/* ===== Variables ===== */
:root {
  --color-bg: #f8f9fb;
  --color-bg-hero: #0d1f2d;
  --color-surface: #ffffff;
  --color-text: #1a2332;
  --color-text-muted: #5c6b7a;
  --color-accent: #0d9488;
  --color-accent-hover: #0f766e;
  --color-accent-soft: rgba(13, 148, 136, 0.12);
  --color-border: #e2e8f0;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(13, 31, 45, 0.06);
  --shadow-hover: 0 12px 40px rgba(13, 31, 45, 0.1);
  --transition: 0.2s ease;
}

/* ===== Reset & base ===== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
}

.logo:hover {
  color: var(--color-text);
}

.logo-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.logo img {
  display: block;
  height: 80px;
  width: auto;
  max-width: 380px;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.logo:hover img {
  opacity: 0.9;
}

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

.nav a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: 6rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--color-bg-hero);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(13, 148, 136, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(13, 148, 136, 0.08) 0%, transparent 40%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  width: 100%;
  color: #fff;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-logo {
  flex-shrink: 0;
}

.hero-logo img {
  display: block;
  height: clamp(240px, 36vw, 400px);
  width: auto;
  max-width: 640px;
  object-fit: contain;
  mix-blend-mode: screen;
}

.hero-tag {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 0.85rem;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 1.25rem;
  max-width: 18ch;
}

.hero-desc {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 42ch;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

/* ===== Sections ===== */
.section {
  padding: 4.5rem 0;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

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

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--color-text);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin: 0 0 2.5rem;
  max-width: 50ch;
}

/* ===== Solutions grid ===== */
.solutions {
  background: var(--color-surface);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.card {
  padding: 1.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-hover);
}

.card-link {
  display: block;
  color: inherit;
}

.card-link:hover {
  color: inherit;
}

.card-link h3 {
  color: var(--color-text);
}

.card-link p {
  color: var(--color-text-muted);
}

.card-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== Who it's for ===== */
.who-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: 600px;
}

.who-list li {
  padding: 1rem 1.25rem;
  margin-bottom: 0.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  color: var(--color-text-muted);
}

.who-list li strong {
  color: var(--color-text);
  display: block;
  margin-bottom: 0.25rem;
}

/* ===== Features ===== */
.features {
  background: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.feature:last-child {
  border-bottom: none;
}

.feature-label {
  display: inline-block;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.feature p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== CTA ===== */
.cta {
  padding: 5rem 0;
  background: var(--color-bg-hero);
  color: #fff;
  text-align: center;
}

.cta-inner {
  max-width: 560px;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

.cta-desc {
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 1.5rem;
}

.cta .btn-primary {
  background: var(--color-accent);
}

.cta .btn-primary:hover {
  background: var(--color-accent-hover);
}

/* ===== Footer ===== */
.footer {
  padding: 2.5rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  margin: 0 0 0.5rem;
}

.footer-copy {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 5rem;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 1rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.85rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .nav-toggle span {
    transition: var(--transition);
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-title {
    max-width: none;
  }

  .hero-desc {
    max-width: none;
  }

  .hero-logo img {
    height: 200px;
  }

  .hero {
    min-height: auto;
    padding: 5rem 0 3rem;
  }

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

  .section {
    padding: 3rem 0;
  }
}