/* ==========================================================================
   Design tokens and document defaults
   ========================================================================== */

:root {
  --ink: #07130f;
  --paper: #f3f1e9;
  --acid: #b9ff5d;
  --muted: #9da9a3;
  --sans: "Manrope", system-ui, sans-serif;
  --mono: "DM Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* A lightweight texture prevents the full-screen photograph from looking flat. */
.noise {
  position: fixed;
  inset: 0;
  z-index: 100;
  opacity: 0.035;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

/* ==========================================================================
   Opening loader
   The loader stays visible while data/qa.json is being fetched.
   ========================================================================== */

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
  transition:
    transform 700ms cubic-bezier(0.76, 0, 0.24, 1),
    visibility 700ms;
}

.site-loader::before {
  content: "";
  position: absolute;
  top: -42%;
  left: 0;
  width: 100%;
  height: 42%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(185, 255, 93, 0.12) 72%,
    var(--acid)
  );
  box-shadow: 0 14px 70px rgba(185, 255, 93, 0.24);
  animation: loader-scan 1.15s cubic-bezier(0.65, 0, 0.35, 1) both;
}

.site-loader.is-hidden {
  transform: translateY(-100%);
  visibility: hidden;
  pointer-events: none;
}

.loader-mark {
  position: relative;
  width: 94px;
  height: 116px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  animation: loader-drop 650ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.loader-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter:
    drop-shadow(0 0 14px rgba(175, 111, 255, 0.36))
    drop-shadow(0 18px 22px rgba(0, 0, 0, 0.32));
}

.loader-copy {
  position: relative;
  z-index: 2;
  min-height: 38px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 9px;
}

.site-loader p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font: 500 10px var(--mono);
  letter-spacing: 0.09em;
}

.loader-dots {
  display: flex;
  gap: 5px;
}

.loader-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--acid);
  animation: loader-dot 900ms infinite ease-in-out;
}

.loader-dots i:nth-child(2) { animation-delay: 130ms; }
.loader-dots i:nth-child(3) { animation-delay: 260ms; }

@keyframes loader-scan {
  from { transform: translateY(0); }
  to { transform: translateY(340%); }
}

@keyframes loader-drop {
  from { opacity: 0; transform: translateY(-32px) scale(0.9); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes loader-dot {
  0%, 70%, 100% { opacity: 0.28; transform: translateY(0); }
  35% { opacity: 1; transform: translateY(-3px); }
}

/* ==========================================================================
   Single-screen layout
   ========================================================================== */

.single-screen {
  position: relative;
  width: 100%;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
  transition:
    opacity 650ms ease,
    transform 650ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.single-screen.is-loading {
  opacity: 0;
  transform: translateY(14px) scale(0.99);
}

.single-screen.is-ready {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-image {
  background-image: url("./public/assets/banner-hero.jpg");
  background-position: 50% 46%;
  background-size: cover;
  filter: saturate(0.65) contrast(1.08);
  transform: scale(1.02);
}

.hero-shade {
  background:
    radial-gradient(circle at 50% 48%, rgba(33, 116, 84, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(4, 16, 12, 0.7), rgba(4, 16, 12, 0.86)),
    rgba(4, 16, 12, 0.34);
}

.single-content {
  position: relative;
  z-index: 3;
  width: min(700px, calc(100% - 40px));
  height: 100%;
  margin: 0 auto;
  padding: clamp(22px, 4vh, 42px) 0 clamp(14px, 2.5vh, 26px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(12px, 2vh, 20px);
  align-items: center;
}

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

.welcome-line {
  margin: 0 0 8px;
  color: var(--paper);
  font-size: clamp(30px, 4vw, 50px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
}

.single-heading h1 {
  margin: 0;
  font-size: clamp(17px, 2vw, 25px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.single-heading h1 span,
.single-heading h1 em {
  display: inline;
}

.single-heading h1 em {
  color: var(--acid);
  font-weight: 500;
  font-style: normal;
}

.single-signature {
  width: clamp(105px, 14vw, 160px);
  height: clamp(32px, 5vh, 48px);
  margin: 0 auto;
  display: block;
  object-fit: contain;
  filter: invert(1);
  opacity: 0.72;
}

/* The language switch remains independent from the centered content column. */
.lang-toggle {
  position: absolute;
  z-index: 10;
  top: 22px;
  right: clamp(20px, 4vw, 56px);
  padding: 5px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  color: white;
  background: rgba(0, 0, 0, 0.18);
  cursor: pointer;
  font: 500 10px var(--mono);
}

.lang-toggle span {
  width: 30px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  border-radius: 100px;
  opacity: 0.55;
}

.lang-toggle .active {
  color: var(--ink);
  background: var(--acid);
  opacity: 1;
}

/* ==========================================================================
   Chat panel and messages
   ========================================================================== */

.chat-shell {
  width: 100%;
  height: 100%;
  min-height: 0;
  max-height: 650px;
  margin-top: clamp(8px, 1.8vh, 18px);
  align-self: stretch;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 22px;
  background: rgba(7, 19, 15, 0.82);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(22px);
}

.chat-log {
  flex: 1;
  padding: 14px 20px 12px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.18) transparent;
}

.message {
  width: fit-content;
  max-width: 88%;
  margin-bottom: 18px;
}

.message.assistant {
  position: relative;
  padding-left: 42px;
}

.message.user {
  margin-left: auto;
}

.message-label {
  margin-bottom: 7px;
  color: var(--muted);
  font: 500 8px var(--mono);
  letter-spacing: 0.08em;
}

