:root {
  color-scheme: light;
  --bb-bg: #f6f5f1;
  --bb-surface: #ffffff;
  --bb-surface-subtle: #efeee9;
  --bb-text: #15151a;
  --bb-text-soft: #52525b;
  --bb-text-muted: #73737c;
  --bb-border: #dfded7;
  --bb-border-strong: #c9c8c0;
  --bb-accent: #5e5fce;
  --bb-accent-dark: #4c4db4;
  --bb-success: #247052;
  --bb-success-bg: #e9f5ef;
  --bb-warning: #8a5a12;
  --bb-warning-bg: #fff4d9;
  --bb-danger: #b33a3a;
  --bb-danger-bg: #fff0ef;
  --bb-shadow: 0 20px 60px rgba(20, 20, 26, 0.09);
  --bb-radius-sm: 10px;
  --bb-radius: 16px;
  --bb-radius-lg: 24px;
  --bb-font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  background: var(--bb-bg);
  color: var(--bb-text);
  font-family: var(--bb-font);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body { min-height: 100vh; margin: 0; background: var(--bb-bg); }
a { color: var(--bb-accent-dark); text-underline-offset: 0.18em; }
a:hover { color: var(--bb-accent); }
img { max-width: 100%; }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(223, 222, 215, 0.84);
  background: rgba(246, 245, 241, 0.9);
  backdrop-filter: blur(18px);
}

.site-nav {
  display: flex;
  width: min(1180px, calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  color: var(--bb-text);
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand:hover { color: var(--bb-text); }
.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  background: var(--bb-text);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}
.brand-product { color: var(--bb-text-muted); font-weight: 550; }

.nav-links {
  display: flex;
  margin: 0;
  padding: 0;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  display: inline-flex;
  padding: 8px 10px;
  border-radius: 9px;
  color: var(--bb-text-soft);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}
.nav-links a:hover { background: var(--bb-surface-subtle); color: var(--bb-text); }
.nav-user { margin-left: 6px; color: var(--bb-text-muted); font-size: 0.84rem; }

.container { width: min(1100px, calc(100% - 40px)); margin: 0 auto; padding: 56px 0 80px; }
.public-page .container { display: grid; min-height: calc(100vh - 69px); padding-block: 48px; place-items: center; }
.content-narrow { width: min(720px, 100%); margin-inline: auto; }

h1, h2, h3, h4 { margin: 0 0 0.65em; color: var(--bb-text); line-height: 1.12; letter-spacing: -0.035em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); }
h2 { font-size: clamp(1.7rem, 4vw, 2.45rem); }
h3 { margin-top: 1.7em; font-size: 1.22rem; }
p { margin: 0 0 1rem; color: var(--bb-text-soft); }
hgroup { margin-bottom: 28px; }
hgroup > * { margin-bottom: 0.3rem; }
hgroup p { color: var(--bb-text-muted); font-size: 1.04rem; }
hr { height: 1px; margin: 32px 0; border: 0; background: var(--bb-border); }
small, .muted { color: var(--bb-text-muted); }

.eyebrow {
  margin-bottom: 12px;
  color: var(--bb-accent-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

article, .panel {
  margin-bottom: 24px;
  padding: clamp(22px, 4vw, 32px);
  border: 1px solid var(--bb-border);
  border-radius: var(--bb-radius);
  background: var(--bb-surface);
  box-shadow: 0 1px 0 rgba(20, 20, 26, 0.02);
}
article > header { margin: -4px 0 20px; font-size: 1.02rem; }
.auth-card { width: min(440px, 100%); margin: 0 auto; padding: clamp(28px, 6vw, 42px); border-radius: var(--bb-radius-lg); box-shadow: var(--bb-shadow); }
.auth-card h2 { margin-bottom: 8px; }
.auth-card .intro { margin-bottom: 28px; }
.consent-card { width: min(540px, 100%); margin: 0 auto; padding: clamp(28px, 6vw, 42px); border-radius: var(--bb-radius-lg); box-shadow: var(--bb-shadow); }
.consent-app { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
.consent-app-icon { display: grid; width: 52px; height: 52px; flex: 0 0 auto; place-items: center; border-radius: 14px; background: #e8e8fb; color: var(--bb-accent-dark); font-size: 1.3rem; font-weight: 800; }
.consent-app h2 { margin: 0 0 4px; font-size: 1.45rem; }
.consent-app p { margin: 0; font-size: 0.93rem; }
.scope-list { display: grid; margin: 20px 0 28px; padding: 0; gap: 10px; list-style: none; }
.scope-list li { position: relative; padding: 12px 14px 12px 44px; border-radius: 12px; background: var(--bb-surface-subtle); color: var(--bb-text-soft); }
.scope-list li::before { position: absolute; top: 11px; left: 14px; display: grid; width: 22px; height: 22px; place-items: center; border-radius: 50%; background: #dcf0e6; color: var(--bb-success); content: "\2713"; font-size: 0.76rem; font-weight: 900; }

