/* ==========================================================================
   LunaFlow — Stylesheet
   Structure:
     1. Design tokens
     2. Reset & base
     3. Typography
     4. Layout utilities
     5. Buttons & badges
     6. Header / navigation
     7. Hero
     8. Mission
     9. Values
     10. Projects
     11. Contact
     12. Footer
     13. Scroll-reveal animations
     14. Reduced motion & accessibility
     15. Responsive breakpoints
   ========================================================================== */

/* -------------------------------------------------------------------------
   1. Design tokens
   ------------------------------------------------------------------------- */
:root {
  /* Color — night-sky base with the logo's pink-to-periwinkle gradient */
  --color-bg: #0c0a16;
  --color-bg-soft: #110e1e;
  --color-surface: #161228;
  --color-surface-2: #1b1730;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.14);

  --color-text: #f4f2fa;
  --color-text-secondary: #b6b0d4;
  --color-text-tertiary: #7c76a0;

  --color-pink: #ff9ec4;
  --color-orchid: #c48cec;
  --color-periwinkle: #8d7bf2;

  --gradient-brand: linear-gradient(135deg, var(--color-pink) 0%, var(--color-orchid) 52%, var(--color-periwinkle) 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(255, 158, 196, 0.16) 0%, rgba(196, 140, 236, 0.16) 52%, rgba(141, 123, 242, 0.16) 100%);

  --color-available-bg: rgba(122, 224, 175, 0.14);
  --color-available-text: #86e6b4;
  --color-soon-bg: rgba(247, 197, 122, 0.14);
  --color-soon-text: #f8cd8c;
  --color-preview-bg: rgba(196, 140, 236, 0.16);
  --color-preview-text: #d3aef4;
  --color-planned-bg: rgba(182, 176, 212, 0.12);
  --color-planned-text: #b6b0d4;

  /* Type */
  --font-display: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  /* Layout */
  --container-width: 1120px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 6rem;

  --shadow-soft: 0 20px 60px -20px rgba(141, 123, 242, 0.25);
  --shadow-card: 0 12px 40px -16px rgba(10, 8, 20, 0.6);

  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 180ms;
  --duration-base: 420ms;
  --duration-slow: 700ms;

  --header-height: 76px;
  --header-height-scrolled: 64px;
}

/* -------------------------------------------------------------------------
   2. Reset & base
   ------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

svg {
  display: block;
}

/* Anchor targets should not hide under the sticky header */
section[id] {
  scroll-margin-top: calc(var(--header-height) + 12px);
}

/* -------------------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
  color: var(--color-text-secondary);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-orchid);
  margin: 0 0 var(--space-sm);
}

.section-title {
  font-size: clamp(1.75rem, 1.4rem + 1.4vw, 2.5rem);
  margin-bottom: var(--space-md);
}

.center {
  text-align: center;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.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;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: var(--space-md);
  z-index: 1000;
  background: var(--color-surface-2);
  color: var(--color-text);
  padding: 0.6em 1.1em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-strong);
  transition: top var(--duration-fast) var(--ease-standard);
}

.skip-link:focus {
  top: var(--space-md);
}

/* -------------------------------------------------------------------------
   4. Layout utilities
   ------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

section {
  position: relative;
  padding-block: var(--space-2xl);
}

/* -------------------------------------------------------------------------
   5. Buttons & badges
   ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85em 1.6em;
  border-radius: var(--radius-pill);
  transition: transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              background var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px) scale(1.015);
}

.btn:active {
  transform: translateY(0) scale(0.99);
}

.btn:focus-visible {
  outline: 2px solid var(--color-periwinkle);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #14101f;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  box-shadow: 0 24px 70px -18px rgba(196, 140, 236, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}

.btn-secondary:hover {
  border-color: var(--color-orchid);
  background: var(--gradient-brand-soft);
}

.btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.35em 0.85em;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.badge-available {
  background: var(--color-available-bg);
  color: var(--color-available-text);
}

.badge-soon {
  background: var(--color-soon-bg);
  color: var(--color-soon-text);
}

.badge-preview {
  background: var(--color-preview-bg);
  color: var(--color-preview-text);
}

.badge-planned {
  background: var(--color-planned-bg);
  color: var(--color-planned-text);
}

/* -------------------------------------------------------------------------
   6. Header / navigation
   ------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(12, 10, 22, 0.4);
  border-bottom: 1px solid transparent;
  transition: height var(--duration-base) var(--ease-standard),
              background var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled {
  height: var(--header-height-scrolled);
  background: rgba(12, 10, 22, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--color-border);
  box-shadow: 0 8px 30px -16px rgba(0, 0, 0, 0.5);
}

.header-inner {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
}

.brand:focus-visible {
  outline: 2px solid var(--color-periwinkle);
  outline-offset: 4px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.brand:hover .brand-logo {
  transform: rotate(-8deg) scale(1.05);
}

.tm {
  font-size: 0.6em;
  vertical-align: super;
  color: var(--color-text-tertiary);
}

.site-nav {
  display: flex;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  position: relative;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  padding-block: 0.4em;
  transition: color var(--duration-fast) var(--ease-standard);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1.5px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-standard);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-periwinkle);
  outline-offset: 4px;
  border-radius: 4px;
}