.message.user .message-label {
  text-align: right;
}

.message p {
  margin: 0;
  padding: 13px 15px;
  white-space: pre-line;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px 14px 14px 14px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.07);
  font-size: 12px;
  line-height: 1.65;
}

.message.user p {
  color: var(--ink);
  border: 0;
  border-radius: 14px 4px 14px 14px;
  background: var(--acid);
}

.message p a {
  color: var(--acid);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}

.message.user p a {
  color: var(--ink);
}

.assistant-avatar {
  position: absolute;
  top: 15px;
  left: 0;
  width: 33px;
  height: 33px;
  overflow: hidden;
  border: 1px solid rgba(185, 255, 93, 0.28);
  border-radius: 11px;
  background: rgba(7, 19, 15, 0.78);
  box-shadow: 0 0 22px rgba(175, 111, 255, 0.14);
}

.assistant-avatar img {
  position: absolute;
  top: -4px;
  left: 50%;
  width: 56px;
  height: auto;
  max-width: none;
  transform: translateX(-50%);
}

.message-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 10px;
}

.message-cta {
  width: fit-content;
  padding: 9px 12px;
  display: block;
  border: 1px solid rgba(185, 255, 93, 0.34);
  border-radius: 8px;
  color: var(--acid);
  background: rgba(185, 255, 93, 0.06);
  font: 500 9px var(--mono);
  transition: 180ms ease;
}

.message-cta:hover {
  color: var(--ink);
  background: var(--acid);
}

.typing {
  display: flex;
  gap: 4px;
  padding: 15px !important;
}

.typing i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--muted);
  animation: bounce 900ms infinite alternate;
}

.typing i:nth-child(2) { animation-delay: 150ms; }
.typing i:nth-child(3) { animation-delay: 300ms; }

@keyframes bounce {
  to { transform: translateY(-4px); opacity: 0.45; }
}

/* ==========================================================================
   Suggested questions and input controls
   ========================================================================== */

.prompt-chips {
  padding: 4px 20px 12px;
  display: flex;
  gap: 7px;
  overflow-x: auto;
}

.prompt-chips button {
  flex: 0 0 auto;
  padding: 8px 10px;
  border: 1px solid rgba(185, 255, 93, 0.23);
  border-radius: 100px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(185, 255, 93, 0.05);
  cursor: pointer;
  font: 400 9px var(--mono);
  transition: 180ms ease;
}

.prompt-chips button:hover {
  color: var(--ink);
  background: var(--acid);
}

.chat-form {
  position: relative;
  margin: 0 20px;
}

.chat-form input {
  width: 100%;
  height: 58px;
  padding: 0 66px 0 18px;
  outline: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 13px;
  color: white;
  background: rgba(0, 0, 0, 0.25);
  font-size: 12px;
}

.chat-form input:focus {
  border-color: var(--acid);
  box-shadow: 0 0 0 3px rgba(185, 255, 93, 0.08);
}

.chat-form input::placeholder {
  color: #77827d;
}

.chat-form button {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 9px;
  color: var(--ink);
  background: var(--acid);
  cursor: pointer;
}

.chat-form svg {
  width: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.chat-disclaimer {
  padding: 10px 20px 15px;
  color: #68736e;
  text-align: center;
  font: 400 8px var(--mono);
}

/* ==========================================================================
   Responsive behavior
   ========================================================================== */

@media (max-width: 720px) {
  .single-content {
    width: min(100% - 24px, 620px);
    padding-top: 18px;
    padding-bottom: 10px;
    gap: 10px;
  }

  .single-heading h1 {
    padding: 0 38px;
    font-size: clamp(15px, 4.5vw, 19px);
  }

  .welcome-line {
    margin-bottom: 5px;
    font-size: clamp(27px, 8vw, 36px);
  }

  .lang-toggle {
    top: 12px;
    right: 12px;
  }

  .chat-shell {
    border-radius: 15px;
  }

  .chat-log {
    padding: 14px 13px 8px;
    overscroll-behavior: contain;
  }

  .prompt-chips {
    padding: 2px 13px 8px;
  }

  .chat-form {
    margin: 0 13px;
  }

  .chat-form input {
    height: 50px;
    font-size: 16px;
  }

  .chat-form button {
    top: 6px;
    right: 6px;
    width: 38px;
    height: 38px;
  }

  .chat-disclaimer {
    padding: 7px 13px 9px;
  }
}

@media (max-width: 520px) {
  .single-content {
    width: 100%;
    padding: max(14px, env(safe-area-inset-top)) 0 max(6px, env(safe-area-inset-bottom));
    gap: 7px;
  }

  .single-heading {
    padding: 0 48px 2px;
  }

  .single-heading h1 {
    padding: 0;
    font-size: 15px;
  }

  .welcome-line {
    font-size: clamp(25px, 8vw, 32px);
  }

  .chat-shell {
    border-right: 0;
    border-left: 0;
    border-radius: 18px;
  }

  .message {
    max-width: 96%;
  }

  .message p {
    font-size: 13px;
    line-height: 1.58;
  }

  .prompt-chips {
    scrollbar-width: none;
  }

  .prompt-chips::-webkit-scrollbar {
    display: none;
  }

  .single-signature {
    height: 26px;
  }
}

@media (max-height: 700px) {
  .single-content {
    padding-top: 12px;
    padding-bottom: 8px;
    gap: 8px;
  }

  .single-heading h1 {
    font-size: clamp(15px, 2vw, 19px);
  }

  .welcome-line {
    font-size: clamp(25px, 3.5vw, 36px);
  }

  .single-signature {
    height: 30px;
  }
}

/* Respect the operating system accessibility preference. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}