/* Site Gate — Reusable Passwordless Access Control */
/* All selectors prefixed with #site-gate to avoid collisions */

:root {
  --gate-bg: rgba(10, 12, 20, 0.97);
  --gate-card-bg: #151820;
  --gate-card-border: #2a2d3a;
  --gate-accent: #4f8cff;
  --gate-accent-hover: #6aa0ff;
  --gate-text: #e8eaf0;
  --gate-text-muted: #8a8d9a;
  --gate-input-bg: #1c1f2a;
  --gate-input-border: #333649;
  --gate-input-focus: #4f8cff;
  --gate-error: #ff5c5c;
  --gate-success: #4ccc6a;
  --gate-radius: 12px;
  --gate-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#site-gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gate-bg);
  font-family: var(--gate-font);
  color: var(--gate-text);
  transition: opacity 0.5s ease;
}

#site-gate-overlay.gate-hidden {
  opacity: 0;
  pointer-events: none;
}

#site-gate-card {
  width: 100%;
  max-width: 420px;
  background: var(--gate-card-bg);
  border: 1px solid var(--gate-card-border);
  border-radius: var(--gate-radius);
  padding: 40px 36px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

#site-gate-logo {
  font-size: 48px;
  text-align: center;
  margin-bottom: 8px;
  line-height: 1;
}

#site-gate-title {
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--gate-text);
}

#site-gate-subtitle {
  text-align: center;
  font-size: 14px;
  color: var(--gate-text-muted);
  margin: 0 0 28px;
}

/* Steps */
.gate-step {
  display: none;
}

.gate-step.gate-active {
  display: block;
}

/* Form elements */
.gate-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gate-text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.gate-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--gate-input-bg);
  border: 1px solid var(--gate-input-border);
  border-radius: 8px;
  color: var(--gate-text);
  font-size: 15px;
  font-family: var(--gate-font);
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
  margin-bottom: 16px;
}

.gate-input:focus {
  border-color: var(--gate-input-focus);
}

.gate-input::placeholder {
  color: var(--gate-text-muted);
  opacity: 0.6;
}

/* Code input */
#site-gate-code-input {
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 12px;
  padding: 14px;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

/* Buttons */
.gate-btn {
  width: 100%;
  padding: 13px;
  background: var(--gate-accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--gate-font);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  margin-top: 8px;
}

.gate-btn:hover {
  background: var(--gate-accent-hover);
}

.gate-btn:active {
  transform: scale(0.98);
}

.gate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Error / status messages */
.gate-error {
  color: var(--gate-error);
  font-size: 13px;
  margin-top: -8px;
  margin-bottom: 12px;
  min-height: 18px;
}

.gate-info {
  color: var(--gate-text-muted);
  font-size: 13px;
  text-align: center;
  margin-top: 12px;
}

.gate-info a {
  color: var(--gate-accent);
  text-decoration: none;
}

.gate-info a:hover {
  text-decoration: underline;
}

/* NDA step */
#site-gate-nda-box {
  max-height: 280px;
  overflow-y: auto;
  background: var(--gate-input-bg);
  border: 1px solid var(--gate-input-border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gate-text-muted);
}

#site-gate-nda-box h4 {
  color: var(--gate-text);
  font-size: 14px;
  margin: 16px 0 6px;
}

#site-gate-nda-box h4:first-child {
  margin-top: 0;
}

#site-gate-nda-signature {
  background: var(--gate-input-bg);
  border: 1px solid var(--gate-input-border);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.6;
}

#site-gate-nda-signature strong {
  color: var(--gate-text);
}

/* Spinner */
.gate-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: gate-spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes gate-spin {
  to { transform: rotate(360deg); }
}

/* Responsive — mobile full-screen card */
@media (max-width: 520px) {
  #site-gate-card {
    max-width: 100%;
    min-height: 100vh;
    border-radius: 0;
    border: none;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}