/* ============================================================
   WATOWA — style.css
   ============================================================
   Customize via the :root variables below.
   ============================================================ */


/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */

:root {
  /* --- Colors --- */
  --color-bg:           #F7EFE3;
  --color-bg-alt:       #EDE5D9;
  --color-bg-dark:      #494A41;

  --color-text:         #1A1917;
  --color-text-muted:   #79756E;
  --color-text-invert:  #F9F7F4;

  --color-accent:       #8A6D5A;
  --color-border:       #E0DCD5;
  --color-border-dark:  rgba(255,255,255,0.1);

  /* --- Typography --- */
  --font:               'Bricolage Grotesque', system-ui, sans-serif;

  --size-hero:          clamp(2.25rem, 5.5vw, 5rem);
  --size-panel-title:   clamp(3.5rem, 9vw, 9rem);
  --size-title:         clamp(1.5rem, 3vw, 2.25rem);
  --size-body:          clamp(0.9375rem, 1.3vw, 1.0625rem);
  --size-label:         0.6875rem;

  --leading-tight:      1.05;
  --leading-body:       1.8;

  --tracking-label:     0.18em;

  /* --- Spacing --- */
  --space-xs:           0.5rem;
  --space-sm:           1rem;
  --space-md:           2rem;
  --space-lg:           4rem;
  --space-xl:           7rem;

  /* --- Layout --- */
  --container-max:      1280px;
  --nav-height:         60px;

  /* --- Motion --- */
  --ease:               cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-out:           cubic-bezier(0, 0, 0.2, 1);
  --duration:           260ms;
}


/* ============================================================
   2. RESET & BASE
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior-y: none;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font);
  font-weight: 300;
  font-size: 1rem;
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul { list-style: none; }
img { display: block; max-width: 100%; }


/* ============================================================
   3. LAYOUT
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 6vw, 4rem);
}


/* ============================================================
   4. NAVIGATION
   ============================================================ */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration) var(--ease);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
}

.nav-inner {
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 6vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-family: var(--font);
  font-weight: 400;
  font-size: 0.875rem;
  letter-spacing: var(--tracking-label);
  color: var(--color-text);
  text-transform: uppercase;
}

.wordmark--sm {
  font-size: 0.75rem;
}

.site-nav ul {
  display: flex;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.site-nav a {
  font-weight: 300;
  font-size: 0.8125rem;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.5;
  transition: opacity 150ms;
}

.site-nav a:hover { opacity: 1; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 1px;
  background-color: var(--color-text);
  transition: transform var(--duration) var(--ease), opacity 150ms;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-7px) rotate(-45deg);
}


/* ============================================================
   5. HERO
   ============================================================ */

.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  padding-block: var(--space-xl);
}

.hero .container {
  max-width: var(--container-max);
  position: relative;
}

.hero-statement,
.hero-body {
  max-width: 820px;
}

.hero-statement {
  font-size: var(--size-hero);
  font-weight: 200;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

.hero-statement strong {
  font-weight: 400;
}

.hero-divider {
  width: 2rem;
  height: 1px;
  background-color: var(--color-accent);
  margin-block: clamp(2.5rem, 5vw, 4rem);
}

.hero-body {
  font-size: var(--size-body);
  font-weight: 300;
  line-height: var(--leading-body);
  color: var(--color-text-muted);
  max-width: 52ch;
}

/* Scroll cue at bottom of hero */
.scroll-cue {
  position: absolute;
  bottom: calc(-1 * var(--space-xl) + 2rem);
  left: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) 1.2s forwards;
}

.scroll-cue-label {
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.scroll-cue-line {
  width: 3rem;
  height: 1px;
  background-color: var(--color-border);
  position: relative;
  overflow: hidden;
}

.scroll-cue-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--color-accent);
  animation: scanLine 1.8s var(--ease-out) 1.2s infinite;
}

