/* ==========================================================
   Ambiance iQ · Prosper Forum Landing
   Vanilla CSS3 — tokens, Flexbox, Grid. No framework.
   ========================================================== */

:root {
  /* Brand colors — pulled from Ambiance iQ logo */
  --aiq-green-dark: #1f6f3d;
  --aiq-green:      #2e8b4f;
  --aiq-green-lite: #4fa96f;
  --aiq-orange:     #f0851f;
  --aiq-orange-lite:#f8a256;
  --aiq-ink:        #1a1a1a;
  --aiq-ink-soft:   #333;
  --aiq-gray-700:   #555;
  --aiq-gray-500:   #7a7a7a;
  --aiq-gray-300:   #cfcfcf;
  --aiq-gray-100:   #f2f2f0;
  --aiq-cream:      #faf7f2;
  --aiq-white:      #ffffff;

  /* Prosper accent (from their icon) */
  --prosper-orange: #f39323;

  /* Semantic */
  --bg:             var(--aiq-cream);
  --bg-alt:         var(--aiq-white);
  --bg-dark:        #14261a;   /* deep forest, echoes AIQ green */
  --text:           var(--aiq-ink);
  --text-soft:      var(--aiq-gray-700);
  --text-inverse:   #f4efe6;
  --border:         #e3ded4;
  --accent:         var(--aiq-orange);
  --accent-hover:   #d97315;

  /* Type */
  --font-display: 'Cabinet Grotesk', system-ui, -apple-system, sans-serif;
  --font-body:    'Source Sans 3', system-ui, -apple-system, sans-serif;

  /* Layout */
  --container:  1160px;
  --radius-sm:  8px;
  --radius:     14px;
  --radius-lg:  22px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(20,20,20,.06), 0 2px 6px rgba(20,20,20,.04);
  --shadow:    0 6px 22px rgba(20,20,20,.08), 0 2px 6px rgba(20,20,20,.05);
  --shadow-lg: 0 24px 48px rgba(20,20,20,.12), 0 6px 14px rgba(20,20,20,.06);

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
button { font: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 0.4em;
  color: var(--text);
}

h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }

p { margin: 0 0 1em; }
strong { font-weight: 700; }
em { font-style: italic; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aiq-green);
  margin: 0 0 0.9em;
}
.eyebrow-light { color: var(--aiq-orange); }

/* ==========================================================
   HEADER
   ========================================================== */
.site-header {
  background: var(--aiq-white);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(255,255,255,0.92);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
}
.brand img {
  height: 68px; width: auto;
}
.sponsor-lockup {
  display: flex; flex-direction: column; align-items: flex-end;
  text-align: right;
}
.sponsor-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aiq-gray-500);
  margin-bottom: 4px;
}
.sponsor-mark {
  display: flex; align-items: center; gap: 10px;
}
.sponsor-mark img { height: 34px; width: auto; }
.sponsor-name {
  display: flex; flex-direction: column; line-height: 1;
  font-family: var(--font-display);
}
.sponsor-name-1 {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--prosper-orange);
  letter-spacing: 0.02em;
}
.sponsor-name-2 {
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--aiq-ink);
  margin-top: 3px;
}

/* ==========================================================
   HERO
   ========================================================== */
.hero {
  padding: 56px 0 72px;
  background:
    radial-gradient(1200px 500px at 15% -10%, rgba(46,139,79,.10), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(240,133,31,.10), transparent 60%),
    var(--bg);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: start;
}
.hero-copy .eyebrow { color: var(--aiq-orange); }
.hero-copy h1 {
  margin-bottom: 20px;
}
.lede {
  font-size: 1.18rem;
  color: var(--aiq-ink-soft);
  line-height: 1.5;
  max-width: 34ch;
}
.prize {
  background: linear-gradient(135deg, rgba(240,133,31,.12), rgba(46,139,79,.10));
  border: 1px solid rgba(240,133,31,.28);
  border-radius: var(--radius);
  padding: 16px 18px;
  color: var(--aiq-ink-soft);
  font-size: 0.98rem;
  margin-top: 24px;
  max-width: 44ch;
}
.prize strong { color: var(--aiq-ink); }

