/* ========================================
   GuidedPioneer Design System
   Tokens
   ======================================== */
:root {
  --color-bg: #f7f7f5;
  --color-surface: #ffffff;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-border: #e5e5e7;
  --color-border-dashed: #d2d2d6;

  --color-accent: #2e6e9e;
  --color-accent-hover: #1f5580;
  --color-accent-soft: #dceefb;

  --brand-mark-glint: #ffd98a;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);

  --max-width: 1120px;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #000000;
    --color-surface: #1c1c1e;
    --color-text: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-border: #2e2e30;
    --color-border-dashed: #3a3a3c;

    --color-accent: #6fb3e0;
    --color-accent-hover: #8fc6ea;
    --color-accent-soft: #1c3040;

    --brand-mark-glint: #ffd98a;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
p {
  margin: 0;
}

button {
  font-family: inherit;
}

/* Focus visibility for keyboard users */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}

/* ========================================
   Layout
   ======================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

section {
  padding: var(--space-8) 0;
}

@media (max-width: 640px) {
  section {
    padding: var(--space-7) 0;
  }
}

/* ========================================
   Header / Nav
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-text);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-mark svg {
  width: 62%;
  height: 62%;
}

.brand-mark path {
  fill: var(--color-accent);
}

.brand-mark .glint {
  fill: var(--brand-mark-glint);
}

.main-nav ul {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3) var(--space-5) var(--space-5);
  }

  .main-nav a {
    display: block;
    padding: var(--space-3) 0;
  }
}

/* ========================================
   Hero
   ======================================== */
.hero {
  padding-top: var(--space-9);
  padding-bottom: var(--space-8);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 18ch;
  margin: 0 auto var(--space-5);
}

.hero .lede {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 46ch;
  margin: 0 auto;
}

.hero .lede strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ========================================
   Section headings
   ======================================== */
.section-head {
  margin-bottom: var(--space-6);
}

.section-head h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}

.section-head p {
  color: var(--color-text-secondary);
  max-width: 60ch;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

/* ========================================
   App grid (scalable module system)
   ======================================== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.app-grid .app-card--featured {
  grid-column: span 3;
}

@media (max-width: 860px) {
  .app-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .app-grid .app-card--featured {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .app-grid {
    grid-template-columns: 1fr;
  }
  .app-grid .app-card--featured {
    grid-column: span 1;
  }
}

/* Base card — every app, present or future, uses this shape */
.app-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.app-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-card-icon svg {
  width: 26px;
  height: 26px;
}

.app-card h3 {
  font-size: 1.1875rem;
  font-weight: 700;
}

.app-card .app-card-desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.app-card-status {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: 999px;
  padding: var(--space-1) var(--space-3);
  display: inline-block;
  width: fit-content;
}

/* Featured (Budget) variant */
.app-card--featured {
  padding: var(--space-7);
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-7);
  background: linear-gradient(
    135deg,
    var(--color-surface) 0%,
    var(--color-accent-soft) 180%
  );
}

.app-card--featured .app-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.app-card--featured .app-card-icon {
  width: 64px;
  height: 64px;
}

.app-card--featured .app-card-icon svg {
  width: 34px;
  height: 34px;
}

.app-card--featured h3 {
  font-size: 1.625rem;
}

.app-card--featured .app-card-desc {
  font-size: 1.0625rem;
  max-width: 52ch;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  margin-top: var(--space-1);
}

.feature-list li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.feature-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.app-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-top: var(--space-2);
}

@media (max-width: 640px) {
  .app-card--featured {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6);
  }
}

/* Placeholder ("coming soon") variant — same module, muted state */
.app-card--placeholder {
  border-style: dashed;
  border-color: var(--color-border-dashed);
  box-shadow: none;
  background: transparent;
  justify-content: center;
  align-items: flex-start;
  min-height: 100%;
}

.app-card--placeholder .app-card-icon {
  background: transparent;
  border: 1px dashed var(--color-border-dashed);
  color: var(--color-text-secondary);
}

.app-card--placeholder h3 {
  color: var(--color-text-secondary);
}

.app-card--placeholder .app-card-status {
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border-dashed);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-3) var(--space-5);
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
}

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

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

.btn-link {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
}

.btn-link:hover {
  text-decoration: underline;
}

/* ========================================
   Values / About strip
   ======================================== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 640px) {
  .values-grid {
    grid-template-columns: 1fr;
  }
}

.value-item h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.value-item p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ========================================
   Details / progressive disclosure
   ======================================== */
details.disclosure {
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) 0;
}

details.disclosure:last-child {
  border-bottom: 1px solid var(--color-border);
}

details.disclosure summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.0625rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

details.disclosure summary::-webkit-details-marker {
  display: none;
}

details.disclosure summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: transform 0.15s ease;
}

details.disclosure[open] summary::after {
  content: "\2212";
}

details.disclosure p {
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
  max-width: 65ch;
}

/* ========================================
   Breadcrumb / back link
   ======================================== */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-5);
}

.back-link:hover {
  color: var(--color-text);
}

/* ========================================
   App detail hero (Budget page)
   ======================================== */
.app-hero {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
}

.app-hero .app-card-icon {
  width: 72px;
  height: 72px;
}

.app-hero .app-card-icon svg {
  width: 38px;
  height: 38px;
}

.app-hero h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}

.app-hero .app-hero-tagline {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
}

@media (max-width: 560px) {
  .app-hero {
    flex-direction: column;
    align-items: flex-start;
  }
}

.screenshot-frame {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  color: var(--color-text-secondary);
  text-align: center;
  font-size: 0.9375rem;
}

.screenshot-placeholder {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border-dashed);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

@media (max-width: 720px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

.detail-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.detail-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.detail-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.cta-banner {
  background: var(--color-accent-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  text-align: center;
}

.cta-banner h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.cta-banner p {
  color: var(--color-text-secondary);
  max-width: 50ch;
  margin: 0 auto var(--space-5);
}

/* ========================================
   App Preview Collage (illustrative sample
   data only — never a real user's)
   ======================================== */
.app-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

@media (max-width: 720px) {
  .app-preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .app-preview-grid {
    grid-template-columns: 1fr;
  }
}

.app-preview-panel {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: left;
}

.app-preview-panel-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.app-preview-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  flex-shrink: 0;
}

.app-preview-icon svg {
  width: 16px;
  height: 16px;
}

.app-preview-panel-header h3 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
}

.app-preview-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  font-size: 0.8125rem;
  padding: var(--space-2) 0;
  border-top: 1px solid var(--color-border);
}

.app-preview-row:first-of-type {
  border-top: none;
  padding-top: 0;
}

.app-preview-row-label {
  color: var(--color-text-secondary);
}

.app-preview-row-value {
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.app-preview-bar-row {
  padding: var(--space-2) 0;
  border-top: 1px solid var(--color-border);
}

.app-preview-bar-row:first-of-type {
  border-top: none;
  padding-top: 0;
}

.app-preview-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.app-preview-bar-track {
  height: 6px;
  border-radius: 999px;
  background: var(--color-border);
  overflow: hidden;
}

.app-preview-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--color-accent);
}

.app-preview-stat {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.app-preview-stat-delta {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #1e8e5a;
  margin: var(--space-1) 0 var(--space-3);
}

@media (prefers-color-scheme: dark) {
  .app-preview-stat-delta {
    color: #4ade80;
  }
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.site-footer p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: var(--space-5);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ========================================
   Utility
   ======================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}