/* ============================================================
   SPIR Limited — Coming Soon
   style.css
   ============================================================ */

/* --- Design Tokens ----------------------------------------- */
:root {
  --forest:     #2E5E4E;
  --olive:      #556B2F;
  --sand:       #E8DDC8;
  --stone:      #D9D4C7;
  --earth:      #3E3A36;
  --white:      #F8F8F5;
  --copper:     #C58C47;
  --copper-dim: rgba(197,140,71,.12);

  --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;

  --ease-out: cubic-bezier(.22,1,.36,1);
  --ease-smooth: cubic-bezier(.4,0,.2,1);
}


/* --- Dark Theme Overrides ---------------------------------- */
[data-theme="dark"] {
  --forest:     #4A9B80;
  --olive:      #8AAD5A;
  --sand:       #3A3530;
  --stone:      #2E2A26;
  --earth:      #E8E4DF;
  --white:      #161412;
  --copper:     #D4A05A;
  --copper-dim: rgba(212,160,90,.15);
}

[data-theme="dark"] .bg__gradient {
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(74,155,128,.1), transparent 70%),
    radial-gradient(ellipse 70% 50% at 80% 70%, rgba(138,173,90,.07), transparent 65%),
    radial-gradient(ellipse 90% 70% at 50% 50%, rgba(212,160,90,.05), transparent 60%);
}

[data-theme="dark"] .bg__glow {
  background: radial-gradient(ellipse 100% 80% at 50% 40%, rgba(212,160,90,.1), transparent 70%);
}

[data-theme="dark"] .logo-placeholder {
  color: var(--earth);
  border-color: var(--earth);
}

[data-theme="dark"] .cta-btn {
  background: var(--forest);
  color: var(--white);
}

[data-theme="dark"] .cta-btn:hover,
[data-theme="dark"] .cta-btn:focus-visible {
  background: #5BB899;
}

[data-theme="dark"] .divider-line--wide {
  background: linear-gradient(90deg, transparent, var(--stone), transparent);
}


/* --- Reset & Base ------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--earth);
  background-color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection {
  background: var(--copper-dim);
  color: var(--earth);
}


/* --- Skip Link --------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: .6em 1.2em;
  background: var(--forest);
  color: var(--white);
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 6px 0;
}

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


/* --- Animated Background ----------------------------------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg__gradient {
  position: absolute;
  inset: -30%;
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(46,94,78,.08), transparent 70%),
    radial-gradient(ellipse 70% 50% at 80% 70%, rgba(85,107,47,.06), transparent 65%),
    radial-gradient(ellipse 90% 70% at 50% 50%, rgba(197,140,71,.04), transparent 60%);
  animation: gradientDrift 30s var(--ease-smooth) infinite alternate;
  will-change: transform;
}

@keyframes gradientDrift {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(-3%, 2%) scale(1.03); }
  66%  { transform: translate(2%, -2%) scale(.98); }
  100% { transform: translate(-1%, 1%) scale(1.01); }
}

/* Film-grain texture via CSS — no external image */
.bg__grain {
  position: absolute;
  inset: -50%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.04'/%3E%3C/svg%3E");
  background-repeat: repeat;
  opacity: .55;
  animation: grainShift 8s steps(10) infinite;
}

@keyframes grainShift {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(-10%, -10%); }
}

.bg__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Ambient glow for the easter-egg light sweep */
.bg__glow {
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(ellipse 100% 80% at 50% 40%, rgba(197,140,71,.07), transparent 70%);
  transition: opacity 3s var(--ease-smooth);
  will-change: opacity;
}

.bg__glow--active {
  opacity: 1;
}


/* --- Layout Wrapper ---------------------------------------- */
.header,
.main,
.footer {
  position: relative;
  z-index: 1;
}


/* --- Header / Logo ----------------------------------------- */
.header {
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.5rem, 5vw, 4rem);
  text-align: center;
}

.logo-placeholder {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(.72rem, 1vw, .85rem);
  letter-spacing: .35em;
  text-transform: uppercase;
  color: var(--forest);
  padding: .7em 1.6em;
  border: 1.5px solid var(--forest);
  border-radius: 2px;
  user-select: none;
}

/* --- Floating Theme Toggle --------------------------------- */
.theme-toggle {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  top: clamp(1.2rem, 3vw, 2rem);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: var(--white);
  border: 1.5px solid var(--stone);
  border-radius: 50%;
  cursor: pointer;
  color: var(--earth);
  transition:
    color .4s var(--ease-smooth),
    border-color .4s var(--ease-smooth),
    background .4s var(--ease-smooth),
    transform .3s var(--ease-out),
    opacity .6s var(--ease-out);
  opacity: 0;
  animation: fadeToggleIn .8s var(--ease-out) .3s forwards;
}

@keyframes fadeToggleIn {
  to { opacity: 1; }
}

.theme-toggle:hover {
  border-color: var(--copper);
  color: var(--copper);
  transform: scale(1.1);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

.theme-toggle:active {
  transform: scale(.92);
}

/* In light mode: show moon, hide sun */
.theme-toggle__icon--sun  { display: none; }
.theme-toggle__icon--moon { display: block; }

