/* ============================================================
   Thalassa Softwaraki — design system
   Dark, deep-sea theme. Self-hosted variable fonts.
   ============================================================ */

@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/space-grotesk.woff2") format("woff2-variations");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../fonts/inter.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #040d16;
  --bg-raised: #081724;
  --surface: rgba(148, 200, 226, 0.05);
  --surface-strong: rgba(148, 200, 226, 0.09);
  --ink: #e9f4fa;
  --muted: #90a9ba;
  --faint: #5e7789;
  --line: rgba(146, 195, 220, 0.14);
  --line-strong: rgba(146, 195, 220, 0.26);
  --aqua: #35e0c5;
  --sea: #41b1f2;
  --accent-grad: linear-gradient(115deg, #35e0c5 10%, #41b1f2 90%);
  --display: "Space Grotesk", "Avenir Next", sans-serif;
  --body: "Inter", "Helvetica Neue", sans-serif;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 24px 70px rgba(1, 8, 14, 0.55);
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: rgba(53, 224, 197, 0.32);
  color: #f2fffc;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.2rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  background: var(--aqua);
  color: #04241d;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 1rem;
}

.container {
  width: min(1140px, calc(100% - 3rem));
  margin-inline: auto;
}

.section {
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
  position: relative;
}

/* ---------- ambient background ---------- */

.sea-background {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 700px at 82% -12%, rgba(65, 177, 242, 0.13), transparent 62%),
    radial-gradient(900px 620px at 4% 32%, rgba(53, 224, 197, 0.08), transparent 60%),
    radial-gradient(1000px 900px at 55% 118%, rgba(23, 88, 128, 0.22), transparent 64%),
    var(--bg);
}

.sea-background::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(163, 216, 238, 0.055) 1px, transparent 1.4px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, black, transparent 72%);
}

/* ---------- typography ---------- */

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 0 1.1rem;
  text-wrap: balance;
}

h1 { font-size: clamp(2.6rem, 6.4vw, 4.6rem); }
h2 { font-size: clamp(1.9rem, 3.8vw, 2.9rem); }
h3 { font-size: 1.28rem; letter-spacing: -0.015em; line-height: 1.25; }

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.lead {
  font-size: clamp(1.06rem, 1.6vw, 1.22rem);
  max-width: 58ch;
  color: #b7cad7;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.3rem;
  font-family: var(--display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--aqua);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent-grad);
}

.grad-text {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

a {
  color: var(--aqua);
}

:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  background: rgba(4, 13, 22, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}

.brand svg {
  width: 30px;
  height: 30px;
  flex: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.7rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 550;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
}

.nav-cta {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0 9px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.82rem 1.45rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.97rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  background: var(--accent-grad);
  color: #03261f;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(53, 224, 197, 0.28);
  filter: brightness(1.05);
}

.button-outline {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}

.button-outline:hover,
.button-outline:focus-visible {
  box-shadow: none;
  border-color: var(--aqua);
  color: var(--aqua);
}

.button-small {
  padding: 0.58rem 1.1rem;
  font-size: 0.88rem;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: clamp(4.5rem, 9vw, 7rem) 0 clamp(3.5rem, 7vw, 6rem);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  min-height: min(82vh, 860px);
}

.hero-sonar {
  position: absolute;
  z-index: -1;
  right: min(-12vw, -140px);
  top: -18%;
  width: min(60vw, 880px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    rgba(94, 190, 232, 0.09) 0 1px,
    transparent 1px 72px
  );
  mask-image: radial-gradient(circle, black 20%, transparent 68%);
  pointer-events: none;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 2rem;
}

.hero-meta span {
  font-size: 0.83rem;
  font-weight: 550;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.1rem;
}

/* ---------- chat mock panel ---------- */

.chat-panel {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(16, 38, 55, 0.92), rgba(7, 20, 31, 0.94));
  box-shadow: var(--shadow);
  padding: 1.3rem 1.3rem 1.1rem;
  font-size: 0.9rem;
  max-width: 460px;
  justify-self: end;
  width: 100%;
}

