/* ============================================================
   RadiaLog Device — Sales Modal
   Follows discovery-center / billing-center overlay pattern
   ============================================================ */

/* Root & visibility orchestration */
#radialog-modal-root {
  position: fixed;
  inset: 0;
  z-index: 15000;
  font-family: var(--font-mono, 'VT323', monospace);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 380ms cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0s linear 380ms;
}

#radialog-modal-root.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 380ms cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0s linear 0s;
}

/* Backdrop */
#radialog-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.68);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 380ms cubic-bezier(0.16, 1, 0.3, 1);
}

#radialog-modal-root.is-open #radialog-backdrop {
  opacity: 1;
}

/* Shell */
#radialog-shell {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  width: min(560px, 92vw);
  max-height: 88vh;
  overflow-y: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 20px;
  padding: 28px 30px calc(32px + env(safe-area-inset-bottom, 0px));
  box-shadow: var(--shadow-elevated);
  box-sizing: border-box;
  opacity: 0;
  transition: opacity 380ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 380ms cubic-bezier(0.16, 1, 0.3, 1);
  overscroll-behavior: contain;
}

#radialog-modal-root.is-open #radialog-shell {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

@media (max-width: 600px) {
  #radialog-shell {
    padding: 20px 16px calc(24px + env(safe-area-inset-bottom, 0px));
    border-radius: 16px;
    top: 5vh;
    transform: translate(-50%, 0) scale(0.96);
    max-height: 90vh;
  }
  #radialog-modal-root.is-open #radialog-shell {
    transform: translate(-50%, 0) scale(1);
  }
}

/* Header */
.radialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 20px;
}

.radialog-header h2 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: 1.5px;
  color: var(--primary-color, #FFE030);
  text-shadow: 0 0 6px rgba(255, 224, 48, 0.18);
  flex: 1 1 auto;
}

.radialog-close-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(11, 11, 13, 0.6);
  border: 1px solid var(--border-medium);
  color: var(--primary-color, #FFE030);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  font-size: 18px;
  line-height: 1;
  opacity: 0.9;
  flex-shrink: 0;
}

.radialog-close-btn:hover,
.radialog-close-btn:focus-visible {
  background: rgba(11, 11, 13, 0.8);
  border-color: var(--primary-color, #FFE030);
  opacity: 1;
  transform: translateY(-1px);
}

/* Body */
.radialog-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Open Source callout */
.radialog-opensource {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--primary-dim);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  font-size: 0.78rem;
  letter-spacing: 0.4px;
  color: #d4d4d4;
  line-height: 1.5;
}

.radialog-opensource > .mdi {
  font-size: 24px;
  color: var(--secondary-color, #F08000);
  flex-shrink: 0;
  margin-top: 2px;
}

.radialog-opensource strong {
  color: var(--secondary-color, #F08000);
}

.radialog-gh-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--secondary-color, #F08000);
  text-decoration: none;
  margin-left: 4px;
  font-weight: 600;
}

.radialog-gh-link:hover {
  color: var(--primary-color, #FFE030);
  text-decoration: underline;
}

.radialog-gh-link .mdi {
  font-size: 14px;
}

/* Hero */
.radialog-hero {
  text-align: center;
  padding: 8px 0 0;
}

.radialog-hero-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-dim);
  border: 1px solid rgba(255, 224, 48, 0.25);
  margin-bottom: 12px;
}

.radialog-hero-icon .mdi {
  font-size: 28px;
  color: var(--primary-color, #FFE030);
}

.radialog-hero h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  letter-spacing: 1px;
  color: #fff;
}

.radialog-subtitle {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-medium, #aaa);
  letter-spacing: 0.4px;
  line-height: 1.5;
  max-width: 420px;
  margin: 0 auto;
}

/* Feature grid */
.radialog-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 480px) {
  .radialog-features {
    grid-template-columns: 1fr;
  }
}

.radialog-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.radialog-feature:hover {
  border-color: var(--border-medium);
  background: var(--primary-dim);
}

