/* EM Projects — shared site styles (DiveIQ + future apps) */

:root {
  --ocean-deep: #001f3f;
  --ocean-dark: #003d6b;
  --ocean-medium: #0066a3;
  --ocean-light: #0099cc;
  --teal: #00ced1;
  --teal-light: #40e0d0;
  --surface: #f0f7fa;
  --card: #ffffff;
  --text: #0a1628;
  --text-muted: #4a6278;
  --border: #c5dce8;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 31, 63, 0.12);
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --max: 1080px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
}

a {
  color: var(--ocean-medium);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

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

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--ocean-deep), var(--ocean-dark));
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
}

.brand:hover {
  color: var(--teal-light);
}

.brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: block;
  object-fit: contain;
}

.card-app-logo {
  width: 120px;
  height: auto;
  display: block;
  margin-bottom: 1rem;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 31, 63, 0.15);
}

.page-header-logo {
  display: block;
  width: min(180px, 55vw);
  height: auto;
  margin: 0 auto 1rem;
  border-radius: 14px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}

.page-header--with-logo {
  text-align: center;
}

.page-header--with-logo .breadcrumb {
  text-align: left;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.nav a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--ocean-deep) 0%, var(--ocean-medium) 55%, var(--teal) 120%);
  color: #fff;
  padding: 4rem 1.25rem 5rem;
  text-align: center;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero .tagline {
  margin: 0 auto 1.5rem;
  max-width: 36rem;
  font-size: 1.15rem;
  opacity: 0.92;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.15s, box-shadow 0.15s;
}

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

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

.btn-primary:hover {
  color: var(--ocean-deep);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.65);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-secondary {
  background: var(--ocean-medium);
  color: #fff;
}

.btn-secondary:hover {
  background: var(--ocean-dark);
  color: #fff;
}

/* Layout */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

section {
  margin-bottom: 3rem;
}

section h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  color: var(--ocean-dark);
}

section h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.1rem;
  color: var(--ocean-medium);
}

.lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 42rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.card.featured {
  border-color: var(--teal);
  box-shadow: 0 8px 32px rgba(0, 206, 209, 0.15);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--ocean-medium), var(--teal));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  color: var(--ocean-dark);
}

.card p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  flex: 1;
  font-size: 0.95rem;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: var(--teal);
  color: var(--ocean-deep);
  margin-bottom: 0.5rem;
}

.badge-muted {
  background: var(--border);
  color: var(--text-muted);
}

/* Feature list */
.features {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.features li {
  padding: 0.4rem 0 0.4rem 1.75rem;
  position: relative;
  color: var(--text);
}

.features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 700;
}

/* Legal / prose */
.prose {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.prose h1 {
  margin-top: 0;
  color: var(--ocean-dark);
}

.prose h2 {
  margin-top: 2rem;
  font-size: 1.2rem;
}

.prose p,
.prose ul {
  color: var(--text);
}

.prose ul {
  padding-left: 1.25rem;
}

.prose .updated {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Contact */
.contact-block {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.contact-block a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--ocean-dark);
  font-weight: 500;
}

.contact-block a:hover {
  border-color: var(--teal);
  color: var(--ocean-medium);
}

/* Footer */
.site-footer {
  background: var(--ocean-deep);
  color: rgba(255, 255, 255, 0.75);
  padding: 2rem 1.25rem;
  font-size: 0.9rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-footer a {
  color: var(--teal-light);
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
}

/* Page header (inner pages) */
.page-header {
  background: linear-gradient(135deg, var(--ocean-dark), var(--ocean-medium));
  color: #fff;
  padding: 2.5rem 1.25rem;
}

.page-header h1 {
  margin: 0;
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.page-header p {
  max-width: var(--max);
  margin: 0.5rem auto 0;
  opacity: 0.9;
}

.breadcrumb {
  max-width: var(--max);
  margin: 0 auto;
  font-size: 0.85rem;
  opacity: 0.85;
}

.breadcrumb a {
  color: var(--teal-light);
  text-decoration: none;
}

/* Responsive nav */
@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 0.5rem;
  }

  .nav.is-open {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
  }
}