.chat-panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  background: var(--accent-grad);
  opacity: 0.18;
  filter: blur(26px);
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.9rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pulse-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 0 0 rgba(53, 224, 197, 0.5);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  70% { box-shadow: 0 0 0 9px rgba(53, 224, 197, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 224, 197, 0); }
}

.chat-msg {
  max-width: 88%;
  padding: 0.72rem 0.95rem;
  border-radius: 14px;
  margin-bottom: 0.7rem;
  line-height: 1.5;
}

.chat-msg.customer {
  background: rgba(146, 195, 220, 0.1);
  border: 1px solid var(--line);
  color: #c9dae5;
  border-bottom-left-radius: 4px;
}

.chat-msg.agent {
  background: rgba(53, 224, 197, 0.1);
  border: 1px solid rgba(53, 224, 197, 0.28);
  color: #d7f7f0;
  margin-left: auto;
  border-bottom-right-radius: 4px;
}

.chat-msg .msg-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.3rem;
}

.chat-msg.agent .msg-label {
  color: rgba(53, 224, 197, 0.75);
}

.chat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.9rem;
}

.chat-chips span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
  background: rgba(4, 13, 22, 0.5);
}

.chat-chips .ok {
  color: #7ef0da;
  border-color: rgba(53, 224, 197, 0.35);
}

/* ---------- ticker strip ---------- */

.ticker {
  border-block: 1px solid var(--line);
  background: rgba(8, 23, 36, 0.6);
  overflow: hidden;
  padding: 1.05rem 0;
}

.ticker-track {
  display: flex;
  gap: 3.5rem;
  width: max-content;
  animation: ticker 36s linear infinite;
}

.ticker-track span {
  display: inline-flex;
  align-items: center;
  gap: 3.5rem;
  font-family: var(--display);
  font-size: 0.86rem;
  font-weight: 550;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  white-space: nowrap;
}

.ticker-track span::after {
  content: "◦";
  color: var(--aqua);
}

@keyframes ticker {
  to { transform: translateX(-50%); }
}

/* ---------- section headings ---------- */

.section-heading {
  max-width: 62ch;
  margin-bottom: clamp(2.2rem, 5vw, 3.5rem);
}

/* ---------- products bento ---------- */

.bento {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}

.bento .card:nth-child(1),
.bento .card:nth-child(4) {
  grid-column: span 2;
}

.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--surface-strong), var(--surface));
  padding: 1.7rem 1.6rem 1.5rem;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px 200px at 20% 0%, rgba(53, 224, 197, 0.09), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.card:hover::after {
  opacity: 1;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  border: 1px solid rgba(53, 224, 197, 0.3);
  background: rgba(53, 224, 197, 0.08);
  color: var(--aqua);
  margin-bottom: 1.15rem;
}

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card ul {
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.card li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent-grad);
  transform: rotate(45deg);
}

/* ---------- about ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.fact-list {
  margin: 1.8rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.fact-list li {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem 0.2rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
}

.fact-list .k {
  color: var(--faint);
}

.fact-list .v {
  color: var(--ink);
  font-weight: 550;
  text-align: right;
}

.principles {
  display: grid;
  gap: 1rem;
}

.principle {
  border: 1px solid var(--line);
  border-left: 3px solid var(--aqua);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 1.15rem 1.3rem 0.9rem;
}

.principle h3 {
  font-size: 1.06rem;
  margin-bottom: 0.4rem;
}

.principle p {
  font-size: 0.94rem;
  margin-bottom: 0.2rem;
}

/* ---------- contact ---------- */

.contact-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.8rem, 4vw, 3.5rem);
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(700px 340px at 0% 0%, rgba(53, 224, 197, 0.09), transparent 65%),
    linear-gradient(170deg, rgba(14, 33, 48, 0.9), rgba(6, 17, 27, 0.94));
  padding: clamp(1.8rem, 4vw, 3rem);
  box-shadow: var(--shadow);
}

