/* ============================================
   SOLVE FOR WHY — Global Styles
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Prism palette — drawn from the logo */
  --prism-red:    #E94B3C;
  --prism-orange: #F0A030;
  --prism-yellow: #F7D060;
  --prism-green:  #4CAF7D;
  --prism-blue:   #3B82C4;
  --prism-indigo: #5B5EA6;
  --prism-violet: #9B59B6;

  /* Core brand */
  --s4y-dark:     #1A1A2E;
  --s4y-navy:     #16213E;
  --s4y-mid:      #0F3460;
  --s4y-accent:   #3B82C4;
  --s4y-light:    #F8F9FA;
  --s4y-white:    #FFFFFF;
  --s4y-text:     #2D3436;
  --s4y-text-light: #636E72;
  --s4y-border:   #DFE6E9;

  /* Typography — Fraunces + DM Sans */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'DM Sans', 'Segoe UI', sans-serif;

  /* Spacing */
  --section-pad: 3.5rem 2rem;
  --container-max: 1140px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--s4y-text);
  background: var(--s4y-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.text-center p,
.cta-section p,
.page-header p,
.hero p,
.bg-dark p { text-align: center; }

img { max-width: 100%; display: block; }
a { color: var(--s4y-accent); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--prism-blue); }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 2rem; }

/* --- Prism gradient bar (top of every page) --- */
.prism-bar {
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--prism-red),
    var(--prism-orange),
    var(--prism-yellow),
    var(--prism-green),
    var(--prism-blue),
    var(--prism-indigo),
    var(--prism-violet)
  );
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
}

/* --- Navigation --- */
.site-nav {
  position: fixed;
  top: 4px;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--s4y-border);
  transition: box-shadow 0.3s var(--ease);
}
.site-nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--s4y-dark);
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--s4y-accent); }

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-family: var(--font-display);
  color: var(--s4y-text);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--s4y-accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--s4y-accent); }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--s4y-dark);
  margin: 5px 0;
  transition: all 0.3s var(--ease);
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--s4y-white);
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    gap: 1.5rem;
    transform: translateY(-120%);
    transition: transform 0.3s var(--ease);
    border-bottom: 1px solid var(--s4y-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  }
  .nav-links.open { transform: translateY(0); }
}

/* --- Typography --- */
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--s4y-dark); line-height: 1.25; }
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.3rem, 3vw, 1.6rem); }
h4 { font-size: 1.1rem; }

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--s4y-accent);
  margin-bottom: 0.75rem;
}

.lead {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--s4y-text-light);
  max-width: 680px;
}

/* --- Sections --- */
section { padding: var(--section-pad); }
.bg-light { background: var(--s4y-light); }
.bg-dark { background: var(--s4y-dark); color: var(--s4y-white); }
.bg-dark h2, .bg-dark h3, .bg-dark h4 { color: var(--s4y-white); }
.bg-dark .section-label { color: var(--prism-yellow); }
.bg-dark .lead { color: rgba(255,255,255,0.75); }

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.25s var(--ease);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--s4y-accent);
  color: var(--s4y-white);
}
.btn-primary:hover {
  background: var(--s4y-mid);
  color: var(--s4y-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59, 130, 196, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--s4y-accent);
  border: 2px solid var(--s4y-accent);
}
.btn-outline:hover {
  background: var(--s4y-accent);
  color: var(--s4y-white);
}

.btn-white {
  background: var(--s4y-white);
  color: var(--s4y-dark);
}
.btn-white:hover {
  background: var(--s4y-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

/* --- Cards --- */
.card {
  background: var(--s4y-white);
  border-radius: 12px;
  padding: 2.5rem;
  border: 1px solid var(--s4y-border);
  transition: all 0.3s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  border-color: transparent;
}

/* --- Brand Tiles --- */
.brand-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 2rem;
  margin-left: calc(-1 * (100vw - 100%) / 2);
  margin-right: calc(-1 * (100vw - 100%) / 2);
  width: 100vw;
}
.brand-tile {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  padding: 0;
  background: var(--s4y-white);
  border: 1px solid var(--s4y-border);
  margin: -0.5px;
  overflow: hidden;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.4s var(--ease);
}
.brand-tile img {
  max-width: 100%;
  max-height: 100%;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: all 0.4s var(--ease);
}
.brand-tile-desc {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: rgba(26, 26, 46, 0.88);
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  line-height: 1.7;
  text-align: center;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.brand-tile:hover img {
  transform: scale(0.92);
  opacity: 0.1;
}
.brand-tile:hover .brand-tile-desc {
  opacity: 1;
}
.brand-tile:first-child { border-radius: 16px 0 0 16px; }
.brand-tile:last-child { border-radius: 0 16px 16px 0; }
@media (max-width: 1050px) {
  .brand-strip { grid-template-columns: repeat(3, 1fr); }
  .brand-tile { border-radius: 0; }
  .brand-tile:first-child { border-radius: 16px 0 0 0; }
  .brand-tile:nth-child(3) { border-radius: 0 16px 0 0; }
  .brand-tile:nth-child(4) { border-radius: 0 0 0 16px; }
  .brand-tile:last-child { border-radius: 0 0 16px 0; }
}
@media (max-width: 768px) {
  .brand-strip { grid-template-columns: repeat(2, 1fr); }
  .brand-tile { border-radius: 0 !important; }
  .brand-tile:last-child { border-radius: 0 0 16px 16px; }
}

