/* Reset, base typography and the app shell (DESIGN_SYSTEM.md sections 3, 6, 7.7 and 10).
   Colours, spacing and sizes all come from tokens.css. The one breakpoint is 768px:
   desktop at 768px and wider, mobile below. */

/* ---- fonts: self-hosted, only the weights in use (section 12) ---- */

@font-face {
  font-family: "Inter";
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  src: url("/static/shared/fonts/inter-latin-400-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  src: url("/static/shared/fonts/inter-latin-600-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  src: url("/static/shared/fonts/inter-latin-700-normal.woff2") format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  src: url("/static/shared/fonts/jetbrains-mono-latin-600-normal.woff2") format("woff2");
}

/* ---- reset ---- */

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

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

body,
h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

/* ---- base typography (section 3) ---- */

body {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-page);
}

h1 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
}

h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
}

a:active {
  color: var(--accent-active);
}

/* Money and meter numbers (section 3). Always put the figure inside this class.
   They never break across two lines. */
.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Help text and captions */
.text-help {
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-secondary);
}

/* Small uppercase label above a title or figure */
.text-label {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* Kept for screen readers only */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---- focus (section 9): always visible, never removed ---- */

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---- motion (section 11): off for people who ask for it ---- */

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

/* ---- skip link (section 11): the first thing a keyboard user reaches ---- */

.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 100;
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  text-decoration: none;
  color: var(--accent);
  background: var(--bg-surface);
  border: 1px solid var(--border-control);
  border-radius: var(--radius-control);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---- app shell, desktop: sidebar on the left, content on the right ---- */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: var(--space-6) var(--space-4);
  overflow-y: auto;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
}

.sidebar-brand {
  display: block;
  padding: 0 var(--space-2) var(--space-6);
}

.sidebar-brand img {
  width: 104px;
  height: auto;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 48px;
  padding: 0 var(--space-4);
  font-weight: 400;
  text-decoration: none;
  color: var(--text-secondary);
  border-radius: var(--radius-control);
  transition: background-color 150ms ease;
}

.nav-item:hover {
  color: var(--text-secondary);
  background: var(--bg-surface-muted);
}

.nav-item[aria-current="page"] {
  font-weight: 700;
  color: var(--text-primary);
  background: var(--accent-soft);
}

/* the 3px accent bar on the active item */
.nav-item[aria-current="page"]::before {
  content: "";
  position: absolute;
  top: var(--space-2);
  bottom: var(--space-2);
  left: 0;
  width: 3px;
  background: var(--accent);
  border-radius: var(--radius-pill);
}

.sidebar-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.sidebar-user {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.content {
  min-width: 0;
  padding: var(--space-8);
  overflow-wrap: break-word;
}

.content-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  /* Lets a component ask how wide the content column is, not how wide the screen is
     (tables turn into cards when it is narrow, see components.css) */
  container-type: inline-size;
  container-name: page;
}

/* The mobile bars do not exist on desktop */
.topbar,
.bottom-nav {
  display: none;
}

/* ---- app shell, mobile: top bar, content, fixed bottom tab bar ---- */

@media (max-width: 767px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    display: none;
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
    padding: 0 var(--space-4);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
  }

  .topbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: var(--tap-min);
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
  }

  .topbar-brand img {
    width: auto;
    height: 32px;
  }

  /* Back button and Account button: at least 44px to tap */
  .topbar-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-width: var(--tap-min);
    min-height: var(--tap-min);
    font-weight: 600;
    text-decoration: none;
    color: var(--accent);
    border-radius: var(--radius-small);
  }

  .content {
    padding: var(--space-4);
    /* never hidden behind the fixed bottom bar */
    padding-bottom: calc(var(--bottom-bar-height) + env(safe-area-inset-bottom) + var(--space-4));
  }

  .bottom-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 10;
    display: flex;
    height: calc(var(--bottom-bar-height) + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
  }

  .tab {
    display: flex;
    flex: 1 1 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    min-width: 0;
    min-height: var(--tap-min);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.3;
    text-decoration: none;
    color: var(--text-secondary);
  }

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

  .tab[aria-current="page"] {
    font-weight: 700;
    color: var(--accent);
  }

  /* At 320px each tab is 64px wide, and a bold "Dashboard" is a little wider than that.
     Slightly closer letters keep the 12px label without it touching the next tab. */
  @media (max-width: 359px) {
    .tab {
      letter-spacing: -0.03em;
    }
  }

  h1 {
    font-size: 24px;
  }
}