/* ═══════════════════════════════════════════════════════
   KHAN PRIVATE VENTURES — Site Styles
   ═══════════════════════════════════════════════════════ */

:root {
  --color-ivory: #F8F6F1;
  --color-charcoal: #1A1A1A;
  --color-warm-gray: #4A4640;
  --color-muted: #8A857D;
  --color-rule: #D4CFC6;
  --color-deep: #0D0D0D;
  --color-accent: #8B7D6B;
  --color-section-bg: #F0EDE6;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Libre Franklin', 'Helvetica Neue', sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-ivory);
  color: var(--color-charcoal);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ────────────────────────────────────── */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.75rem 4rem;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(248,246,241,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212,207,198,0.4);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-charcoal);
  text-decoration: none;
}

.nav-links { display: flex; gap: 2.5rem; }

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-warm-gray);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-charcoal); }

/* ── HERO ───────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 4rem 6rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.3s forwards;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 300;
  line-height: 1.35;
  color: var(--color-charcoal);
  max-width: 900px;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.5s forwards;
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
}

.hero-metric {
  display: inline-flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-rule);
  opacity: 0;
  animation: fadeUp 0.9s ease 0.8s forwards;
}

.hero-metric .number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 300;
  color: var(--color-charcoal);
  letter-spacing: -0.02em;
  position: relative;
}

.hero-metric .number .asterisk {
  font-size: 1.4rem;
  position: relative;
  top: -1.2rem;
  margin-left: 0.1rem;
  color: var(--color-accent);
}

.hero-metric .label {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 0.04em;
  max-width: 300px;
  line-height: 1.5;
}

/* ── DARK SECTIONS ───────────────────────────── */
.thesis {
  background: var(--color-deep);
  color: #E8E4DC;
  padding: 7rem 4rem;
}

.thesis-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 2rem;
}

.section-label--muted { color: var(--color-muted); }

.thesis-left h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 300;
  line-height: 1.3;
  color: #F0EDE6;
  margin-bottom: 2rem;
}

.thesis-left p {
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.8;
  color: #B0AA9F;
  max-width: 480px;
}

.thesis-right {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding-top: 1rem;
}

.criteria-item {
  border-top: 1px solid rgba(139,125,107,0.25);
  padding-top: 1.5rem;
}

.criteria-item .criteria-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

.criteria-item .criteria-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: #E8E4DC;
  line-height: 1.5;
}

.criteria-item .criteria-detail {
  font-size: 0.85rem;
  font-weight: 300;
  color: #8A857D;
  margin-top: 0.4rem;
  line-height: 1.6;
}

/* ── PARTNERSHIP ────────────────────────────── */
.partnership {
  padding: 7rem 4rem;
  background: var(--color-section-bg);
}

.partnership-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 5rem;
  align-items: start;
}

.partnership-left h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 300;
  line-height: 1.3;
  color: var(--color-charcoal);
}

.partnership-right p {
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--color-warm-gray);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.focus-areas {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
}

.focus-area {
  border-top: 1px solid var(--color-rule);
  padding-top: 1.25rem;
}

.focus-area h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-charcoal);
  margin-bottom: 0.5rem;
}

.focus-area p {
  font-size: 0.82rem;
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* ── CONTACT SECTION ─────────────────────────── */
.contact-section {
  padding: 5rem 4rem;
  background: var(--color-ivory);
  text-align: center;
}

.contact-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 300;
  color: var(--color-charcoal);
  margin-bottom: 1rem;
}

.contact-email {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-charcoal);
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 2px;
  transition: border-color 0.3s ease;
}

.contact-email:hover { border-color: var(--color-charcoal); }

.contact-note {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 0.75rem;
  font-weight: 300;
}

/* ── PAGE HEADER (for inner pages) ───────────── */
.page-header {
  padding: 10rem 4rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 300;
  color: var(--color-charcoal);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.3s forwards;
}

.page-header .subtitle {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--color-muted);
  max-width: 600px;
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.5s forwards;
}

/* ── ABOUT PAGE — PHILOSOPHY BLOCKS ──────────── */
.philosophy {
  padding: 0 4rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.philosophy-block {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  padding: 3.5rem 0;
  border-top: 1px solid var(--color-rule);
  align-items: start;
}

