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

body {
  min-height: 100vh; min-height: 100dvh;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: #09090b; color: #fafafa;
  display: flex; overflow: hidden;
}

/* ─── LEFT PANEL ─── */
.login-left {
  flex: 1; display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  padding: 48px; position: relative; overflow: hidden;
}

.login-left::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(99,102,241,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(168,85,247,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.login-left::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
  pointer-events: none;
}

.login-branding {
  position: relative; z-index: 1; text-align: center; max-width: 400px;
}

.login-branding .logo {
  width: 72px; height: 72px; border-radius: 18px;
  margin: 0 auto 28px;
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 40px rgba(99,102,241,0.15);
}

.login-branding .logo img { width: 44px; height: 44px; }

.login-branding h2 {
  font-size: 28px; font-weight: 700; letter-spacing: -0.5px;
  margin-bottom: 12px; line-height: 1.2;
}

.login-branding h2 span { color: #818cf8; }

.login-branding p {
  font-size: 15px; color: #71717a; line-height: 1.6; margin-bottom: 36px;
}

.code-preview {
  background: rgba(18,18,24,0.9);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px; padding: 20px; text-align: left;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px; line-height: 1.8;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  max-width: 340px; width: 100%;
}

.code-preview .dots {
  display: flex; gap: 6px; margin-bottom: 14px;
}

.code-preview .dots span {
  width: 10px; height: 10px; border-radius: 50%;
}

.code-preview .dots span:nth-child(1) { background: #ef4444; }
.code-preview .dots span:nth-child(2) { background: #eab308; }
.code-preview .dots span:nth-child(3) { background: #22c55e; }

.code-preview code { color: #a1a1aa; }
.code-preview .tag { color: #818cf8; }
.code-preview .str { color: #34d399; }
.code-preview .attr { color: #fbbf24; }
.code-preview .fn { color: #c084fc; }
.code-preview .cmt { color: #3f3f46; }

/* ─── RIGHT PANEL ─── */
.login-right {
  width: 480px; min-width: 400px;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  padding: 48px;
  background: rgba(18,18,24,0.5);
  border-left: 1px solid rgba(255,255,255,0.04);
}

.login-card {
  width: 100%; max-width: 340px;
}

.login-card h1 {
  font-size: 24px; font-weight: 700; margin-bottom: 6px;
}

.login-card .subtitle {
  font-size: 14px; color: #71717a; margin-bottom: 32px;
}

.features-list {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 32px;
}

.features-list span {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 10px; border-radius: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 12px; color: #a1a1aa;
}

.features-list span svg {
  width: 12px; height: 12px; color: #22c55e;
}

.auth-buttons { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }

.auth-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 13px 16px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  color: #e4e4e7;
  font-size: 14px; font-family: inherit; font-weight: 500;
  cursor: pointer; transition: all 0.2s ease;
  position: relative; overflow: hidden;
}

.auth-btn:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.14);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.auth-btn:active { transform: translateY(0) scale(0.99); }
.auth-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none !important; }

.auth-btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.auth-btn .spinner {
  display: none; width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.15);
  border-top-color: #e4e4e7; border-radius: 50%;
  animation: spin 1s linear infinite;
}

.auth-btn.loading .spinner { display: inline-block; }
.auth-btn.loading .btn-text { display: none; }

.login-footer {
  text-align: center; font-size: 11px; color: #52525b;
}

.login-footer a { color: #71717a; text-decoration: none; }
.login-footer a:hover { color: #a1a1aa; text-decoration: underline; }

/* ─── LOADING OVERLAY ─── */
#loadingOverlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.88);
  display: none; align-items: center; justify-content: center;
  flex-direction: column; gap: 16px;
  backdrop-filter: blur(4px);
}

#loadingOverlay .loader-ring {
  width: 40px; height: 40px;
  border: 3px solid rgba(255,255,255,0.08);
  border-top-color: #818cf8;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

#loadingOverlay p { color: #a1a1aa; font-size: 14px; }

/* ─── BACK LINK ─── */
.back-link {
  position: absolute; top: 24px; left: 24px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  color: #71717a; text-decoration: none; font-size: 13px;
  padding: 6px 12px; border-radius: 6px;
  transition: color 0.2s;
}

.back-link:hover { color: #e4e4e7; }
.back-link svg { width: 14px; height: 14px; }

/* ─── KEYFRAMES ─── */
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  body { flex-direction: column; overflow: auto; }

  .login-left {
    display: none;
  }

  .login-right {
    width: 100%; min-width: 0;
    border-left: none;
    padding: 48px 24px;
    min-height: 100vh; min-height: 100dvh;
  }
}

@media (max-width: 480px) {
  .login-right { padding: 32px 20px; }
  .login-card h1 { font-size: 20px; }
  .back-link { top: 16px; left: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}