/* CDN Smirnov — Premium Auth UI
   Deep dark theme · Electric cyan & Phosphor lime · Glassmorphism */

:root {
  /* Core palette */
  --midnight: #0a0e27;
  --midnight-2: #0d1337;
  --midnight-3: #151b3d;
  --charcoal: #0c0c0f;
  --charcoal-2: #12121a;
  --charcoal-3: #1a1a24;
  /* Neon accents */
  --cyan: #00f5ff;
  --cyan-dim: rgba(0, 245, 255, 0.6);
  --cyan-soft: rgba(0, 245, 255, 0.15);
  --lime: #b8ff00;
  --lime-dim: rgba(184, 255, 0, 0.6);
  --lime-soft: rgba(184, 255, 0, 0.12);
  /* Glass */
  --glass-bg: rgba(13, 19, 55, 0.45);
  --glass-border: rgba(0, 245, 255, 0.12);
  --glass-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  /* Typography */
  --font-display: 'Orbitron', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-mono);
  font-weight: 400;
  color: #e0e6f0;
  background: var(--charcoal);
  overflow-x: hidden;
}

/* ——— Background ——— */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: radial-gradient(ellipse 120% 80% at 50% 0%, var(--midnight-2) 0%, var(--charcoal) 45%, var(--charcoal-2) 100%);
}

#data-flow {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 30%, var(--cyan-soft) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 70%, var(--lime-soft) 0%, transparent 45%),
    linear-gradient(180deg, transparent 0%, rgba(10, 14, 39, 0.4) 100%);
  pointer-events: none;
}

/* ——— Page layout ——— */
.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem 3rem;
}

/* ——— Logo & tagline ——— */
.logo {
  margin: 0 0 0.35em;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--lime) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 60px var(--cyan-soft);
  filter: drop-shadow(0 0 20px var(--cyan-dim));
}

.tagline {
  margin: 0 0 2.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--cyan-dim);
}

/* ——— Glass panel ——— */
.glass-panel {
  width: 100%;
  max-width: 420px;
  padding: 1.75rem;
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}

/* ——— Terminal block ——— */
.terminal {
  margin-bottom: 1.5rem;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(0, 245, 255, 0.08);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid rgba(0, 245, 255, 0.06);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot--red   { background: #ff5f57; }
.terminal-dot--yellow { background: #febc2e; }
.terminal-dot--green  { background: #28c840; }

.terminal-title {
  margin-left: 8px;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
}

.terminal-body {
  padding: 14px 16px;
}

.terminal-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
}

.code-prompt { color: var(--lime); }
.code-cmd   { color: var(--cyan); }
.code-comment { color: rgba(255, 255, 255, 0.35); }
.code-keyword { color: #c792ea; }
.code-fn    { color: #82aaff; }
.code-str   { color: #c3e88d; }
.code-cyan  { color: var(--cyan); }

/* ——— Auth form ——— */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 245, 255, 0.15);
  border-radius: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.25);
}

.form-group input:hover {
  border-color: rgba(0, 245, 255, 0.25);
}

.form-group input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan-soft);
}

.form-error {
  min-height: 1.4em;
  font-size: 0.8rem;
  color: #ff6b6b;
  text-align: center;
}

.form-error:not(:empty) {
  padding: 6px 0;
}

/* ——— Submit button ——— */
.btn-submit {
  position: relative;
  margin-top: 0.25rem;
  padding: 14px 24px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--charcoal);
  background: linear-gradient(135deg, var(--cyan) 0%, #00c8e0 100%);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--cyan-soft), 0 0 40px var(--cyan-dim);
}

.btn-submit:active {
  transform: translateY(0);
}

.btn-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn-submit:hover .btn-glow {
  opacity: 1;
}

/* ——— Footer ——— */
.footer {
  margin-top: 2.5rem;
}

.footer-line {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.2);
}