/* SmartSecureFiles — design tokens
   Concept: a bank vault's materials — brushed steel, brass fittings,
   ledger paper — rendered for a file-transfer product. */

:root {
  --ink:        #1B1F27;   /* deep steel-charcoal background */
  --ink-2:      #242A35;   /* panel surface, one step lighter */
  --ink-3:      #2E3542;   /* card / input surface */
  --paper:      #F3EEE2;   /* warm ledger paper for light text */
  --paper-dim:  #C9C3B4;   /* muted paper for secondary text */
  --brass:      #C9A24B;   /* primary accent — vault brass */
  --brass-dim:  #8B7233;   /* recessed brass / borders */
  --brass-glow: rgba(201, 162, 75, 0.35);
  --steel:      #8890A0;   /* muted steel for captions */
  --ok:         #6E9C7B;   /* quiet vault-green for success */
  --err:        #C97B6B;   /* muted clay-red for errors */

  --serif: "Spectral", Georgia, serif;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

* { box-sizing: border-box; }

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

body {
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 78% 8%, rgba(201, 162, 75, 0.06), transparent 45%),
    linear-gradient(180deg, var(--ink) 0%, #171B22 100%);
}

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

::selection { background: var(--brass-glow); color: var(--paper); }

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

/* ---------- layout shell ---------- */

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

.site-header {
  padding: 28px 0 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  text-decoration: none;
}

.brand-mark {
  width: 22px;
  height: 22px;
  flex: none;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(201, 162, 75, 0.18);
  padding-bottom: 22px;
}

.cipher-tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--steel);
  letter-spacing: 0.08em;
  white-space: nowrap;
  overflow: hidden;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 88px 0 96px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass);
  margin: 0 0 20px;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  margin: 0 0 22px;
  color: var(--paper);
  max-width: 12ch;
}

.hero h1 em {
  font-style: italic;
  color: var(--brass);
}

.hero p.lede {
  font-size: 17px;
  line-height: 1.65;
  color: var(--paper-dim);
  max-width: 46ch;
  margin: 0 0 36px;
}

/* ---------- the form / "slot" ---------- */

.signup {
  max-width: 480px;
}

.signup-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.email-slot {
  position: relative;
  flex: 1;
}

.email-slot input[type="email"] {
  width: 100%;
  height: 52px;
  background: var(--ink-3);
  border: 1px solid rgba(201, 162, 75, 0.28);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  padding: 0 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.email-slot input[type="email"]::placeholder { color: var(--steel); }

.email-slot input[type="email"]:focus {
  border-color: var(--brass);
  box-shadow: 0 0 0 3px var(--brass-glow);
  outline: none;
}

.signup button {
  height: 52px;
  padding: 0 24px;
  background: var(--brass);
  color: #22190C;
  border: none;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, transform 0.1s ease;
}

.signup button:hover { background: #D9B463; }
.signup button:active { transform: translateY(1px); }
.signup button:disabled { opacity: 0.6; cursor: default; }

.signup-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--steel);
}

.signup-status {
  margin-top: 14px;
  font-size: 14px;
  min-height: 20px;
}

.signup-status[data-state="ok"] { color: var(--ok); }
.signup-status[data-state="err"] { color: var(--err); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.email-slot input[type="email"]:disabled {
  opacity: 0.7;
}

/* visually-hidden honeypot */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- vault dial (signature element) ---------- */

.dial-stage {
  display: flex;
  align-items: center;
  justify-content: center;
}

.dial {
  width: min(320px, 90%);
  height: auto;
  animation: dial-drift 40s linear infinite;
  transform-origin: 160px 160px;
}

.dial.sealed {
  animation: none;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes dial-drift {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ---------- ledger feature list ---------- */

.ledger {
  border-top: 1px solid rgba(201, 162, 75, 0.18);
  padding: 56px 0 64px;
}

.ledger-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.ledger-item {
  padding: 4px 28px;
  border-left: 1px solid rgba(201, 162, 75, 0.18);
}

.ledger-item:first-child { border-left: none; padding-left: 0; }

.ledger-item h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--paper);
}

.ledger-item p {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper-dim);
  margin: 0;
}

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

.site-footer {
  border-top: 1px solid rgba(201, 162, 75, 0.18);
  padding: 28px 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--steel);
}

.site-footer .brand-mark { width: 16px; height: 16px; opacity: 0.6; }

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

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 56px 0 64px;
    gap: 40px;
  }
  .dial-stage { order: -1; }
  .dial { width: 200px; }
  .ledger-grid { grid-template-columns: 1fr; gap: 28px; }
  .ledger-item { border-left: none; padding-left: 0; }
  .signup-row { flex-direction: column; }
  .signup button { height: 48px; }
  .cipher-tag { display: none; }
}

/* ---------- verify page ---------- */

.verify-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.verify-card {
  max-width: 440px;
  padding: 40px;
  border: 1px solid rgba(201, 162, 75, 0.25);
  border-radius: var(--radius);
  background: var(--ink-2);
  text-align: center;
}

.verify-card h1 {
  font-family: var(--serif);
  font-size: 28px;
  margin: 0 0 14px;
}

.verify-card p {
  color: var(--paper-dim);
  line-height: 1.6;
}

.verify-note { font-size: 13px; color: var(--steel); }

.verify-back {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}