/* ==========================================================================
   PIN LOCK SCREEN — premium gatekeeper, shown before the site is revealed.
   Self-contained: doesn't touch any existing layout, only overlays it.
   ========================================================================== */

.pin-lock {
  position: fixed;
  inset: 0;
  z-index: var(--z-pin);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  background:
    radial-gradient(ellipse 70% 55% at 50% 8%, rgba(62, 198, 224, 0.16), transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 90%, rgba(255, 215, 106, 0.08), transparent 65%),
    linear-gradient(180deg, var(--c-surface) 0%, var(--c-mid) 45%, var(--c-deep) 75%, var(--c-abyss) 100%);
  overflow: hidden;
  transition: opacity 0.8s var(--ease-soft), filter 0.8s var(--ease-soft);
}

.pin-lock.is-unlocked {
  opacity: 0;
  filter: blur(14px);
  pointer-events: none;
}

/* ---- Ambient atmosphere: glows + rising bubbles, scoped to this screen ---- */
.pin-lock__atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.pin-lock__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}

.pin-lock__glow--1 {
  width: 46vw; height: 46vw; max-width: 520px; max-height: 520px;
  top: -10%; left: -8%;
  background: radial-gradient(circle, rgba(62, 198, 224, 0.3), transparent 70%);
  animation: pinGlowDrift 18s var(--ease-in-out) infinite;
}

.pin-lock__glow--2 {
  width: 38vw; height: 38vw; max-width: 440px; max-height: 440px;
  bottom: -12%; right: -6%;
  background: radial-gradient(circle, rgba(255, 215, 106, 0.18), transparent 70%);
  animation: pinGlowDrift 22s var(--ease-in-out) infinite reverse;
}

@keyframes pinGlowDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(3vw, 2vh) scale(1.08); }
}

.pin-lock__bubble {
  position: absolute;
  bottom: -10%;
  left: var(--x, 50%);
  width: var(--sz, 6px);
  height: var(--sz, 6px);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,0.85), rgba(143,227,240,0.25) 70%, transparent 100%);
  box-shadow: 0 0 6px rgba(143, 227, 240, 0.4);
  animation: pinBubbleRise var(--sp, 10s) linear infinite;
  animation-delay: var(--dl, 0s);
  opacity: 0;
}

@keyframes pinBubbleRise {
  0%   { transform: translateY(0) translateX(0); opacity: 0; }
  8%   { opacity: 0.7; }
  92%  { opacity: 0.5; }
  100% { transform: translateY(-118vh) translateX(14px); opacity: 0; }
}

/* ---- Card ---- */
.pin-lock__card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-6) var(--sp-5) var(--sp-5);
  border-radius: var(--radius-lg);
  background: var(--c-panel-strong);
  border: 1px solid var(--c-panel-border);
  backdrop-filter: var(--panel-blur);
  -webkit-backdrop-filter: var(--panel-blur);
  box-shadow: var(--shadow-panel), var(--shadow-glow-cyan);
  animation: pinCardIn 0.9s var(--ease-out) both;
}

@keyframes pinCardIn {
  from { opacity: 0; transform: translateY(22px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.pin-lock__mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-bio-cyan);
  background: rgba(62, 198, 224, 0.1);
  border: 1px solid var(--c-panel-border);
  filter: drop-shadow(0 0 18px rgba(62, 198, 224, 0.4));
  margin-bottom: var(--sp-3);
  animation: pinMarkFloat 3.4s var(--ease-in-out) infinite;
}
.pin-lock__mark svg { width: 26px; height: 26px; }

@keyframes pinMarkFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.pin-lock__eyebrow { margin-bottom: var(--sp-2); }

.pin-lock__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  font-weight: 600;
  color: var(--c-foam);
  letter-spacing: -0.01em;
  line-height: var(--lh-tight);
}

.pin-lock__subtitle {
  margin-top: var(--sp-2);
  margin-bottom: var(--sp-5);
  font-size: var(--fs-body);
  color: var(--c-foam-dim);
  line-height: var(--lh-relaxed);
  max-width: 30ch;
}

.pin-lock__form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  width: 100%;
}

