/* ========================================================================
   Nur Eken, MD — ekenmd.com
   Design Direction: Kintsugi (Crafted Materiality)
   Fonts: Fraunces (display/serif) + Inter Tight (body/UI)
   Palette: pale stone + persimmon (kakiiro)
   ======================================================================== */

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

:root {
  --paper: oklch(0.965 0.003 95);
  --bone: oklch(0.982 0.002 95);
  --stone: oklch(0.925 0.005 90);
  --ink: oklch(0.220 0.008 90);
  --ink-soft: oklch(0.450 0.008 90);
  --moss: oklch(0.530 0.130 38);
  --rule: oklch(0.220 0.012 235 / 0.14);
  --paper-warm: #f8f6f3;

  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "liga", "onum", "ss01";
  scroll-behavior: smooth;
}

body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0.001em;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection {
  background-color: var(--stone);
  color: var(--ink);
}

:focus-visible {
  outline: 1px solid var(--moss);
  outline-offset: 3px;
}

img { display: block; max-width: 100%; height: auto; }

/* Typography */
.serif, h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.012em;
  font-variation-settings: "opsz" 96, "SOFT" 50;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  background-image: linear-gradient(var(--moss), var(--moss));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0% 1px;
  transition: background-size 220ms var(--ease-out), color 220ms var(--ease-out);
}
a:hover { background-size: 100% 1px; }

/* Container */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
@media (min-width: 640px) {
  .container { padding-left: 2.5rem; padding-right: 2.5rem; }
}
@media (min-width: 1024px) {
  .container { padding-left: 4rem; padding-right: 4rem; max-width: 1240px; }
}

/* Label / Eyebrow */
.label-mono {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.label-mono-ink {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
}

/* Hairline */
.hairline {
  height: 1px;
  background-color: var(--rule);
  border: 0;
}

/* Kintsugi gold line */
.kintsugi-line {
  position: relative;
  height: 1px;
  background-color: var(--moss);
  width: 0;
  animation: kintsugi-draw 600ms var(--ease-out) forwards;
}
@keyframes kintsugi-draw {
  from { width: 0; }
  to   { width: 56px; }
}

/* Section number */
.section-num {
  font-family: var(--font-sans);
  font-feature-settings: "tnum", "lnum";
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
}

/* ===== Buttons ===== */
.btn-consult {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 28px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--paper);
  background-color: var(--moss);
  background-image: none;
  border: 1px solid var(--moss);
  cursor: pointer;
  transition: background-color 200ms var(--ease-out), border-color 200ms var(--ease-out), transform 160ms var(--ease-out);
}
.btn-consult:hover {
  background-color: color-mix(in oklch, var(--moss) 86%, var(--ink));
  border-color: color-mix(in oklch, var(--moss) 86%, var(--ink));
  background-size: 0 0;
}
.btn-consult:active { transform: translateY(1px); }
.btn-consult .arrow {
  display: inline-block;
  transition: transform 220ms var(--ease-out);
}
.btn-consult:hover .arrow { transform: translateX(4px); }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 22px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  background-image: none;
  cursor: pointer;
  transition: background-color 180ms var(--ease-out), color 180ms var(--ease-out), transform 160ms var(--ease-out);
}
.btn-primary:hover {
  background-color: var(--ink);
  color: var(--paper);
  background-size: 0 0;
}
.btn-primary:active { transform: translateY(1px); }
.btn-primary .arrow {
  display: inline-block;
  transition: transform 220ms var(--ease-out);
}
.btn-primary:hover .arrow { transform: translateX(4px); }

/* Link moss */
.link-moss {
  background-image: linear-gradient(var(--moss), var(--moss));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 100% 1px;
  padding-bottom: 2px;
  transition: color 220ms var(--ease-out);
}
.link-moss:hover { color: var(--moss); }

/* Affiliation links */
.affil-link {
  color: var(--ink-soft);
  text-decoration: none;
  background-image: none;
  border-bottom: 1px solid var(--rule);
  transition: color 200ms var(--ease-out), border-color 200ms var(--ease-out);
}
.affil-link:hover {
  color: var(--moss);
  border-bottom-color: var(--moss);
}

