/* ===== GLOBAL OPENAI THEME ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;

  background-color: #f7f7f8;
  color: #0f172a;
  line-height: 1.6;
}

/* smooth feel */
html {
  scroll-behavior: smooth;
}

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;

  display: flex;
  align-items: center;
  justify-content: space-between;

  padding: 14px 40px;
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;

  transition: all 0.25s ease;
}

/* shrink on scroll */
.navbar.scrolled {
  padding: 8px 40px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
}

/* ===== LOGO ===== */
.logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo-link {
  text-decoration: none;
  color: #0f172a;
}

.logo-link::after {
  content: ".";
  color: #2563eb;   /* subtle brand dot */
}

/* ===== DESKTOP LINKS ===== */
.navbar nav {
  display: flex;
  gap: 28px;
}

.navbar nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: #374151;
  transition: color 0.2s ease;
}

.navbar nav a:hover {
  color: #000000;
}

/* ===== HAMBURGER ICON ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: #111827;
}

/* ===== MOBILE MENU ===== */
@media (max-width: 768px) {
  .navbar {
    padding: 12px 20px;
  }

  .navbar nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;

    flex-direction: column;
    gap: 0;

    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;

    display: none;
  }

  .navbar nav a {
    padding: 14px 20px;
    border-top: 1px solid #f1f5f9;
  }

  .navbar nav.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 88vh;

  display: flex;
  align-items: center;

  padding: 0 6%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* soft white overlay (OpenAI feel) */
.hero .overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.86);
}

/* content wrapper */
.hero-content {
  position: relative;
  max-width: 760px;
  z-index: 2;
}

/* headline */
.hero-content h1 {
  font-size: 3rem;
  font-weight: 600;
  line-height: 1.2;
  color: #0f172a;
  margin-bottom: 18px;
}

/* changing text */
#changing-text {
  display: inline-block;
  color: #000000;
  border-bottom: 2px solid #d1d5db;
  padding-bottom: 2px;
}

/* description */
.hero-content p {
  font-size: 1.05rem;
  color: #374151;
  max-width: 620px;
  margin-bottom: 28px;
}

/* CTA button (OpenAI style) */
.cta-btn {
  display: inline-block;
  padding: 10px 20px;

  font-size: 0.95rem;
  font-weight: 500;

  color: #ffffff;
  background: #000000;

  border-radius: 6px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.cta-btn:hover {
  background: #111827;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    min-height: 78vh;
    padding: 0 20px;
  }

  .hero-content h1 {
    font-size: 2.2rem;
  }
}

/* ===== RESEARCH SECTION ===== */
.section {
  padding: 90px 6%;
  background: #f7f7f8;
}

.section h2 {
  font-size: 2rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 48px;
}

/* ===== GRID ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

/* ===== CARD ===== */
.card {
  background: #ffffff;
  border-radius: 10px;
  overflow: hidden;

  border: 1px solid #e5e7eb;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);

  transform: translateY(20px);
  opacity: 0;

  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease;
}

/* reveal animation */
.card.show {
  transform: translateY(0);
  opacity: 1;
}

/* hover — OpenAI subtle lift */
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
}

/* ===== IMAGE ===== */
.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

/* ===== TEXT ===== */
.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #111827;
  margin: 18px 18px 8px;
}

.card p {
  font-size: 0.95rem;
  color: #374151;
  margin: 0 18px 22px;
  line-height: 1.5;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .section {
    padding: 70px 20px;
  }

  .section h2 {
    font-size: 1.7rem;
  }
}

/* ===== PROJECTS SECTION ===== */
.section.dark {
  background: #0b0f19;
  color: #e5e7eb;
}

/* section heading */
.section.dark h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 64px;
  color: #ffffff;
}

/* ===== PROJECT ROW ===== */
.project {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 90px;

  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

/* reveal */
.project.show {
  opacity: 1;
  transform: translateY(0);
}

/* reverse layout */
.project.reverse {
  grid-template-columns: 1fr 1.1fr;
}

.project.reverse img {
  order: 2;
}

/* ===== IMAGE ===== */
.project img {
  width: 100%;
  border-radius: 12px;
  object-fit: cover;

  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.45);
}

/* ===== TEXT BLOCK ===== */
.project h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: #ffffff;
}

.project p {
  font-size: 1rem;
  color: #cbd5f5;
  line-height: 1.65;
  max-width: 520px;
}

.project-link {
  display: inline-flex;
  margin-top: 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #a5b4fc;
  text-decoration: none;
  transition: color 0.2s ease;
}

