/**
 * Global shell: space nav, typography, utilities
 * Fonts: load /static/ttb-fonts.css before this file.
 */

html {
  scroll-behavior: smooth;
}

body.ttb-app-body {
  font-family: var(--ttb-font-body);
  color: var(--ttb-ink);
  background: transparent;
  min-height: 100vh;
}

body.ttb-app-body .container.mx-auto,
body.ttb-app-body .ttb-main-wrap {
  max-width: var(--ttb-layout-max);
}

body.ttb-app-body .stars,
body.ttb-app-body .twinkling {
  display: none !important;
}

body.ttb-app-body .ttb-main-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--ttb-layout-max);
  padding: var(--ttb-layout-nav-gap) var(--ttb-layout-gutter) 2.5rem;
  margin: 0 auto;
  box-sizing: border-box;
}

/* Module shells that replace {% block main_container %} (no .ttb-main-wrap wrapper) */
body.ttb-app-body > .ttb-deck,
body.ttb-app-body > .chatbox-container,
body.ttb-app-body > .analytics-container,
body.ttb-app-body > .ttb-curriculum-shell {
  width: 100%;
  max-width: var(--ttb-layout-max);
  margin-left: auto;
  margin-right: auto;
  padding-top: var(--ttb-layout-nav-gap);
  padding-left: var(--ttb-layout-gutter);
  padding-right: var(--ttb-layout-gutter);
  box-sizing: border-box;
}

body.ttb-app-body .ttb-deck.container,
body.ttb-app-body .container.ttb-deck {
  max-width: var(--ttb-layout-max) !important;
  padding-left: var(--ttb-layout-gutter) !important;
  padding-right: var(--ttb-layout-gutter) !important;
}

/* ——— Command nav ——— */
.ttb-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: oklch(0.16 0.04 265 / 0.88);
  border-bottom: 1px solid var(--ttb-border-strong);
  box-shadow: var(--ttb-shadow-md), 0 1px 0 oklch(0.78 0.14 200 / 0.12);
  backdrop-filter: blur(20px);
}

.ttb-nav__inner {
  max-width: var(--ttb-layout-max);
  margin: 0 auto;
  padding: 0 var(--ttb-layout-gutter);
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.ttb-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ttb-ink);
  flex-shrink: 0;
}

.ttb-nav__logo {
  width: 2.65rem;
  height: 2.65rem;
  border-radius: var(--ttb-radius-sm);
  box-shadow: 0 0 16px oklch(0.72 0.14 200 / 0.35);
  border: 1px solid var(--ttb-border-glow);
}

.ttb-nav__wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.ttb-nav__title {
  font-family: var(--ttb-font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ttb-signal);
}

.ttb-nav__tagline {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ttb-ink-muted);
  text-transform: uppercase;
}

@media (max-width: 1280px) {
  .ttb-nav__tagline {
    display: none;
  }
}

.ttb-nav__links {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.05rem;
  flex: 1;
  min-width: 0;
  flex-wrap: nowrap;
}

@media (min-width: 1024px) {
  .ttb-nav__links {
    display: flex;
  }
}

/* App names stay camelCase; Orbitron is wordmark-only (uppercase HUD) */
.ttb-nav__link {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.45rem;
  border-radius: var(--ttb-radius-sm);
  font-family: var(--ttb-font-body);
  font-size: clamp(0.8rem, 0.95vw, 0.9rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
  white-space: nowrap;
  color: var(--ttb-ink-muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background var(--ttb-duration) var(--ttb-ease-out),
    color var(--ttb-duration) var(--ttb-ease-out),
    border-color var(--ttb-duration) var(--ttb-ease-out),
    box-shadow var(--ttb-duration) var(--ttb-ease-out);
}

.ttb-nav__link:hover {
  color: var(--ttb-ink);
  background: oklch(0.28 0.05 265 / 0.8);
  border-color: var(--ttb-border);
}

.ttb-nav__link--chatbox:hover {
  color: var(--ttb-chatbox);
  border-color: oklch(0.68 0.2 25 / 0.4);
  box-shadow: 0 0 12px oklch(0.68 0.2 25 / 0.2);
}