/* In dark mode: show sun, hide moon */
[data-theme="dark"] .theme-toggle__icon--sun  { display: block; }
[data-theme="dark"] .theme-toggle__icon--moon { display: none; }


/* --- Hero -------------------------------------------------- */
.hero {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(2rem, 8vw, 6rem) clamp(1.5rem, 5vw, 4rem);
}

.hero__inner {
  max-width: 52rem;
  text-align: center;
}

/* Decorative divider */
.hero__divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.divider-line {
  display: block;
  width: clamp(2rem, 6vw, 4rem);
  height: 1px;
  background: var(--copper);
  opacity: .5;
}

.divider-dot {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--copper);
  opacity: .6;
}

/* Heading */
.hero__heading {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  line-height: 1.15;
  color: var(--earth);
  letter-spacing: -.01em;
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

/* Lead paragraph */
.hero__lead {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(.95rem, 1.6vw, 1.15rem);
  color: var(--forest);
  letter-spacing: .02em;
  margin-bottom: 1rem;
}

/* Body paragraphs */
.hero__body {
  font-size: clamp(.88rem, 1.3vw, 1.02rem);
  color: var(--earth);
  opacity: .82;
  max-width: 38rem;
  margin: 0 auto 1rem;
}

.hero__body--soft {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--olive);
  opacity: .7;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

/* CTA area */
.hero__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .85em 2.2em;
  background: var(--forest);
  color: var(--white);
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(.82rem, 1.1vw, .92rem);
  letter-spacing: .08em;
  text-transform: uppercase;
  border-radius: 3px;
  transition:
    background .4s var(--ease-smooth),
    transform .3s var(--ease-out),
    box-shadow .4s var(--ease-smooth);
  will-change: transform;
}

.cta-btn:hover,
.cta-btn:focus-visible {
  background: var(--earth);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(62,58,54,.15);
}

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

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

.cta-btn__icon {
  display: flex;
  opacity: .7;
}

.cta-email {
  font-family: var(--font-body);
  font-size: clamp(.78rem, 1vw, .88rem);
  color: var(--copper);
  text-decoration: none;
  letter-spacing: .04em;
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease-smooth);
}

.cta-email:hover,
.cta-email:focus-visible {
  border-bottom-color: var(--copper);
}

.cta-email:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Note */
.hero__note {
  font-size: clamp(.78rem, 1.1vw, .88rem);
  color: var(--earth);
  opacity: .55;
  max-width: 36rem;
  margin: 0 auto;
  line-height: 1.75;
}

.hide-mobile {
  display: inline;
}

@media (max-width: 640px) {
  .hide-mobile { display: none; }
}


/* --- Section Divider --------------------------------------- */
.section-divider {
  display: flex;
  justify-content: center;
  padding: clamp(1.5rem, 3vw, 2.5rem) 0;
}

.divider-line--wide {
  width: clamp(3rem, 12vw, 6rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--stone), transparent);
}


/* --- Footer ------------------------------------------------ */
.footer {
  text-align: center;
  padding: clamp(2.5rem, 5vw, 4rem) clamp(1.5rem, 5vw, 4rem) clamp(2rem, 4vw, 3rem);
  margin-top: auto;
}

.footer__brand {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(.72rem, .9vw, .8rem);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--forest);
  margin-bottom: .4rem;
}

.footer__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(.88rem, 1.2vw, 1rem);
  color: var(--olive);
  opacity: .7;
  margin-bottom: 1.2rem;
}

.footer__email {
  display: inline-block;
  font-size: clamp(.78rem, 1vw, .85rem);
  color: var(--copper);
  text-decoration: none;
  letter-spacing: .03em;
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease-smooth);
  margin-bottom: 1.5rem;
}

.footer__email:hover,
.footer__email:focus-visible {
  border-bottom-color: var(--copper);
}

.footer__email:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: 2px;
}

.footer__legal {
  font-size: clamp(.68rem, .85vw, .75rem);
  color: var(--earth);
  opacity: .4;
  line-height: 1.8;
}


/* --- Reveal Animation System ------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity .9s var(--ease-out),
    transform .9s var(--ease-out);
}

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


/* --- Reduced Motion ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .bg__gradient,
  .bg__grain,
  .bg__canvas {
    animation: none;
  }

  .bg__grain {
    display: none;
  }

  .theme-toggle {
    opacity: 1;
  }
}


/* --- Responsive Tweaks ------------------------------------- */

/* Small phones */
@media (max-width: 480px) {
  .hero__heading br {
    display: none;
  }

  .hero__heading {
    font-size: clamp(1.8rem, 8vw, 2.4rem);
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
    max-width: 280px;
  }

  .theme-toggle {
    width: 36px;
    height: 36px;
    right: .8rem;
    top: .8rem;
  }

  .footer__legal br { display: none; }
}

/* Landscape phones */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
  }

  .hero__divider {
    margin-bottom: 1rem;
  }

  .header {
    padding-top: 1rem;
    padding-bottom: 1rem;
  }
}

/* Tablets */
@media (min-width: 481px) and (max-width: 768px) {
  .hero__heading {
    font-size: clamp(2rem, 6vw, 3rem);
  }
}

/* 4K+ */
@media (min-width: 2000px) {
  .hero__inner {
    max-width: 60rem;
  }
}