/* =========================================================
   SENDJI LABS — main.css
   Design system: dark industrial precision
   Fonts: Syne (display) + DM Sans (body)
   ========================================================= */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* --- Custom Properties --- */
:root {
  --navy:       #0F172A;
  --navy-mid:   #131E33;
  --navy-light: #1E2D47;
  --teal:       #2DD4BF;
  --teal-light: #5EEAD4;
  --teal-dim:   rgba(45, 212, 191, 0.12);
  --teal-glow:  rgba(45, 212, 191, 0.25);
  --white-soft: #E5E7EB;
  --gray:       #94A3B8;
  --gray-dim:   #475569;
  --border:     rgba(148, 163, 184, 0.1);
  --border-hover: rgba(45, 212, 191, 0.35);

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--navy);
  color: var(--white-soft);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* =========================================================
   NOISE + DOT GRID TEXTURE OVERLAY
   ========================================================= */

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(148,163,184,0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

/* =========================================================
   TYPOGRAPHY SCALE
   ========================================================= */

.display-xl {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}

.body-lg {
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--gray);
}

.body-md {
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--gray);
}

/* =========================================================
   LAYOUT UTILITIES
   ========================================================= */

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-pad {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

.section-pad-sm {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

/* =========================================================
   BUTTONS
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 13px 26px;
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--teal);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--teal-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(45, 212, 191, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--white-soft);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--teal-light);
  background: var(--teal-dim);
  transform: translateY(-1px);
}

.btn-outline-teal {
  background: transparent;
  color: var(--teal);
  border: 1px solid rgba(45, 212, 191, 0.4);
  font-size: 0.85rem;
  padding: 10px 20px;
}

.btn-outline-teal:hover {
  background: var(--teal-dim);
  border-color: var(--teal);
  box-shadow: 0 4px 20px rgba(45, 212, 191, 0.15);
  transform: translateY(-1px);
}

/* =========================================================
   NAVBAR
   ========================================================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: background var(--transition), border-color var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.navbar__inner {
  max-width: 1160px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.navbar__logo-mark {
  width: 32px;
  height: 32px;
  filter: brightness(0) saturate(100%) invert(86%) sepia(28%) saturate(700%) hue-rotate(116deg) brightness(108%);
}

.navbar__logo-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white-soft);
}

.navbar__logo-name span {
  color: var(--teal);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.navbar__link {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--gray);
  transition: color var(--transition);
  letter-spacing: 0.005em;
}

.navbar__link:hover {
  color: var(--white-soft);
}

.navbar__cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--gray);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar__hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
}
.navbar__hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Menu */
.navbar__mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 24px;
  z-index: 99;
  flex-direction: column;
  gap: 8px;
}

.navbar__mobile-menu.open {
  display: flex;
}

.navbar__mobile-link {
  font-size: 1rem;
  font-weight: 400;
  color: var(--gray);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}

.navbar__mobile-link:hover {
  color: var(--white-soft);
}

.navbar__mobile-cta {
  margin-top: 16px;
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  z-index: 1;
}

/* Teal glow halo */
.hero__glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(45, 212, 191, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Geometric accent lines */
.hero__grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.hero__grid-lines::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 480px;
  height: 480px;
  border: 1px solid rgba(45, 212, 191, 0.07);
  border-radius: 50%;
  transform: translate(30%, -30%);
}

.hero__grid-lines::after {
  content: '';
  position: absolute;
  bottom: 10%;
  left: -5%;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(45, 212, 191, 0.05);
  border-radius: 50%;
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding: 140px 0 100px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  animation: fadeInUp 0.7s ease both;
}

.hero__eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(45, 212, 191, 0); }
}

.hero__headline {
  max-width: 760px;
  margin-bottom: 28px;
  animation: fadeInUp 0.7s 0.1s ease both;
}

.hero__headline .teal-word {
  color: var(--teal);
}

.hero__subtext {
  max-width: 540px;
  margin-bottom: 48px;
  animation: fadeInUp 0.7s 0.2s ease both;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeInUp 0.7s 0.3s ease both;
}

/* Floating stat bar */
.hero__stats {
  display: flex;
  gap: 40px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  animation: fadeInUp 0.7s 0.45s ease both;
  flex-wrap: wrap;
}

.hero__stat-item {}

.hero__stat-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--white-soft);
  letter-spacing: -0.02em;
}

.hero__stat-label {
  font-size: 0.82rem;
  color: var(--gray);
  margin-top: 2px;
}

/* =========================================================
   PRODUCTS SECTION
   ========================================================= */

.products {
  border-top: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .label {
  margin-bottom: 14px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 520px;
  margin: 0 auto;
}

