/* ═══════════════════════════════════════
   SEMPER — Ever-Flourishing
   Premium Running Socks / Marin County
   ═══════════════════════════════════════ */

:root {
  --green-deep: #1B4332;
  --green-rich: #2D6A4F;
  --green-light: #40916C;
  --black: #0A0A0A;
  --dark: #141414;
  --gray-dark: #1E1E1E;
  --gray-mid: #94A3B8;
  --gray-light: #CBD5E1;
  --fog: #E2E8F0;
  --white: #FAFAFA;
  --cream: #F5F0EB;

  --font: 'Inter', -apple-system, 'Helvetica Neue', sans-serif;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 14px 32px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 6px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-mid);
  transition: color 0.3s var(--ease);
}

.nav-links a:hover {
  color: var(--white);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--white);
  position: absolute;
  left: 0;
  transition: all 0.3s var(--ease);
}

.nav-toggle span:first-child { top: 4px; }
.nav-toggle span:last-child { bottom: 4px; }

.nav-toggle.active span:first-child {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav-toggle.active span:last-child {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(10, 10, 10, 0.98);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--gray-mid);
  transition: color 0.3s var(--ease);
}

.mobile-menu a:hover {
  color: var(--white);
}

/* ── Hero ── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) brightness(0.5);
  transform: scale(1.05);
  transition: transform 8s linear;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.4) 0%,
    rgba(10, 10, 10, 0.2) 40%,
    rgba(10, 10, 10, 0.5) 80%,
    rgba(10, 10, 10, 1) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.hero-super {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 16px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero-title {
  font-size: clamp(64px, 15vw, 180px);
  font-weight: 600;
  letter-spacing: 20px;
  text-transform: uppercase;
  line-height: 0.9;
  margin-bottom: 12px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1s var(--ease-out) 0.4s forwards;
}

.hero-sub {
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 8px;
  text-transform: uppercase;
  color: var(--gray-light);
  margin-bottom: 32px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero-line {
  width: 48px;
  height: 1px;
  background: var(--green-light);
  margin: 0 auto 28px;
  opacity: 0;
  animation: fadeIn 0.6s var(--ease) 0.8s forwards;
}

.hero-tagline {
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--gray-mid);
  letter-spacing: 0.5px;
  max-width: 440px;
  margin: 0 auto 40px;
  opacity: 0;
  transform: translateY(15px);
  animation: fadeUp 0.8s var(--ease-out) 0.9s forwards;
}

.hero-cta {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 14px 40px;
  transition: all 0.4s var(--ease);
  opacity: 0;
  transform: translateY(15px);
  animation: fadeUp 0.8s var(--ease-out) 1.1s forwards;
}

.hero-cta:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  animation: fadeIn 0.6s var(--ease) 1.4s forwards;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--gray-mid), transparent);
  animation: scrollPulse 2s var(--ease) infinite;
}

/* ── Sections ── */
.section {
  padding: 120px 0;
}

.section-dark {
  background: var(--black);
}

.section-light {
  background: var(--dark);
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--green-light);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 15px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--gray-mid);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Story ── */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.story-text p {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--gray-light);
  margin-bottom: 24px;
}

.story-text em {
  color: var(--green-light);
  font-style: italic;
}

.story-lead {
  font-size: 18px !important;
  color: var(--white) !important;
}

.story-values {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.value {
  padding-left: 24px;
  border-left: 1px solid var(--green-deep);
  transition: border-color 0.4s var(--ease);
}

.value:hover {
  border-color: var(--green-light);
}

.value-number {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--green-light);
  display: block;
  margin-bottom: 8px;
}

.value h3 {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.value p {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.6;
  color: var(--gray-mid);
}

/* ── Collections ── */
.collections-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.collection {
  background: var(--black);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 48px 32px;
  text-align: center;
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease);
}

.collection:hover {
  border-color: var(--green-deep);
  transform: translateY(-4px);
}

.collection-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 24px;
  color: var(--green-light);
}

.collection h3 {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.collection-desc {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--gray-mid);
  margin-bottom: 28px;
}

.collection-names {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.collection-names span {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-mid);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 14px;
  transition: all 0.3s var(--ease);
}

.collection:hover .collection-names span {
  border-color: var(--green-deep);
  color: var(--green-light);
}

/* ── Marquee ── */
.marquee {
  overflow: hidden;
  padding: 24px 0;
  background: var(--green-deep);
}

.marquee-track {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  animation: marquee 20s linear infinite;
}

.marquee-track span {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  flex-shrink: 0;
}

/* ── Community ── */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.community-card {
  padding: 40px 32px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color 0.4s var(--ease);
}

.community-card:hover {
  border-color: var(--green-deep);
}

.community-card h3 {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.community-card p {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--gray-mid);
}

/* ── Footer ── */
.footer {
  padding: 100px 0 40px;
  background: var(--dark);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-bottom: 80px;
}

.footer-logo {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 10px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 4px;
}

.footer-location {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--gray-mid);
}

.footer-signup h3 {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.footer-signup > p {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray-mid);
  margin-bottom: 24px;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.signup-form input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--white);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 300;
  padding: 14px 16px;
  letter-spacing: 1px;
  outline: none;
  transition: border-color 0.3s var(--ease);
}

.signup-form input::placeholder {
  color: var(--gray-mid);
}

.signup-form input:focus {
  border-color: var(--green-rich);
}

.signup-form button {
  background: var(--green-deep);
  color: var(--white);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  border: none;
  padding: 16px;
  cursor: pointer;
  transition: background 0.3s var(--ease);
}

.signup-form button:hover {
  background: var(--green-rich);
}

.form-success {
  display: none;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 1px;
  color: var(--green-light);
}

.form-success.visible {
  display: block;
}

.footer-bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-bottom p {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 1px;
  color: var(--gray-mid);
}

/* ── Scroll Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

/* ── Keyframes ── */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .hero-title {
    letter-spacing: 10px;
  }

  .story-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .collections-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .community-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .section {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 48px;
  }
}

@media (max-width: 480px) {
  .nav {
    padding: 16px 20px;
  }

  .hero-super {
    font-size: 10px;
    letter-spacing: 3px;
  }

  .hero-tagline {
    font-size: 13px;
  }

  .collection {
    padding: 36px 24px;
  }

  .community-card {
    padding: 32px 24px;
  }
}