.project-link:hover {
  color: #ffffff;
}

/* subtle divider line (OpenAI style) */
.project div::before {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: #4f46e5;
  margin-bottom: 16px;
}

/* ===== MOBILE ===== */
@media (max-width: 900px) {
  .project,
  .project.reverse {
    grid-template-columns: 1fr;
  }

  .project.reverse img {
    order: 0;
  }

  .project {
    gap: 28px;
    margin-bottom: 70px;
  }
}

/* ===== MISSION SECTION ===== */
#mission {
  background: #ffffff;
  padding: 90px 6%;
}

#mission h2 {
  font-size: 2rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 40px;
}

/* mission container */
.mission-box {
  max-width: 820px;
  border-left: 3px solid #e5e7eb;
  padding-left: 32px;
}

/* mission lines */
.mission-line {
  font-size: 1.15rem;
  line-height: 1.7;
  color: #6b7280;

  opacity: 0;
  transform: translateY(12px);

  transition:
    opacity 0.6s ease,
    transform 0.6s ease,
    color 0.6s ease;

  margin-bottom: 26px;
}

/* active line (focus) */
.mission-line.active {
  opacity: 1;
  transform: translateY(0);
  color: #111827;
  font-weight: 500;
}

/* visible but not active (history feel) */
.mission-line.visible {
  opacity: 0.55;
  transform: translateY(0);
}

/* mobile */
@media (max-width: 768px) {
  #mission {
    padding: 70px 20px;
  }

  .mission-line {
    font-size: 1.05rem;
  }
}

/* ===== FOUNDER SECTION ===== */
.section.dark {
  background: #0b0f19;
  color: #e5e7eb;
}

.founder {
  max-width: 1100px;
  margin: 0 auto;

  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;

  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}

/* reveal */
.founder.show {
  opacity: 1;
  transform: translateY(0);
}

/* image */
.founder img {
  width: 100%;
  border-radius: 14px;
  object-fit: cover;

  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.5);
}

/* text */
.founder h2 {
  font-size: 2rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 22px;
}

/* subtle divider (OpenAI style) */
.founder h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 2px;
  background: #6366f1;
  margin-top: 14px;
}

/* paragraph */
.founder p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #cbd5f5;
  max-width: 560px;
}

/* mobile */
@media (max-width: 900px) {
  .founder {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .founder h2 {
    font-size: 1.7rem;
  }
}

/* ===== FOOTER ===== */
.footer {
  background: #0b0f19;
  color: #cbd5f5;
  padding: 80px 6% 30px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;

  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
}

/* brand */
.footer-brand h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 420px;
}

/* links */
.footer-links h4,
.footer-contact h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  text-decoration: none;
  color: #cbd5f5;
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

/* contact */
.footer-contact p {
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.footer-contact a {
  color: #cbd5f5;
  text-decoration: none;
}

.footer-contact a:hover {
  color: #ffffff;
}

.footer-site {
  margin-top: 14px;
  font-size: 0.85rem;
  color: #94a3b8;
}

/* bottom bar */
.footer-bottom {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);

  font-size: 0.8rem;
  color: #94a3b8;
  text-align: center;
}

/* mobile */
@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ===== HERO LAYOUT UPGRADE ===== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 85vh;
}

/* Left content stays normal */
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

/* ===== RIGHT SIDE CIRCULAR VISUAL ===== */
.hero-visual {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.08),
    inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

/* Logo image inside circle */
.hero-visual img {
  width: 58%;
  height: auto;
  opacity: 0.9;
}

/* ===== DESKTOP ONLY ===== */
@media (max-width: 1024px) {
  .hero-visual {
    display: none;
  }
}

/* ===== HERO VISUAL ANIMATION ===== */

.hero-visual {
  animation: floatY 6s ease-in-out infinite;
}

/* Logo slow micro-rotation */
.hero-visual img {
  animation: slowRotate 18s linear infinite;
}

/* Soft pulse ring */
.hero-visual::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.08);
  animation: pulseRing 4s ease-out infinite;
}

/* ===== KEYFRAMES ===== */

@keyframes floatY {
  0% {
    transform: translateY(-50%) translateY(0);
  }
  50% {
    transform: translateY(-50%) translateY(-12px);
  }
  100% {
    transform: translateY(-50%) translateY(0);
  }
}

@keyframes slowRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulseRing {
  0% {
    opacity: 0.5;
    transform: scale(0.95);
  }
  70% {
    opacity: 0;
    transform: scale(1.1);
  }
  100% {
    opacity: 0;
    transform: scale(1.1);
  }
}

