/* ---------- CSS RESET (modern, minimal) ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
:root {
  --bg: #0e1012;
  --surface: #12161a;
  --surface-alt: #0b0d10;
  --text: #e8f0f3;
  --muted: #a7bac5;
  --primary: #3dd1b4;   /* teal */
  --accent: #9ad67b;    /* green */
  --ring: rgba(61, 209, 180, 0.45);
  --card: #171b20;
  --border: #22303a;
  --shadow: rgba(0,0,0,0.25);
}
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color: var(--text);
  background: url("assets/algae-bg.png") center/cover no-repeat fixed;
radial-gradient(1200px 600px at 70% -10%, rgba(61,209,180,0.2), transparent 50%),
              radial-gradient(1000px 500px at -20% 30%, rgba(154,214,123,0.15), transparent 50%),
              var(--bg);
  line-height: 1.6;
}
.container { width: min(1100px, 92vw); margin: 0 auto; }
.skip-link { position: absolute; left: -9999px; top: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; background: var(--primary); color: #00221a; padding: .5rem .75rem; border-radius: .5rem; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: linear-gradient(180deg, rgba(14,16,18,0.85), rgba(14,16,18,0.6)); backdrop-filter: blur(6px); border-bottom: 1px solid var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; padding: .9rem 0; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; }
.brand img { width: 28px; height: 28px; }
.nav-menu { display: flex; gap: 1rem; align-items: center; }
.nav-menu a { padding: .6rem .8rem; border-radius: .6rem; color: var(--muted); }
.nav-menu a:hover { background: var(--surface); color: var(--text); }
.btn.small { padding: .4rem .7rem; font-size: .9rem; }

.nav-toggle { display: none; background: transparent; border: 1px solid var(--border); color: var(--text); padding: .5rem .6rem; border-radius: .5rem; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  .nav-menu { display: none; position: absolute; right: 1rem; top: 3.5rem; background: var(--surface); border: 1px solid var(--border); padding: .5rem; border-radius: .6rem; flex-direction: column; width: 220px; box-shadow: 0 20px 40px var(--shadow); }
  .nav-menu.open { display: flex; }
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: 5rem 0 3rem; }
.hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: center; }
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1; margin: 0 0 1rem; }
.lede { font-size: 1.1rem; color: var(--muted); }
.actions { display: flex; gap: .8rem; margin-top: 1.25rem; }
.badges { display: flex; gap: .75rem; margin-top: 1rem; flex-wrap: wrap; }
.badges li { background: var(--surface); border: 1px solid var(--border); padding: .4rem .6rem; border-radius: 999px; font-size: .9rem; color: var(--muted); }
.hero-media { display: grid; place-items: center; }
.glass-card { background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border: 1px solid var(--border); border-radius: 1rem; padding: 1.2rem; display: grid; gap: .6rem; box-shadow: 0 30px 60px var(--shadow); width: min(380px, 90%); }
.stat { display: flex; align-items: center; gap: .75rem; }
.stat .num { font-weight: 700; font-size: 1.35rem; color: var(--primary); }
.stat .lbl { color: var(--muted); }

.wave { height: 80px; background: radial-gradient(60% 200% at 50% 0%, rgba(61,209,180,0.18), transparent 60%); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 4rem; }
}

/* ---------- Sections ---------- */
.section { padding: 3rem 0; }
.section h2 { font-size: 1.8rem; margin-bottom: 1rem; }
.section-alt { background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,0)); border-block: 1px solid var(--border); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: .9rem; padding: 1rem; box-shadow: 0 20px 40px var(--shadow); }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }

.two-col { display: grid; grid-template-columns: 1.1fr 1fr; gap: 2rem; align-items: center; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

.illustration { border: 1px dashed var(--border); border-radius: .8rem; aspect-ratio: 4/3; display: grid; place-items: center; color: var(--muted); padding: 1rem; }

/* ---------- Timeline ---------- */
.timeline { position: relative; display: grid; gap: 1rem; }
.tl-item { position: relative; padding-left: 1.5rem; }
.tl-dot { position: absolute; left: 0; top: .6rem; width: .6rem; height: .6rem; background: var(--primary); border-radius: 50%; box-shadow: 0 0 0 6px rgba(61,209,180,0.15); }
.tl-content h3 { margin: 0 0 .25rem; }
.tl-content p { margin: 0; color: var(--muted); }

/* ---------- Contact ---------- */
.contact-form { display: grid; gap: .8rem; background: var(--card); border: 1px solid var(--border); border-radius: .9rem; padding: 1rem; }
.contact-form label { display: grid; gap: .35rem; }
.contact-form input, .contact-form textarea {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  padding: .7rem .8rem; border-radius: .6rem; outline: none;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 .2rem var(--ring); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
@media (max-width: 700px) { .grid { grid-template-columns: 1fr; } }

.btn { display: inline-block; background: var(--primary); color: #00221a; padding: .7rem 1rem; border-radius: .7rem; font-weight: 600; border: 1px solid transparent; }
.btn:hover { filter: brightness(1.05); }
.btn.ghost { background: transparent; border-color: var(--border); color: var(--text); }

.small.note { color: var(--muted); font-size: .9rem; margin-top: .5rem; }

/* ---------- Footer ---------- */
.site-footer { padding: 2rem 0; border-top: 1px solid var(--border); background: linear-gradient(180deg, rgba(0,0,0,0), rgba(255,255,255,.03)); }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1rem; }
.foot-grid ul li { margin: .2rem 0; color: var(--muted); }
.legal { color: var(--muted); }
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr; } }