/* OLDCARTS Consulting — Brand Stylesheet
   Black Diamond Palette | Sophisticated | March 2026 */

/* ─── FONTS ─── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap');

/* ─── TOKENS ─── */
:root {
  --black:      #0D0D0D;
  --warm-white: #F5F0E8;
  --eggplant:   #4A2040;
  --gold:       #C8A96E;
  --ash:        #8C8C8C;
  --white:      #FFFFFF;
  --section-pad: 6rem 2rem;
  --max-w: 1100px;
  --radius: 2px;
  --transition: 0.25s ease;
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--warm-white);
  color: var(--black);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ─── TYPOGRAPHY ─── */
h1, h2, h3, h4 { font-family: 'Playfair Display', serif; line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 600; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; font-family: 'Inter', sans-serif; letter-spacing: 0.05em; text-transform: uppercase; }
p { font-size: 1rem; font-weight: 300; max-width: 65ch; }

/* ─── LAYOUT HELPERS ─── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.section { padding: var(--section-pad); }
.section--dark { background: var(--black); color: var(--warm-white); }
.section--eggplant { background: var(--eggplant); color: var(--warm-white); }
.section--gold { background: var(--gold); color: var(--black); }
.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.text-ash { color: var(--ash); }

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(13,13,13,0.96);
  backdrop-filter: blur(8px);
  padding: 1.25rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid rgba(200,169,110,0.2);
}
.nav-brand {
  display: flex; align-items: center; gap: 0.75rem;
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--warm-white);
  letter-spacing: 0.02em;
}
.nav-brand img { width: 36px; height: 36px; object-fit: contain; filter: brightness(0) invert(1); }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  color: rgba(245,240,232,0.75);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-cta {
  background: var(--gold);
  color: var(--black);
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background var(--transition), transform var(--transition);
}
.nav-cta:hover { background: #d4b87a; transform: translateY(-1px); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  background: var(--black);
  display: flex; align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(74,32,64,0.3) 0%, rgba(13,13,13,0.95) 60%);
  z-index: 1;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1600&q=80');
  background-size: cover; background-position: center;
  opacity: 0.35;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: var(--max-w); margin: 0 auto; padding: 4rem 2rem;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.hero h1 { color: var(--warm-white); margin-bottom: 1.5rem; max-width: 14ch; }
.hero h1 em { color: var(--gold); font-style: italic; }
.hero-sub {
  font-size: 1.1rem;
  color: rgba(245,240,232,0.7);
  max-width: 55ch;
  margin-bottom: 2.5rem;
  font-weight: 300;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-primary { background: var(--gold); color: var(--black); }
.btn-primary:hover { background: #d4b87a; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200,169,110,0.3); }
.btn-outline { border: 1px solid rgba(245,240,232,0.4); color: var(--warm-white); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }

/* ─── MNEMONIC SECTION ─── */
.mnemonic { padding: var(--section-pad); background: var(--black); color: var(--warm-white); }
.mnemonic .container { max-width: var(--max-w); }
.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.mnemonic h2 { margin-bottom: 1rem; }
.mnemonic .intro { color: rgba(245,240,232,0.7); margin-bottom: 3rem; max-width: 60ch; }
.mnemonic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: rgba(200,169,110,0.15);
  border: 1px solid rgba(200,169,110,0.15);
}
.mnemonic-item {
  background: #111;
  padding: 1.75rem;
  transition: background var(--transition);
}
.mnemonic-item:hover { background: #1a1a1a; }
.mnemonic-letter {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.mnemonic-medical {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ash);
  margin-bottom: 0.75rem;
}
.mnemonic-business {
  font-size: 0.95rem;
  color: rgba(245,240,232,0.85);
  font-weight: 300;
}
.mnemonic-close {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(200,169,110,0.2);
  color: rgba(245,240,232,0.6);
  font-style: italic;
  font-family: 'Playfair Display', serif;
  font-size: 1.05rem;
}