.products__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Product Card */
.product-card {
  position: relative;
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--teal-dim) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35), 0 0 40px rgba(45, 212, 191, 0.08);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--teal-dim);
  border: 1px solid rgba(45, 212, 191, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.product-card__icon svg {
  width: 22px;
  height: 22px;
  color: var(--teal);
}

.product-card__tag {
  position: relative;
  z-index: 1;
  margin-bottom: 16px;
}

.product-card__title {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white-soft);
  margin-bottom: 12px;
}

.product-card__desc {
  position: relative;
  z-index: 1;
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 340px;
}

.product-card__footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-card__learn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--teal);
  transition: gap var(--transition), opacity var(--transition);
}

.product-card__learn:hover {
  gap: 10px;
}

.product-card__learn svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
}

.product-card:hover .product-card__learn svg {
  transform: translateX(3px);
}

/* Decorative corner accent */
.product-card__corner {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 100px;
  height: 100px;
  border-top: 1px solid rgba(45, 212, 191, 0.1);
  border-left: 1px solid rgba(45, 212, 191, 0.1);
  border-top-left-radius: 20px;
  pointer-events: none;
  transition: border-color var(--transition);
}

.product-card:hover .product-card__corner {
  border-color: rgba(45, 212, 191, 0.3);
}

/* =========================================================
   PHILOSOPHY SECTION
   ========================================================= */

.philosophy {
  border-top: 1px solid var(--border);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 64px;
}

.pillar {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  transition: border-color var(--transition), transform var(--transition);
}

.pillar:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.pillar__number {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--teal);
  margin-bottom: 20px;
}

.pillar__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white-soft);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.pillar__desc {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.65;
}

/* =========================================================
   ECOSYSTEM SECTION
   ========================================================= */

.ecosystem {
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

/* Centered glow */
.ecosystem::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse at center, rgba(45, 212, 191, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.ecosystem__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.ecosystem__content .label {
  margin-bottom: 16px;
}

.ecosystem__content h2 {
  margin-bottom: 20px;
}

.ecosystem__content p {
  margin-bottom: 16px;
}

.ecosystem__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Connection diagram */
.ecosystem-diagram {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
}

.eco-node {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--navy-mid);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.eco-node:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 30px rgba(45, 212, 191, 0.12);
}

.eco-node--center {
  width: 96px;
  height: 96px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-color: rgba(45, 212, 191, 0.3);
  background: var(--navy-light);
  z-index: 2;
}

.eco-node--culina {
  width: 84px;
  height: 84px;
  top: 8%;
  left: 8%;
}

.eco-node--locallift {
  width: 84px;
  height: 84px;
  top: 8%;
  right: 8%;
}

.eco-node--future {
  width: 80px;
  height: 80px;
  bottom: 12%;
  left: 50%;
  transform: translateX(-50%);
  border-style: dashed;
  opacity: 0.5;
}

.eco-node__label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--gray);
  letter-spacing: 0.05em;
  text-align: center;
}

.eco-node--center .eco-node__label {
  color: var(--teal);
}

/* SVG connector lines drawn inline in HTML */
.eco-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* =========================================================
   CTA SECTION
   ========================================================= */

.cta-section {
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at top, rgba(45, 212, 191, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
}

.cta-section .label {
  margin-bottom: 20px;
}

.cta-section h2 {
  margin-bottom: 18px;
}

.cta-section p {
  max-width: 480px;
  margin: 0 auto 48px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* =========================================================
   FOOTER
   ========================================================= */

.footer {
  border-top: 1px solid var(--border);
  padding: 52px 0 40px;
  position: relative;
  z-index: 1;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.footer__brand {}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.footer__logo-mark {
  width: 28px;
  height: 28px;
  filter: brightness(0) saturate(100%) invert(86%) sepia(28%) saturate(700%) hue-rotate(116deg) brightness(108%);
}

.footer__logo-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white-soft);
}

.footer__logo-name span {
  color: var(--teal);
}

.footer__tagline {
  font-size: 0.82rem;
  color: var(--gray-dim);
}

.footer__nav {
  display: flex;
  gap: 32px;
}

.footer__nav-link {
  font-size: 0.875rem;
  color: var(--gray);
  transition: color var(--transition);
}

.footer__nav-link:hover {
  color: var(--white-soft);
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--gray-dim);
}

/* =========================================================
   SCROLL REVEAL ANIMATION
   ========================================================= */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

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

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {
  .navbar__links,
  .navbar__cta .btn {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

  .products__grid {
    grid-template-columns: 1fr;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
  }

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

  .ecosystem__visual {
    order: -1;
  }

  .ecosystem-diagram {
    max-width: 280px;
  }

  .hero__stats {
    gap: 28px;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .footer__nav {
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .section-pad {
    padding: 80px 0;
  }

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-actions {
    flex-direction: column;
  }

  .hero__stats {
    gap: 24px;
  }
}