/* ===================================================================
   BOL — Break Your Stage Fear
   login.css · Scroll-driven layered animation experience
   Font: Sora (display) + DM Mono (accent text)
   Theme: Dark atmospheric · Blue-purple SaaS
=================================================================== */

/* ─── Design Tokens ────────────────────────────────────────────── */
:root {
  --bg:       #020617;
  --muted:    #9ca3af;
  --text:     #e5e7eb;
  --accent1:  #60a5fa;
  --accent2:  #22c55e;
  --card:     #081226;

  /* Extended palette */
  --violet:      #818cf8;
  --purple-deep: #7c3aed;
  --teal:        #2dd4bf;
  --amber:       #fbbf24;

  /* Glass surfaces */
  --glass-bg:     rgba(8, 18, 38, 0.70);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur:   blur(10px); /* OPTIMIZED: was blur(18px) */

  /* Typography */
  --font-display: 'Sora', system-ui, sans-serif;
  --font-mono:    'DM Mono', 'SF Mono', monospace;

  /* Animation */
  --ease-reveal: cubic-bezier(0.22, 0.9, 0.3, 1);
  --ease-lift:   cubic-bezier(0.34, 1.2, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-display);
  background:
    radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.18), transparent 60%),
    radial-gradient(circle at 85% 80%, rgba(34, 197, 94, 0.08),  transparent 70%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
button { font-family: var(--font-display); cursor: pointer; border: none; background: none; }
input  { font-family: var(--font-display); outline: none; }
svg    { display: block; flex-shrink: 0; }


/* ===================================================================
   AMBIENT BACKGROUND ORBS
   Fixed behind everything — give depth and atmosphere
=================================================================== */

.ambient-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(36px); /* OPTIMIZED: was blur(50px) — ~30% less fill-rate */
  will-change: transform;
  animation: orbDrift var(--dur, 20s) ease-in-out infinite;
}

.orb--violet {
  width: 560px; height: 560px; /* OPTIMIZED: was 700×700 */
  top: -20%; left: -15%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.22) 0%, transparent 70%);
  --dur: 24s;
  animation-delay: -3s;
}
.orb--blue {
  width: 380px; height: 380px; /* OPTIMIZED: was 500×500 */
  top: 35%; left: 50%;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.14) 0%, transparent 70%);
  --dur: 18s;
  animation-delay: -7s;
}
.orb--green {
  width: 460px; height: 460px; /* OPTIMIZED: was 600×600 */
  bottom: -15%; right: -10%;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.10) 0%, transparent 70%);
  --dur: 28s;
  animation-delay: -12s;
}

/* OPTIMIZED: removed scale() from keyframes — scale + blur forces re-rasterize every frame */
@keyframes orbDrift {
  0%   { transform: translate(0, 0);         }
  25%  { transform: translate(30px, -40px);  }
  50%  { transform: translate(-20px, 30px);  }
  75%  { transform: translate(40px,  20px);  }
  100% { transform: translate(0, 0);         }
}


/* ===================================================================
   SECTION 1 · HERO
=================================================================== */

.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(20px, 5vw, 80px);
  overflow: hidden;
}

/* ── Nav ── */
.hero__nav {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px clamp(24px, 5vw, 56px);
  opacity: 0;
  animation: navIn 0.7s var(--ease-reveal) 0.4s forwards;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__logo-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: radial-gradient(circle at 30% 25%, #93c5fd, #1d4ed8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 800;
  color: #060f24;
  box-shadow: 0 6px 20px rgba(29, 78, 216, 0.35);
}

.nav__wordmark {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
}

.nav__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  padding: 4px 12px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 999px;
  letter-spacing: 0.04em;
}

/* ── Hero body — animated on load ── */
.hero__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
  max-width: 800px;
}

/* Eyebrow */
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s var(--ease-reveal) 0.55s forwards;
}

/* OPTIMIZED: box-shadow is now static — was animated in @keyframes pulse causing continuous repaints */
.eyebrow__pulse {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 10px rgba(34,197,94,0.65); /* static */
  animation: pulse 2.2s ease-in-out infinite;
}