/* ─── SERVICES ─── */
.services { padding: var(--section-pad); background: var(--warm-white); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}
.service-card {
  background: var(--white);
  padding: 2.5rem;
  border-top: 3px solid var(--gold);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 16px 48px rgba(13,13,13,0.1); }
.service-card .icon {
  width: 40px; height: 40px;
  background: var(--black);
  margin-bottom: 1.5rem;
  display: flex; align-items: center; justify-content: center;
}
.service-card .icon svg { width: 20px; height: 20px; stroke: var(--gold); fill: none; }
.service-card h3 { margin-bottom: 1rem; font-size: 1.25rem; }
.service-card p { color: #444; font-size: 0.95rem; }

/* ─── ABOUT STRIP ─── */
.about-strip {
  padding: var(--section-pad);
  background: var(--eggplant);
  color: var(--warm-white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-strip h2 { margin-bottom: 1.5rem; }
.about-strip p { color: rgba(245,240,232,0.8); margin-bottom: 1.25rem; }
.about-strip .stat-row { display: flex; gap: 3rem; margin-top: 2rem; }
.stat { }
.stat-number { font-family: 'Playfair Display', serif; font-size: 2.5rem; color: var(--gold); line-height: 1; }
.stat-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(245,240,232,0.6); margin-top: 0.25rem; }

/* ─── CREDIBILITY BAR ─── */
.credibility {
  padding: 3rem 2rem;
  background: var(--black);
  border-top: 1px solid rgba(200,169,110,0.15);
  border-bottom: 1px solid rgba(200,169,110,0.15);
}
.cred-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 2rem;
  align-items: center; justify-content: center;
}
.cred-item {
  display: flex; align-items: center; gap: 0.75rem;
  color: rgba(245,240,232,0.6);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}
.cred-item::before { content: '◆'; color: var(--gold); font-size: 0.6rem; }

/* ─── CONTACT CTA ─── */
.contact-cta {
  padding: var(--section-pad);
  background: var(--warm-white);
  text-align: center;
}
.contact-cta h2 { margin-bottom: 1rem; }
.contact-cta p { color: var(--ash); margin: 0 auto 2rem; }
.contact-details {
  display: flex; gap: 2rem; justify-content: center;
  flex-wrap: wrap; margin-top: 1.5rem;
}
.contact-detail {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--black);
}
.contact-detail strong { color: var(--eggplant); }

/* ─── FULL CONTACT FORM ─── */
.contact-section { padding: var(--section-pad); background: var(--black); color: var(--warm-white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 5rem; align-items: start; max-width: var(--max-w); margin: 0 auto; }
.contact-info h2 { margin-bottom: 1.5rem; }
.contact-info p { color: rgba(245,240,232,0.7); margin-bottom: 2rem; }
.contact-info-item { display: flex; flex-direction: column; margin-bottom: 1.5rem; }
.contact-info-item span { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gold); margin-bottom: 0.25rem; }
.contact-info-item a { color: var(--warm-white); font-size: 1rem; transition: color var(--transition); }
.contact-info-item a:hover { color: var(--gold); }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gold); margin-bottom: 0.5rem; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(245,240,232,0.06);
  border: 1px solid rgba(245,240,232,0.15);
  color: var(--warm-white);
  padding: 0.875rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--gold); }
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group select option { background: var(--black); color: var(--warm-white); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.btn-submit {
  background: var(--gold);
  color: var(--black);
  padding: 1rem 2.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  width: 100%;
  margin-top: 0.5rem;
}
.btn-submit:hover { background: #d4b87a; transform: translateY(-2px); }

/* ─── SERVICES PAGE ─── */
.page-hero {
  padding: 10rem 2rem 5rem;
  background: var(--black);
  color: var(--warm-white);
}
.page-hero h1 { margin-bottom: 1rem; }
.page-hero p { color: rgba(245,240,232,0.7); font-size: 1.1rem; max-width: 55ch; }
.services-full { padding: var(--section-pad); }
.service-block { margin-bottom: 5rem; padding-bottom: 5rem; border-bottom: 1px solid rgba(13,13,13,0.1); }
.service-block:last-child { border-bottom: none; }
.service-block h2 { margin-bottom: 0.5rem; }
.service-block .tag { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gold); margin-bottom: 1.25rem; display: block; }
.service-block > p { color: #444; margin-bottom: 2rem; font-size: 1.05rem; }
.deliverables { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0.75rem; margin-bottom: 2rem; }
.deliverables li { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; color: #333; }
.deliverables li::before { content: '◆'; color: var(--gold); font-size: 0.55rem; flex-shrink: 0; }
.pricing-table { margin-top: 4rem; background: var(--black); color: var(--warm-white); padding: 3rem; }
.pricing-table h3 { margin-bottom: 2rem; color: var(--gold); font-family: 'Inter', sans-serif; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.15em; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.pricing-tier { border: 1px solid rgba(200,169,110,0.2); padding: 2rem; }
.pricing-tier h4 { color: var(--gold); font-family: 'Playfair Display', serif; font-size: 1.2rem; text-transform: none; letter-spacing: 0; margin-bottom: 0.5rem; }
.pricing-tier .price { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
.pricing-tier p { color: rgba(245,240,232,0.6); font-size: 0.875rem; }

/* ─── ABOUT PAGE ─── */
.about-story { padding: var(--section-pad); }
.about-story .lead { font-size: 1.2rem; font-weight: 300; color: #333; margin-bottom: 2rem; max-width: 70ch; }
.about-story p { color: #444; margin-bottom: 1.25rem; }
.principles { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; margin-top: 4rem; }
.principle { border-left: 3px solid var(--gold); padding-left: 1.5rem; }
.principle h3 { margin-bottom: 0.75rem; font-size: 1.1rem; }
.principle p { color: #555; font-size: 0.95rem; }
.founder-strip {
  padding: var(--section-pad);
  background: var(--black);
  color: var(--warm-white);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
.founder-meta { }
.founder-meta h2 { color: var(--gold); font-size: 1.5rem; margin-bottom: 0.25rem; }
.founder-meta .title { color: var(--ash); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 2rem; }
.founder-creds { list-style: none; }
.founder-creds li { font-size: 0.9rem; color: rgba(245,240,232,0.7); padding: 0.4rem 0; border-bottom: 1px solid rgba(245,240,232,0.08); display: flex; align-items: baseline; gap: 0.5rem; }
.founder-creds li::before { content: '◆'; color: var(--gold); font-size: 0.5rem; flex-shrink: 0; }
.founder-story p { color: rgba(245,240,232,0.75); margin-bottom: 1.25rem; }
.founder-story p:first-child { font-size: 1.1rem; }

/* ─── FOOTER ─── */
footer {
  background: #080808;
  color: rgba(245,240,232,0.5);
  padding: 3rem 2rem;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 2rem;
  align-items: center; justify-content: space-between;
}
.footer-brand { display: flex; align-items: center; gap: 0.75rem; }
.footer-brand img { width: 28px; height: 28px; filter: brightness(0) invert(1); opacity: 0.65; }
.footer-brand span { font-family: 'Playfair Display', serif; font-size: 0.95rem; color: rgba(245,240,232,0.6); }
.footer-links { display: flex; gap: 2rem; list-style: none; }
.footer-links a { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; transition: color var(--transition); }
.footer-links a:hover { color: var(--gold); }
.footer-copy { font-size: 0.75rem; }

/* ─── HAMBURGER (mobile) ─── */
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--warm-white); transition: all var(--transition); }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  :root { --section-pad: 4rem 1.25rem; }
  .hamburger { display: flex; }
  .nav-links, .nav-cta { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: rgba(13,13,13,0.98); padding: 1.5rem 2rem; gap: 1rem; }
  .about-strip { grid-template-columns: 1fr; gap: 2rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .founder-strip { grid-template-columns: 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }
  .about-strip .stat-row { gap: 1.5rem; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}