/* =========================
   Base / layout
   ========================= */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Open Sans", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background-color: #f9fafb;
  color: #111827;
}

/* =========================
   Tagline color system
   ========================= */

:root {
  --tagline-bg-main: #12325f;
  --tagline-bg-accent: #1d3d73;
  --tagline-border: #071528;

  --tagline-flat-light: #f3f4f6;

  --tagline-text-main: #ffffff;
  --tagline-text-sub: #e5e7eb;
  --tagline-text-eyebrow: #9ca3af;
  --tagline-text-note-dark: rgba(249, 250, 251, 0.85);
  --tagline-text-note-light: #4b5563;
}

/* =========================
   Header for the lab page
   ========================= */

.lab-header {
  padding: 1.5rem 1.25rem;
  text-align: center;
  background-color: #0b2340;
  color: #f9fafb;
}

.lab-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

.lab-header p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.9;
}

.lab-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
}

.lab-section + .lab-section {
  margin-top: 2rem;
}

.lab-section h2 {
  font-size: 1.2rem;
  margin: 0 0 0.85rem;
}

/* =========================
   Tagline band base
   ========================= */

.tagline-swatch {
  margin-bottom: 1rem;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.5);
}

.hero-tagline-inner {
  text-align: center;
  padding: 1.75rem 1.5rem;
  max-width: 48rem;
  margin: 0 auto;
}

/* Typography */

.hero-tagline-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--tagline-text-eyebrow);
  margin-bottom: 0.75rem;
}

.hero-tagline-title {
  font-family: "Libre Baskerville", serif;
  font-size: 1.9rem;
  line-height: 1.25;
  color: var(--tagline-text-main);
  margin: 0 0 0.75rem;
}

.hero-tagline-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--tagline-text-sub);
  margin: 0;
}

/* Light text variant for light panel */

.hero-tagline-inner-light {
  text-align: center;
}

.hero-tagline-eyebrow-light {
  color: #6b7280;
}

.hero-tagline-title-light {
  color: #111827;
}

.hero-tagline-text-light {
  color: #374151;
}

/* Notes under each option */

.tagline-note {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--tagline-text-note-dark);
}

.tagline-flat-light-panel .tagline-note {
  color: var(--tagline-text-note-light);
}

/* =========================
   Flat baseline
   ========================= */

.tagline-current {
  background-color: var(--tagline-bg-main);
  border-bottom: 1px solid var(--tagline-border);
}

/* =========================
   Gradient variations
   ========================= */

.tagline-grad-blue {
  background: linear-gradient(
    to bottom,
    var(--tagline-border) 0%,
    var(--tagline-bg-main) 50%,
    var(--tagline-bg-accent) 100%
  );
  border-bottom: 1px solid var(--tagline-border);
}

.tagline-grad-spotlight {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.2), transparent 55%),
    radial-gradient(circle at 0% 100%, rgba(0, 0, 0, 0.18), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(0, 0, 0, 0.18), transparent 55%),
    linear-gradient(to bottom, var(--tagline-bg-main) 0%, var(--tagline-bg-accent) 100%);
  border-bottom: 1px solid var(--tagline-border);
}

/* =========================
   Textured gradient variations – Set 1
   ========================= */

.tagline-texture-grain,
.tagline-texture-linen,
.tagline-texture-stripes {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom,
    var(--tagline-bg-main) 0%,
    var(--tagline-bg-accent) 100%
  );
  border-bottom: 1px solid var(--tagline-border);
}

.tagline-texture-grain::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.02) 0px,
    rgba(255, 255, 255, 0.02) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
}

.tagline-texture-linen::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.03) 0px,
      rgba(255, 255, 255, 0.03) 2px,
      transparent 2px,
      transparent 6px
    ),
    repeating-linear-gradient(
      -45deg,
      rgba(0, 0, 0, 0.03) 0px,
      rgba(0, 0, 0, 0.03) 2px,
      transparent 2px,
      transparent 6px
    );
  pointer-events: none;
}

.tagline-texture-stripes::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.04) 0px,
    rgba(255, 255, 255, 0.04) 3px,
    transparent 3px,
    transparent 9px
  );
  pointer-events: none;
}

/* =========================
   Textured gradient variations – Set 2
   ========================= */

.tagline-texture-paper,
.tagline-texture-dots,
.tagline-texture-horizontal-grain,
.tagline-texture-halo {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom,
    var(--tagline-bg-main) 0%,
    var(--tagline-bg-accent) 100%
  );
  border-bottom: 1px solid var(--tagline-border);
}

.tagline-texture-paper {
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.18), transparent 55%),
    radial-gradient(circle at 0% 100%, rgba(0, 0, 0, 0.22), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(0, 0, 0, 0.22), transparent 55%),
    linear-gradient(to bottom, var(--tagline-bg-main) 0%, var(--tagline-bg-accent) 100%);
}

.tagline-texture-dots::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.04) 0, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 8px 8px;
  pointer-events: none;
}

.tagline-texture-horizontal-grain::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.03) 0px,
    rgba(255, 255, 255, 0.03) 1px,
    transparent 1px,
    transparent 4px
  );
  pointer-events: none;
}

.tagline-texture-halo::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.25), transparent 60%);
  mix-blend-mode: screen;
  pointer-events: none;
}

/* =========================
   Extra textures – Options O–R
   ========================= */

.tagline-texture-waves,
.tagline-texture-grid,
.tagline-texture-mesh,
.tagline-texture-hatch {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom,
    var(--tagline-bg-main) 0%,
    var(--tagline-bg-accent) 100%
  );
  border-bottom: 1px solid var(--tagline-border);
}

/* Option O – soft wave bands */
.tagline-texture-waves::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.04) 0px,
      rgba(255, 255, 255, 0.04) 2px,
      transparent 2px,
      transparent 10px
    );
  opacity: 0.8;
  transform: translate3d(0, 0, 0);
  pointer-events: none;
}

/* Option P – subtle checker/grid */
.tagline-texture-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px
    );
  background-size: 12px 12px;
  pointer-events: none;
}

/* Option Q – mesh / blob glow */
.tagline-texture-mesh::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.22), transparent 55%),
    radial-gradient(circle at 80% 60%, rgba(15, 118, 110, 0.35), transparent 55%),
    radial-gradient(circle at 40% 100%, rgba(147, 51, 234, 0.32), transparent 55%);
  mix-blend-mode: screen;
  pointer-events: none;
}

/* Option R – diagonal hatch */
.tagline-texture-hatch::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.035) 0px,
    rgba(255, 255, 255, 0.035) 1px,
    transparent 1px,
    transparent 6px
  );
  pointer-events: none;
}