@layer reset, base, components, layout, app, marketing, utilities, animations;

:root {
  --white: #ffffff;
  --card: var(--white);
  --ink: #1f242c;
  --muted: #4f5d6b;
  --line: #dde3ea;
  --line-strong: #aeb8c8;
  --primary: #126fc4;
  --primary-hover: #0b579e;
  --button: var(--primary);
  --button-text: var(--white);
  --danger: #c62a38;

  --brand-field: #3793fe;
  --sidebar-background: #f5f5f5;
  --blue: #eaf4ff;
  --blue-dark: #b9dcff;
  --progress: #c8f133;
  --peach: #fff0f1;

  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --radius-lg: 1rem;
  --radius-pill: 999px;
  --shadow-lift: 0 6px 8px rgba(31, 36, 44, 0.14);
  --focus-ring: 3px solid var(--ink);
  --focus-ring-soft: 0 0 0 3px rgb(18 111 196 / 20%);
  --font-sans: "Manrope", ui-sans-serif, system-ui, sans-serif;

  --type-support: 0.9rem;
  --type-control: 0.95rem;
  --type-caption: 0.85rem;
  --type-callout: 1.1rem;
  --type-title: 1.25rem;
}

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { color-scheme: light; }
  body, h1, h2, h3, p { margin: 0; }
  img { display: block; max-width: 100%; }
  button, input, textarea { font: inherit; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
}

@layer base {
  body {
    min-height: 100vh;
    background: var(--card);
    color: var(--ink);
    font-family: var(--font-sans);
    font-weight: 500;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  turbo-frame[busy] { cursor: progress; }

  turbo-frame[busy]::before {
    position: fixed;
    z-index: 1000;
    inset: 0 0 auto;
    height: 3px;
    background: var(--primary);
    content: "";
    animation: loading-progress 1.2s ease-in-out infinite;
  }

  a { color: inherit; text-decoration: none; }

  h1, h2, h3, h4 {
    font-family: var(--font-sans);
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.04;
    text-wrap: balance;
  }

  h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); }
  h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
  h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
  p { color: var(--muted); }

  input, textarea {
    width: 100%;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: var(--card);
    color: var(--ink);
    padding: 0.85rem 1rem;
    outline: none;
    font-size: 0.95rem;
  }

  input:focus, textarea:focus {
    border-color: var(--ink);
    box-shadow: var(--focus-ring-soft);
  }
}

@layer components {
  .container { width: min(1160px, calc(100% - 2rem)); margin-inline: auto; }
  .page { min-height: calc(100vh - 12rem); padding-block: 1.5rem; }

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

  .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    min-height: 2.75rem;
    padding: 0.65rem 1.35rem;
    border-radius: var(--radius-pill);
    background: var(--button);
    color: var(--button-text);
    font-weight: 800;
    font-size: 0.95rem;
    cursor: pointer;
    border: 1px solid var(--button);
  }

  .button:hover {
    border-color: var(--ink);
  }

  .button.secondary {
    background: transparent;
    color: var(--ink);
    border-color: var(--line-strong);
  }

  .button.secondary:hover {
    border-color: var(--ink);
    background: var(--blue);
  }

  .button.small { min-height: 2.35rem; padding: 0.45rem 1rem; font-size: 0.88rem; }
  .button.full { width: 100%; }
  .button.danger { background: var(--danger); border-color: var(--danger); }
  .link-button { border: 0; background: transparent; color: inherit; padding: 0; cursor: pointer; font: inherit; }

  .actions { display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; }
  .split { display: flex; justify-content: space-between; align-items: flex-start; gap: 1.5rem; }
  .field { display: grid; gap: 0.45rem; }
  .field label { font-weight: 700; font-size: var(--type-support); }
  .text-link, .text-button { color: var(--primary-hover); font-weight: 800; text-decoration: underline; text-underline-offset: 3px; }

  :where(.button, a, button, input, textarea, select, summary):focus-visible {
    outline: var(--focus-ring);
    outline-offset: 3px;
  }
}

@layer layout {
  .site-header {
    position: sticky;
    z-index: 50;
    top: 0.75rem;
    display: flex;
    justify-content: center;
    padding-inline: 1rem;
    pointer-events: none;
  }

  .site-header-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    width: fit-content;
    max-width: min(1160px, 100%);
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-pill);
    background: #ffffff;
    pointer-events: auto;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: var(--type-callout);
    letter-spacing: -0.02em;
  }

  .brand img { border-radius: var(--radius-sm); }

  .site-header nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--type-support);
    font-weight: 700;
  }

