/* ============================================================
   AUTH.CSS — Welcome Screen · Login · Register
   ============================================================ */

/* ── Auth Shell ─────────────────────────────────────────── */
#auth-screen {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-6);
  position: relative;
  overflow: hidden;
}

/* ── Ambient Background ─────────────────────────────────── */
.auth-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.auth-bg::before {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  top: -200px; left: -150px;
  background: radial-gradient(circle,
    rgba(212,175,95,0.10) 0%,
    transparent 70%);
  animation: driftA 18s ease-in-out infinite alternate;
}

.auth-bg::after {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  bottom: -150px; right: -100px;
  background: radial-gradient(circle,
    rgba(91,141,239,0.08) 0%,
    transparent 65%);
  animation: driftB 22s ease-in-out infinite alternate;
}

/* Decorative grid lines */
.auth-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%,
    black 30%, transparent 100%);
}

/* Floating orbs */
.auth-orb {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(60px);
  opacity: 0.6;
  pointer-events: none;
}
.auth-orb-1 {
  width: 300px; height: 300px;
  background: rgba(212,175,95,0.08);
  top: 20%; left: 10%;
  animation: floatOrb 12s ease-in-out infinite;
}
.auth-orb-2 {
  width: 250px; height: 250px;
  background: rgba(91,141,239,0.07);
  bottom: 15%; right: 8%;
  animation: floatOrb 15s ease-in-out infinite reverse;
}
.auth-orb-3 {
  width: 200px; height: 200px;
  background: rgba(82,201,126,0.05);
  top: 60%; left: 55%;
  animation: floatOrb 10s ease-in-out infinite 3s;
}

@keyframes driftA {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(80px, 60px) scale(1.15); }
}
@keyframes driftB {
  from { transform: translate(0, 0) scale(1.1); }
  to   { transform: translate(-60px, -80px) scale(1); }
}
@keyframes floatOrb {
  0%, 100% { transform: translateY(0) translateX(0); }
  33%  { transform: translateY(-20px) translateX(10px); }
  66%  { transform: translateY(10px) translateX(-15px); }
}

/* ── Welcome State ──────────────────────────────────────── */
#welcome-view {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 540px;
  animation: welcomeIn 0.9s var(--ease-out) both;
}

@keyframes welcomeIn {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

.welcome-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-8);
  animation: welcomeIn 0.7s var(--ease-out) 0.1s both;
}

.welcome-logo-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--clr-accent), #b8972a);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: var(--shadow-accent);
  position: relative;
}
.welcome-logo-icon::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: calc(var(--radius-lg) + 3px);
  border: 1px solid var(--clr-accent-glow);
  animation: pulseRing 3s ease infinite;
}
@keyframes pulseRing {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%       { opacity: 0.8; transform: scale(1.05); }
}

.welcome-logo-name {
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--clr-text-primary);
  letter-spacing: -0.02em;
}

.welcome-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-4);
  animation: welcomeIn 0.7s var(--ease-out) 0.2s both;
}
.welcome-headline em {
  font-style: italic;
  color: var(--clr-accent);
  position: relative;
}
.welcome-headline em::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), transparent);
  opacity: 0.5;
}

.welcome-sub {
  font-size: 16px;
  color: var(--clr-text-secondary);
  line-height: 1.65;
  max-width: 400px;
  margin-bottom: var(--sp-10);
  font-weight: 300;
  animation: welcomeIn 0.7s var(--ease-out) 0.3s both;
}

.welcome-actions {
  display: flex;
  gap: var(--sp-3);
  animation: welcomeIn 0.7s var(--ease-out) 0.4s both;
}
.welcome-actions .btn {
  min-width: 140px;
  padding: var(--sp-4) var(--sp-8);
  font-size: 15px;
}

.welcome-features {
  display: flex;
  gap: var(--sp-6);
  margin-top: var(--sp-12);
  animation: welcomeIn 0.7s var(--ease-out) 0.5s both;
}
.feature-chip {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 12px;
  color: var(--clr-text-muted);
  letter-spacing: 0.02em;
}
.feature-chip-dot {
  width: 6px; height: 6px;
  border-radius: var(--radius-full);
  background: var(--clr-accent);
  opacity: 0.7;
}

/* ── Auth Forms ─────────────────────────────────────────── */
.auth-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: var(--clr-bg-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8) var(--sp-8);
  box-shadow: var(--shadow-lg);
  animation: panelIn 0.5s var(--ease-spring) both;
}

@keyframes panelIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Glass top strip */
.auth-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 20px; right: 20px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(212,175,95,0.4),
    transparent);
  border-radius: var(--radius-full);
}

.auth-panel-back {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 13px;
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-6);
  transition: color var(--dur-fast) ease;
}
.auth-panel-back:hover { color: var(--clr-text-primary); }
.auth-panel-back svg  { width: 14px; height: 14px; }

.auth-panel-header {
  margin-bottom: var(--sp-6);
}
.auth-panel-title {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--sp-1);
}
.auth-panel-subtitle {
  font-size: 14px;
  color: var(--clr-text-secondary);
  font-weight: 300;
}

/* Form layout */
.auth-form { display: flex; flex-direction: column; gap: var(--sp-4); }

.form-group { display: flex; flex-direction: column; gap: var(--sp-2); }
.form-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-text-secondary);
}
.form-error {
  font-size: 12px;
  color: var(--clr-danger);
  display: none;
}
.form-group.has-error .form-error { display: block; }
.form-group.has-error .input-field {
  border-color: rgba(224,92,107,0.5);
  box-shadow: 0 0 0 3px rgba(224,92,107,0.1);
}

/* Input with icon */
.input-with-icon {
  position: relative;
}
.input-with-icon .input-field {
  padding-left: 40px;
}
.input-with-icon .input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--clr-text-muted);
  pointer-events: none;
}

.auth-form-footer {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
}
.auth-form-footer .btn { width: 100%; padding: var(--sp-4); font-size: 15px; }

.auth-separator {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: 12px;
  color: var(--clr-text-muted);
}
.auth-separator::before,
.auth-separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

.auth-switch {
  text-align: center;
  font-size: 13px;
  color: var(--clr-text-secondary);
}
.auth-switch a {
  font-weight: 500;
  color: var(--clr-accent);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 480px) {
  .welcome-actions { flex-direction: column; width: 100%; }
  .welcome-actions .btn { min-width: unset; width: 100%; }
  .welcome-features { flex-wrap: wrap; justify-content: center; gap: var(--sp-3); }
  .auth-panel { padding: var(--sp-6) var(--sp-5); border-radius: var(--radius-lg); }
}