.contact-email {
  display: inline-block;
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 600;
  color: var(--aqua);
  text-decoration: none;
  margin: 0.4rem 0 0.8rem;
  border-bottom: 1px solid rgba(53, 224, 197, 0.35);
  padding-bottom: 2px;
}

.contact-email:hover {
  border-bottom-color: var(--aqua);
}

.contact-location {
  font-size: 0.9rem;
  color: var(--faint);
}

.contact-form {
  display: grid;
  gap: 0.9rem;
}

.field label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: #b7cad7;
  margin-bottom: 0.35rem;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(4, 13, 22, 0.6);
  color: var(--ink);
  font: inherit;
  padding: 0.75rem 0.9rem;
  transition: border-color 0.2s ease;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--faint);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--aqua);
  box-shadow: 0 0 0 3px rgba(53, 224, 197, 0.16);
}

.field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--faint);
  margin: 0;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(4, 13, 22, 0.8);
  padding: 2.6rem 0 2.2rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  align-items: flex-start;
  justify-content: space-between;
}

.footer-brand {
  max-width: 34ch;
}

.footer-brand p {
  font-size: 0.86rem;
  color: var(--faint);
  margin: 0.7rem 0 0;
}

.footer-links {
  display: flex;
  gap: 3rem;
}

.footer-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--ink);
}

.footer-links .col-title {
  font-family: var(--display);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.4rem;
}

.footer-legal {
  margin-top: 2.2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  justify-content: space-between;
  color: var(--faint);
  font-size: 0.82rem;
}

.footer-legal p { margin: 0; color: var(--faint); }

/* ---------- doc pages (privacy / support) ---------- */

.doc-header {
  padding: clamp(3.5rem, 7vw, 5.5rem) 0 clamp(2rem, 4vw, 3rem);
}

.doc-header .lead {
  max-width: 64ch;
}

.doc-updated {
  font-size: 0.85rem;
  color: var(--faint);
}

.doc-body {
  max-width: 760px;
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

.doc-body section {
  border-top: 1px solid var(--line);
  padding: 1.9rem 0 0.9rem;
}

.doc-body h2 {
  font-size: 1.32rem;
  margin-bottom: 0.8rem;
}

.doc-body p {
  max-width: 68ch;
}

/* ---------- 404 ---------- */

.notfound {
  min-height: 70vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: 4rem 0;
}

.notfound .depth {
  font-family: var(--display);
  font-size: clamp(4.5rem, 16vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.5rem;
}

/* ---------- reveal on scroll (JS-gated: no-JS users see everything) ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.js .reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .chat-panel {
    justify-self: start;
  }

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

  .bento .card:nth-child(1),
  .bento .card:nth-child(4) {
    grid-column: auto;
  }

  .about-grid,
  .contact-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 1.5rem;
    right: 1.5rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding: 0.7rem;
    border: 1px solid var(--line-strong);
    border-radius: 16px;
    background: rgba(7, 19, 30, 0.97);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease;
  }

  .nav-links.open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .nav-links a {
    display: block;
    padding: 0.65rem 0.8rem;
    border-radius: 10px;
  }

  .nav-links a:hover {
    background: var(--surface-strong);
  }

  .footer-links {
    gap: 2rem;
    flex-wrap: wrap;
  }
}

@media (max-width: 500px) {
  /* On narrow phones the brand + toggle + CTA don't fit; the CTA's
     destinations remain reachable from the menu and page content. */
  .nav-toggle ~ .nav-cta {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .ticker-track {
    animation: none;
    width: auto;
    flex-wrap: wrap;
  }

  .ticker-track span[aria-hidden="true"] {
    display: none;
  }
}