form { margin: 0; }
label { display: block; margin-bottom: 18px; color: var(--bb-text); font-size: 0.9rem; font-weight: 700; }
input, select, textarea {
  display: block;
  width: 100%;
  min-height: 46px;
  margin-top: 7px;
  padding: 10px 13px;
  border: 1px solid var(--bb-border-strong);
  border-radius: var(--bb-radius-sm);
  outline: none;
  background: var(--bb-surface);
  color: var(--bb-text);
  font: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea { min-height: 110px; resize: vertical; }
select[multiple] { min-height: 150px; }
input:focus, select:focus, textarea:focus { border-color: var(--bb-accent); box-shadow: 0 0 0 3px rgba(94, 95, 206, 0.14); }
input:disabled, input:read-only { background: var(--bb-surface-subtle); color: var(--bb-text-muted); }
input[type="checkbox"] { display: inline-block; width: 17px; min-height: 17px; margin: 0 8px 0 0; accent-color: var(--bb-accent); vertical-align: -3px; }

button, [role="button"] {
  display: inline-flex;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--bb-text);
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  background: var(--bb-text);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 750;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 0.15s, background 0.15s, border-color 0.15s;
}
button:hover, [role="button"]:hover { border-color: #303038; background: #303038; color: #fff; transform: translateY(-1px); }
button:focus-visible, [role="button"]:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid rgba(94, 95, 206, 0.35); outline-offset: 2px; }
button:disabled { cursor: wait; opacity: 0.65; }
button.secondary, [role="button"].secondary { border-color: var(--bb-border-strong); background: transparent; color: var(--bb-text); }
button.secondary:hover, [role="button"].secondary:hover { border-color: var(--bb-text); background: var(--bb-surface-subtle); color: var(--bb-text); }
button.danger, [role="button"].danger { border-color: var(--bb-danger); background: var(--bb-danger); color: #fff; }
.button-compact { min-height: 36px; padding: 7px 13px; font-size: 0.82rem; }
.button-block { width: 100%; }
.google-button { position: relative; gap: 10px; border-color: var(--bb-border-strong); background: #fff; color: var(--bb-text); }
.google-button:hover { border-color: var(--bb-text); background: var(--bb-surface-subtle); color: var(--bb-text); }
.google-mark { display: inline-grid; width: 22px; height: 22px; place-items: center; border-radius: 50%; color: #4285f4; font-weight: 850; }
.login-methods { display: grid; gap: 10px; }
#login-form:not([hidden]) { padding-top: 2px; }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.actions form { margin: 0; }
.auth-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.text-center { text-align: center; }
.form-switch { margin: 16px 0 0; text-align: center; font-size: 0.88rem; }
.code-input { text-align: center; font-size: 1.35rem; font-weight: 700; letter-spacing: 0.28em; }
.backup-input { text-transform: uppercase; letter-spacing: 0.1em; }

.notice, .error, .success {
  margin: 0 0 20px;
  padding: 13px 15px;
  border: 1px solid;
  border-radius: 12px;
  font-size: 0.92rem;
}
.error, .notice.danger { border-color: #efc5c2; background: var(--bb-danger-bg); color: var(--bb-danger); }
.success, .notice.success { border-color: #bfddcf; background: var(--bb-success-bg); color: var(--bb-success); }
.notice.warning { border-color: #ead49d; background: var(--bb-warning-bg); color: var(--bb-warning); }
.notice p:last-child { margin-bottom: 0; }
.status-success { color: var(--bb-success); font-weight: 650; }

.badge { display: inline-block; margin: 2px; padding: 3px 8px; border-radius: 999px; background: #e8e8fb; color: var(--bb-accent-dark); font-size: 0.76rem; font-weight: 700; }
.admin-badge { background: var(--bb-warning-bg); color: var(--bb-warning); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