/* ---- Form card ---- */
.hero-form {
  background: var(--aiq-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 30px 30px 26px;
  border: 1px solid var(--border);
  position: relative;
}
#entry-form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-weight: 600;
  font-size: 0.86rem;
  color: var(--aiq-ink);
  letter-spacing: 0.01em;
}
.field input {
  font: inherit;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--aiq-white);
  color: var(--text);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
  width: 100%;
}
.field input::placeholder { color: var(--aiq-gray-500); }
.field input:focus {
  outline: none;
  border-color: var(--aiq-orange);
  box-shadow: 0 0 0 3px rgba(240,133,31,.18);
}
.field input:invalid:not(:placeholder-shown) {
  border-color: #c94a2f;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
  padding: 14px 22px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform .12s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease);
  text-align: center;
  text-decoration: none;
}
.btn-primary {
  background: var(--aiq-orange);
  color: white;
  box-shadow: 0 4px 14px rgba(240,133,31,.35);
}
.btn-primary:hover { background: var(--accent-hover); color: white; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.7; cursor: wait; }

.btn-secondary {
  background: transparent;
  color: var(--aiq-ink);
  border: 1.5px solid var(--aiq-ink);
  padding: 12px 18px;
}
.btn-secondary:hover { background: var(--aiq-ink); color: white; }

.btn-large {
  padding: 18px 30px; font-size: 1.1rem;
}

/* Spinner (hidden by default, shown when submitting) */
.btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: none;
}
.btn.is-loading .btn-spinner { display: inline-block; }
.btn.is-loading .btn-label { opacity: 0.85; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-fine {
  font-size: 0.78rem;
  color: var(--aiq-gray-500);
  margin: 6px 0 0;
  line-height: 1.45;
}
.form-error {
  color: #c94a2f;
  background: #fdecea;
  border: 1px solid #f5c2b9;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin: 4px 0 0;
}

/* ---- Success state ---- */
.hero-success {
  text-align: left;
  animation: fadeUp .5s var(--ease);
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.success-check {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--aiq-green), var(--aiq-green-dark));
  color: white;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(46,139,79,.35);
}
.success-check svg { width: 30px; height: 30px; }
.hero-success h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}
.success-song {
  font-size: 1.05rem;
  color: var(--aiq-ink-soft);
  padding: 12px 14px;
  background: var(--aiq-gray-100);
  border-left: 3px solid var(--aiq-orange);
  border-radius: 4px;
  margin-bottom: 18px;
}
.success-body {
  color: var(--aiq-ink-soft);
  font-size: 1.02rem;
  margin-bottom: 22px;
}
.success-cta { display: flex; flex-direction: column; gap: 18px; }
.success-session {
  font-size: 0.95rem;
  color: var(--aiq-ink-soft);
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================
   SECTIONS
   ========================================================== */
.section { padding: 84px 0; }
.section-head { max-width: 720px; margin: 0 0 48px; }
.section-head h2 { margin-bottom: 14px; }
.section-sub {
  color: var(--text-soft);
  font-size: 1.1rem;
  line-height: 1.55;
  margin: 0;
}
.source-note {
  margin-top: 40px;
  font-size: 0.82rem;
  color: var(--aiq-gray-500);
  font-style: italic;
  max-width: 780px;
}

/* ---- Reminiscence bump section ---- */
.section-bump { background: var(--bg-dark); color: var(--text-inverse); }
.section-bump h2 { color: var(--aiq-white); }
.section-bump .eyebrow { color: var(--aiq-orange-lite); }
.two-col {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}
.big-quote {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--aiq-white);
  margin-bottom: 24px;
}
.big-quote strong {
  color: var(--aiq-orange-lite);
  font-weight: 700;
}
.section-bump p { color: rgba(244,239,230,.85); }

.bump-card {
  background: linear-gradient(155deg, rgba(240,133,31,.20), rgba(46,139,79,.16));
  border: 1px solid rgba(240,133,31,.35);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  box-shadow: 0 24px 50px rgba(0,0,0,.35);
}
.bump-card-label {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aiq-orange-lite);
  font-weight: 600;
  margin-bottom: 18px;
}
.bump-card-range {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 6vw, 4.6rem);
  line-height: 1;
  color: var(--aiq-white);
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.bump-card-foot {
  font-size: 0.98rem;
  color: rgba(244,239,230,.75);
}

