/* ========================================
   COMPONENTS — Vanguard Digital
   Buttons · Cards · Chips · Badges · Forms · Accordion · Stats
   ======================================== */

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  --btn-bg: transparent;
  --btn-color: var(--color-text);
  --btn-border: transparent;
  --btn-shadow: 0 0 0 0 transparent;

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-variation-settings: var(--geist-mid);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.005em;
  padding: 0.9rem 1.4rem;
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-color);
  cursor: pointer;
  transition: transform 0.22s var(--ease-editorial),
              background-color 0.22s ease,
              color 0.22s ease,
              border-color 0.22s ease,
              box-shadow 0.22s ease;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: var(--btn-shadow);
  isolation: isolate;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%),
    color-mix(in srgb, var(--color-accent) 30%, transparent),
    transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
  pointer-events: none;
}

.btn:hover::after { opacity: 1; }

/* Primary — filled ember, ink text */
.btn-primary {
  --btn-bg: var(--color-accent);
  --btn-color: var(--color-text-invert);
  --btn-border: var(--color-accent);
  --btn-shadow: 0 10px 30px -10px var(--color-accent-glow);
}

.btn-primary:hover {
  --btn-bg: var(--color-accent-soft);
  --btn-border: var(--color-accent-soft);
  transform: translateY(-1px);
  box-shadow: 0 16px 40px -10px var(--color-accent-glow), 0 0 0 4px var(--color-accent-whisper);
}

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

/* Secondary — ghost with hairline */
.btn-outline {
  --btn-bg: transparent;
  --btn-color: var(--color-text-strong);
  --btn-border: var(--color-hairline-strong);
}

.btn-outline:hover {
  --btn-bg: var(--color-accent-whisper);
  --btn-color: var(--color-text);
  --btn-border: var(--color-accent);
  transform: translateY(-1px);
}

/* Ghost — no border */
.btn-ghost {
  --btn-bg: transparent;
  --btn-color: var(--color-text);
  --btn-border: transparent;
  padding-inline: 0;
}

.btn-ghost:hover {
  --btn-color: var(--color-accent-soft);
}

/* Size variants */
.btn-lg {
  padding: 1.05rem 1.8rem;
  font-size: var(--fs-base);
  letter-spacing: -0.01em;
}

.btn-xl {
  padding: 1.2rem 2.2rem;
  font-size: var(--fs-base);
}

.btn-nav {
  padding: 0.6rem 1.1rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
}

/* Button with inline arrow */
.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.btn-arrow .arrow {
  display: inline-block;
  transition: transform 0.25s var(--ease-editorial);
}

.btn-arrow:hover .arrow {
  transform: translateX(4px);
}

/* ========================================
   CARDS
   ======================================== */
.card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: var(--transition-smooth);
  overflow: hidden;
  isolation: isolate;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(var(--spotlight-size) circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    var(--spotlight-color),
    transparent 65%);
  opacity: var(--spotlight-opacity, 0);
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.card > * { position: relative; z-index: 1; }

.card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  --spotlight-opacity: 1;
  box-shadow: var(--shadow-md);
}

.card-sm {
  padding: var(--space-6);
}

.card-muted {
  background: var(--color-surface-raised);
}

/* ========================================
   BADGES / CHIPS
   ======================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 0.9rem;
  background: var(--color-accent-whisper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-strong);
  white-space: nowrap;
}

.badge-accent {
  background: var(--color-accent-subtle);
  border-color: color-mix(in srgb, var(--color-accent) 24%, transparent);
  color: var(--color-accent-text);
}

.badge-outline {
  background: transparent;
  color: var(--color-text-muted);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background: var(--color-gain);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-gain-glow);
  animation: pulse 2.2s ease-in-out infinite;
  flex-shrink: 0;
}

.pulse-dot--ember {
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.82); }
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-accent);
  display: inline-block;
}

.section-title {
  color: var(--color-text-strong);
  margin-bottom: var(--space-5);
  max-width: 18ch;
}

.section-subtitle {
  font-size: var(--fs-lg);
  line-height: 1.48;
  color: var(--color-text-muted);
  max-width: 62ch;
  letter-spacing: -0.008em;
}

/* ========================================
   FORM INPUTS
   ======================================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text-strong);
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.1rem;
  transition: var(--transition-soft);
  outline: none;
  width: 100%;
  letter-spacing: -0.005em;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-hairline-strong);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-surface) 92%, var(--color-accent) 8%);
  box-shadow: 0 0 0 3px var(--color-accent-whisper);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-dim);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.55;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%23A59D8B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.form-select option { background: var(--color-surface); color: var(--color-text-strong); }

.form-error {
  font-size: var(--fs-xs);
  color: var(--color-loss);
  display: none;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
  border-color: var(--color-loss);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-loss) 14%, transparent);
}

.form-group.error .form-error { display: block; }

/* ========================================
   ACCORDION (FAQ)
   ======================================== */
.accordion-item {
  position: relative;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
  transition: var(--transition-soft);
  isolation: isolate;
}

.accordion-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(var(--spotlight-size) circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    var(--spotlight-color),
    transparent 65%);
  opacity: var(--spotlight-opacity, 0);
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.accordion-item:hover {
  border-color: var(--color-border-hover);
  --spotlight-opacity: 1;
}

.accordion-item > * { position: relative; z-index: 1; }

.accordion-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-8);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-variation-settings: var(--geist-mid);
  color: var(--color-text-strong);
  list-style: none;
  letter-spacing: -0.012em;
}

.accordion-item summary::-webkit-details-marker { display: none; }

.accordion-item summary::after {
  content: '';
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  background:
    linear-gradient(var(--color-accent), var(--color-accent)) center/100% 1.5px no-repeat,
    linear-gradient(var(--color-accent), var(--color-accent)) center/1.5px 100% no-repeat;
  transition: transform 0.3s var(--ease-editorial);
}

.accordion-item[open] summary::after {
  transform: rotate(45deg);
  background:
    linear-gradient(var(--color-accent), var(--color-accent)) center/100% 1.5px no-repeat;
}

.accordion-item .accordion-content {
  padding: 0 var(--space-8) var(--space-6);
}

.accordion-item .accordion-content p {
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ========================================
   STAT NUMBERS
   ======================================== */
.stat-value {
  font-family: var(--font-display);
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 80, "wght" 380;
  font-size: var(--fs-2xl);
  color: var(--color-text-strong);
  letter-spacing: -0.04em;
  line-height: 1;
  font-feature-settings: 'tnum' 1;
  display: block;
}

.stat-value--ember { color: var(--color-accent); }

.stat-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: var(--space-3);
}

/* ========================================
   TRUST ITEMS (chips)
   ======================================== */
.trust-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.trust-dot {
  width: 5px;
  height: 5px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px var(--color-accent-glow);
}

/* ========================================
   INLINE CHIP — small key-value
   ======================================== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.8rem;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.chip strong {
  color: var(--color-accent-text);
  font-variation-settings: var(--geist-mid);
}

/* ========================================
   REVEAL ANIMATIONS
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s var(--ease-editorial), transform 0.8s var(--ease-editorial);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal.d-100 { transition-delay: 80ms; }
.reveal.d-200 { transition-delay: 160ms; }
.reveal.d-300 { transition-delay: 240ms; }
.reveal.d-400 { transition-delay: 320ms; }
.reveal.d-500 { transition-delay: 400ms; }
.reveal.d-600 { transition-delay: 480ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ========================================
   GRAIN OVERLAY (global texture)
   ======================================== */
.grain-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  mix-blend-mode: overlay;
}

/* ========================================
   STICKY MOBILE CTA BAR
   ======================================== */
.sticky-cta {
  position: fixed;
  left: var(--space-4);
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 120;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0.8rem 1rem 0.8rem 1.2rem;
  background: color-mix(in srgb, var(--color-surface-raised) 85%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.4s ease, transform 0.4s var(--ease-editorial);
  pointer-events: none;
}

.sticky-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.sticky-cta-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sticky-cta-copy span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.sticky-cta-copy strong {
  font-size: var(--fs-sm);
  color: var(--color-text-strong);
  font-variation-settings: var(--geist-mid);
}

.sticky-cta .btn {
  padding: 0.7rem 1.1rem;
}

@media (max-width: 640px) {
  .sticky-cta { display: flex; }
}