/* OPTIMIZED: animate opacity only — box-shadow animation was triggering paint every frame */
@keyframes pulse {
  0%, 100% { opacity: 1;   }
  50%       { opacity: 0.5; }
}

/* Headline — two-line cinematic */
.hero__headline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: clamp(48px, 9vw, 96px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.0;
}

.hero__line {
  display: block;
  opacity: 0;
  transform: translateY(32px) scale(0.97);
  animation: headlineReveal 0.9s var(--ease-reveal) forwards;
}

.hero__line[data-index="0"] { animation-delay: 0.7s; }
.hero__line[data-index="1"] { animation-delay: 0.88s; }

.hero__line--gradient {
  background: linear-gradient(130deg, var(--accent1) 0%, var(--violet) 50%, var(--purple-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Subtext */
.hero__sub {
  font-family: var(--font-mono);
  font-size: clamp(11px, 1.4vw, 13.5px);
  color: var(--muted);
  letter-spacing: 0.05em;
  opacity: 0;
  animation: fadeUp 0.7s var(--ease-reveal) 1.1s forwards;
}

/* ── Scroll cue ── */
.hero__scroll-cue {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-reveal) 1.5s forwards;
  transition: opacity 0.4s;
}

.scroll-cue__mouse {
  width: 22px; height: 34px;
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-cue__wheel {
  width: 3px; height: 7px;
  background: rgba(255,255,255,0.5);
  border-radius: 2px;
  animation: wheelScroll 1.8s ease-in-out infinite;
}

@keyframes wheelScroll {
  0%, 100% { transform: translateY(0); opacity: 1;   }
  60%       { transform: translateY(8px); opacity: 0; }
}

.scroll-cue__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(156,163,175,0.5);
}

.hero__edge-fade {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}


/* ===================================================================
   SECTION 2 · FEATURES
=================================================================== */

.features-section {
  position: relative;
  z-index: 1;
  padding: 100px clamp(20px, 6vw, 100px) 80px;
}

.features-section__label {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
  margin-bottom: 72px;
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-reveal), transform 0.7s var(--ease-reveal);
}

.features-section__label.show {
  opacity: 1;
  transform: translateY(0);
}

.section-label__rule {
  width: 80px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12));
}
.section-label__rule:last-child {
  background: linear-gradient(90deg, rgba(255,255,255,0.12), transparent);
}

.section-label__text {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent1);
}

/* ── 2×2 card grid ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

/* ── Feature card ── */
.feat-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);          /* OPTIMIZED: was blur(18px) */
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 32px 28px;
  overflow: hidden;
  cursor: default;

  opacity: 0;
  will-change: transform, opacity; /* OPTIMIZED: promote layer before JS fires .show */
  transition:
    opacity    0.75s var(--ease-reveal),
    transform  0.75s var(--ease-reveal),
    box-shadow 0.5s  var(--ease-smooth); /* OPTIMIZED: was 0.3s — longer = fewer repaint frames */
}

.feat-card[data-dir="left"] {
  transform: translateY(80px) translateX(-30px) rotate(-6deg);
}

.feat-card[data-dir="right"] {
  transform: translateY(80px) translateX(30px) rotate(6deg);
}

/* OPTIMIZED: single-layer shadow (no inset), will-change released after reveal */
.feat-card.show {
  opacity: 1;
  transform: translateY(0) translateX(0) rotate(0deg);
  will-change: auto; /* OPTIMIZED: release GPU hint after animation settles */
  box-shadow: 0 20px 50px rgba(2, 6, 23, 0.55); /* OPTIMIZED: was two-layer with inset */
}

/* OPTIMIZED: single-layer hover shadow */
.feat-card.show:hover {
  transform: translateY(-6px) rotate(0deg);
  box-shadow: 0 28px 60px rgba(2, 6, 23, 0.62); /* OPTIMIZED: was two-layer with inset */
}

