/* Base styling and design system */

:root {
  --bg-primary: #070710;
  --bg-secondary: rgba(255, 255, 255, 0.035);
  --bg-tertiary: rgba(255, 255, 255, 0.055);
  --bg-input: rgba(0, 0, 0, 0.4);
  --border-primary: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);
  --border-accent: rgba(138, 180, 255, 0.4);
  --text-primary: #f0f0f5;
  --text-secondary: rgba(255, 255, 255, 0.62);
  --text-muted: rgba(255, 255, 255, 0.32);
  --accent-primary: rgba(138, 180, 255, 0.9);
  --accent-hover: rgba(120, 160, 240, 1);
  --accent-secondary: rgba(180, 140, 255, 0.8);
  --error: #ef4444;
  --warning: #f59e0b;
  --success: #10b981;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --glass-bg: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --ring: rgba(255, 255, 255, 0.15);
  --ring-strong: rgba(255, 255, 255, 0.4);
  --glow: rgba(138, 180, 255, 0.2);
  --glow-strong: rgba(138, 180, 255, 0.32);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 320ms;
  --stitch-bg: #070710;
  --stitch-dot-base: #444;
  --stitch-dot-lit: #fff;
  --stitch-grid-step: 10px;
  --stitch-dot-inner: 0.75px;
  --stitch-dot-outer: 1.15px;
  --stitch-glow-radius: 140px;
  --stitch-glow-fade-ms: 800;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  overflow-y: scroll;
  -webkit-font-smoothing: antialiased;
  background: var(--stitch-bg);
}

body {
  background: var(--bg-primary);
  font-family: var(--font-sans);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 0;
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.stitch-grid__layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M5 4.25L5.75 5 5 5.75 4.25 5Z' fill='%23444'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M5 4.25L5.75 5 5 5.75 4.25 5Z' fill='%23444'/%3E%3C/svg%3E");
  background-size: var(--stitch-grid-step) var(--stitch-grid-step),
    var(--stitch-grid-step) var(--stitch-grid-step);
  background-position: calc(var(--stitch-grid-step) / 2) calc(var(--stitch-grid-step) / 2),
    var(--stitch-grid-step) var(--stitch-grid-step);
}

.stitch-grid__layer--lit {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M5 4.25L5.75 5 5 5.75 4.25 5Z' fill='%23fff'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M5 4.25L5.75 5 5 5.75 4.25 5Z' fill='%23fff'/%3E%3C/svg%3E");
  background-size: var(--stitch-grid-step) var(--stitch-grid-step),
    var(--stitch-grid-step) var(--stitch-grid-step);
  background-position: calc(var(--stitch-grid-step) / 2) calc(var(--stitch-grid-step) / 2),
    var(--stitch-grid-step) var(--stitch-grid-step);
  mask-image: linear-gradient(transparent, transparent);
  -webkit-mask-image: linear-gradient(transparent, transparent);
  opacity: 0;
}

.blackhole-vortex {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  height: 900px;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(100, 80, 200, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 55% at 50% 50%, rgba(60, 40, 140, 0.04) 0%, transparent 80%),
    radial-gradient(ellipse 80% 70% at 50% 50%, rgba(20, 10, 60, 0.08) 0%, transparent 100%);
  animation: vortex-pulse 12s ease-in-out infinite alternate;
}

.blackhole-ring {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 520px;
  height: 520px;
  z-index: 0;
  pointer-events: none;
  border-radius: 50%;
  border: 1px solid rgba(138, 180, 255, 0.04);
  box-shadow:
    0 0 80px rgba(138, 180, 255, 0.03),
    0 0 160px rgba(100, 60, 200, 0.02),
    inset 0 0 80px rgba(138, 180, 255, 0.02);
  animation: ring-breathe 8s ease-in-out infinite alternate;
}

.top-actions {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 210;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  padding: 16px 24px;
  background: transparent;
}

.top-actions-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.top-actions-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.top-actions-brand-text {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-primary);
}

.top-actions-auth-slot {
  position: relative;
  display: grid;
  grid-template-columns: max-content;
  align-items: center;
  justify-items: end;
  min-height: 36px;
  flex-shrink: 0;
}

.top-action-link,
#signout-btn,
#signin-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 9999px;
  border: none;
  background: rgba(255, 255, 255, 0.045);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  gap: 6px;
  cursor: pointer;
  isolation: isolate;
  transition:
    color var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
  box-shadow:
    0 0 0 1px var(--ring),
    0 8px 20px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.top-action-link::before,
#signout-btn::before,
#signin-btn::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: inherit;
  z-index: -2;
  opacity: 0;
  background: radial-gradient(circle at 50% 40%, var(--glow-strong), transparent 62%);
  filter: blur(10px);
  transform: scale(0.92);
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.top-action-link:hover,
#signout-btn:hover,
#signin-btn:hover {
  color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow:
    0 0 0 1px var(--ring-strong),
    0 0 24px var(--glow),
    0 12px 28px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.top-action-link:hover::before,
#signout-btn:hover::before,
#signin-btn:hover::before {
  opacity: 0.6;
  transform: scale(1);
}

.top-action-link:active,
#signout-btn:active,
#signin-btn:active {
  transform: translateY(0);
  transition-duration: 120ms;
}

#signout-btn {
  display: none;
}

.page-layout {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container {
  position: relative;
  z-index: 4;
  max-width: 640px;
  width: 100%;
  padding: 120px 24px 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
}

.logo-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 40px;
  width: 100%;
  align-self: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 0 14px rgba(167, 139, 250, 0.45));
}

.logo-icon svg {
  width: 100%;
  height: 100%;
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.14em;
  background: linear-gradient(135deg, #7c3aed 0%, #a78bfa 40%, #c4b5fd 60%, #7c3aed 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: logoGradientShift 3s ease infinite;
  filter: drop-shadow(0 0 18px rgba(124, 58, 237, 0.35));
}

.logo-tagline {
  display: block;
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-primary);
  text-align: center;
  min-height: 1.3em;
}

.logo-tagline:empty {
  visibility: hidden;
}

@keyframes logoGradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes vortex-pulse {
  0% { opacity: 0.6; transform: translate(-50%, -50%) scale(0.95) rotate(0deg); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1.08) rotate(8deg); }
}

@keyframes ring-breathe {
  0% { opacity: 0.4; transform: translate(-50%, -50%) scale(0.98); }
  100% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.04); }
}

@media (prefers-reduced-motion: reduce) {
  .stitch-grid__layer--lit,
  .stitch-grid__layer--lit,
  .logo-text {
    animation: none;
  }
}

@media (max-width: 600px) {
  .top-action-link,
  #signout-btn,
  #signin-btn {
    height: 32px;
    padding: 0 12px;
    font-size: 12px;
  }
}