@keyframes scanLine {
  0%   { transform: translateX(-100%); }
  60%  { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

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


/* ============================================================
   6. HORIZONTAL SCROLL ZONE
   ============================================================ */

/* Wrapper: tall container that provides scroll space.
   Height is set by JavaScript. */
.h-wrapper {
  position: relative;
}

/* Track: sticky viewport-height panel that houses slides */
.h-track {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
}

/* Slides: full-width flex row of panels */
.h-slides {
  display: flex;
  flex-wrap: nowrap;
  height: 100%;
  will-change: transform;
}


/* ============================================================
   7. HORIZONTAL PANELS
   ============================================================ */

.h-panel {
  width: 100vw;
  height: 100%;
  flex-shrink: 0;
  display: flex;
  align-items: stretch;
  background-color: var(--color-bg);
  border-left: 1px solid var(--color-border);
  position: relative;
}

.h-panel:first-child {
  border-left: none;
}

/* Alternating subtle tint */
.h-panel:nth-child(even) {
  background-color: var(--color-bg-alt);
}

/* Dark story panel */
.h-panel--story {
  background-color: var(--color-bg-dark) !important;
  border-left-color: var(--color-border-dark);
}

/* Panel inner: two-column grid */
.panel-inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 6vw, 4rem);
  display: grid;
  grid-template-columns: 4fr 5fr;
  gap: clamp(2rem, 6vw, 7rem);
  align-items: center;
  align-content: center;
}

/* Left column: number + large title */
.panel-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.panel-num {
  display: block;
  font-size: var(--size-label);
  line-height: 1;
  font-weight: 400;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* Invisible spacer — mirrors the number height so justify-content: center
   lands on the title text, not the number+title block */
.panel-left::after {
  content: '';
  display: block;
  height: calc(var(--size-label) + 1.5rem);
}

.h-panel--story .panel-num {
  color: rgba(249, 247, 244, 0.35);
}

.panel-title {
  font-size: var(--size-hero);
  font-weight: 400;
  line-height: var(--leading-tight);
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-text);
}

.h-panel--story .panel-title {
  color: var(--color-text-invert);
}

/* Right column: body text */
.panel-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-self: stretch;
}

.panel-body {
  font-size: var(--size-body);
  font-weight: 300;
  line-height: var(--leading-body);
  letter-spacing: 0;
  color: var(--color-text-muted);
}

/* Story panel: right side gets multi-column text */
.panel-inner--story {
  padding-block: clamp(2rem, 8vh, 5rem);
}

.panel-right--story {
  column-count: 2;
  column-gap: clamp(1.5rem, 4vw, 3rem);
  column-rule: 1px solid var(--color-border-dark);
}

.panel-right--story p {
  font-size: clamp(0.875rem, 1.2vw, 1rem);
  font-weight: 300;
  line-height: 1.85;
  color: rgba(249, 247, 244, 0.65);
  break-inside: avoid;
  margin-bottom: 1.25em;
}

.panel-right--story p:last-child {
  margin-bottom: 0;
}


/* ============================================================
   8. PROGRESS BAR & PANEL COUNTER
   ============================================================ */

.h-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-border);
  z-index: 10;
}

.h-progress-fill {
  height: 100%;
  width: 0%;
  background-color: var(--color-accent);
  transition: width 0.05s linear;
}

.panel-counter {
  position: absolute;
  bottom: 1.25rem;
  right: clamp(1.5rem, 4vw, 3rem);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: var(--tracking-label);
  color: var(--color-text-muted);
  z-index: 10;
  transition: color var(--duration);
}

/* Counter turns light on the dark story panel */
.panel-counter.on-dark {
  color: rgba(249, 247, 244, 0.35);
}

.panel-counter-sep {
  margin-inline: 0.4em;
}

.panel-counter-total {
  opacity: 0.45;
}


/* ============================================================
   9. CONTACT
   ============================================================ */