/* OPTIMIZED: reduced blur + size + opacity — 4 elements × paint savings */
.feat-card__inner-glow {
  position: absolute;
  top: -40px; right: -40px;
  width: 140px; height: 140px; /* OPTIMIZED: was 160×160 */
  border-radius: 50%;
  filter: blur(36px);           /* OPTIMIZED: was blur(50px) */
  opacity: 0.28;                /* OPTIMIZED: was 0.35 */
  pointer-events: none;
}
.feat-card__inner-glow--blue   { background: radial-gradient(circle, rgba(96,165,250,1), transparent 70%); }
.feat-card__inner-glow--purple { background: radial-gradient(circle, rgba(129,140,248,1), transparent 70%); }
.feat-card__inner-glow--teal   { background: radial-gradient(circle, rgba(45,212,191,1), transparent 70%); }
.feat-card__inner-glow--amber  { background: radial-gradient(circle, rgba(251,191,36,1), transparent 70%); }

.feat-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.feat-card__num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: rgba(156,163,175,0.45);
  letter-spacing: 0.1em;
}

.feat-card__icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent1);
}

.feat-card__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 10px;
}

.feat-card__desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 20px;
}

.feat-card__chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(156,163,175,0.5);
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
}


/* ===================================================================
   SECTION 3 · LOGIN
=================================================================== */

.login-section {
  position: relative;
  z-index: 1;
  padding: 80px clamp(20px, 6vw, 100px) 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Node divider ── */
.node-divider {
  display: flex;
  align-items: center;
  gap: 0;
  width: 100%;
  max-width: 560px;
  margin-bottom: 64px;
}

.node-divider__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(96,165,250,0.2), transparent);
}

.node-divider__circle {
  width: 8px; height: 8px;
  border-radius: 50%;
  border: 1.5px solid rgba(96,165,250,0.4);
  background: rgba(96,165,250,0.15);
  margin: 0 12px;
  box-shadow: 0 0 12px rgba(96,165,250,0.3);
}

/* ── Login card wrap ── */
.login-wrap {
  width: 100%;
  max-width: 440px;
  opacity: 0;
  transform: translateY(60px) rotate(-2deg);
  transition:
    opacity   0.85s var(--ease-reveal),
    transform 0.85s var(--ease-reveal);
}

.login-wrap.show {
  opacity: 1;
  transform: translateY(0) rotate(0deg);
}

/* ── Glassmorphic card ── */
.login-card {
  position: relative;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);         /* OPTIMIZED: was blur(16px) */
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 22px;
  padding: 40px 36px;
  box-shadow: 0 20px 60px rgba(2, 6, 23, 0.6); /* OPTIMIZED: was 0 30px 80px */
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0; left: 8%; right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99,102,241,0.55), rgba(96,165,250,0.35), transparent);
}

.login-card__aurora {
  position: absolute;
  top: -60px; left: 50%;
  transform: translateX(-50%);
  width: 320px; height: 200px;
  background: radial-gradient(ellipse, rgba(99,102,241,0.12), transparent 70%);
  filter: blur(30px);
  pointer-events: none;
}

.login-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.login-card__logo-ring {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: radial-gradient(circle at 30% 25%, #93c5fd, #1d4ed8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #06122a;
  box-shadow: 0 8px 28px rgba(29,78,216,0.4);
  flex-shrink: 0;
}

.login-card__title {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
}

.login-card__subtitle {
  font-size: 13px;
  color: var(--muted);
  margin-top: 3px;
}

/* ── Form ── */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-field__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.01em;
}

.form-field__label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-field__forgot {
  font-size: 12px;
  color: var(--muted);
  transition: color 0.15s;
}
.form-field__forgot:hover { color: var(--accent1); }

.form-field__wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.form-field__icon {
  position: absolute;
  left: 14px;
  color: rgba(156,163,175,0.5);
  pointer-events: none;
  transition: color 0.2s;
}

.form-field__input {
  width: 100%;
  padding: 13px 14px 13px 42px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  transition:
    border-color 0.2s var(--ease-smooth),
    box-shadow   0.2s var(--ease-smooth),
    background   0.2s;
}
.form-field__input::placeholder {
  color: rgba(156,163,175,0.35);
}
.form-field__input:hover {
  border-color: rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
}
.form-field__input:focus {
  border-color: rgba(96,165,250,0.5);
  background: rgba(96,165,250,0.04);
  box-shadow: 0 0 0 3px rgba(96,165,250,0.12), 0 0 20px rgba(96,165,250,0.07);
}
.form-field__wrap:focus-within .form-field__icon {
  color: var(--accent1);
}

.form-field.has-error .form-field__input {
  border-color: rgba(248,113,113,0.5);
  box-shadow: 0 0 0 3px rgba(248,113,113,0.1);
}

#passwordInput { padding-right: 44px; }

.form-field__toggle-pw {
  position: absolute;
  right: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 4px;
  transition: color 0.15s;
}
.form-field__toggle-pw:hover { color: var(--text); }

.form-field__error {
  font-size: 12px;
  color: #f87171;
  display: block;
  min-height: 16px;
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity 0.2s, transform 0.2s;
}
.form-field__error.visible {
  opacity: 1;
  transform: translateY(0);
}

.form-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background: rgba(248,113,113,0.07);
  border: 1px solid rgba(248,113,113,0.22);
  border-radius: 10px;
  font-size: 13px;
  color: #fca5a5;
  animation: alertSlide 0.25s var(--ease-reveal) forwards;
}
@keyframes alertSlide {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Login button ── */
.login-btn {
  position: relative;
  width: 100%;
  padding: 14px;
  background: linear-gradient(90deg, var(--accent1), #2563eb);
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 28px rgba(37,99,235,0.3), 0 0 0 1px rgba(255,255,255,0.08) inset;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.2s var(--ease-lift), box-shadow 0.2s var(--ease-smooth), filter 0.2s;
}

.login-btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 55%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: skewX(-18deg);
  transition: left 0.55s var(--ease-smooth);
}
/* OPTIMIZED: simplified to single-layer shadow */
.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.38);
  filter: brightness(1.07);
}
.login-btn:hover::before { left: 150%; }
.login-btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 6px 18px rgba(37,99,235,0.22);
}

.login-btn.loading .login-btn__label   { opacity: 0; }
.login-btn.loading .login-btn__spinner { display: block; }

.login-btn__label   { transition: opacity 0.15s; }
.login-btn__spinner {
  display: none;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.28);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.login-card__footer-note {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 24px;
}
.login-card__create-link {
  color: var(--accent1);
  font-weight: 500;
  transition: color 0.15s;
}
.login-card__create-link:hover { color: #93c5fd; text-decoration: underline; }

/* ── Site footer ── */
.site-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 56px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(156,163,175,0.35);
}
.site-footer__sep { opacity: 0.4; }


/* ===================================================================
   SHARED KEYFRAMES
=================================================================== */

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

@keyframes headlineReveal {
  from { opacity: 0; transform: translateY(32px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes navIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===================================================================
   AUTOCOMPLETE OVERRIDE
=================================================================== */

input:-webkit-autofill,
input:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0 1000px rgba(8,18,38,0.95) inset !important;
  -webkit-text-fill-color: var(--text) !important;
  caret-color: var(--text);
  transition: background-color 9999s;
}


/* ===================================================================
   RESPONSIVE
=================================================================== */

@media (max-width: 700px) {
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .hero__headline {
    font-size: clamp(38px, 11vw, 56px);
  }

  .hero__sub {
    font-size: 10px;
  }

  .login-card {
    padding: 32px 24px;
  }

  .features-section {
    padding: 80px 20px 60px;
  }

  .login-section {
    padding: 60px 20px 48px;
  }

  /* OPTIMIZED: clean vertical-only entry on mobile — no rotation, no side offset */
  .feat-card[data-dir="left"],
  .feat-card[data-dir="right"] {
    transform: translateY(48px);
  }
}

@media (max-width: 480px) {
  .hero__nav { padding: 20px 20px; }

  .feat-card { padding: 24px 20px; }

  .site-footer { flex-direction: column; gap: 4px; text-align: center; }
}



/* signup modal overlay */
    .signup-overlay {
      position: fixed;
      inset: 0;
      z-index: 999;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
      background: rgba(2, 6, 23, 0.72);
      backdrop-filter: blur(10px);         /* OPTIMIZED: was blur(14px) */
      -webkit-backdrop-filter: blur(10px);
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s cubic-bezier(0.22, 0.9, 0.3, 1);
    }
    .signup-overlay.open {
      opacity: 1;
      pointer-events: all;
    }

    /* ── Modal card ── */
    .signup-card {
      position: relative;
      width: 100%;
      max-width: 440px;
      max-height: 92vh;
      overflow-y: auto;
      background: rgba(8, 18, 38, 0.92);
      backdrop-filter: blur(10px);         /* OPTIMIZED: was blur(18px) */
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: 22px;
      padding: 40px 36px 36px;
      box-shadow: 0 24px 60px rgba(2, 6, 23, 0.75), 0 0 0 1px rgba(99,102,241,0.12) inset; /* OPTIMIZED: was 0 32px 80px */
      transform: scale(0.92) translateY(24px);
      transition: transform 0.4s cubic-bezier(0.34, 1.2, 0.64, 1);
    }
    .signup-overlay.open .signup-card {
      transform: scale(1) translateY(0);
    }

    .signup-card::before {
      content: '';
      position: absolute;
      top: 0; left: 8%; right: 8%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(129,140,248,0.55), rgba(96,165,250,0.35), transparent);
    }

    .signup-card__aurora {
      position: absolute;
      top: -60px; left: 50%;
      transform: translateX(-50%);
      width: 320px; height: 180px;
      background: radial-gradient(ellipse, rgba(129,140,248,0.10), transparent 70%);
      filter: blur(30px);
      pointer-events: none;
    }

    .signup-close {
      position: absolute;
      top: 16px; right: 16px;
      width: 30px; height: 30px;
      border-radius: 8px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.07);
      color: rgba(156,163,175,0.7);
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.15s, color 0.15s;
      z-index: 2;
      font-family: 'Sora', system-ui, sans-serif;
    }
    .signup-close:hover {
      background: rgba(255,255,255,0.08);
      color: #e5e7eb;
    }

    .signup-card__header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 28px;
    }
    .signup-card__logo-ring {
      width: 44px; height: 44px;
      border-radius: 12px;
      background: radial-gradient(circle at 30% 25%, #a5b4fc, #4f46e5);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 800;
      color: #06122a;
      box-shadow: 0 8px 28px rgba(79,70,229,0.4);
      flex-shrink: 0;
    }
    .signup-card__title {
      font-size: 21px;
      font-weight: 700;
      letter-spacing: -0.025em;
      color: #e5e7eb;
    }
    .signup-card__subtitle {
      font-size: 13px;
      color: #9ca3af;
      margin-top: 3px;
    }

    .signup-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .signup-form .form-field__input {
      width: 100%;
      padding: 13px 14px 13px 42px;
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: 12px;
      color: #e5e7eb;
      font-size: 14px;
      font-family: 'Sora', system-ui, sans-serif;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    }
    .signup-form .form-field__input::placeholder { color: rgba(156,163,175,0.35); }
    .signup-form .form-field__input:hover {
      border-color: rgba(255,255,255,0.1);
      background: rgba(255,255,255,0.04);
    }
    .signup-form .form-field__input:focus {
      border-color: rgba(129,140,248,0.5);
      background: rgba(129,140,248,0.04);
      box-shadow: 0 0 0 3px rgba(129,140,248,0.12), 0 0 20px rgba(129,140,248,0.07);
    }
    .signup-form .form-field.has-error .form-field__input {
      border-color: rgba(248,113,113,0.5);
      box-shadow: 0 0 0 3px rgba(248,113,113,0.1);
    }
    .signup-form .form-field__wrap:focus-within .form-field__icon { color: #818cf8; }

    .signup-btn {
      position: relative;
      width: 100%;
      padding: 14px;
      margin-top: 4px;
      background: linear-gradient(90deg, #818cf8, #4f46e5);
      border-radius: 12px;
      font-size: 15px;
      font-weight: 600;
      font-family: 'Sora', system-ui, sans-serif;
      color: #fff;
      letter-spacing: 0.01em;
      border: none;
      cursor: pointer;
      box-shadow: 0 10px 28px rgba(79,70,229,0.3), 0 0 0 1px rgba(255,255,255,0.08) inset;
      overflow: hidden;
      isolation: isolate;
      transition: transform 0.2s cubic-bezier(0.34, 1.2, 0.64, 1), box-shadow 0.2s, filter 0.2s;
    }
    .signup-btn::before {
      content: '';
      position: absolute;
      top: 0; left: -100%;
      width: 55%; height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
      transform: skewX(-18deg);
      transition: left 0.55s cubic-bezier(0.4, 0, 0.2, 1);
    }
    /* OPTIMIZED: simplified to single-layer shadow */
    .signup-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 40px rgba(79, 70, 229, 0.38);
      filter: brightness(1.07);
    }
    .signup-btn:hover::before { left: 150%; }
    .signup-btn:active { transform: translateY(0) scale(0.98); }
    .signup-btn.loading .signup-btn__label { opacity: 0; }
    .signup-btn.loading .signup-btn__spinner { display: block; }
    .signup-btn__label { transition: opacity 0.15s; }
    .signup-btn__spinner {
      display: none;
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 18px; height: 18px;
      border: 2px solid rgba(255,255,255,0.28);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 0.65s linear infinite;
    }

    .signup-card__footer-note {
      text-align: center;
      font-size: 13px;
      color: #9ca3af;
      margin-top: 22px;
    }
    .signup-card__signin-link {
      color: #818cf8;
      font-weight: 500;
      cursor: pointer;
      transition: color 0.15s;
    }
    .signup-card__signin-link:hover { color: #a5b4fc; text-decoration: underline; }

    .signup-card::-webkit-scrollbar { width: 4px; }
    .signup-card::-webkit-scrollbar-track { background: transparent; }
    .signup-card::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 2px; }

    @media (max-width: 480px) {
      .signup-card { padding: 32px 24px 28px; }
    }


/* ===================================================================
   MOBILE RESPONSIVENESS — ≤ 768px
=================================================================== */

@media (max-width: 768px) {

  html, body {
    overflow-x: hidden;
    width: 100%;
  }

  /* Orbs: scale down to prevent overflow */
  .orb--violet {
    width: 320px;
    height: 320px;
    top: -10%;
    left: -20%;
  }

  .orb--blue {
    width: 220px;
    height: 220px;
    top: 30%;
    left: 40%;
  }

  .orb--green {
    width: 260px;
    height: 260px;
    bottom: -10%;
    right: -15%;
  }

  .hero {
    padding: 0 clamp(16px, 5vw, 32px);
    overflow: hidden;
  }

  .hero__nav {
    padding: 20px 20px;
  }

  .nav__logo-mark {
    width: 30px;
    height: 30px;
    font-size: 14px;
    border-radius: 8px;
  }

  .nav__wordmark {
    font-size: 13px;
  }

  .nav__tag {
    font-size: 10px;
    padding: 3px 9px;
  }

  .hero__body {
    gap: 20px;
    max-width: 100%;
    padding: 0 8px;
  }

  .hero__eyebrow {
    font-size: 10px;
    padding: 5px 13px;
    white-space: normal;
    text-align: center;
    letter-spacing: 0.04em;
  }

  .hero__headline {
    letter-spacing: -0.025em;
    gap: 2px;
  }

  .hero__sub {
    font-size: 9.5px;
    letter-spacing: 0.03em;
    word-break: break-word;
    white-space: normal;
    line-height: 1.7;
  }

  .hero__scroll-cue {
    bottom: 28px;
  }

  .features-section {
    padding: 72px 16px 56px;
  }

  .features-section__label {
    gap: 14px;
    margin-bottom: 48px;
  }

  .section-label__rule {
    width: 48px;
  }

  .section-label__text {
    font-size: 10.5px;
    letter-spacing: 0.10em;
    white-space: nowrap;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    max-width: 100%;
  }

  .feat-card {
    padding: 24px 20px;
    border-radius: 16px;
  }

  /* OPTIMIZED: clean vertical-only entry — zero rotation, zero X offset */
  .feat-card[data-dir="left"],
  .feat-card[data-dir="right"] {
    transform: translateY(48px);
  }

