/* ─── Sign-Up Modal — pricing-CTA popup ──────────────────────────────────
 * Lives directly on the marketing site (no React) so pricing tier
 * buttons can pop the upgrade UI in-place instead of bouncing the user
 * to app.opusdesignr.com first. The actual signup completes on the app
 * domain — clicking Continue / Google inside this modal redirects to
 * /start?plan=X (with email prefilled when present) and the app's
 * SignUpDialog finishes the flow there.
 *
 * Design ported from Claude Design's Sign-Up Modal spec
 * (handoff bundle /h/R061... → signup.css), translated to the marketing
 * site's design tokens (--acid / --bg-* / --ink-* / --line-*).
 */

.signup-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none; /* JS toggles to flex when open */
  align-items: flex-end;
  justify-content: center;
  font-family: var(--font-body, "Inter", system-ui, sans-serif);
}
.signup-modal.is-open {
  display: flex;
  animation: signupBackdropFade 0.18s ease;
}
@media (min-width: 768px) {
  .signup-modal { align-items: center; }
}

.signup-modal__scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@keyframes signupBackdropFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes signupSheetUp {
  from { transform: translateY(80px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
@keyframes signupModalIn {
  from { transform: translateY(14px) scale(0.96); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

/* ── Mobile bottom sheet ─────────────────────────────────────────────── */
.signup-modal__sheet {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 520px;
  margin: 0;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: 24px 24px 0 0;
  box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  animation: signupSheetUp 0.28s cubic-bezier(0.25, 0.1, 0.25, 1);
}
@media (min-width: 768px) {
  .signup-modal__sheet { display: none; }
}

.signup-modal__handle {
  width: 36px;
  height: 4px;
  background: var(--line-3);
  border-radius: 2px;
  margin: 8px auto 0;
}

.signup-modal__close {
  position: absolute;
  top: 14px; right: 14px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 1px solid var(--line-1);
  color: var(--ink-3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
}
.signup-modal__close:hover {
  color: var(--ink-1);
  background: var(--bg-4);
}

.signup-modal__body {
  padding: 12px 20px max(20px, env(safe-area-inset-bottom));
}

.signup-modal__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  margin-bottom: 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.signup-modal__eyebrow .pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 8px var(--acid);
}

.signup-modal__h {
  margin: 0;
  font-family: var(--font-display, "Inter", sans-serif);
  font-size: 32px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--ink-1);
}
.signup-modal__h .accent { color: var(--acid); }

.signup-modal__sub {
  margin: 8px 0 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-2);
}

/* Reward strip — compact mobile version */
.signup-modal__reward {
  position: relative;
  display: flex;
  align-items: stretch;
  margin-bottom: 14px;
  padding: 12px 14px;
  background: linear-gradient(
    135deg,
    rgba(200, 252, 11, 0.16),
    rgba(200, 252, 11, 0.04)
  );
  border: 1px solid rgba(200, 252, 11, 0.3);
  border-radius: 14px;
  overflow: hidden;
}
.signup-modal__reward::before {
  content: "";
  position: absolute;
  top: -30px; right: -30px;
  width: 90px; height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 252, 11, 0.25), transparent 70%);
}
.signup-modal__reward-amt {
  position: relative;
  font-family: var(--font-display, "Inter", sans-serif);
  font-size: 38px;
  line-height: 0.9;
  font-weight: 800;
  color: var(--acid);
  letter-spacing: 0.02em;
}
.signup-modal__reward-body {
  position: relative;
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid rgba(200, 252, 11, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
}
.signup-modal__reward-l {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--acid);
  text-transform: uppercase;
}
.signup-modal__reward-d {
  margin-top: 2px;
  font-size: 12px;
  line-height: 1.3;
  color: var(--ink-1);
}

/* Buttons + form */
.signup-modal__google,
.signup-modal__apple {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px;
  border-radius: 14px;
  background: #ffffff;
  color: #1f1f1f;
  border: 0;
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 10px;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.signup-modal__google {
  border: 0;
  background: #ffffff;
  color: #1f1f1f;
}
.signup-modal__google:hover { background: #f5f5f5; }
.signup-modal__apple {
  background: #050505;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  margin-bottom: 12px;
}
.signup-modal__apple:hover {
  background: #151515;
  border-color: rgba(255, 255, 255, 0.36);
}
.signup-modal__google:active,
.signup-modal__apple:active {
  transform: translateY(1px);
}