/* ===============================
   INVESTOR READY THEME
   =============================== */

:root {
  --bg: #f9fafb;
  --bg-dark: #0a0a0a;
  --text-main: #0a0a0a;
  --text-muted: #475569;
  --accent: #2563eb;
  --card-bg: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text-main);
}

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

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 999;
  display: block;
  padding: 0;
  backdrop-filter: blur(16px);
  background: rgba(249, 250, 251, 0.82);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.navbar.scrolled {
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
  background: rgba(249, 250, 251, 0.95);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
  width: min(1120px, 92%);
  margin: 0 auto;
}

.logo-link {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.95rem;
  color: #1f2937;
}

.nav-links a {
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-links a:hover {
  color: #0f172a;
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(37, 99, 235, 0.35);
}

.btn-ghost {
  border-color: var(--border);
  color: #0f172a;
  background: #ffffff;
}

.btn-ghost:hover {
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px 0;
  background: #0f172a;
  border-radius: 999px;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 12px;
  padding: 12px 0 20px;
}

.nav-mobile a {
  font-weight: 500;
}

.nav-mobile-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.navbar.nav-open .nav-mobile {
  display: flex;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 90px;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.15), transparent 45%),
              radial-gradient(circle at 80% 10%, rgba(14, 165, 233, 0.12), transparent 50%),
              linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(148, 163, 184, 0.06));
  animation: gradientShift 12s ease infinite;
  z-index: 0;
}

@keyframes gradientShift {
  0% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0); }
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 4vw, 3.6rem);
  line-height: 1.1;
  margin-bottom: 18px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 600;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.cta-group {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-highlights {
  margin-top: 32px;
  display: grid;
  gap: 16px;
}

.hero-highlights h4 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.panel-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
}

.panel-card ul {
  margin: 12px 0 0 18px;
  color: var(--text-muted);
}

.panel-card.metrics {
  display: grid;
  gap: 14px;
}

.panel-card.metrics span {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

/* Sections */
.section {
  padding: 90px 0;
}

.section.alt {
  background: #f1f5f9;
}

.section-header {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 2.8vw, 2.4rem);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.12);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  font-size: 0.75rem;
  padding: 6px 12px;
  background: #eef2ff;
  border-radius: 999px;
  color: #3730a3;
  font-weight: 600;
}

.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}

.step-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.step-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 12px;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
}

.icon-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  text-align: center;
  box-shadow: var(--shadow);
}

.icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 12px;
}

.collab {
  background: linear-gradient(120deg, rgba(37, 99, 235, 0.12), rgba(14, 165, 233, 0.08));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
}

.about-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.about-card .role {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.about-card .goal {
  margin-top: 16px;
  color: var(--text-muted);
}

.about-photo img {
  border-radius: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 14px;
  background: var(--card-bg);
  padding: 24px;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-form input,
.contact-form textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-family: inherit;
}

.contact-info {
  padding: 20px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.contact-info a {
  color: var(--accent);
  font-weight: 600;
}

.footer {
  background: #0f172a;
  color: #e2e8f0;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
}

.footer h3,
.footer h4 {
  color: #ffffff;
  margin-bottom: 12px;
}

.footer a {
  color: #cbd5f5;
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  margin-top: 40px;
  color: #94a3b8;
  font-size: 0.85rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive */
@media (max-width: 960px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-actions .btn {
    display: none;
  }

  .nav-actions .nav-toggle {
    display: inline-flex;
  }

  .navbar.nav-open .nav-actions .btn {
    display: inline-flex;
  }

  .nav-mobile-actions .btn {
    width: fit-content;
  }
}

@media (max-width: 720px) {
  .hero {
    padding: 100px 0 60px;
  }

  .hero-content h1 {
    font-size: 2.4rem;
  }
}


/* ===============================
   NAV MOBILE OVERLAY
   =============================== */

.nav-mobile {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  padding: 16px 6vw 20px;
  background: rgba(249, 250, 251, 0.98);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.navbar.nav-open .nav-mobile {
  display: flex;
}

.nav-mobile a {
  padding: 6px 0;
}

@media (max-width: 960px) {
  .navbar {
    position: sticky;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-actions .btn {
    display: none;
  }
}

@media (max-width: 640px) {
  .nav-mobile {
    padding: 16px 5vw 20px;
  }

  .nav-mobile-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-mobile-actions .btn {
    width: 100%;
    justify-content: center;
  }
}


.clean-list {
  padding-left: 18px;
  color: var(--text-muted);
}

.clean-list li {
  margin: 8px 0;
}