/* =============================================
   DPV Snorkel Experience — Base One Microsite
   Design: Matches Baseone.it visual language
   ============================================= */

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

:root {
  --color-bg:        #ffffff;
  --color-surface:   #f5f5f5;
  --color-dark:      #1a1a1a;
  --color-dark-alt:  #101820;
  --color-charcoal:  #32373c;
  --color-ocean:     #0693e3;
  --color-ocean-dk:  #0575c4;
  --color-teal:      #00bcd4;
  --color-text:      #2c2c2c;
  --color-muted:     #6b7280;
  --color-border:    #e5e7eb;
  --color-white:     #ffffff;

  --font:            'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semi:   600;
  --font-weight-bold:   700;

  --radius:     4px;
  --radius-lg:  8px;

  --max-w:       1200px;
  --max-w-narrow: 800px;

  --nav-h: 90px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  background: rgba(255, 255, 255, 0.80);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  overflow: visible;
}

.nav-logo {
  align-self: flex-start;
  position: relative;
  z-index: 101;
  background: rgba(255, 255, 255, 0.70);
  padding: 0 18px 38px;
  border-radius: 0 0 12px 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.nav-logo img {
  height: 120px;
  width: auto;
  object-fit: contain;
  display: block;
  margin-top: 35px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

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

.nav-back {
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-muted);
  transition: color 0.2s;
}
.nav-back:hover { color: var(--color-ocean); }

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.8rem;
  background: var(--color-ocean);
  color: var(--color-white);
}
.btn-sm:hover { background: var(--color-ocean-dk); }

.btn-primary {
  background: var(--color-charcoal);
  color: var(--color-white);
  border-color: var(--color-charcoal);
}
.btn-primary:hover {
  background: var(--color-dark);
  border-color: var(--color-dark);
}

.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

.btn-ghost-light {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.4);
}
.btn-ghost-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.btn-large {
  padding: 0.9rem 2.5rem;
  font-size: 0.95rem;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-dark-alt);
  background-image:
    url('resourcesImages/517731003_1547211239982732_2017038402536755000_n.jpg');
  background-size: cover;
  background-position: center 40%;
  background-attachment: fixed;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(10, 24, 32, 0.78) 0%,
    rgba(6, 147, 227, 0.18) 60%,
    rgba(10, 24, 32, 0.65) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  padding: 6rem 2rem 4rem;
  color: var(--color-white);
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 1rem;
}

.hero-headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-subhead {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: var(--font-weight-normal);
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 2rem;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  list-style: none;
  margin-bottom: 2.5rem;
}

.hero-highlights li {
  font-size: 1.1rem;
  font-weight: var(--font-weight-medium);
  color: rgba(255,255,255,0.75);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.hero-highlights li::before {
  content: '—';
  color: var(--color-ocean);
  font-weight: var(--font-weight-bold);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.4);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
  z-index: 2;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%        { transform: translateX(-50%) translateY(8px); }
}

/* --- Sections --- */
.section {
  padding: 6rem 2rem;
}

.section-alt {
  background: var(--color-surface);
}

.section-dark {
  background: var(--color-dark-alt);
  color: var(--color-white);
}

.section-dark h2 { color: var(--color-white); }
.section-dark p  { color: rgba(255,255,255,0.8); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.container-narrow {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
}

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

/* --- Typography --- */
.section-label {
  font-size: 0.75rem;
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ocean);
  margin-bottom: 0.75rem;
}

.section-label-light {
  color: rgba(6, 147, 227, 0.8);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: var(--font-weight-semi);
  color: var(--color-dark);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
}

.lead {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  font-style: italic;
}

/* --- Lists --- */
.check-list {
  list-style: none;
  margin-top: 0.5rem;
}
.check-list li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 1rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-ocean);
  font-weight: var(--font-weight-bold);
}

.icon-list {
  list-style: none;
}
.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0;
  font-size: 1rem;
  border-bottom: 1px solid var(--color-border);
}
.icon { color: var(--color-ocean); font-size: 0.9rem; flex-shrink: 0; margin-top: 2px; }
.icon-plus { font-size: 1.1rem; font-weight: bold; }

.req-list {
  list-style: none;
}
.req-list li {
  padding: 0.65rem 0;
  padding-left: 1.75rem;
  position: relative;
  font-size: 1rem;
  border-bottom: 1px solid var(--color-border);
}
.req-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-charcoal);
  font-weight: var(--font-weight-bold);
}

.safety-list {
  list-style: none;
  margin-top: 0.5rem;
}
.safety-list li {
  padding: 0.65rem 0;
  padding-left: 1.75rem;
  position: relative;
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.safety-list li::before {
  content: '◉';
  position: absolute;
  left: 0;
  color: var(--color-teal);
  font-size: 0.75rem;
  top: 0.85rem;
}

/* --- Grid --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 1.5rem;
}

/* --- Steps --- */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 2rem;
  border-left: 2px solid var(--color-border);
  padding-left: 0;
}

.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.75rem 0 1.75rem 2rem;
  position: relative;
}

.step::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 2rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-ocean);
  border: 2px solid var(--color-bg);
}

.step-num {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-border);
  line-height: 1;
  flex-shrink: 0;
  letter-spacing: -0.04em;
  min-width: 3rem;
}

.step h3 {
  margin-top: 0.1rem;
  margin-bottom: 0.35rem;
}

.step p {
  font-size: 0.95rem;
  color: var(--color-muted);
}

/* --- Full bleed images --- */
.full-bleed-image {
  width: 100%;
  height: 520px;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.img-sea-1 {
  background-image: url('resourcesImages/snorkeller-using-suex-nemo_1024x1024.webp');
  background-position: center 40%;
}

.img-sea-2 {
  background-image: url('resourcesImages/vr-nemo-divers_d6afb24b-476a-4395-8c4b-748b74755586_1400x.webp');
  background-position: center 30%;
}

/* --- FAQ --- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 1.5rem;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  padding: 1.25rem 0;
  font-size: 1rem;
  font-weight: var(--font-weight-semi);
  color: var(--color-dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: var(--font-weight-normal);
  color: var(--color-ocean);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 0 1.25rem;
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* --- Footer --- */
.footer {
  background: #0d2a4a;
  color: rgba(255,255,255,0.7);
  padding: 3.5rem 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.25rem;
}

.footer-logo img {
  height: 130px;
  width: auto;
  opacity: 0.85;
  filter: brightness(0) invert(1);
}

.footer-text {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 540px;
}
.footer-text a {
  color: var(--color-ocean);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  margin-top: 0.5rem;
}
.footer-copy a { color: rgba(255,255,255,0.5); }

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    background-attachment: scroll;
    background-position: center center;
    background-size: cover;
  }

  .full-bleed-image {
    background-attachment: scroll;
    height: 300px;
  }

  .nav {
    padding: 0 1.25rem;
  }
  .nav-logo {
    padding: 0 10px 20px;
  }
  .nav-logo img {
    height: 77px;
    margin-top: 18px;
  }
  .nav-back { display: none; }

  .hero-content {
    padding: 3rem 1.5rem;
  }

  .section {
    padding: 4rem 1.25rem;
  }

  .grid-2 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .full-bleed-image {
    height: 260px;
    background-attachment: scroll;
  }

  .step {
    padding-left: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-highlights {
    gap: 0.4rem 1rem;
  }
  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }
  .btn-large {
    width: 100%;
    text-align: center;
  }
}