  /* OPTIMIZED: lighter hover lift on mobile, no rotation risk */
  .feat-card.show:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(2, 6, 23, 0.5);
  }

  /* OPTIMIZED: lighter shadow on revealed cards on mobile */
  .feat-card.show {
    box-shadow: 0 12px 32px rgba(2, 6, 23, 0.45);
  }

  .feat-card__inner-glow {
    width: 120px;
    height: 120px;
    top: -30px;
    right: -30px;
  }

  .feat-card__title {
    font-size: 16px;
  }

  .feat-card__desc {
    font-size: 13px;
  }

  .feat-card__icon {
    width: 36px;
    height: 36px;
  }

  .login-section {
    padding: 48px 16px 40px;
  }

  .node-divider {
    max-width: 100%;
    margin-bottom: 40px;
  }

  .login-wrap {
    max-width: 100%;
  }

  .login-card {
    padding: 28px 20px 28px;
    border-radius: 18px;
  }

  .login-card__header {
    gap: 12px;
    margin-bottom: 24px;
  }

  .login-card__logo-ring {
    width: 38px;
    height: 38px;
    font-size: 17px;
    border-radius: 10px;
  }

  .login-card__title {
    font-size: 18px;
  }

  .login-card__subtitle {
    font-size: 12px;
  }

  .form-field__input {
    font-size: 16px; /* prevents iOS zoom on focus */
    padding: 13px 14px 13px 42px;
  }

  #passwordInput { padding-right: 44px; }

  .login-btn {
    font-size: 15px;
    padding: 14px;
  }

  .login-card__footer-note {
    font-size: 12px;
    margin-top: 20px;
  }

  .site-footer {
    flex-direction: column;
    gap: 4px;
    margin-top: 36px;
    text-align: center;
  }

  .signup-overlay {
    padding: 16px;
    align-items: flex-end;
  }

  .signup-card {
    max-width: 100%;
    max-height: 88vh;
    padding: 28px 18px 24px;
    border-radius: 20px 20px 14px 14px;
  }

  .signup-card__header {
    gap: 12px;
    margin-bottom: 20px;
  }

  .signup-card__logo-ring {
    width: 38px;
    height: 38px;
    font-size: 17px;
    border-radius: 10px;
  }

  .signup-card__title {
    font-size: 18px;
  }

  .signup-card__subtitle {
    font-size: 12px;
  }

  .signup-form .form-field__input {
    font-size: 16px; /* prevents iOS zoom on focus */
  }

  .signup-form {
    gap: 14px;
  }

  .signup-btn {
    font-size: 15px;
    padding: 13px;
  }

  .signup-card__footer-note {
    font-size: 12px;
    margin-top: 16px;
  }
}

@media (max-width: 480px) {

  .nav__tag {
    display: none;
  }

  .hero__sub {
    font-size: 9px;
    word-spacing: -1px;
  }

  .feat-card {
    padding: 20px 16px;
  }

  .feat-card__title { font-size: 15px; }
  .feat-card__desc  { font-size: 12.5px; }

  .login-card {
    padding: 24px 16px 24px;
  }

  .signup-card {
    padding: 24px 16px 22px;
  }
}

@media (max-width: 380px) {

  .hero__nav {
    padding: 16px 14px;
  }

  .nav__logo-mark {
    width: 26px;
    height: 26px;
    font-size: 12px;
  }

  .nav__wordmark {
    font-size: 12px;
  }

  .eyebrow__pulse {
    display: none;
  }

  .hero__eyebrow {
    font-size: 9px;
    padding: 4px 10px;
  }

  .section-label__rule {
    width: 28px;
  }

  .feat-card {
    border-radius: 14px;
  }

  .login-card {
    padding: 20px 14px 20px;
    border-radius: 14px;
  }

  .login-card__title  { font-size: 16px; }
  .login-card__subtitle { font-size: 11px; }

  .signup-overlay { padding: 10px; }

  .signup-card {
    padding: 22px 14px 20px;
    border-radius: 16px 16px 10px 10px;
  }
}