-border);
  color: var(--alert-error-text);
}

.alert.warn {
  background: var(--alert-warn-bg);
  border: 1px solid var(--alert-warn-border);
  color: var(--alert-warn-text);
}

.alert.success {
  background: var(--alert-success-bg);
  border: 1px solid var(--alert-success-border);
  color: var(--alert-success-text);
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--toast-bg);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 13px 22px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  box-shadow: 0 16px 44px var(--toast-shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 50;
  animation: toastIn 0.3s cubic-bezier(0.21, 1.02, 0.73, 1) both;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.toast.success {
  border-color: var(--alert-success-border);
  box-shadow: 0 16px 44px var(--toast-shadow),
    0 0 24px -6px var(--alert-success-border);
}

.toast.error {
  border-color: var(--alert-error-border);
  box-shadow: 0 16px 44px var(--toast-shadow),
    0 0 24px -6px var(--alert-error-border);
}

/* ---------- Pills & links ---------- */

.pill {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent-text);
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background 0.15s ease;
}

.link-btn:hover {
  background: var(--accent-soft);
}

.send-hint {
  margin: -6px 0 16px;
  font-size: 13.5px;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .container {
    padding: 20px 16px 48px;
  }

  .topbar {
    padding: 12px 16px;
  }

  .brand-sub {
    display: none;
  }

  h1 {
    font-size: 22px;
  }

  .stat .value {
    font-size: 30px;
  }

  .login-card {
    padding: 30px 22px;
  }
}