  .mobile-nav { display: none; position: relative; }
  .mobile-nav summary { display: flex; align-items: center; min-height: 2.75rem; cursor: pointer; list-style: none; padding: 0.4rem 0.55rem; border-radius: var(--radius-pill); }
  .mobile-nav summary::-webkit-details-marker { display: none; }
  .mobile-nav[open] > div { position: absolute; top: calc(100% + 0.5rem); right: 0; min-width: 7rem; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.5rem; background: #ffffff; }
  .mobile-nav[open] a { display: block; padding: 0.4rem; }

  .site-header nav > a:not(.button),
  .site-header nav > form > .link-button {
    padding: 0.4rem 0.7rem;
    border-radius: var(--radius-pill);
    transition: background 0.2s ease;
  }

  .site-header nav > a:not(.button):hover,
  .site-header nav > form > .link-button:hover {
    background: var(--blue);
  }

  .site-header nav > form > .link-button {
    font-size: var(--type-support);
    font-weight: 700;
  }

  .site-header form { display: contents; }

  .app-layout { display: grid; grid-template-columns: 16rem minmax(0, 1fr); gap: 1rem; min-height: 100vh; padding: 1rem; transition: grid-template-columns 260ms cubic-bezier(.22, 1, .36, 1); }
  .app-layout:has(.app-sidebar.is-collapsed) { grid-template-columns: 4.5rem minmax(0, 1fr); }
  .app-shell { background: var(--card); }
  .app-main { min-width: 0; }
  .app-sidebar { position: sticky; top: 1rem; display: flex; flex-direction: column; justify-content: space-between; min-height: calc(100vh - 2rem); max-height: calc(100vh - 2rem); overflow-y: auto; border-radius: var(--radius-lg); background: var(--sidebar-background); padding: 1.5rem 1rem; transition: padding 260ms cubic-bezier(.22, 1, .36, 1); }
  .app-sidebar-header { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
  .app-sidebar .brand { min-width: 0; width: fit-content; padding-inline: 0.5rem; transition: transform 260ms cubic-bezier(.22, 1, .36, 1); }
  .app-sidebar .brand img { object-fit: contain; }
  .sidebar-toggle { display: grid; width: 2rem; height: 2rem; flex: 0 0 auto; place-items: center; border: 0; border-radius: 50%; background: transparent; color: var(--muted); font: inherit; font-size: 1.1rem; cursor: pointer; transition: background 180ms ease, color 180ms ease, transform 260ms cubic-bezier(.22, 1, .36, 1); }
  .sidebar-toggle img[hidden] { display: none; }
  .sidebar-toggle:hover { background: var(--blue); color: var(--ink); transform: scale(1.1); }
  .app-sidebar-nav { display: grid; gap: 0.5rem; margin-top: 2.5rem; }
  .app-nav-link { display: flex; align-items: center; gap: 0.75rem; min-height: 3rem; overflow: hidden; border-radius: var(--radius-sm); padding: 0.75rem; color: var(--ink); font-size: var(--type-support); font-weight: 800; transition: background 180ms cubic-bezier(.22, 1, .36, 1), gap 260ms cubic-bezier(.22, 1, .36, 1), padding 260ms cubic-bezier(.22, 1, .36, 1); }
  .app-nav-link:hover { background: var(--blue); }
  .app-nav-link.active { background: var(--progress); }
  .app-nav-link > img { width: 1.25rem; height: 1.25rem; }
  .app-sidebar-bottom { display: grid; gap: 1rem; margin-top: 2.5rem; }
  .app-sidebar-plan { display: grid; gap: 0.35rem; border-radius: var(--radius); background: var(--blue); padding: 1rem; }
  .app-sidebar-plan strong { font-size: var(--type-support); }
  .app-sidebar-plan span { color: var(--muted); font-size: var(--type-caption); }
  .app-sidebar-plan a { width: fit-content; margin-top: 0.35rem; font-size: 0.8rem; }
  .app-mobile-header { display: none; }
  .app-sidebar.is-collapsed { padding-inline: 0.75rem; }
  .app-sidebar.is-collapsed .app-sidebar-header { justify-content: center; flex-direction: column; }
  .app-sidebar.is-collapsed .brand { transform: translateX(-0.1rem); }
  .app-sidebar.is-collapsed .brand span, .app-sidebar.is-collapsed .app-nav-link span, .app-sidebar.is-collapsed .app-sidebar-plan { display: none; }
  .app-sidebar.is-collapsed .app-nav-link { justify-content: center; padding-inline: 0.5rem; }
  .app-sidebar.is-collapsed .sidebar-toggle span { display: inline-block; transform: none; }
  .user-avatar { width: 2rem; height: 2rem; border-radius: 50%; object-fit: cover; }
  .user-avatar-initials { display: grid; flex: 0 0 auto; place-items: center; background: var(--ink); color: white; font-size: 0.8125rem; font-weight: 600; }