.contact {
  min-height: 60svh;
  display: flex;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-xl);
}

.contact-label {
  font-size: var(--size-label);
  font-weight: 400;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.contact-email {
  display: inline-block;
  font-size: clamp(1.5rem, 3.5vw, 3rem);
  font-weight: 200;
  letter-spacing: -0.02em;
  color: var(--color-text);
  border-bottom: 1px solid transparent;
  transition: border-color 150ms, opacity 150ms;
}

.contact-email:hover {
  border-bottom-color: var(--color-accent);
  opacity: 0.65;
}


/* ============================================================
   10. FOOTER
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-md);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-note {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}


/* ============================================================
   11. RESPONSIVE
   ============================================================ */

/* --- Safe-area insets (notch / Dynamic Island / home bar) --- */
.site-header {
  padding-top: env(safe-area-inset-top);
  height: calc(var(--nav-height) + env(safe-area-inset-top));
}

.hero {
  padding-top: calc(var(--nav-height) + env(safe-area-inset-top) + var(--space-xl));
}

.site-footer {
  padding-bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
}

/* --- Tablet (≤860px) --- */
@media (max-width: 860px) {
  .panel-inner {
    grid-template-columns: 1fr 2fr;
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .panel-right--story {
    column-count: 1;
  }
}

/* --- Mobile (≤640px) --- */
@media (max-width: 640px) {
  :root {
    --space-xl:   3.5rem;
    --nav-height: 52px;
  }

  /* Nav */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(var(--nav-height) + env(safe-area-inset-top));
    inset-inline: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) clamp(1.25rem, 5vw, 2rem);
  }

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

  .site-nav ul {
    flex-direction: column;
    gap: 1.5rem;
  }

  .site-nav a {
    font-size: 1rem;
    opacity: 0.8;
    padding-block: 0.25rem;
  }

  /* Hero */
  .hero-body {
    max-width: 100%;
  }

  .hero-divider {
    margin-block: 1.75rem;
  }

  .scroll-cue {
    display: none;
  }

  /* Panels: single-column stacked layout */
  .panel-inner {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding-inline: clamp(1.25rem, 6vw, 2rem);
    padding-block: clamp(2rem, 6vh, 3.5rem);
    align-content: center;
  }

  /* Remove the balance spacer — not needed in single-column */
  .panel-left::after {
    display: none;
  }

  .panel-left {
    gap: 0;
  }

  .panel-num {
    margin-bottom: 0.65rem;
  }

  /* Smaller heading on mobile */
  .panel-title {
    font-size: clamp(1.75rem, 9vw, 2.5rem);
  }

  .panel-body {
    font-size: 0.9375rem;
    line-height: 1.72;
  }

  /* Story panel: scrollable body for long text */
  .panel-inner--story {
    padding-block: clamp(1.5rem, 5vh, 2.5rem);
  }

  .panel-right--story {
    column-count: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    max-height: calc(100svh - var(--nav-height) - 13rem);
    padding-right: 0.25rem;
  }

  .panel-right--story p {
    font-size: 0.9rem;
    line-height: 1.72;
  }

  /* Panel counter */
  .panel-counter {
    bottom: 0.875rem;
    right: clamp(1.25rem, 6vw, 2rem);
  }

  /* Contact */
  .contact {
    min-height: 50svh;
  }

  .contact-email {
    font-size: clamp(1.25rem, 7vw, 2rem);
  }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }
}

/* --- Small phones (≤390px — iPhone SE, 13 mini) --- */
@media (max-width: 390px) {
  :root {
    --space-xl: 3rem;
  }

  .panel-title {
    font-size: clamp(1.5rem, 9vw, 2rem);
  }

  .panel-body {
    font-size: 0.875rem;
  }

  .panel-right--story p {
    font-size: 0.85rem;
  }

  .contact-email {
    font-size: clamp(1.125rem, 7vw, 1.5rem);
  }
}