.ttb-nav__link--vocab:hover {
  color: var(--ttb-vocab);
  border-color: oklch(0.7 0.14 200 / 0.4);
  box-shadow: 0 0 12px oklch(0.7 0.14 200 / 0.2);
}

.ttb-nav__link--writing:hover {
  color: var(--ttb-writer);
  border-color: oklch(0.78 0.16 88 / 0.4);
}

.ttb-nav__link--curriculum:hover {
  color: var(--ttb-curriculum);
  border-color: oklch(0.66 0.16 285 / 0.4);
}

.ttb-nav__link--leaderboard:hover {
  color: var(--ttb-leaderboard);
  border-color: oklch(0.8 0.14 88 / 0.4);
}

.ttb-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.ttb-nav__user-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.65rem 0.3rem 0.3rem;
  border: 1px solid var(--ttb-border-strong);
  border-radius: var(--ttb-radius-pill);
  background: oklch(0.22 0.04 265 / 0.9);
  color: var(--ttb-ink);
  cursor: pointer;
  transition: border-color var(--ttb-duration) var(--ttb-ease-out), box-shadow var(--ttb-duration) var(--ttb-ease-out);
}

.ttb-nav__username {
  font-family: var(--ttb-font-display);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ttb-signal);
  max-width: 8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ttb-nav__user-btn:hover {
  border-color: var(--ttb-signal);
  box-shadow: var(--ttb-glow-signal);
}

.ttb-nav__avatar {
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 50%;
  border: 1px solid var(--ttb-border-glow);
}

.ttb-nav__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--ttb-border-strong);
  border-radius: var(--ttb-radius-sm);
  background: oklch(0.22 0.04 265 / 0.9);
  color: var(--ttb-ink);
  cursor: pointer;
}

@media (min-width: 1024px) {
  .ttb-nav__menu-btn {
    display: none;
  }
}

.ttb-nav__drawer {
  display: none;
  padding: 0.75rem 1rem 1rem;
  border-top: 1px solid var(--ttb-border);
  background: oklch(0.14 0.04 265 / 0.98);
}

.ttb-nav__drawer.is-open {
  display: block;
}

.ttb-nav__drawer .ttb-nav__link {
  display: flex;
  width: 100%;
  margin-bottom: 0.2rem;
}

.ttb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--ttb-radius-sm);
  font-family: var(--ttb-font-display);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition:
    transform var(--ttb-duration) var(--ttb-ease-out),
    box-shadow var(--ttb-duration) var(--ttb-ease-out);
}

.ttb-btn:focus-visible {
  outline: 2px solid var(--ttb-signal);
  outline-offset: 2px;
}

.ttb-btn--primary {
  background: linear-gradient(180deg, var(--ttb-signal) 0%, var(--ttb-signal-deep) 100%);
  color: oklch(0.12 0.04 265);
  box-shadow: 0 0 20px oklch(0.72 0.14 200 / 0.35);
}

.ttb-btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 28px oklch(0.72 0.14 200 / 0.45);
}

.ttb-btn--ghost {
  background: transparent;
  color: var(--ttb-signal);
  border: 1px solid var(--ttb-border-strong);
}

.ttb-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 13rem;
  background: oklch(0.2 0.04 265 / 0.98);
  border: 1px solid var(--ttb-border-strong);
  border-radius: var(--ttb-radius-md);
  box-shadow: var(--ttb-shadow-lg);
  padding: 0.35rem 0;
  z-index: 50;
}

.ttb-dropdown a {
  display: block;
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ttb-ink-muted);
  text-decoration: none;
}

.ttb-dropdown a:hover {
  background: oklch(0.28 0.05 265);
  color: var(--ttb-ink);
}

.ttb-flash {
  border-radius: var(--ttb-radius-md);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  font-weight: 600;
  border: 1px solid var(--ttb-border);
}

.ttb-flash--error {
  background: oklch(0.28 0.08 25 / 0.5);
  color: oklch(0.88 0.1 25);
  border-color: oklch(0.62 0.2 25 / 0.4);
}

.ttb-flash--success {
  background: oklch(0.26 0.06 145 / 0.5);
  color: oklch(0.88 0.08 145);
  border-color: oklch(0.58 0.14 145 / 0.4);
}