  .site-footer {
    border-top: 1px solid var(--line);
    padding-block: 2.5rem;
  }

  .site-footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    width: min(1160px, calc(100% - 2rem));
    margin-inline: auto;
    flex-wrap: wrap;
  }

  .footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 700;
  }

  .footer-brand img { border-radius: 0.5rem; }
  .footer-links { display: flex; gap: 1.25rem; font-size: var(--type-support); color: var(--muted); }
  .footer-links a:hover { color: var(--ink); }
  .footer-copy { font-size: var(--type-caption); color: var(--muted); margin-left: auto; }

  .flash {
    position: fixed;
    z-index: 60;
    top: 5.5rem;
    left: 50%;
    transform: translateX(-50%);
    border-radius: var(--radius-pill);
    padding: 0.75rem 1.25rem;
    box-shadow: var(--shadow-lift);
    font-weight: 500;
    font-size: var(--type-support);
    transition: opacity 200ms ease, transform 200ms ease;
  }

  .flash.dismissing { opacity: 0; transform: translate(-50%, -0.5rem); }
  .flash.notice { background: var(--progress); color: var(--ink); }
  .flash.alert { background: var(--danger); color: white; }

  @media (max-width: 900px) {
    .app-layout { display: block; padding: 0; }
    .app-sidebar { display: none; }
    .app-mobile-header { position: sticky; z-index: 50; top: 0; display: flex; align-items: center; justify-content: space-between; min-height: 4rem; border-bottom: 1px solid var(--line); background: #ffffff; padding: 0.5rem 1rem; }
    .app-mobile-nav { position: relative; }
    .app-mobile-nav summary { display: flex; align-items: center; gap: 0.5rem; min-height: 2.75rem; cursor: pointer; list-style: none; font-size: 0.82rem; font-weight: 800; }
    .app-mobile-nav summary::-webkit-details-marker { display: none; }
    .app-mobile-nav[open] > div { position: absolute; z-index: 51; top: calc(100% + 0.5rem); right: 0; display: grid; min-width: 12rem; border: 1px solid var(--line); border-radius: var(--radius); background: #ffffff; padding: 0.5rem; box-shadow: var(--shadow-lift); }
    .app-mobile-nav[open] a, .app-mobile-nav[open] form .link-button { display: flex; width: 100%; min-height: 2.75rem; align-items: center; border-radius: var(--radius-sm); padding: 0.65rem 0.75rem; color: var(--ink); font-size: 0.88rem; font-weight: 700; }
    .app-mobile-nav[open] a:hover, .app-mobile-nav[open] form .link-button:hover { background: var(--blue); }
  }

  @media (prefers-reduced-motion: reduce) {
    .flash, .app-layout, .app-sidebar, .app-sidebar .brand, .sidebar-toggle, .app-nav-link { transition: none; }
  }
}

@layer utilities {
  @media (max-width: 900px) {
    .principles-grid, .pricing-preview-grid, .journey-steps { grid-template-columns: 1fr; }
    .site-header nav > a.desktop-nav-link, .site-header nav > a.sign-in-link, .site-header nav > form { display: none; }
    .mobile-nav { display: block; }
    .site-header nav .button { flex-shrink: 0; white-space: nowrap; }
    .site-header nav { gap: 0; }
    .site-header-inner { justify-content: space-between; }
    .split { align-items: stretch; flex-direction: column; }
    .footer-copy { margin-left: 0; }
  }

  @media (max-width: 560px) {
    .site-header { padding-inline: 0.75rem; }
    .site-header-inner { gap: 0.5rem; padding: 0.5rem 0.6rem; }
    .site-header nav { gap: 0.25rem; }
    .site-header nav .button { min-height: 2.75rem; padding-inline: 0.9rem; font-size: 0.8rem; white-space: nowrap; }
    .course-setup-card { padding: 1.25rem; }
    .message { max-width: 95%; }
    .site-footer-inner { flex-direction: column; align-items: flex-start; }
  }

  @media (max-width: 380px) {
    .site-header .brand span { display: none; }
  }
}

.nova-pixel { image-rendering: pixelated; object-fit: contain; }
.home-setup-preview > .nova-pixel { margin-bottom: 16px; }