/* --- Grid Layouts --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
}

/* --- Prism "Why" badges --- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.why-badge {
  text-align: center;
  padding: 1.5rem 1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--s4y-white);
  transition: transform 0.2s var(--ease);
}
.why-badge:hover { transform: scale(1.05); }
.why-badge.red    { background: var(--prism-red); }
.why-badge.orange { background: var(--prism-orange); color: var(--s4y-dark); }
.why-badge.yellow { background: var(--prism-yellow); color: var(--s4y-dark); }
.why-badge.green  { background: var(--prism-green); }
.why-badge.blue   { background: var(--prism-blue); }
.why-badge.indigo { background: var(--prism-indigo); }
.why-badge.violet { background: var(--prism-violet); }

/* --- Hero --- */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--s4y-dark) 0%, var(--s4y-navy) 50%, var(--s4y-mid) 100%);
  color: var(--s4y-white);
}
.hero h1 { color: var(--s4y-white); margin-bottom: 1.5rem; }
.hero .lead { color: rgba(255,255,255,0.8); margin: 0 auto 1.5rem; }

.hero-tagline {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-style: italic;
  color: var(--prism-yellow);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

/* --- Page Header (for inner pages) --- */
.page-header {
  padding: 6rem 2rem 3rem;
  text-align: center;
  background: linear-gradient(135deg, var(--s4y-dark) 0%, var(--s4y-mid) 100%);
  color: var(--s4y-white);
}
.page-header h1 { color: var(--s4y-white); margin-bottom: 1rem; }
.page-header .lead { margin: 0 auto; color: rgba(255,255,255,0.75); }

/* --- Brand Cards --- */
.brand-card {
  background: var(--s4y-white);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--s4y-border);
  transition: all 0.3s var(--ease);
}
.brand-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.1);
  border-color: transparent;
}
.brand-card-header {
  padding: 3rem 2.5rem 2rem;
  position: relative;
}
.brand-card-body { padding: 0 2.5rem 2.5rem; }
.brand-card h3 { margin-bottom: 0.75rem; }
.brand-card .brand-tagline {
  font-style: italic;
  color: var(--s4y-text-light);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.brand-card p { font-size: 0.95rem; line-height: 1.7; color: var(--s4y-text-light); }

.brand-status {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}
.brand-status.live { background: #E8F5E9; color: #2E7D32; }
.brand-status.launching { background: #FFF3E0; color: #E65100; }
.brand-status.building { background: #E3F2FD; color: #1565C0; }

/* Brand accent strips */
.brand-accent-tru   { border-top: 4px solid #C0392B; }
.brand-accent-spot  { border-top: 4px solid var(--prism-green); }
.brand-accent-sloth { border-top: 4px solid var(--prism-violet); }
.brand-accent-knowte { border-top: 4px solid var(--prism-blue); }

/* --- Platform How-It-Works Steps --- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  counter-reset: step;
  margin-top: 3rem;
}
.step {
  text-align: center;
  padding: 2rem 1.5rem;
  position: relative;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--s4y-accent);
  color: var(--s4y-white);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 auto 1.25rem;
}
.step h4 { margin-bottom: 0.75rem; }
.step p { font-size: 0.9rem; color: var(--s4y-text-light); }

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  text-align: center;
  padding: 3rem 0;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--prism-yellow);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  padding: 3rem 2rem;
  background: linear-gradient(135deg, var(--s4y-dark), var(--s4y-mid));
  color: var(--s4y-white);
}
.cta-section h2 { color: var(--s4y-white); margin-bottom: 1rem; }
.cta-section .lead { color: rgba(255,255,255,0.75); margin: 0 auto 1.25rem; }
.cta-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* --- Footer --- */
.site-footer {
  background: var(--s4y-dark);
  color: rgba(255,255,255,0.6);
  padding: 2rem 2rem 1.5rem;
  text-align: center;
  font-size: 0.85rem;
}
.site-footer p { text-align: center; }
.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
.footer-links { list-style: none; display: flex; gap: 2rem; justify-content: center; margin-bottom: 1rem; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,0.6); }
.footer-links a:hover { color: var(--s4y-white); }
.footer-tagline {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--prism-yellow);
  margin-top: 1rem;
  font-size: clamp(1rem, 2vw, 1.2rem);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Contact Form --- */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
}
.form-group { margin-bottom: 1.5rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--s4y-text);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--s4y-border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s var(--ease);
  background: var(--s4y-white);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--s4y-accent);
  box-shadow: 0 0 0 3px rgba(59,130,196,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }