/* ============================================================
   style.css — Alaska Automation Design Tokens & Components
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Rajdhani:wght@400;500;600;700&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --color-bg: #0C1B33;
  --color-bg-alt: #0A1628;
  --color-surface: #142644;
  --color-surface-hover: #1A3058;
  --color-accent: #D4A843;
  --color-accent-bright: #FFD700;
  --color-accent-dim: rgba(212, 168, 67, 0.15);
  --color-text: #FFFFFF;
  --color-text-muted: #8A9CB5;
  --color-text-faint: rgba(138, 156, 181, 0.5);
  --color-border: rgba(138, 156, 181, 0.12);
  --color-border-accent: rgba(212, 168, 67, 0.25);

  /* Typography */
  --font-display: 'Rajdhani', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Type Scale (fluid) */
  --text-xs: clamp(0.6875rem, 0.65rem + 0.15vw, 0.75rem);   /* 11-12px */
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);   /* 13-14px */
  --text-base: clamp(0.9375rem, 0.9rem + 0.18vw, 1rem);       /* 15-16px */
  --text-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem);       /* 17-19px */
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);         /* 20-24px */
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);         /* 24-36px */
  --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3.25rem);           /* 32-52px */
  --text-4xl: clamp(2.5rem, 1.75rem + 3.75vw, 4.5rem);        /* 40-72px */

  /* Spacing (4px base) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */
  --space-32: 8rem;    /* 128px */

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 900px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-glow-accent: 0 0 20px rgba(212, 168, 67, 0.2);
}


/* ============================================================
   Layout & Sections
   ============================================================ */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-accent);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  border-radius: 4px;
}
.skip-link:focus {
  top: var(--space-4);
}

section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) clamp(var(--space-4), 5vw, var(--space-8));
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.container--narrow {
  max-width: var(--max-width-narrow);
}


/* ============================================================
   Navigation
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(12, 27, 51, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: transform 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.nav--hidden {
  transform: translateY(-100%);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) clamp(var(--space-4), 5vw, var(--space-8));
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__logo-img {
  height: 36px;
  width: auto;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text);
}

.nav__logo-text span {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  cursor: pointer;
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-accent);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.nav__hamburger.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__hamburger.is-active span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav overlay */
.nav__mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(12, 27, 51, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-10);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}

.nav__mobile.is-open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-2xl);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  cursor: pointer;
}

.nav__mobile-link:hover,
.nav__mobile-link:focus-visible {
  color: var(--color-accent);
}


/* ============================================================
   Hero Section
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: var(--space-16);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.3;
}

.hero__star-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero__constellation {
  width: clamp(280px, 50vw, 520px);
  height: auto;
  margin-bottom: var(--space-4);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-4xl);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.1;
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: 300;
  letter-spacing: 0.05em;
  max-width: 500px;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 2;
}

.hero__scroll-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}


/* ============================================================
   Big Dipper SVG Styles
   ============================================================ */

.constellation-line {
  stroke: var(--color-accent);
  stroke-width: 1.5;
  opacity: 0.35;
}

.constellation-star {
  fill: var(--color-accent);
}

/*
 * Flowing pulse animation:
 * Total cycle = 6s. The pulse travels sequentially:
 *   Alkaid(1) -> Mizar(2) -> Alioth(3) -> Megrez(4)
 *   -> Dubhe(5) -> Merak(6) -> Phecda(7) -> Polaris(8)
 *
 * Each star gets a brief window where its glow peaks,
 * creating the illusion of energy flowing through the constellation.
 *
 * 8 stars across 6s = ~0.55s spacing between peaks.
 * Each star's pulse lasts ~1.2s (rise + fall), overlapping
 * the next for a smooth traveling wave.
 */

.constellation-star-glow {
  fill: var(--color-accent-bright);
  opacity: 0;
  animation: starPulse 6s ease-in-out infinite;
}

/* Staggered delays — handle to bowl to Polaris */
.star-delay-1 { animation-delay: 0s; }      /* Alkaid (handle tip) */
.star-delay-2 { animation-delay: 0.55s; }   /* Mizar */
.star-delay-3 { animation-delay: 1.1s; }    /* Alioth */
.star-delay-4 { animation-delay: 1.65s; }   /* Megrez (bowl start) */
.star-delay-5 { animation-delay: 2.2s; }    /* Dubhe (pointer) */
.star-delay-6 { animation-delay: 2.75s; }   /* Merak (pointer) */
.star-delay-7 { animation-delay: 3.3s; }    /* Phecda */

@keyframes starPulse {
  0%   { opacity: 0; transform: scale(1); }
  8%   { opacity: 0.6; transform: scale(1.6); }
  16%  { opacity: 0; transform: scale(1); }
  100% { opacity: 0; transform: scale(1); }
}

/* Polaris — receives the pulse at the end, brighter & longer bloom */
.constellation-star-glow--polaris {
  fill: var(--color-accent-bright);
  opacity: 0;
  animation: polarisPulse 6s ease-in-out infinite;
  animation-delay: 3.85s;
}