/* ---- Digit boxes ---- */
.pin-lock__digits {
  position: relative;
  display: flex;
  justify-content: center;
  gap: clamp(8px, 2.4vw, 14px);
}

.pin-digit {
  width: clamp(40px, 11vw, 52px);
  height: clamp(46px, 12.5vw, 58px);
  border-radius: var(--radius-sm);
  background: rgba(244, 249, 255, 0.04);
  border: 1.5px solid var(--c-line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.pin-digit__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-bio-cyan);
  box-shadow: 0 0 10px rgba(62, 198, 224, 0.7);
  transform: scale(0);
  transition: transform 0.25s var(--ease-out);
}

.pin-digit.is-filled .pin-digit__dot { transform: scale(1); }

.pin-digit.is-active {
  border-color: var(--c-panel-border-hover);
  box-shadow: 0 0 0 3px rgba(62, 198, 224, 0.14), var(--shadow-glow-cyan);
  background: rgba(62, 198, 224, 0.06);
}

.pin-lock__hidden-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  border: none;
  outline: none;
  background: transparent;
  color: transparent;
  caret-color: transparent;
  font-size: 16px; /* prevents iOS auto-zoom on focus */
  z-index: 2;
  cursor: default;
}

/* Error state — shake + red glow pulse */
.pin-lock__card.is-error {
  animation: pinShake 0.5s var(--ease-in-out);
}

@keyframes pinShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(4px); }
}

.pin-lock__card.is-error {
  border-color: rgba(255, 110, 95, 0.55);
  box-shadow: var(--shadow-panel), 0 0 46px rgba(255, 90, 75, 0.4);
}

.pin-lock__card.is-error .pin-digit {
  border-color: rgba(255, 110, 95, 0.5);
  background: rgba(255, 90, 75, 0.06);
}

.pin-lock__card.is-error .pin-digit__dot {
  background: var(--c-coral);
  box-shadow: 0 0 10px rgba(255, 138, 122, 0.7);
}

/* Success state — soft cyan/gold glow, then the screen fades via .is-unlocked */
.pin-lock__card.is-success {
  border-color: rgba(143, 227, 240, 0.6);
  box-shadow: var(--shadow-panel), 0 0 60px rgba(255, 215, 106, 0.35), var(--shadow-glow-cyan-lg);
  animation: pinSuccessPulse 0.9s var(--ease-soft);
}

@keyframes pinSuccessPulse {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.025); }
  100% { transform: scale(1); }
}

.pin-lock__card.is-success .pin-digit {
  border-color: var(--c-bio-cyan);
}
.pin-lock__card.is-success .pin-digit__dot {
  background: linear-gradient(135deg, var(--c-bio-cyan), var(--c-bio-gold));
  box-shadow: 0 0 14px rgba(255, 215, 106, 0.7);
}

/* ---- Submit button (visual sibling of .cta-btn, sized for this card) ---- */
.pin-lock__submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--c-bio-cyan), #2a9fc0);
  color: var(--c-abyss);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow-glow-cyan), var(--shadow-card);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}
.pin-lock__submit:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-cyan-lg), var(--shadow-card-hover); }
.pin-lock__submit:active { transform: translateY(0); }
.pin-lock__submit svg { transition: transform 0.3s var(--ease-out); }
.pin-lock__submit:hover svg { transform: translateX(2px); }

/* ---- Error notification (no browser alerts — inline, elegant, accessible) ---- */
.pin-lock__error {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: var(--sp-3);
  margin-bottom: calc(-1 * var(--sp-2));
  padding: 0.55rem 0.95rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 90, 75, 0.12);
  border: 1px solid rgba(255, 110, 95, 0.35);
  color: #ffb3a8;
  font-size: 0.84rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}
.pin-lock__error.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.pin-lock__error svg { flex-shrink: 0; }

@media (max-width: 480px) {
  .pin-lock__card { padding: var(--sp-5) var(--sp-4) var(--sp-4); }
}

@media (prefers-reduced-motion: reduce) {
  .pin-lock,
  .pin-lock__card,
  .pin-lock__glow,
  .pin-lock__bubble,
  .pin-lock__mark {
    animation: none !important;
    transition: opacity 0.4s ease !important;
  }
  .pin-lock__card.is-error { transform: none; }
}