:root {
  --bg: #050807;
  --panel: rgba(8, 15, 12, 0.88);
  --green: #b8ff39;
  --green-soft: #76b929;
  --cyan: #53ffd8;
  --text: #f2f5ed;
  --muted: #98a29a;
  --line: rgba(184, 255, 57, 0.22);
  --danger: #ff5263;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 70% 18%, rgba(46, 112, 41, 0.18), transparent 27rem),
    linear-gradient(rgba(184, 255, 57, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 255, 57, 0.025) 1px, transparent 1px),
    var(--bg);
  background-size: auto, 48px 48px, 48px 48px, auto;
  font-family: "IBM Plex Mono", monospace;
}

body::before {
  position: fixed;
  z-index: 5;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(transparent 50%, rgba(0, 0, 0, 0.12) 50%);
  background-size: 100% 4px;
}

#matrix {
  position: fixed;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.13;
}

.noise {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' 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");
}

a {
  color: inherit;
}

.topbar,
main,
footer {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--bg);
  background: var(--green);
  font-weight: 700;
  letter-spacing: -0.12em;
}

.system-status {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--green);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
  animation: pulse 1.8s infinite;
}

main {
  padding: 90px 0 36px;
}

.hero {
  position: relative;
}

.hero::after {
  position: absolute;
  top: -50px;
  right: 1%;
  z-index: -1;
  color: rgba(184, 255, 57, 0.035);
  content: "01";
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(11rem, 31vw, 29rem);
  font-weight: 700;
  line-height: 0.8;
}

.eyebrow {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
}

.eyebrow span {
  padding: 4px 7px;
  color: var(--bg);
  background: var(--green);
  font-weight: 600;
}

h1,
h2,
.manifesto {
  font-family: "Space Grotesk", sans-serif;
}

h1 {
  max-width: 960px;
  margin: 0;
  font-size: clamp(4.1rem, 12.2vw, 10.5rem);
  line-height: 0.76;
  letter-spacing: -0.075em;
}

h1 span {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--green);
  text-shadow: 0 0 28px rgba(184, 255, 57, 0.12);
}

h1 .cursor {
  display: inline-block;
  margin-left: 0.03em;
  color: var(--green);
  -webkit-text-stroke: 0;
  animation: blink 1s steps(1) infinite;
}

.intro {
  max-width: 640px;
  margin: 46px 0 50px;
  color: #cbd1ca;
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.8;
}

.intro strong {
  color: var(--green);
  font-weight: 500;
}

.invite-line {
  display: block;
  margin-top: 12px;
  color: var(--text);
}

.event-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.data-card {
  position: relative;
  display: flex;
  min-height: 120px;
  flex-direction: column;
  justify-content: center;
  padding: 20px 28px;
  border-right: 1px solid var(--line);
  background: rgba(5, 8, 7, 0.58);
}

.data-card:last-child {
  border-right: 0;
}

.data-label {
  margin-bottom: 12px;
  color: var(--green-soft);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
}

.data-card strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
}

.locked-card strong {
  padding-right: 44px;
  color: var(--muted);
  font-size: clamp(0.82rem, 2.2vw, 1.3rem);
  letter-spacing: 0.1em;
}

.lock-icon {
  position: absolute;
  right: 26px;
  color: var(--green);
  font-size: 2rem;
}

.dress-code {
  display: flex;
  min-height: 72px;
  align-items: center;
  gap: 22px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(184, 255, 57, 0.025);
}

.dress-code .data-label {
  margin: 0;
}

.dress-code strong {
  color: var(--green);
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.06em;
}

.challenge {
  margin-top: 100px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 35px 100px rgba(0, 0, 0, 0.45), inset 0 0 50px rgba(184, 255, 57, 0.015);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  background: rgba(184, 255, 57, 0.035);
  font-size: 0.68rem;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #334038;
}

.terminal-dots span:first-child {
  background: var(--danger);
}

.secure-label {
  margin-left: auto;
  color: var(--green-soft);
}

.terminal-body {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 72px;
  padding: clamp(34px, 6vw, 72px);
}

.terminal-body > *,
.challenge-copy,
.access-panel,
.hint {
  min-width: 0;
  max-width: 100%;
}

.command {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 0.8rem;
}

.command span {
  color: var(--green);
}

.challenge-copy h2 {
  margin: 0 0 26px;
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.challenge-copy > p:not(.command) {
  max-width: 570px;
  color: var(--muted);
  line-height: 1.7;
}

.hint {
  margin-top: 30px;
  padding: 20px;
  border: 1px solid var(--line);
  background: rgba(184, 255, 57, 0.025);
  font-size: 0.76rem;
}

.hint-heading {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--green);
  font-weight: 600;
  letter-spacing: 0.1em;
}

.hint > p {
  margin: 13px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.hint-countdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 18px;
  background: var(--line);
}

.hint-countdown span {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 12px 6px;
  background: #070c09;
  text-align: center;
}

.hint-countdown strong {
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem;
}

.hint-countdown small {
  margin-top: 3px;
  color: var(--green-soft);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
}

.hint-unlocked {
  border-color: var(--green);
  box-shadow: 0 0 22px rgba(184, 255, 57, 0.06);
}

.hint-copy kbd {
  display: inline-block;
  margin: 5px 2px;
  padding: 3px 7px;
  border: 1px solid #536259;
  border-bottom-width: 2px;
  color: var(--text);
  background: #0d1510;
  font: 600 0.72rem "IBM Plex Mono", monospace;
}

.mobile-source-button {
  width: 100%;
  justify-content: space-between;
  margin-top: 15px;
  padding: 12px 14px;
  border: 1px solid var(--green-soft);
  color: var(--green);
  background: transparent;
  cursor: pointer;
  font: 600 0.67rem "IBM Plex Mono", monospace;
  letter-spacing: 0.06em;
}

