/* ============================================================
   FATAPLUS DESIGN SYSTEM — SECTIONS (Organisms)
   Navbar, hero, layout patterns, pricing, footer
   ============================================================ */

/* ============================================================
   1. NAVBAR
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding-block: var(--space-4);
  transition: background-color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
  background-color: transparent;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

:root[data-theme="dark"] .navbar.scrolled {
  background-color: rgba(8, 4, 10, 0.85);
  border-bottom: 1px solid var(--border-dark);
}

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

.nav-brand {
  font-family: var(--font-family-display);
  font-size: var(--font-h3);
  color: var(--brand-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-family: var(--font-family-body);
  font-size: var(--font-ui);
  font-weight: var(--weight-normal);
  color: var(--text-primary);
  position: relative;
  padding-block: var(--space-1);
}

.nav-link:hover {
  color: var(--brand-secondary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 72px; /* Navbar height */
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-body);
    flex-direction: column;
    padding: var(--space-12) var(--space-6);
    gap: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--duration-normal) var(--ease-standard);
    z-index: var(--z-nav);
    border-top: 1px solid var(--border-default);
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-actions {
    display: none; /* In menu on mobile */
  }

  .nav-menu.open + .nav-actions {
    display: flex;
    position: absolute;
    bottom: var(--space-12);
    left: var(--space-6);
    right: var(--space-6);
  }
}

/* ============================================================
   2. HERO
   Anti-slop: NO split-hero (left-text, right-panel), NO center stack
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 120px; /* offset navbar */
  overflow: hidden;
}

/* Hero background light */
.hero-glow {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 60vh;
  background: radial-gradient(
    circle at 50% 100%,
    rgba(11, 110, 79, 0.15) 0%,
    transparent 70%
  );
  pointer-events: none;
  z-index: var(--z-base);
}

.hero-container {
  position: relative;
  z-index: var(--z-content);
  max-width: 1100px;
  text-align: center;
  margin: 0 auto;
}

.hero-headline {
  margin-bottom: var(--space-6);
}

.hero-subtext {
  font-size: var(--font-h5);
  line-height: var(--font-body-lh);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--space-10);
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ============================================================
   3. SHADERS / VISUAL SIGNATURES (Atoms + Organisms)
   "Tany Mena" / "Ravinala Light" horizontal SVG beam signature
   ============================================================ */

.signature-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-block: var(--space-16);
}

.ravinala-signature {
  width: 320px;
  height: 320px;
  position: relative;
}

/* The vertical core visualizer */
.core-sample {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  width: 48px;
  height: 240px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-default);
  padding: var(--space-1);
}

.core-stratum {
  flex: 1;
  border-radius: var(--radius-xs);
  transition: opacity var(--duration-fast) var(--ease-standard);
}

/* Laterite strata colors */
.core-stratum:nth-child(1) { background-color: #032117; }
.core-stratum:nth-child(2) { background-color: #08583F; }
.core-stratum:nth-child(3) { background-color: #0B6E4F; }
.core-stratum:nth-child(4) { background-color: #549983; }
.core-stratum:nth-child(5) { background-color: #CEE2DB; }
.core-stratum:nth-child(6) { background-color: #CC6147; }
.core-stratum:nth-child(7) { background-color: #FF7262; }

/* ============================================================
   4. EXPERTISE TABS
   ============================================================ */

.tabs-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.tabs-list {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  border-bottom: 1px solid var(--border-default);
  padding-bottom: var(--space-4);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs-list::-webkit-scrollbar {
  display: none;
}

.tab-trigger {
  font-family: var(--font-family-body);
  font-size: var(--font-h6);
  font-weight: var(--weight-medium);
  color: var(--text-tertiary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}

.tab-trigger:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.tab-trigger.active {
  color: var(--brand-secondary);
  background: var(--brand-lighter);
}

.tab-content {
  display: none;
  animation: tab-fade-in var(--duration-normal) var(--ease-standard);
}

.tab-content.active {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@keyframes tab-fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   5. WORK SECTION (Horizontal strips, no card grid)
   ============================================================ */

.work-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--border-default);
  transition: padding-inline var(--duration-normal) var(--ease-standard);
}

.work-strip:hover {
  padding-inline: var(--space-4);
}

.work-strip-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 60%;
}

.work-strip-title {
  font-family: var(--font-family-display);
  font-size: var(--font-h3);
  color: var(--text-primary);
}

.work-strip-desc {
  font-size: var(--font-body);
  color: var(--text-secondary);
}

.work-strip-link {
  font-size: var(--font-ui);
  font-weight: var(--weight-semibold);
  color: var(--brand-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

@media (max-width: 768px) {
  .work-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
  .work-strip-info {
    max-width: 100%;
  }
}

/* ============================================================
   6. FOOTER
   Anti-slop: no default asymmetry, aligned to grid
   ============================================================ */

.footer {
  border-top: 1px solid var(--border-default);
  padding-block: var(--space-20) var(--space-12);
  background-color: var(--bg-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.footer-heading {
  font-size: var(--font-h5);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
}

.footer-link {
  font-size: var(--font-ui);
  color: var(--text-secondary);
}

.footer-link:hover {
  color: var(--brand-secondary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-default);
  font-size: var(--font-caption);
  color: var(--text-tertiary);
}

@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}