/* Form inputs */
.field-input {
  width: 100%;
  background-color: var(--bone);
  border: 1px solid transparent;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  transition: background-color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}
.field-input:focus {
  outline: none;
  background-color: color-mix(in oklch, var(--bone) 70%, var(--paper));
  border-color: var(--moss);
}
.field-input::placeholder {
  color: color-mix(in oklch, var(--ink-soft) 60%, transparent);
}
textarea.field-input { resize: vertical; min-height: 160px; }

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .kintsugi-line { animation: none; width: 56px; }
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: color-mix(in oklch, var(--paper) 92%, transparent);
  backdrop-filter: saturate(120%) blur(6px);
  -webkit-backdrop-filter: saturate(120%) blur(6px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 72px;
}
.desktop-nav {
  display: none;
  align-items: center;
  gap: 36px;
}
.nav-link {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 400;
  background-image: none;
  position: relative;
  padding-bottom: 4px;
}
.nav-link:hover { color: var(--ink); background-size: 0 0; }
.nav-link.active {
  color: var(--ink);
  font-weight: 500;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background-color: var(--moss);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--ease-out);
}
.nav-link.active::after { transform: scaleX(1); }

/* Mobile nav */
.mobile-toggle {
  display: block;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
  background: none;
  border: none;
  cursor: pointer;
  background-image: none;
}
.mobile-nav {
  display: none;
  background-color: var(--paper);
  padding: 18px 0 28px;
}
.mobile-nav.is-open { display: block; }
.mobile-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 768px) {
  .desktop-nav { display: flex; }
  .mobile-toggle { display: none; }
}

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
  padding-top: 56px;
  padding-bottom: 56px;
  border-top: 1px solid var(--rule);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 5fr 3fr 4fr;
    gap: 32px;
  }
}
.footer-nav { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-nav a {
  font-size: 15px;
  color: var(--ink);
  background-image: none;
}
.footer-nav a:hover {
  background-image: linear-gradient(var(--moss), var(--moss));
  background-size: 100% 1px;
}
.footer-bottom {
  border-top: 1px solid var(--rule);
  padding-top: 28px;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
@media (min-width: 768px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}

/* ===== Page Heading ===== */
.page-heading {
  padding-top: 80px;
  padding-bottom: 48px;
}
.page-heading h1 {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.018em;
  color: var(--ink);
  font-weight: 400;
  margin: 0;
}

/* ===== Home Hero ===== */
.home-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 48px;
}
@media (min-width: 800px) {
  .home-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: 56px;
    row-gap: 0;
    align-items: start;
  }
  .headshot-col { order: -1; }
  .home-hero-bio { order: 0; }
}

/* ===== Areas of Focus Row ===== */
.area-row {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 12px;
}
.area-row-body {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 12px;
}
@media (min-width: 768px) {
  .area-row {
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 28px;
    row-gap: 0;
  }
  .area-row-body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: 32px;
    row-gap: 14px;
    align-items: baseline;
  }
}

/* ===== Practice Section ===== */
.practice-section {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 18px;
}
@media (min-width: 768px) {
  .practice-section {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: 32px;
    row-gap: 0;
  }
}

/* ===== Contact Grid ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 48px;
}
@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: 48px;
    row-gap: 0;
  }
}
.contact-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 480px) {
  .contact-form-grid { grid-template-columns: 1fr 1fr; }
}
.contact-form-grid .full-width { grid-column: 1 / -1; }

/* Contact details */
.contact-details {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 24px;
  row-gap: 14px;
}
.contact-details dt { padding-top: 4px; }
.contact-details dd { margin: 0; font-size: 16px; line-height: 1.6; color: var(--ink); }

/* ===== Mobile Responsive ===== */
@media (max-width: 640px) {
  body { font-size: 16px; line-height: 1.65; }
  .container { padding-left: 1.25rem; padding-right: 1.25rem; }
  .h1-name { letter-spacing: -0.02em; line-height: 1.04; }
  .btn-primary, .btn-consult {
    width: 100%;
    justify-content: space-between;
  }
  .btn-primary { padding: 12px 18px; font-size: 11px; }
  .btn-consult { padding: 16px 22px; font-size: 12px; }
  .headshot-frame {
    padding: 0 !important;
    margin-top: 0 !important;
    max-width: 320px !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
}

/* ===== Utility ===== */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0);
}
.flex-1 { flex: 1; }