/* ---- Services section ---- */
.section-services { background: var(--bg-alt); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.service-card-featured {
  background: linear-gradient(160deg, #ffffff 0%, #fbf5ea 100%);
  border-color: rgba(240,133,31,.35);
  box-shadow: 0 8px 24px rgba(240,133,31,.10);
}
.service-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: rgba(46,139,79,.10);
  color: var(--aiq-green-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.service-icon svg { width: 26px; height: 26px; }
.service-card-featured .service-icon {
  background: rgba(240,133,31,.15);
  color: var(--aiq-orange);
}
.service-card h3 { margin-bottom: 8px; color: var(--aiq-ink); }
.service-card p { color: var(--text-soft); font-size: 0.98rem; margin: 0; line-height: 1.55; }

/* ---- Session section ---- */
.section-session {
  background: var(--bg-alt);
  padding-bottom: 60px;
}
.session-card {
  background: linear-gradient(160deg, #ffffff 0%, var(--bg) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 42px 44px;
  box-shadow: var(--shadow);
  max-width: 900px;
  margin: 0 auto;
}
.session-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aiq-orange);
  background: rgba(240,133,31,.10);
  padding: 5px 10px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.session-time {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--aiq-green-dark);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.session-title {
  font-size: clamp(1.6rem, 2.6vw, 2rem);
  margin-bottom: 18px;
}
.session-body {
  color: var(--text-soft);
  font-size: 1.02rem;
  line-height: 1.6;
}
.session-panel {
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 14px;
}
.panel-row { display: grid; grid-template-columns: 140px 1fr; gap: 16px; align-items: start; }
.panel-label {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aiq-gray-500);
  padding-top: 3px;
}
.panel-value { color: var(--text); line-height: 1.5; font-size: 0.98rem; }

.session-break {
  margin-top: 28px;
  padding: 18px 20px;
  background: linear-gradient(135deg, rgba(46,139,79,.10), rgba(240,133,31,.08));
  border-radius: var(--radius);
  border: 1px dashed rgba(46,139,79,.35);
}
.break-time {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--aiq-green-dark);
  margin-bottom: 4px;
}
.break-host {
  color: var(--text-soft);
  font-size: 0.94rem;
}

/* ---- Final CTA ---- */
.section-final {
  background: var(--bg-dark);
  color: var(--text-inverse);
  text-align: center;
  padding: 90px 0;
}
.section-final h2 { color: var(--aiq-white); margin-bottom: 14px; }
.section-final p {
  color: rgba(244,239,230,.8);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto 30px;
}

/* ==========================================================
   FOOTER
   ========================================================== */
.site-footer {
  background: #0e1a12;
  color: rgba(244,239,230,.7);
  padding: 40px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.footer-brand img {
  height: 54px;
  background: rgba(255,255,255,.92);
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 0.82rem;
  color: rgba(244,239,230,.6);
  margin: 0;
}
.footer-sponsor { text-align: center; }
.footer-sponsor-label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244,239,230,.5);
  margin-bottom: 10px;
}
.footer-prosper {
  height: 46px; width: auto; margin: 0 auto;
}
.footer-legal { text-align: right; font-size: 0.84rem; }
.footer-legal p { margin: 0 0 4px; }
.footer-legal a { color: var(--aiq-orange-lite); }
.footer-legal a:hover { color: var(--aiq-orange); }

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (max-width: 900px) {
  .hero { padding: 40px 0 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .lede, .prize { max-width: none; }

  .two-col { grid-template-columns: 1fr; gap: 32px; }
  .services-grid { grid-template-columns: 1fr; }

  .session-card { padding: 32px 26px; }
  .panel-row { grid-template-columns: 1fr; gap: 4px; }

  .footer-inner { grid-template-columns: 1fr; text-align: center; gap: 24px; }
  .footer-legal { text-align: center; }
  .footer-brand img { margin-left: auto; margin-right: auto; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { padding: 0 20px; }
  .section { padding: 60px 0; }

  .header-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
  .brand img { height: 56px; }
  .sponsor-lockup { align-items: flex-start; text-align: left; }

  .hero-form { padding: 22px 20px 20px; border-radius: var(--radius); }
  .session-card { padding: 26px 20px; }
  .bump-card { padding: 30px 22px; }
  .bump-card-range { font-size: 3.4rem; }

  .btn-large { padding: 16px 24px; font-size: 1rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}