/* ========================================================================
   Starblaze.ai — Components
   Buttons, fields, header, hero, contact panel, footer, cards, badges.
   Depends on colors_and_type.css for tokens.
   ======================================================================== */

/* ------------------------------------------------------------------------
   Layout helpers
   ------------------------------------------------------------------------ */
.sb-container { max-width: var(--container-wide); margin: 0 auto; padding-inline: var(--gutter); }
.sb-stack-1 { display: flex; flex-direction: column; gap: var(--space-1); }
.sb-stack-2 { display: flex; flex-direction: column; gap: var(--space-2); }
.sb-stack-3 { display: flex; flex-direction: column; gap: var(--space-3); }
.sb-stack-4 { display: flex; flex-direction: column; gap: var(--space-4); }
.sb-stack-5 { display: flex; flex-direction: column; gap: var(--space-5); }
.sb-stack-6 { display: flex; flex-direction: column; gap: var(--space-6); }
.sb-row     { display: flex; align-items: center; gap: var(--space-3); }

/* ------------------------------------------------------------------------
   Cosmic backdrop: deep-space + nebula + starfield + grain
   Apply to body or to a full-bleed section.
   ------------------------------------------------------------------------ */
.sb-cosmos {
  position: relative;
  background-color: var(--bg-canvas);
  background-image: var(--gradient-nebula);
  isolation: isolate;
}
.sb-cosmos::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 28%, rgba(245,248,255,0.9), transparent 60%),
    radial-gradient(1.2px 1.2px at 24% 72%, rgba(245,248,255,0.7), transparent 60%),
    radial-gradient(1px   1px   at 38% 12%, rgba(245,248,255,0.65), transparent 60%),
    radial-gradient(1.4px 1.4px at 52% 48%, rgba(245,248,255,0.85), transparent 60%),
    radial-gradient(1px   1px   at 64% 84%, rgba(245,248,255,0.55), transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 22%, rgba(245,248,255,0.7), transparent 60%),
    radial-gradient(1px   1px   at 88% 60%, rgba(245,248,255,0.5), transparent 60%),
    radial-gradient(1.6px 1.6px at 92% 92%, rgba(245,248,255,0.85), transparent 60%),
    radial-gradient(1px   1px   at 6%  88%, rgba(79,195,247,0.7),  transparent 60%),
    radial-gradient(1px   1px   at 70% 8%,  rgba(255,122,24,0.65), transparent 60%);
  background-size: 100% 100%;
  pointer-events: none;
  z-index: 0;
  animation: sb-twinkle 6s ease-in-out infinite;
}
.sb-cosmos::after {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");
  opacity: 0.04;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 0;
}
.sb-cosmos > * { position: relative; z-index: 1; }

@keyframes sb-twinkle {
  0%, 100% { opacity: 0.85; }
  50%      { opacity: 0.55; }
}

/* ------------------------------------------------------------------------
   BUTTONS
   Variants: primary (gradient + glow on hover), secondary (glass + border),
   ghost (text + underline-glow). Mono label, sentence case.
   ------------------------------------------------------------------------ */
.sb-btn {
  --btn-h: 44px;
  height: var(--btn-h);
  padding: 0 var(--space-5);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: 0.01em;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: transform var(--duration-2) var(--ease-standard),
              box-shadow var(--duration-2) var(--ease-standard),
              background  var(--duration-2) var(--ease-standard),
              border-color var(--duration-2) var(--ease-standard),
              color       var(--duration-2) var(--ease-standard);
}
.sb-btn:focus-visible {
  outline: none;
  box-shadow: var(--glow-signal-md);
}
.sb-btn[disabled],
.sb-btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Primary — signature gradient. Glow appears on hover (earned). */
.sb-btn--primary {
  position: relative;
  background: var(--gradient-blaze);
  color: var(--star-white);
  box-shadow: var(--depth-2);
}
.sb-btn--primary::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,0.18), rgba(255,255,255,0));
  pointer-events: none;
}
.sb-btn--primary:hover {
  box-shadow: var(--glow-mixed), var(--depth-2);
  transform: translateY(-1px);
}
.sb-btn--primary:active {
  transform: translateY(0);
  box-shadow: var(--depth-1);
}

/* Secondary — glass surface with signal border. */
.sb-btn--secondary {
  background: var(--bg-glass);
  color: var(--fg-1);
  border-color: var(--border-default);
  backdrop-filter: blur(10px);
}
.sb-btn--secondary:hover {
  border-color: var(--border-strong);
  background: var(--bg-glass-strong);
  color: var(--blue-200);
}
.sb-btn--secondary:active {
  transform: translateY(0);
  background: rgba(10, 27, 46, 0.9);
}

/* Ghost — minimal, underline-on-hover. */
.sb-btn--ghost {
  background: transparent;
  color: var(--fg-2);
  padding-inline: var(--space-3);
}
.sb-btn--ghost:hover {
  color: var(--blue-200);
  background: rgba(79, 195, 247, 0.06);
}

/* Sizes */
.sb-btn--sm { --btn-h: 36px; padding: 0 var(--space-4); font-size: var(--text-xs); }
.sb-btn--lg { --btn-h: 56px; padding: 0 var(--space-6); font-size: var(--text-md); border-radius: var(--radius-lg); }

/* ------------------------------------------------------------------------
   FORM INPUT
   ------------------------------------------------------------------------ */
.sb-field { display: flex; flex-direction: column; gap: var(--space-2); }

.sb-label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--fg-3);
}

.sb-input,
.sb-textarea {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-4);
  background: rgba(11, 14, 20, 0.55);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--fg-1);
  font-family: var(--font-body);
  font-size: var(--text-md);
  backdrop-filter: blur(10px);
  transition: border-color var(--duration-2) var(--ease-standard),
              box-shadow   var(--duration-2) var(--ease-standard),
              background   var(--duration-2) var(--ease-standard);
}
.sb-textarea {
  height: auto;
  min-height: 132px;
  padding: var(--space-3) var(--space-4);
  resize: vertical;
  line-height: var(--leading-normal);
}
.sb-input::placeholder,
.sb-textarea::placeholder { color: var(--fg-4); }

.sb-input:hover,
.sb-textarea:hover { border-color: rgba(245,248,255,0.22); }

.sb-input:focus-visible,
.sb-textarea:focus-visible {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: var(--glow-signal-sm);
  background: rgba(11, 14, 20, 0.75);
}

.sb-input[aria-invalid="true"],
.sb-textarea[aria-invalid="true"] {
  border-color: var(--danger);
  box-shadow: 0 0 0 1px rgba(248,113,113,0.45), 0 0 16px rgba(248,113,113,0.25);
}

.sb-hint  { font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--fg-4); }
.sb-error { font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--danger); }

/* ------------------------------------------------------------------------
   NAVIGATION HEADER
   ------------------------------------------------------------------------ */
.sb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--gutter);
  background: linear-gradient(to bottom, rgba(11,14,20,0.85) 0%, rgba(11,14,20,0.55) 70%, rgba(11,14,20,0) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}
.sb-header__brand { display: inline-flex; align-items: center; gap: var(--space-3); }
.sb-header__brand img { height: 40px; width: auto; display: block; }
.sb-header__nav { display: flex; gap: var(--space-6); align-items: center; }
.sb-header__nav a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--fg-2);
  border-bottom: 1px solid transparent;
  padding-block: var(--space-1);
}
.sb-header__nav a:hover { color: var(--fg-1); }
.sb-header__nav a[aria-current="page"] {
  color: var(--fg-1);
  border-bottom-color: var(--blue-500);
}
.sb-header__status {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--fg-3);
}
.sb-header__status::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blaze-500);
  box-shadow: 0 0 10px rgba(255,122,24,0.7);
  animation: sb-pulse 2.2s ease-in-out infinite;
}
@keyframes sb-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.85); }
}

/* ------------------------------------------------------------------------
   HERO
   ------------------------------------------------------------------------ */
.sb-hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  align-items: center;
  padding: clamp(4rem, 12vh, 8rem) var(--gutter);
  overflow: hidden;
  background: var(--gradient-hero-vignette);
}
.sb-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.sb-hero__media img,
.sb-hero__media video {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.55;
  mix-blend-mode: screen;
  filter: saturate(1.05);
}
.sb-hero__media::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 70% 30%, transparent 0%, rgba(11,14,20,0.55) 60%, rgba(11,14,20,0.95) 100%),
    linear-gradient(to bottom, transparent 50%, var(--deep-space) 100%);
}
.sb-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.sb-hero__eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--blue-300);
}
.sb-hero__eyebrow::before {
  content: '';
  width: 28px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-500));
}
.sb-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 8vw, 6rem);
  font-weight: var(--weight-medium);
  line-height: 0.98;
  letter-spacing: -0.025em;
  color: var(--fg-1);
  text-wrap: balance;
}
.sb-hero__title .accent {
  background: var(--gradient-blaze);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sb-hero__lede {
  font-size: clamp(1.1rem, 1.6vw, var(--text-xl));
  color: var(--fg-2);
  max-width: 56ch;
  line-height: var(--leading-relaxed);
}
.sb-hero__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-3); }

.sb-hero__instrument {
  position: absolute;
  right: var(--gutter);
  bottom: var(--gutter);
  z-index: 1;
  display: grid;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--fg-3);
  text-align: right;
}
.sb-hero__instrument span:nth-child(2) { color: var(--blue-400); }

/* ------------------------------------------------------------------------
   CONTACT PANEL (glass card)
   ------------------------------------------------------------------------ */
.sb-panel {
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 3rem);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--depth-3);
  isolation: isolate;
}
.sb-panel::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
    rgba(79,195,247,0.45) 0%,
    transparent 30%,
    transparent 70%,
    rgba(255,122,24,0.35) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.sb-contact { display: grid; gap: var(--space-5); }
.sb-contact__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, var(--text-3xl));
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
}
.sb-contact__lede { color: var(--fg-2); max-width: 56ch; }
.sb-contact__grid { display: grid; gap: var(--space-4); grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .sb-contact__grid { grid-template-columns: 1fr; } }
.sb-contact__row-full { grid-column: 1 / -1; }
.sb-contact__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

/* ------------------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------------------ */
.sb-footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-7) var(--gutter) var(--space-6);
  color: var(--fg-3);
  font-size: var(--text-sm);
  display: grid;
  gap: var(--space-5);
}
.sb-footer__cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-6); }
@media (max-width: 720px) { .sb-footer__cols { grid-template-columns: 1fr 1fr; } }
.sb-footer__col h5 {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--fg-4);
  margin-bottom: var(--space-3);
}
.sb-footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-2); }
.sb-footer__col a { color: var(--fg-2); }
.sb-footer__col a:hover { color: var(--fg-1); }
.sb-footer__legal {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--fg-4);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-subtle);
}

/* ------------------------------------------------------------------------
   CARDS, BADGES, DIVIDERS
   ------------------------------------------------------------------------ */
.sb-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  backdrop-filter: blur(10px);
  box-shadow: var(--depth-2);
  transition: border-color var(--duration-2) var(--ease-standard),
              box-shadow var(--duration-2) var(--ease-standard),
              transform var(--duration-2) var(--ease-standard);
}
.sb-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--glow-signal-sm), var(--depth-3);
}

.sb-badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  height: 22px; padding: 0 var(--space-2);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  background: rgba(79,195,247,0.08);
  color: var(--blue-300);
}
.sb-badge--heat {
  border-color: var(--border-heat);
  background: rgba(255,122,24,0.08);
  color: var(--blaze-300);
}
.sb-badge--neutral {
  border-color: var(--border-default);
  background: rgba(245,248,255,0.04);
  color: var(--fg-3);
}

.sb-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-default), transparent);
  border: 0;
}