/* ========================================
   MOTIF LANDING PAGE — STYLES
   ======================================== */

/* ========================================
   1. CUSTOM PROPERTIES (matches app theme)
   ======================================== */
:root {
  /* Surfaces */
  --color-bg: #1C1C19;
  --color-surface: #242421;
  --color-surface-hover: #2c2c28;
  --color-border: #363632;

  /* Text */
  --color-text-primary: #edebe6;
  --color-text-secondary: #9a9890;
  --color-text-muted: #636158;

  /* Accent */
  --color-accent: #E1AF42;
  --color-accent-hover: #eabc58;
  --color-accent-subtle: rgba(225, 175, 66, 0.12);

  /* Functional */
  --color-danger: #d44040;
  --color-success: #4a9d6e;

  /* Typography */
  --font-body: 'Outfit', system-ui, sans-serif;
  --font-display: 'JetBrains Mono', monospace;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.75rem;
  --line-height-body: 1.7;
  --line-height-heading: 1.2;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-section: 6rem;

  /* Layout */
  --max-width: 1120px;
  --nav-height: 72px;

  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* ========================================
   2. RESET & BASE
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ========================================
   3. TYPOGRAPHY
   ======================================== */
h1, h2, h3 {
  color: var(--color-text-primary);
  line-height: var(--line-height-heading);
  font-weight: 700;
}

h1 {
  font-size: var(--font-size-2xl);
}

h2 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

/* ========================================
   4. LAYOUT UTILITIES
   ======================================== */
.container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========================================
   5. BUTTONS
   ======================================== */
.btn-primary {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  text-align: center;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-nav {
  font-size: var(--font-size-sm);
  padding: 0.5rem 1.25rem;
}

/* ========================================
   6. NAVIGATION
   ======================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(28, 28, 25, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  height: 48px;
  width: auto;
}

/* Hamburger toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Nav links — mobile */
.nav-links {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  flex-direction: column;
  align-items: center;
  padding: var(--space-lg) 0;
  gap: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.nav-links.is-open {
  display: flex;
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* ========================================
   7. HERO SECTION
   ======================================== */
.hero {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  text-align: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-headline {
  font-size: var(--font-size-2xl);
  max-width: 720px;
}

.hero-subheadline {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-top: var(--space-md);
  margin-bottom: 0;
}

.hero-cta {
  margin-top: var(--space-lg);
}

.hero-screenshot {
  margin-top: var(--space-2xl);
}

/* ========================================
   8. PROBLEM SECTION
   ======================================== */
.problem {
  background-color: var(--color-surface);
}

.problem-inner {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.problem .section-heading {
  margin-bottom: var(--space-lg);
}

.section-heading {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
}

.problem-body p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-body);
  margin-bottom: 1.5em;
}

.problem-body p:last-child {
  margin-bottom: 0;
}

.problem-tagline {
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
}

/* ========================================
   9. FEATURES SECTION
   ======================================== */
.features {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.feature-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-text {
  flex: 1;
}

.feature-heading {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.feature-text p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-body);
}

.feature-image {
  flex: 1;
}

/* ========================================
   10. WHO IT'S FOR SECTION
   ======================================== */
.who-its-for {
  background-color: var(--color-surface);
}

.who-inner {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.who-inner .section-heading {
  margin-bottom: var(--space-lg);
}

.who-body p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-body);
  margin-bottom: 1.5em;
}

.who-body p:last-child {
  margin-bottom: 0;
}

/* ========================================
   11. FOOTER CTA SECTION
   ======================================== */
.footer-cta {
  text-align: center;
}

.footer-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.footer-cta-inner .section-heading {
  margin-bottom: 0;
}

.footer-cta-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ========================================
   12. FOOTER
   ======================================== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer-credit {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================================
   13. SCREENSHOT PLACEHOLDER
   ======================================== */
.screenshot-placeholder {
  aspect-ratio: 16 / 10;
  max-width: 640px;
  width: 100%;
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
}

.screenshot-placeholder .screenshot-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ========================================
   14. BEHIND THE BUILD — PLACEHOLDER PAGE
   ======================================== */
.btb-placeholder {
  text-align: center;
  min-height: calc(100vh - var(--nav-height) - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btb-placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.btb-placeholder-inner p {
  color: var(--color-text-secondary);
}

/* ========================================
   15. RESPONSIVE — TABLET (640px+)
   ======================================== */
@media (min-width: 640px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  h1,
  .hero-headline {
    font-size: var(--font-size-3xl);
  }

  h2,
  .section-heading {
    font-size: var(--font-size-2xl);
  }

  .feature-heading {
    font-size: var(--font-size-2xl);
  }
}

/* ========================================
   16. RESPONSIVE — DESKTOP (1024px+)
   ======================================== */
@media (min-width: 1024px) {
  /* Nav: show links inline, hide hamburger */
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    flex-direction: row;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0;
    border: none;
    gap: var(--space-lg);
    align-items: center;
  }

  /* Features: side-by-side with alternating layout */
  .feature-block {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2xl);
  }

  .feature-block:nth-child(even) {
    flex-direction: row-reverse;
  }

  /* Footer: horizontal layout */
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}