.mobile-source-button:not([hidden]) {
  display: flex;
}

.mobile-source-button:hover {
  color: var(--bg);
  background: var(--green);
}

.mobile-source-output {
  overflow-x: auto;
  margin: 14px 0 0;
  padding: 14px;
  border-left: 2px solid var(--green);
  color: var(--green);
  background: #020403;
  font: 0.66rem/1.65 "IBM Plex Mono", monospace;
  white-space: pre-wrap;
}

.access-panel {
  align-self: center;
  padding: 24px;
  border: 1px solid var(--line);
  background: #050a07;
}

.access-panel label {
  display: block;
  margin-bottom: 10px;
  color: var(--green-soft);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
}

.input-wrap {
  display: flex;
  align-items: center;
  border: 1px solid #3a4b3e;
  background: #030504;
}

.input-wrap:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(184, 255, 57, 0.07);
}

.input-wrap > span {
  padding-left: 15px;
  color: var(--green);
}

input {
  min-width: 0;
  flex: 1;
  padding: 16px 12px;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
  font: inherit;
}

input::placeholder {
  color: #556058;
}

.reveal-button {
  align-self: stretch;
  padding: 0 12px;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: 0.65rem "IBM Plex Mono", monospace;
}

.submit-button,
.maps-button {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding: 16px 18px;
  border: 1px solid var(--green);
  color: var(--bg);
  background: var(--green);
  cursor: pointer;
  font: 600 0.78rem "IBM Plex Mono", monospace;
  letter-spacing: 0.07em;
  transition: 160ms ease;
}

.submit-button:hover,
.maps-button:hover {
  color: var(--green);
  background: transparent;
  box-shadow: 0 0 25px rgba(184, 255, 57, 0.15);
}

.feedback {
  min-height: 18px;
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 0.68rem;
}

.feedback.error {
  color: var(--danger);
}

.feedback.success {
  color: var(--green);
}

.loading-dots {
  animation: blink 1.2s steps(1) infinite;
}

.shake {
  animation: shake 300ms linear;
}

.manifesto {
  margin: 105px 0;
  text-align: center;
  font-size: clamp(1.6rem, 4.6vw, 4.4rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.manifesto p {
  margin: 0;
}

.manifesto p:last-child {
  color: transparent;
  -webkit-text-stroke: 1px var(--green);
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 24px 0 32px;
  border-top: 1px solid var(--line);
  color: #657068;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.success-dialog {
  width: min(520px, calc(100% - 32px));
  padding: 48px;
  border: 1px solid var(--green);
  color: var(--text);
  background: #080e0a;
  text-align: center;
  box-shadow: 0 0 80px rgba(184, 255, 57, 0.2);
}

.success-dialog::backdrop {
  background: rgba(0, 0, 0, 0.84);
  backdrop-filter: blur(7px);
}

.success-icon {
  display: grid;
  width: 56px;
  height: 56px;
  margin: 0 auto 22px;
  place-items: center;
  border: 1px solid var(--green);
  border-radius: 50%;
  color: var(--green);
  font-size: 1.8rem;
  box-shadow: 0 0 30px rgba(184, 255, 57, 0.2);
}

.success-kicker {
  color: var(--green);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
}

.success-dialog h2 {
  margin: 10px 0 18px;
  font-size: clamp(2.2rem, 8vw, 4rem);
  line-height: 0.9;
}

.success-dialog > p:not(.success-kicker) {
  color: var(--muted);
  line-height: 1.6;
}

.maps-button {
  margin-top: 30px;
  text-decoration: none;
}

.close-dialog {
  margin-top: 22px;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: 0.7rem "IBM Plex Mono", monospace;
}

.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;
}

@keyframes pulse {
  50% { opacity: 0.4; }
}

@keyframes blink {
  50% { opacity: 0; }
}

@keyframes shake {
  25% { transform: translateX(-7px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-3px); }
}

@media (max-width: 780px) {
  .topbar,
  main,
  footer {
    width: min(100% - 24px, 1180px);
  }

  main {
    padding-top: 62px;
  }

  h1 {
    font-size: clamp(3.4rem, 18vw, 7rem);
  }

  .event-grid,
  .terminal-body {
    grid-template-columns: 1fr;
  }

  .data-card {
    min-height: 96px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .data-card:last-child {
    border-bottom: 0;
  }

  .dress-code {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
    padding: 20px 28px;
  }

  .challenge {
    margin-top: 72px;
  }

  .terminal-body {
    gap: 40px;
  }

  .secure-label {
    display: none;
  }

  .manifesto {
    margin: 76px 0;
  }

  footer {
    flex-direction: column;
    gap: 9px;
  }

  .success-dialog {
    padding: 36px 22px;
  }
}

@media (max-width: 520px) {
  .status-text {
    font-size: 0;
  }

  .status-text::after {
    content: "ONLINE";
    font-size: 0.68rem;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.7rem);
    letter-spacing: -0.065em;
  }

  .intro {
    margin-top: 38px;
    font-size: 0.92rem;
  }

  .locked-card strong {
    font-size: 0.76rem;
  }

  .hint {
    width: 100%;
    padding: 15px;
  }

  .terminal-body {
    gap: 32px;
    padding: 30px 18px;
  }

  .access-panel {
    width: 100%;
    padding: 18px 15px;
  }

  .hint-countdown strong {
    font-size: 1.1rem;
  }

  .hint-countdown small {
    font-size: 0.48rem;
    letter-spacing: 0.06em;
  }

  .input-wrap,
  .submit-button {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  #matrix {
    display: none;
  }
}