:root {
  color-scheme: light;
  --ink: #15171b;
  --muted: #5b616d;
  --line: rgba(21, 23, 27, 0.16);
  --paper: rgba(255, 255, 255, 0.86);
  --paper-strong: rgba(255, 255, 255, 0.96);
  --teal: #087f83;
  --teal-dark: #075f63;
  --coral: #d95f43;
  --gold: #b9841b;
  --shadow: 0 28px 80px rgba(31, 40, 50, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(244, 248, 247, 0.92), rgba(246, 240, 230, 0.88)),
    #f7f8f4;
  overflow-x: hidden;
}

button,
input,
textarea {
  font: inherit;
}

#signal-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.page-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 440px);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(36px, 6vw, 80px) 0;
}

.intro {
  max-width: 690px;
}

.kicker {
  margin: 0 0 18px;
  color: var(--teal-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(3.6rem, 9vw, 7.7rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.statement {
  margin: clamp(24px, 4vw, 36px) 0 0;
  max-width: 650px;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  font-weight: 700;
  line-height: 1.22;
}

.statement span {
  display: block;
}

.access-line {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.6;
}

.linkedin-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 30px;
  padding: 0 18px;
  border: 1px solid rgba(8, 127, 131, 0.32);
  border-radius: 999px;
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.64);
  text-decoration: none;
  font-weight: 800;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    transform 160ms ease;
}

.linkedin-link:hover,
.linkedin-link:focus-visible {
  border-color: rgba(8, 127, 131, 0.72);
  background: rgba(255, 255, 255, 0.94);
  transform: translateY(-1px);
}

.signup-panel {
  width: 100%;
  padding: clamp(24px, 3.4vw, 34px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

form {
  display: grid;
  gap: 18px;
}

.field-group {
  display: grid;
  gap: 8px;
}

label {
  color: #343941;
  font-size: 0.86rem;
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--paper-strong);
  outline: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease;
}

input {
  height: 48px;
  padding: 0 14px;
}

textarea {
  min-height: 132px;
  resize: vertical;
  padding: 13px 14px;
  line-height: 1.5;
}

input::placeholder,
textarea::placeholder {
  color: #8a9099;
}

input:focus,
textarea:focus {
  border-color: rgba(8, 127, 131, 0.76);
  box-shadow: 0 0 0 4px rgba(8, 127, 131, 0.12);
}

.has-error input,
.has-error textarea {
  border-color: rgba(217, 95, 67, 0.86);
}

.error-message,
.form-status {
  min-height: 18px;
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.35;
}

.error-message {
  color: var(--coral);
}

.form-status {
  color: var(--muted);
}

.form-status.success {
  color: var(--teal-dark);
  font-weight: 700;
}

.form-status.error {
  color: var(--coral);
  font-weight: 700;
}

.submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  width: 100%;
  border: 0;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--teal), var(--gold));
  font-weight: 800;
  cursor: pointer;
  transition:
    filter 160ms ease,
    transform 160ms ease;
}

.submit-button:hover,
.submit-button:focus-visible {
  filter: saturate(1.08) contrast(1.04);
  transform: translateY(-1px);
}

.submit-button:disabled {
  cursor: wait;
  filter: grayscale(0.2);
  opacity: 0.72;
  transform: none;
}

@media (max-width: 820px) {
  .page-shell {
    grid-template-columns: 1fr;
    align-items: start;
    width: min(100% - 32px, 620px);
  }

  h1 {
    max-width: 10ch;
    font-size: clamp(3.15rem, 16vw, 5.4rem);
  }
}

@media (max-width: 440px) {
  .page-shell {
    width: min(100% - 24px, 620px);
    padding: 28px 0;
  }

  .statement {
    font-size: 1.14rem;
  }

  .signup-panel {
    padding: 20px;
  }
}