:root {
  --bg: #f3f2ef;
  --card: #fff;
  --text: #191919;
  --muted: #666;
  --line: #d0d0cc;
  --blue: #0a66c2;
  --blue-d: #004182;
  --blue-l: #e8f3ff;
  --err: #cc1016;
  --err-bg: #fce8e8;
  --ok: #057642;
  --ok-bg: #e6f4ea;
  --warn: #b25e02;
  --warn-bg: #fef3d6;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000;
    --card: #1b1f23;
    --text: #eaeaea;
    --muted: #a0a4a8;
    --line: #3c4145;
    --blue: #71b7fb;
    --blue-d: #9fd0ff;
    --blue-l: #1d2a38;
    --err: #ff6b6b;
    --err-bg: #3c1e20;
    --ok: #5fd08f;
    --ok-bg: #143522;
    --warn: #e09b3d;
    --warn-bg: #382711;
  }
}

:root[data-theme="dark"] {
  --bg: #000;
  --card: #1b1f23;
  --text: #eaeaea;
  --muted: #a0a4a8;
  --line: #3c4145;
  --blue: #71b7fb;
  --blue-d: #9fd0ff;
  --blue-l: #1d2a38;
  --err: #ff6b6b;
  --err-bg: #3c1e20;
  --ok: #5fd08f;
  --ok-bg: #143522;
  --warn: #e09b3d;
  --warn-bg: #382711;
}

html {
  scroll-padding-top: env(safe-area-inset-top, 0px);
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* Nav Bar */
.nav {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
}

.nav-inner {
  max-width: 1128px;
  margin: 0 auto;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  flex: none;
}

.logo {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  display: grid;
  place-items: center;
  font-size: 18px;
  line-height: 1;
  user-select: none;
  flex: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) .logo {
    color: #000;
  }
}
:root[data-theme="dark"] .logo {
  color: #000;
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  color: var(--text);
  background: var(--bg);
}

.nav-link.active {
  color: var(--blue);
  background: var(--blue-l);
}

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-sub {
  color: var(--muted);
  font-size: 13px;
}

/* Layout container */
.wrap {
  max-width: 1128px;
  margin: 24px auto;
  padding: 0 16px;
}

/* Card */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.card-body {
  padding: 20px;
}

/* Typography */
h1 {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 6px;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 4px;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 4px;
}

.sub {
  color: var(--muted);
  margin: 0 0 20px;
  font-size: 14px;
}

/* Buttons */
.btn {
  border-radius: 24px;
  padding: 8px 20px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.btn:hover {
  background: var(--blue-d);
  border-color: var(--blue-d);
  color: #fff;
}

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

.btn.g:hover {
  background: var(--blue-l);
  color: var(--blue-d);
}

.btn.neutral {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.btn.neutral:hover {
  background: var(--bg);
  border-color: var(--muted);
}

.btn.sm {
  padding: 5px 14px;
  font-size: 13px;
  border-radius: 18px;
}

.btn.lg {
  padding: 11px 26px;
  font-size: 15px;
  border-radius: 28px;
}

.btn.danger {
  background: var(--err);
  border-color: var(--err);
  color: #fff;
}

.btn.danger:hover {
  background: #a80c11;
  border-color: #a80c11;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) .btn {
    color: #000;
  }
  :root:not([data-theme=light]) .btn:hover {
    color: #000;
  }
  :root:not([data-theme=light]) .btn.g {
    color: var(--blue);
  }
  :root:not([data-theme=light]) .btn.neutral {
    color: var(--text);
  }
  :root:not([data-theme=light]) .btn.danger {
    color: #000;
  }
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge.blue {
  background: var(--blue-l);
  color: var(--blue-d);
}

.badge.ok {
  background: var(--ok-bg);
  color: var(--ok);
}

.badge.warn {
  background: var(--warn-bg);
  color: var(--warn);
}

.badge.err {
  background: var(--err-bg);
  color: var(--err);
}

.badge.muted {
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--line);
}

/* Chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  background: var(--blue-l);
  color: var(--blue-d);
  border-radius: 14px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Form Elements */
input[type=text],
input[type=email],
input[type=password],
input[type=search],
input[type=number],
select,
textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #8c8c8c;
  border-radius: 4px;
  font: inherit;
  background: var(--card);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--blue);
  outline-offset: 1px;
  border-color: var(--blue);
}

/* Tab Navigation */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  gap: 16px;
  margin-bottom: 20px;
  overflow-x: auto;
}

.tab-btn {
  background: none;
  border: none;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  padding: 10px 4px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.tab-btn .tab-count {
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--bg);
  color: var(--muted);
}

.tab-btn.active .tab-count {
  background: var(--blue-l);
  color: var(--blue-d);
}

/* Avatar */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue-l);
  color: var(--blue-d);
  font-weight: 700;
  font-size: 15px;
  display: grid;
  place-items: center;
  flex: none;
  text-transform: uppercase;
}

.avatar.sq {
  border-radius: 6px;
}

.avatar.lg {
  width: 64px;
  height: 64px;
  font-size: 24px;
}

.avatar.sm {
  width: 28px;
  height: 28px;
  font-size: 12px;
}

/* Grid & flex helpers */
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-center {
  display: flex;
  align-items: center;
}

.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

/* Responsive */
@media (max-width: 860px) {
  .nav-inner {
    flex-wrap: wrap;
    gap: 10px;
  }
  .nav-links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }
  .nav-sub {
    display: none;
  }
  .wrap {
    padding: 0 12px;
    margin: 16px auto;
  }
}