.constellation-star--polaris {
  fill: var(--color-accent-bright);
}

@keyframes polarisPulse {
  0%   { opacity: 0.1; transform: scale(1); }
  10%  { opacity: 0.8; transform: scale(1.7); }
  25%  { opacity: 0.15; transform: scale(1.1); }
  100% { opacity: 0.1; transform: scale(1); }
}

/* Flowing line pulse — lines brighten as the pulse passes through */
.constellation-line--flow {
  opacity: 0.25;
  animation: linePulse 6s ease-in-out infinite;
}

.line-delay-1 { animation-delay: 0.25s; }    /* Alkaid -> Mizar */
.line-delay-2 { animation-delay: 0.8s; }     /* Mizar -> Alioth */
.line-delay-3 { animation-delay: 1.35s; }    /* Alioth -> Megrez */
.line-delay-4 { animation-delay: 1.9s; }     /* Megrez -> Dubhe */
.line-delay-5 { animation-delay: 2.45s; }    /* Dubhe -> Merak */
.line-delay-6 { animation-delay: 3.0s; }     /* Merak -> Phecda */
.line-delay-7 { animation-delay: 3.55s; }    /* Phecda -> Megrez (closing bowl) */

@keyframes linePulse {
  0%   { opacity: 0.25; stroke-width: 1.5; }
  8%   { opacity: 0.85; stroke-width: 2.5; }
  16%  { opacity: 0.25; stroke-width: 1.5; }
  100% { opacity: 0.25; stroke-width: 1.5; }
}

/* Pointer line pulse — fires after the bowl completes */
.constellation-line--pointer {
  stroke: var(--color-accent);
  stroke-width: 1;
  opacity: 0.1;
  animation: pointerPulse 6s ease-in-out infinite;
  animation-delay: 3.5s;
}

@keyframes pointerPulse {
  0%   { opacity: 0.1; }
  10%  { opacity: 0.35; }
  25%  { opacity: 0.1; }
  100% { opacity: 0.1; }
}


/* ============================================================
   Section Headings
   ============================================================ */

.section-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-3xl);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.15;
  margin-bottom: var(--space-6);
}

.section-desc {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 65ch;
}


/* ============================================================
   About Section
   ============================================================ */

.about {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.about__text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  max-width: 65ch;
}

.about__highlight {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.about__highlight svg {
  flex-shrink: 0;
}


/* ============================================================
   Services Section
   ============================================================ */

.services {
  background: var(--color-bg-alt);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: var(--space-8);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.service-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-glow-accent);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
}

.service-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.service-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}


/* ============================================================
   Projects Section
   ============================================================ */

.projects {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: var(--space-8);
  transition: border-color var(--transition-interactive);
}

.project-card:hover {
  border-color: var(--color-border-accent);
}

.project-card__location {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.project-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.project-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}


/* ============================================================
   Team Section
   ============================================================ */

.team {
  background: var(--color-bg-alt);
}

.team__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: var(--space-6);
  text-align: center;
}

.team-card__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-accent-dim);
  border: 2px solid var(--color-border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-accent);
}

.team-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.team-card__role {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.team-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.team-card__credential {
  display: inline-block;
  margin-top: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: 3px;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}


/* ============================================================
   Contact Section
   ============================================================ */

.contact {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.contact__cta {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 50ch;
  margin: 0 auto var(--space-8);
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: background var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
  cursor: pointer;
}

.contact__email:hover {
  background: var(--color-accent-bright);
  box-shadow: var(--shadow-glow-accent);
  transform: translateY(-1px);
}

.contact__email:active {
  transform: translateY(0);
}

.contact__location {
  margin-top: var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
}


/* ============================================================
   Footer
   ============================================================ */

.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) clamp(var(--space-4), 5vw, var(--space-8));
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.footer__brand span {
  color: var(--color-accent);
}

.footer__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer__link {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  transition: color var(--transition-interactive);
  cursor: pointer;
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__link--structure {
  color: #54fff5;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.footer__link--structure:hover {
  color: #6ac0bc;
}

.footer__copy {
  width: 100%;
  text-align: center;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}


/* ============================================================
   Scroll Animations (opacity only — no translateY)
   ============================================================ */

.fade-in {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    opacity: 0;
    transition: opacity 0.8s var(--ease-out);
  }
  .fade-in.is-visible {
    opacity: 1;
  }
  .fade-in-delay-1 { transition-delay: 0.1s; }
  .fade-in-delay-2 { transition-delay: 0.2s; }
  .fade-in-delay-3 { transition-delay: 0.3s; }
  .fade-in-delay-4 { transition-delay: 0.4s; }
  .fade-in-delay-5 { transition-delay: 0.5s; }
}


/* ============================================================
   Mobile Responsive
   ============================================================ */

@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }
  .nav__hamburger {
    display: flex;
  }

  .services__grid {
    grid-template-columns: 1fr;
  }
  .projects__grid {
    grid-template-columns: 1fr;
  }
  .team__grid {
    grid-template-columns: 1fr;
  }

  .hero__title {
    letter-spacing: 0.1em;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
  .footer__links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  section {
    padding: var(--space-12) var(--space-4);
  }
  .service-card {
    padding: var(--space-6);
  }
  .project-card {
    padding: var(--space-6);
  }
}