/* ============================================================
   STIAL FACTORY PORTAL — STYLES
   ============================================================ */

/* --- Custom Properties (matching brand) --- */
:root {
  --red:         #E8102E;
  --red-glow:    #FF4444;
  --dark:        #0A0A0F;
  --dark-light:  #12121A;
  --dark-card:   #14141E;
  --text:        #F0F0F5;
  --text-muted:  #888899;
  --text-dim:    #555566;

  --font-display: 'Clash Display', sans-serif;
  --font-body:    'Satoshi', sans-serif;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --transition:  180ms cubic-bezier(0.16, 1, 0.3, 1);

  --container:   1200px;
  --gap:         clamp(1rem, 3vw, 2.5rem);
}

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

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

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text);
  background: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(232, 16, 46, 0.08);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.nav__links {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition);
  position: relative;
}

.nav__link--active {
  color: var(--text);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--red);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__cta {
  background: var(--red);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.nav__cta:hover {
  background: var(--red-glow);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(232, 16, 46, 0.3);
}

/* ============================================================
   PORTAL HERO
   ============================================================ */
.portal-hero {
  position: relative;
  width: 100%;
  padding: 160px 0 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.portal-hero__grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.portal-hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: var(--container);
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.portal-hero__label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s var(--ease-out) forwards;
}

.portal-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s var(--ease-out) forwards;
}

.portal-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 1.5vw, 1.125rem);
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s var(--ease-out) forwards;
}

.portal-hero__subtitle-cn {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-dim);
  font-weight: 300;
  opacity: 0;
  animation: fadeUp 0.8s 0.7s var(--ease-out) forwards;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   FACTORY CARDS
   ============================================================ */
.factories {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem) 3rem;
}

.factories__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}

.factory-card {
  display: flex;
  flex-direction: column;
  background: rgba(20, 20, 30, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(232, 16, 46, 0.1);
  border-radius: 16px;
  padding: clamp(1.5rem, 2.5vw, 2rem);
  cursor: pointer;
  transition: border-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out), transform 0.4s var(--ease-out), background 0.4s var(--ease-out);
  text-decoration: none;
  color: inherit;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) forwards;
}

.factory-card:nth-child(1) { animation-delay: 0.8s; }
.factory-card:nth-child(2) { animation-delay: 0.9s; }
.factory-card:nth-child(3) { animation-delay: 1.0s; }
.factory-card:nth-child(4) { animation-delay: 1.1s; }

.factory-card:hover {
  border-color: rgba(232, 16, 46, 0.4);
  box-shadow:
    0 0 60px rgba(232, 16, 46, 0.1),
    inset 0 0 60px rgba(232, 16, 46, 0.03);
  transform: translateY(-4px);
  background: rgba(20, 20, 30, 0.8);
}

.factory-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.factory-card__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.factory-card__status--online {
  color: #22c55e;
}

.factory-card__status--maintenance {
  color: #eab308;
}

.factory-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  position: relative;
}

.factory-card__status--online .factory-card__dot {
  background: #22c55e;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
  animation: pulse-green 2s ease-in-out infinite;
}

.factory-card__status--maintenance .factory-card__dot {
  background: #eab308;
  box-shadow: 0 0 8px rgba(234, 179, 8, 0.6);
  animation: pulse-yellow 2s ease-in-out infinite;
}

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 8px rgba(34, 197, 94, 0.6); }
  50% { box-shadow: 0 0 16px rgba(34, 197, 94, 0.3); }
}

@keyframes pulse-yellow {
  0%, 100% { box-shadow: 0 0 8px rgba(234, 179, 8, 0.6); }
  50% { box-shadow: 0 0 16px rgba(234, 179, 8, 0.3); }
}

.factory-card__robots {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.factory-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.factory-card__name-cn {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
}

.factory-card__desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.5;
  flex: 1;
}

.factory-card__footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(240, 240, 245, 0.06);
}

.factory-card__enter {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--red);
  letter-spacing: 0.03em;
  transition: color var(--transition);
}

.factory-card:hover .factory-card__enter {
  color: var(--red-glow);
}

/* ============================================================
   PORTAL STATS BAR
   ============================================================ */
.portal-stats {
  border-top: 1px solid rgba(232, 16, 46, 0.08);
  padding: 2.5rem 0;
}

.portal-stats__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 3vw, 3rem);
}

.portal-stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.portal-stats__number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: var(--text);
}

.portal-stats__label {
  font-size: 0.6875rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.portal-stats__divider {
  width: 1px;
  height: 32px;
  background: rgba(240, 240, 245, 0.08);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--dark);
  border-top: 1px solid rgba(240, 240, 245, 0.06);
  padding: 1.5rem 0;
}

.footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.footer__attribution-link {
  font-size: 0.6875rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.footer__attribution-link:hover {
  color: var(--text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .factories__grid {
    grid-template-columns: 1fr;
  }

  .portal-stats__inner {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .portal-stats__divider {
    display: none;
  }

  .portal-stats__item {
    min-width: 80px;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}

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

  .factory-card,
  .portal-hero__label,
  .portal-hero__title,
  .portal-hero__subtitle,
  .portal-hero__subtitle-cn {
    opacity: 1;
    transform: none;
  }
}