/* ============================================================
   Ocean Quest — Styles
   Deep ocean theme — no external libraries required
============================================================ */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --ocean-deep:    #0a1628;
  --ocean-mid:     #0d3b6e;
  --ocean-surface: #1a6ea8;
  --foam:          #a8d8ea;
  --sand:          #c4a24a;
  --accent:        #ff6b35;
  --card-bg:       #f0f8ff;
  --text-dark:     #1a2840;
  --text-light:    #e8f4fd;
  --text-muted:    #7eb8d4;
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--ocean-deep);
  color: var(--text-light);
  min-height: 100vh;
}

/* ── HEADER ─────────────────────────────────────────────────── */

header {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
  background: linear-gradient(180deg, #05101f 0%, var(--ocean-deep) 100%);
}

header h1 {
  font-size: clamp(2rem, 6vw, 3.8rem);
  letter-spacing: -0.02em;
  color: var(--foam);
  text-shadow: 0 2px 24px rgba(168, 216, 234, 0.45);
}

.header-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.2rem;
}

.logo-img {
  height: 56px;
  width: auto;
  object-fit: contain;
}

.logo-ktech {
  /* ktech SVG is light — keep it visible on the dark header */
  filter: brightness(0) invert(1);
  height: 44px;
}

header p {
  margin-top: 0.6rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.badge {
  display: inline-block;
  margin-top: 1rem;
  background: var(--ocean-surface);
  color: white;
  padding: 0.35rem 1.1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ── OCEAN SECTION ──────────────────────────────────────────── */

#ocean {
  position: relative;
  width: 100%;
  height: 600px;
  background:
    linear-gradient(
      180deg,
      rgba(26, 110, 168, 0.35) 0%,
      rgba(13, 59, 110, 0.55) 50%,
      rgba(10, 22, 40, 0.75)  100%
    ),
    url('bg.png') center center / cover no-repeat;
  overflow: hidden;
  border-top: 3px solid rgba(168, 216, 234, 0.25);
  border-bottom: 3px solid rgba(168, 216, 234, 0.1);
}

/* Wavy surface shimmer */
#ocean::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: repeating-linear-gradient(
    90deg,
    rgba(255,255,255,0.12) 0px,
    rgba(255,255,255,0.04) 20px,
    rgba(255,255,255,0.12) 40px
  );
}

/* Sandy ocean floor */
#ocean::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 44px;
  background: linear-gradient(180deg, transparent, rgba(196, 162, 74, 0.35));
  pointer-events: none;
}

/* ── FISH ───────────────────────────────────────────────────── */

.fish {
  position: absolute;
  width: 72px;
  height: 48px;
  cursor: pointer;
  /* SVG fish faces LEFT natively, so we flip it to face RIGHT for rightward swimming */
  transform: scaleX(-1);
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.45));
  transition: filter 0.2s, transform 0.2s;
  /* animation-name, duration, and delay are set inline by app.js */
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.fish:hover {
  filter: drop-shadow(0 4px 14px rgba(255, 255, 255, 0.5)) brightness(1.2);
  transform: scaleX(-1) scale(1.3);
  z-index: 10;
}

.fish svg {
  width: 100%;
  height: 100%;
}

/* Fish swimming left → right (default, faces right via scaleX(-1)) */
@keyframes swimRight {
  0%   { left: -90px; }
  100% { left: calc(100% + 90px); }
}

/* Fish swimming right → left — reset flip so it faces left naturally */
@keyframes swimLeft {
  0%   { left: calc(100% + 90px); }
  100% { left: -90px; }
}

.fish.swim-left {
  animation-name: swimLeft;
  transform: none;  /* SVG faces left natively — no flip needed */
}

.fish.swim-left:hover {
  transform: scale(1.3);
}

/* ── GALLERY ────────────────────────────────────────────────── */

#gallery {
  padding: 3.5rem 1.5rem 4rem;
  background: linear-gradient(180deg, var(--ocean-deep) 0%, #060f1c 100%);
}

#gallery h2 {
  text-align: center;
  font-size: 2rem;
  color: var(--foam);
  margin-bottom: 0.5rem;
}

.gallery-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.fish-card {
  background: var(--card-bg);
  color: var(--text-dark);
  border-radius: 18px;
  padding: 1.5rem 1rem 1.2rem;
  text-align: center;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  transition: transform 0.2s, box-shadow 0.2s;
}

.fish-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.6);
}

.fish-avatar {
  width: 96px;
  height: 64px;
  margin: 0 auto 0.9rem;
}

.fish-avatar svg {
  width: 100%;
  height: 100%;
}

.fish-card h3 {
  font-size: 1.15rem;
  color: var(--text-dark);
  margin-bottom: 0.4rem;
}

.fish-card p {
  font-size: 0.84rem;
  color: #4a6a80;
  line-height: 1.45;
}

/* ── FOOTER ─────────────────────────────────────────────────── */

footer {
  text-align: center;
  padding: 2rem 1rem;
  background: #040d1a;
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer strong {
  color: var(--foam);
}

.footer-hint {
  margin-top: 0.5rem;
  opacity: 0.5;
  font-size: 0.8rem;
}

footer code {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-size: 0.78rem;
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */

@media (max-width: 600px) {
  #ocean {
    height: 220px;
  }

  .fish {
    width: 54px;
    height: 36px;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
  }
}