.signup-modal__or {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink-3);
}
.signup-modal__or::before,
.signup-modal__or::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line-1);
}

.signup-modal__field {
  position: relative;
  margin-bottom: 12px;
}
.signup-modal__field label {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.signup-modal__field input {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--line-1);
  border-radius: 12px;
  padding: 13px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink-1);
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.15s, background 0.15s;
}
.signup-modal__field input::placeholder { color: var(--ink-4); }
.signup-modal__field input:focus {
  border-color: var(--acid);
  background: var(--bg-4);
}

.signup-modal__cta {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  margin-top: 4px;
  border-radius: 14px;
  background: var(--acid);
  color: var(--on-acid-1, #000);
  border: 0;
  font-family: inherit;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(200, 252, 11, 0.18);
}
.signup-modal__cta:hover { background: var(--acid-hover, #b6e800); }
.signup-modal__cta .arrow { font-size: 16px; }

.signup-modal__foot {
  margin-top: 14px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-2);
}
.signup-modal__foot a {
  color: var(--acid);
  font-weight: 600;
  text-decoration: none;
}

.signup-modal__trust {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink-3);
}
.signup-modal__trust .dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--ink-3);
}

/* ── Desktop two-column ──────────────────────────────────────────────── */
.signup-modal__card {
  display: none;
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 820px;
  margin: 16px;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: 20px;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  grid-template-columns: 360px 1fr;
  animation: signupModalIn 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
}
@media (min-width: 768px) {
  .signup-modal__card { display: grid; }
}

.signup-modal__close--desktop {
  position: absolute;
  top: 18px; right: 18px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(11, 12, 9, 0.6);
  border: 1px solid var(--line-1);
  color: var(--ink-3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 4;
}
.signup-modal__close--desktop:hover {
  color: var(--ink-1);
  background: var(--bg-4);
}

/* LEFT — value/reward panel */
.signup-modal__left {
  position: relative;
  padding: 32px 30px 30px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  border-right: 1px solid var(--line-1);
  overflow: hidden;
  background:
    radial-gradient(circle at 10% 100%, rgba(200, 252, 11, 0.18), transparent 55%),
    linear-gradient(165deg, #1f2014 0%, #14150f 100%);
}
.signup-modal__left::before {
  content: "";
  position: absolute;
  top: -100px; right: -100px;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 252, 11, 0.08), transparent 70%);
  pointer-events: none;
}

.signup-modal__h--desktop {
  margin: 0;
  font-family: var(--font-display, "Inter", sans-serif);
  font-size: 44px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--ink-1);
  position: relative;
}
.signup-modal__h--desktop .accent { color: var(--acid); }

.signup-modal__sub--desktop {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  position: relative;
}

/* Hero credit reward card (desktop) */
.signup-modal__credit {
  margin-top: auto;
  position: relative;
  background: rgba(11, 12, 9, 0.4);
  border: 1px solid rgba(200, 252, 11, 0.25);
  border-radius: 16px;
  padding: 18px 18px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
}
.signup-modal__credit-amt {
  font-family: var(--font-display, "Inter", sans-serif);
  font-size: 64px;
  line-height: 0.85;
  font-weight: 800;
  color: var(--acid);
  letter-spacing: 0.02em;
}
.signup-modal__credit-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.signup-modal__credit-l {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--acid);
  text-transform: uppercase;
}
.signup-modal__credit-d {
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink-1);
}
.signup-modal__credit-fine {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px dashed rgba(200, 252, 11, 0.2);
  display: flex;
  justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink-3);
}

/* RIGHT — form */
.signup-modal__right {
  padding: 32px 32px 28px;
  display: flex;
  flex-direction: column;
}
.signup-modal__form-h {
  margin: 0 0 4px;
  font-family: var(--font-display, "Inter", sans-serif);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--ink-1);
}
.signup-modal__form-sub {
  margin-bottom: 20px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.signup-modal__tos {
  margin-top: 14px;
  text-align: center;
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink-3);
}
.signup-modal__tos a {
  color: var(--acid);
  text-decoration: none;
}
.signup-modal__tos a:hover { text-decoration: underline; }