@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
  --bg: #050505;
  --bg-deep: #010101;
  --panel: rgba(12, 12, 12, 0.9);
  --panel-soft: rgba(10, 10, 10, 0.88);
  --panel-strong: rgba(18, 18, 18, 0.94);
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.34);
  --text: #f1f1f1;
  --muted: #a7a7a7;
  --accent: #f4f4f4;
  --accent-2: #cfcfcf;
  --accent-3: #ffffff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --max: 76rem;
  --radius: 1.4rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  line-height: 1.65;
  background:
    radial-gradient(circle at 14% 10%, rgba(255, 255, 255, 0.09), transparent 24rem),
    radial-gradient(circle at 84% 16%, rgba(255, 255, 255, 0.05), transparent 22rem),
    linear-gradient(180deg, #111111 0%, var(--bg) 42%, var(--bg-deep) 100%);
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent);
}

body::after {
  background:
    linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.04) 45%, transparent 58%),
    linear-gradient(0deg, rgba(8, 8, 8, 0.12), rgba(8, 8, 8, 0.12));
  opacity: 0.7;
  animation: sweep 14s linear infinite;
  transform: translateX(-30%);
}

@keyframes sweep {
  from {
    transform: translateX(-30%);
  }
  to {
    transform: translateX(30%);
  }
}

a {
  color: inherit;
}

.shell-rain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.38;
}

.shell-rain__track {
  position: absolute;
  left: -12%;
  right: -12%;
  display: flex;
  gap: 2rem;
  white-space: nowrap;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.11);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
}

.shell-rain__track span {
  flex: none;
}

.shell-rain__track--one {
  top: 14%;
  animation: drift-left 40s linear infinite;
}

.shell-rain__track--two {
  top: 39%;
  color: rgba(255, 255, 255, 0.08);
  animation: drift-right 34s linear infinite;
}

.shell-rain__track--three {
  top: 67%;
  color: rgba(255, 255, 255, 0.07);
  animation: drift-left 46s linear infinite;
}

@keyframes drift-left {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-24%);
  }
}

@keyframes drift-right {
  from {
    transform: translateX(-18%);
  }
  to {
    transform: translateX(0);
  }
}

.page {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
  padding: 1.5rem 0 4rem;
}

.masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand {
  display: grid;
  gap: 0.35rem;
}

.brand-link {
  display: inline-grid;
  gap: 0.35rem;
  color: inherit;
  text-decoration: none;
}

.brand-link:hover,
.brand-link:focus-visible {
  color: var(--text);
}

.masthead__title {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.masthead__subtitle {
  margin: 0;
  max-width: 34rem;
  color: var(--muted);
  font-size: 0.95rem;
  text-align: right;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 1rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.6rem 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  text-decoration: none;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

main {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(18, 18, 18, 0.94), rgba(7, 7, 7, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.045), transparent 38%, transparent 62%, rgba(255, 255, 255, 0.035));
  pointer-events: none;
}

section {
  padding: 2rem;
}

.hero {
  padding: 3rem;
}

.hero__topline,
.section-tag,
.stat__label,
.card__eyebrow {
  margin-top: 0;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-family: "IBM Plex Mono", monospace;
}

.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(16rem, 0.75fr);
  gap: 2rem;
  align-items: start;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  text-wrap: balance;
}

h1 {
  margin-top: 0.45rem;
  max-width: 11ch;
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
}

h2 {
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

p {
  margin: 0.95rem 0 0;
}

.lede {
  color: #dddddd;
}

.hero__copy {
  max-width: 42rem;
  margin: 1.4rem 0 0;
  font-size: 1.08rem;
  color: #dddddd;
}

.hero__actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.button,
.button--secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.button {
  color: #050505;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04), 0 10px 30px rgba(255, 255, 255, 0.12);
}

.button--secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.button:hover,
.button:focus-visible,
.button--secondary:hover,
.button--secondary:focus-visible {
  transform: translateY(-1px);
  border-color: var(--line-strong);
}

.hero__stats,
.stack {
  display: grid;
  gap: 0.9rem;
}

.stat,
.mini-card {
  padding: 1.1rem 1.15rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1rem;
  background: rgba(15, 15, 15, 0.76);
}

.stat strong {
  display: block;
  margin-top: 0.35rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.9rem;
  line-height: 1;
  color: white;
}

.stat p,
.mini-card p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.grid,
.three-up {
  display: grid;
  gap: 1.5rem;
}

.grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-list,
.study-list,
.calendar-list {
  list-style: none;
  padding: 0;
  margin: 1.35rem 0 0;
  display: grid;
  gap: 0.95rem;
}

.feature-list li,
.study-list li,
.calendar-list li {
  padding-top: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.feature-list li:first-child,
.study-list li:first-child,
.calendar-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.feature-list strong,
.study-list strong,
.calendar-list strong {
  display: block;
  margin-bottom: 0.2rem;
  color: white;
}

.study-panel {
  background: linear-gradient(180deg, rgba(18, 18, 18, 0.97), rgba(7, 7, 7, 0.95));
}

.quote {
  padding: 1.3rem 1.35rem;
  border-left: 3px solid var(--accent);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.05);
  color: #e3e3e3;
}

.quote p:first-child {
  margin-top: 0;
}

.callout {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.25rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.callout:hover,
.callout:focus-visible {
  color: var(--accent-2);
}

.calendar {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.25rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1rem;
  background: rgba(10, 10, 10, 0.82);
}

.calendar th,
.calendar td {
  padding: 0.95rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  vertical-align: top;
}

.calendar th {
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  background: rgba(255, 255, 255, 0.05);
  font-family: "IBM Plex Mono", monospace;
}

.calendar tr:last-child td {
  border-bottom: 0;
}

.calendar td span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.page-intro {
  max-width: 48rem;
}

.footer {
  margin-top: 1.5rem;
  padding: 1.25rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--muted);
  font-size: 0.95rem;
}

.chat-panel {
  padding: 2rem;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}

.chat-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.chatlog {
  display: grid;
  gap: 1rem;
  min-height: 24rem;
  max-height: 58vh;
  overflow-y: auto;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1rem;
  background: rgba(10, 10, 10, 0.84);
}

.message {
  max-width: min(48rem, 100%);
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1rem;
  background: var(--panel-soft);
}

.message--user {
  margin-left: auto;
  background: rgba(22, 22, 22, 0.92);
  border-color: rgba(255, 255, 255, 0.18);
}

.message--assistant {
  background: rgba(14, 14, 14, 0.9);
}

.message--system {
  color: var(--muted);
  background: rgba(8, 8, 8, 0.94);
}

.message__label {
  margin: 0 0 0.45rem;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  font-family: "IBM Plex Mono", monospace;
}

.message__body {
  white-space: pre-wrap;
  word-break: break-word;
}

.sources {
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.sources__title {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.sources ul {
  margin: 0;
  padding-left: 1.2rem;
}

.sources li + li {
  margin-top: 0.35rem;
}

.sources a {
  color: var(--accent);
  text-decoration-color: rgba(255, 255, 255, 0.35);
  text-underline-offset: 0.15em;
}

.sources a:hover,
.sources a:focus-visible {
  text-decoration-color: rgba(255, 255, 255, 0.7);
}

.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.9rem;
  margin-top: 1rem;
}

.composer textarea {
  width: 100%;
  min-height: 4.2rem;
  max-height: 12rem;
  resize: vertical;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 1rem;
  background: rgba(8, 8, 8, 0.92);
  color: var(--text);
  font: inherit;
  outline: none;
}

.composer textarea:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.chatbtn {
  align-self: end;
  min-width: 8rem;
  padding: 0.95rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #050505;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}

.terminal-line {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.terminal-line::before {
  content: ">";
  color: var(--accent-2);
}

.chatbtn:hover:not(:disabled),
.chatbtn:focus-visible:not(:disabled) {
  transform: translateY(-1px);
}

.chatbtn:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

@media (max-width: 960px) {
  .hero__layout,
  .grid,
  .three-up {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .page {
    width: min(calc(100% - 1.25rem), var(--max));
    padding-top: 1.1rem;
  }

  .masthead {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 1.3rem;
  }

  .masthead__subtitle {
    text-align: left;
  }

  .hero,
  section,
  .chat-panel {
    padding: 1.5rem;
  }

  h1 {
    max-width: none;
    font-size: clamp(2.5rem, 14vw, 4rem);
  }

  .hero__actions,
  .button-row,
  .composer {
    flex-direction: column;
    grid-template-columns: 1fr;
  }

  .button,
  .button--secondary,
  .chatbtn {
    width: 100%;
  }

  .chat-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .chatlog {
    min-height: 20rem;
    max-height: none;
  }

  .calendar {
    display: block;
    overflow-x: auto;
  }
}