.nav-link.is-active {
  color: var(--color-text);
}

.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-periwinkle);
  outline-offset: 2px;
}

.nav-toggle-bar {
  width: 20px;
  height: 1.6px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-standard),
              opacity var(--duration-fast) var(--ease-standard);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6.6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6.6px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(14, 11, 24, 0.97);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled + .mobile-menu,
.mobile-menu {
  top: var(--header-height);
}

.mobile-menu.is-open {
  max-height: 420px;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.mobile-nav-list a {
  display: block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  padding: 0.85em 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-list a:hover,
.mobile-nav-list a:focus-visible {
  color: var(--color-text);
}

.mobile-nav-list li:last-child a {
  border-bottom: none;
}

/* -------------------------------------------------------------------------
   7. Hero
   ------------------------------------------------------------------------- */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + var(--space-xl));
  overflow: hidden;
}

.hero-ambient {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
}

.hero-glow--pink {
  width: 480px;
  height: 480px;
  background: var(--color-pink);
  top: -160px;
  right: -100px;
}

.hero-glow--purple {
  width: 520px;
  height: 520px;
  background: var(--color-periwinkle);
  bottom: -220px;
  left: -160px;
  opacity: 0.28;
}

.hero-crescent {
  position: absolute;
  top: 8%;
  right: 4%;
  width: min(46vw, 560px);
  height: min(46vw, 560px);
  opacity: 0.16;
  animation: crescent-drift 26s ease-in-out infinite;
}

.hero-stars {
  position: absolute;
  inset: 0;
}

.hero-star {
  position: absolute;
  width: 2.5px;
  height: 2.5px;
  border-radius: 50%;
  background: #fff;
  opacity: 0.5;
  animation: twinkle 4.5s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-title {
  font-size: clamp(2.4rem, 1.9rem + 2.6vw, 4.1rem);
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.15rem);
  max-width: 620px;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
}

/* -------------------------------------------------------------------------
   8. Mission
   ------------------------------------------------------------------------- */
.mission-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-2xl);
  align-items: center;
}

.mission-copy p {
  margin-bottom: var(--space-md);
}

.mission-copy p:last-child {
  margin-bottom: 0;
}

.mission-copy h2 {
  font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.2rem);
  margin-bottom: var(--space-md);
}

.mission-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.mission-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-brand-soft);
  opacity: 0.6;
  pointer-events: none;
}

.mission-card-mark {
  width: 44px;
  height: 44px;
  opacity: 0.9;
  margin-bottom: var(--space-md);
  position: relative;
}

.mission-card-quote {
  position: relative;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.mission-card-label {
  position: relative;
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

/* -------------------------------------------------------------------------
   9. Values
   ------------------------------------------------------------------------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  transition: transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-border-strong);
}

.value-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--gradient-brand-soft);
  color: var(--color-orchid);
  margin-bottom: var(--space-md);
}

.value-icon svg {
  width: 22px;
  height: 22px;
}

.value-card h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-xs);
}

.value-card p {
  font-size: 0.92rem;
}

/* -------------------------------------------------------------------------
   10. Projects
   ------------------------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-border-strong);
}

.project-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.project-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  color: var(--color-pink);
}

.project-icon svg {
  width: 22px;
  height: 22px;
}

.project-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.project-card p {
  font-size: 0.94rem;
  flex-grow: 1;
  margin-bottom: var(--space-lg);
}

.project-card .btn {
  align-self: flex-start;
}

/* -------------------------------------------------------------------------
   11. Contact
   ------------------------------------------------------------------------- */
.contact-inner {
  max-width: 560px;
  text-align: center;
  margin-inline: auto;
}

.contact-copy {
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
}

.contact-email {
  margin-top: var(--space-md);
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-text-tertiary);
}

/* -------------------------------------------------------------------------
   12. Footer
   ------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-xl) var(--space-lg);
  background: var(--color-bg-soft);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.footer-brand .brand {
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-size: 0.9rem;
  max-width: 280px;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-standard);
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--color-text);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  align-items: flex-start;
  font-size: 0.88rem;
  color: var(--color-text-tertiary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

/* -------------------------------------------------------------------------
   13. Scroll-reveal animations
   ------------------------------------------------------------------------- */
.hero-content {
  opacity: 0;
  transform: translateY(14px);
  animation: hero-in var(--duration-slow) var(--ease-standard) 120ms forwards;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.reveal-stagger.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes hero-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes crescent-drift {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-14px) rotate(2deg); }
}

@keyframes twinkle {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.75; }
}

/* -------------------------------------------------------------------------
   14. Reduced motion & accessibility
   ------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .hero-content,
  .reveal,
  .reveal-stagger {
    opacity: 1;
    transform: none;
  }

  .hero-crescent,
  .hero-star {
    animation: none;
  }
}

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

/* -------------------------------------------------------------------------
   15. Responsive breakpoints
   ------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .mission-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .mission-visual {
    order: -1;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  :root {
    --space-2xl: 4rem;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-bottom: var(--space-2xl);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    justify-content: center;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-md);
  }

  .header-inner {
    padding-inline: var(--space-md);
  }

  .brand-name {
    font-size: 0.98rem;
  }
}