.table-wrap { margin-top: 20px; overflow-x: auto; border: 1px solid var(--bb-border); border-radius: var(--bb-radius); background: var(--bb-surface); }
table { width: 100%; border-collapse: collapse; font-size: 0.89rem; }
th, td { padding: 13px 15px; border-bottom: 1px solid var(--bb-border); text-align: left; vertical-align: top; }
th { background: var(--bb-surface-subtle); color: var(--bb-text-soft); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }

code { padding: 0.12em 0.35em; border-radius: 5px; background: var(--bb-surface-subtle); color: var(--bb-text); font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.88em; }
pre { max-width: 100%; padding: 18px; overflow-x: auto; border: 1px solid var(--bb-border); border-radius: 12px; background: #17171d; color: #f4f4f5; }
pre code { padding: 0; background: transparent; color: inherit; }
details { padding: 14px 16px; border: 1px solid var(--bb-border); border-radius: 12px; background: var(--bb-surface-subtle); }
summary { cursor: pointer; color: var(--bb-text); font-weight: 700; }

.qr-wrap { margin: 24px 0; text-align: center; }
.qr-wrap img { width: min(250px, 100%); padding: 10px; border: 1px solid var(--bb-border); border-radius: 16px; background: #fff; image-rendering: pixelated; }
.secret-code { display: block; margin: 12px 0 0; padding: 14px; word-break: break-all; text-align: center; letter-spacing: 0.12em; }
.backup-grid { display: grid; margin: 24px 0; grid-template-columns: 1fr 1fr; gap: 8px; }
.backup-code { padding: 10px; border: 1px solid var(--bb-border); border-radius: 9px; background: var(--bb-surface-subtle); font-family: monospace; font-size: 1rem; text-align: center; letter-spacing: 0.08em; }

.app-grid { display: grid; margin-top: 24px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
.app-tile { display: flex; min-height: 180px; padding: 24px 18px; border: 1px solid var(--bb-border); border-radius: var(--bb-radius); align-items: center; flex-direction: column; justify-content: center; background: var(--bb-surface); color: var(--bb-text); text-decoration: none; transition: box-shadow 0.2s, transform 0.15s, border-color 0.15s; }
.app-tile:hover { border-color: var(--bb-border-strong); box-shadow: 0 12px 34px rgba(20, 20, 26, 0.08); color: var(--bb-text); transform: translateY(-3px); }
.app-tile-icon, .app-tile-placeholder { display: grid; width: 64px; height: 64px; margin-bottom: 14px; place-items: center; overflow: hidden; border-radius: 17px; background: #e8e8fb; color: var(--bb-accent-dark); font-size: 1.7rem; font-weight: 800; }
.app-tile-icon img { width: 100%; height: 100%; object-fit: contain; }
.app-tile-name { font-size: 0.95rem; font-weight: 750; text-align: center; }
.no-apps { padding: 52px 24px; border: 1px dashed var(--bb-border-strong); border-radius: var(--bb-radius); text-align: center; }

@media (max-width: 860px) {
  .site-nav { width: min(1180px, calc(100% - 24px)); min-height: 62px; }
  .nav-links { max-width: 68vw; overflow-x: auto; }
  .nav-user { display: none; }
  .container { width: min(1100px, calc(100% - 28px)); padding-block: 36px 60px; }
}

@media (max-width: 620px) {
  .brand-product { display: none; }
  .nav-links a { padding-inline: 8px; font-size: 0.82rem; white-space: nowrap; }
  .grid, .auth-actions { grid-template-columns: 1fr; }
  .auth-card, .consent-card { padding: 26px 20px; border-radius: 18px; }
  .public-page .container { align-items: start; padding-top: 28px; }
  .backup-grid { grid-template-columns: 1fr; }
  .actions > button, .actions > [role="button"] { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bb-bg: #101a29;
    --bb-surface: #172438;
    --bb-surface-subtle: #202f45;
    --bb-text: #f4f5f7;
    --bb-text-soft: #c3cad4;
    --bb-text-muted: #96a2b2;
    --bb-border: #2d3b50;
    --bb-border-strong: #42516a;
    --bb-accent: #aaa9ff;
    --bb-accent-dark: #c0bfff;
    --bb-success: #75d7aa;
    --bb-success-bg: #173b33;
    --bb-warning: #f1c777;
    --bb-warning-bg: #493817;
    --bb-danger: #ff9a96;
    --bb-danger-bg: #482326;
    --bb-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  }
  .site-header { border-color: rgba(45, 59, 80, 0.86); background: rgba(16, 26, 41, 0.9); }
  .brand-mark, button, [role="button"] { border-color: #f4f5f7; background: #f4f5f7; color: #101a29; }
  button:hover, [role="button"]:hover { border-color: #d9dde3; background: #d9dde3; color: #101a29; }
  .google-button { border-color: var(--bb-border-strong); background: var(--bb-surface); color: var(--bb-text); }
  .google-button:hover { border-color: var(--bb-text); background: var(--bb-surface-subtle); color: var(--bb-text); }
  pre { background: #0b111c; }
}