.radialog-feature > .mdi {
  font-size: 22px;
  color: var(--secondary-color, #F08000);
  flex-shrink: 0;
  margin-top: 1px;
}

.radialog-feature > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.radialog-feature strong {
  font-size: 0.78rem;
  color: #e8e8e8;
  letter-spacing: 0.4px;
}

.radialog-feature span {
  font-size: 0.68rem;
  color: var(--text-medium, #aaa);
  letter-spacing: 0.3px;
  line-height: 1.4;
}

/* Privacy areas callout */
.radialog-privacy {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--accent-dim);
  border: 1px solid rgba(192, 132, 252, 0.25);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  font-size: 0.78rem;
  letter-spacing: 0.4px;
  color: #d4d4d4;
  line-height: 1.5;
}

.radialog-privacy > .mdi {
  font-size: 24px;
  color: var(--accent-color);
  flex-shrink: 0;
  margin-top: 2px;
}

.radialog-privacy strong {
  color: var(--accent-color);
}

/* Specs */
.radialog-specs {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
}

.radialog-specs-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--secondary-color, #F08000);
  margin-bottom: 12px;
  font-weight: 600;
}

.radialog-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}

@media (max-width: 480px) {
  .radialog-specs-grid {
    grid-template-columns: 1fr;
  }
}

.radialog-specs-grid > div {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 0.72rem;
  letter-spacing: 0.3px;
  color: #d4d4d4;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.radialog-specs-grid > div:nth-last-child(-n+2) {
  border-bottom: none;
}

.radialog-spec-label {
  color: var(--text-medium, #aaa);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* Handmade callout */
.radialog-handmade {
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.6px;
  color: var(--text-medium, #aaa);
  padding: 4px 0;
}

.radialog-handmade .mdi {
  color: var(--primary-color, #FFE030);
  font-size: 16px;
  vertical-align: middle;
  margin-right: 4px;
}

/* CTA */
.radialog-cta {
  text-align: center;
  padding: 4px 0 0;
}

.radialog-cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}

@media (max-width: 480px) {
  .radialog-cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Shared button base */
.radialog-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-lg);
  padding: 14px 24px;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: filter 0.18s ease, transform 0.15s ease, box-shadow 0.18s ease;
}

.radialog-btn .mdi {
  font-size: 1.1rem;
}

.radialog-btn:hover,
.radialog-btn:focus-visible {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.radialog-btn:active {
  transform: translateY(0) scale(0.98);
}

/* GitHub / Build Your Own — secondary style */
.radialog-btn-github {
  background: transparent;
  color: var(--secondary-color, #F08000);
  border: 1px solid var(--secondary-color, #F08000);
  box-shadow:
    0 0 0 1px rgba(240, 128, 0, 0.15),
    0 3px 12px -2px rgba(0, 0, 0, 0.5);
}

.radialog-btn-github:hover,
.radialog-btn-github:focus-visible {
  box-shadow:
    0 0 0 1px rgba(240, 128, 0, 0.3),
    0 6px 20px -3px rgba(240, 128, 0, 0.15);
}

/* Buy Pre-Assembled — primary style */
.radialog-btn-buy {
  background: var(--primary-color, #FFE030);
  color: var(--text-on-primary, #000);
  border: none;
  box-shadow:
    0 0 0 1px rgba(255, 224, 48, 0.25),
    0 3px 12px -2px rgba(0, 0, 0, 0.7);
}

.radialog-btn-buy:hover,
.radialog-btn-buy:focus-visible {
  box-shadow:
    0 0 0 1px rgba(255, 224, 48, 0.4),
    0 6px 20px -3px rgba(255, 224, 48, 0.2);
}

.radialog-btn-buy:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  filter: none;
  transform: none;
}

/* Focus ring */
#radialog-modal-root :focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(192, 132, 252, 0.4);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  #radialog-shell,
  #radialog-backdrop,
  #radialog-modal-root {
    transition: none !important;
  }
  .radialog-btn,
  .radialog-close-btn {
    transition: none !important;
  }
}