.philosophy-block .block-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.philosophy-block .block-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-rule);
  margin-bottom: 0.5rem;
}

.philosophy-content h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--color-charcoal);
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.philosophy-content p {
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--color-warm-gray);
  margin-bottom: 1.25rem;
  max-width: 640px;
}

/* ── CONTACT PAGE — FORM ─────────────────────── */
.contact-form-section {
  padding: 0 4rem 6rem;
  max-width: 1200px;
  margin: 0 auto;
}

.contact-form-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 5rem;
  align-items: start;
}

.form-sidebar .section-label { margin-bottom: 1.5rem; }

.form-sidebar p {
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.75;
  color: var(--color-warm-gray);
  margin-bottom: 2rem;
}

.form-sidebar .direct-line {
  border-top: 1px solid var(--color-rule);
  padding-top: 1.5rem;
}

.form-sidebar .direct-line .criteria-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.form-sidebar .direct-line a {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-charcoal);
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 1px;
  transition: border-color 0.3s ease;
}

.form-sidebar .direct-line a:hover { border-color: var(--color-charcoal); }

.qualification-form { padding-top: 0.5rem; }

.form-row {
  margin-bottom: 2rem;
}

.form-row label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.6rem;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.85rem 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--color-charcoal);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-rule);
  outline: none;
  transition: border-color 0.3s ease;
  -webkit-appearance: none;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--color-charcoal);
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--color-rule);
  font-weight: 300;
}

.form-row select {
  cursor: pointer;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6' fill='%238A857D'/%3E%3C/svg%3E") no-repeat right center;
  padding-right: 1.5rem;
}

.form-row textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.form-row-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.submit-btn {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ivory);
  background: var(--color-charcoal);
  border: none;
  padding: 1.1rem 3rem;
  cursor: pointer;
  transition: background 0.3s ease;
  margin-top: 1rem;
}

.submit-btn:hover { background: var(--color-warm-gray); }

.form-disclaimer {
  font-size: 0.72rem;
  color: var(--color-muted);
  font-weight: 300;
  margin-top: 1.5rem;
  line-height: 1.6;
  opacity: 0.7;
}

/* ── FOOTER ──────────────────────────────────── */
footer {
  padding: 2.5rem 4rem;
  border-top: 1px solid var(--color-rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-ivory);
}

footer .copyright {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 300;
  letter-spacing: 0.03em;
}

footer .footer-links {
  display: flex;
  gap: 2rem;
}

footer .footer-links a {
  font-size: 0.75rem;
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.3s ease;
}

footer .footer-links a:hover { color: var(--color-charcoal); }

/* ── DISCLAIMER ──────────────────────────────── */
.disclaimer {
  padding: 2rem 4rem 2.5rem;
  background: var(--color-ivory);
  border-top: 1px solid rgba(212,207,198,0.4);
}

.disclaimer p {
  max-width: 1200px;
  margin: 0 auto;
  font-size: 0.68rem;
  font-weight: 300;
  color: var(--color-muted);
  line-height: 1.7;
  opacity: 0.7;
}

/* ── ANIMATIONS ──────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 900px) {
  nav { padding: 1.25rem 2rem; }
  .hero { padding: 7rem 2rem 4rem; }
  .thesis { padding: 4rem 2rem; }
  .thesis-inner { grid-template-columns: 1fr; gap: 3rem; }
  .partnership { padding: 4rem 2rem; }
  .partnership-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .focus-areas { grid-template-columns: 1fr; gap: 1.5rem; }
  .contact-section { padding: 3.5rem 2rem; }
  footer { padding: 2rem; flex-direction: column; gap: 1rem; text-align: center; }
  .disclaimer { padding: 1.5rem 2rem; }
  .page-header { padding: 8rem 2rem 3rem; }
  .philosophy { padding: 0 2rem 4rem; }
  .philosophy-block { grid-template-columns: 1fr; gap: 1.5rem; }
  .contact-form-section { padding: 0 2rem 4rem; }
  .contact-form-grid { grid-template-columns: 1fr; gap: 3rem; }
  .form-row-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .nav-links { gap: 1.5rem; }
  .nav-links a { font-size: 0.72rem; }
  .hero h1 { font-size: 1.7rem; }
  .hero-metric .number { font-size: 2.2rem; }
}