/* ==========================================================================
   rafidavis.com — Material 3 Expressive, blue scheme
   ========================================================================== */

:root {
  /* M3 blue tonal palette (light) */
  --md-primary: #0b57d0;
  --md-on-primary: #ffffff;
  --md-primary-container: #d3e3fd;
  --md-on-primary-container: #041e49;
  --md-secondary: #00639b;
  --md-secondary-container: #c2e7ff;
  --md-on-secondary-container: #001d35;
  --md-tertiary: #146c2e;
  --md-tertiary-container: #c4eed0;
  --md-on-tertiary-container: #072711;
  --md-surface: #f8f9ff;
  --md-surface-dim: #d9dae3;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-low: #f2f3fa;
  --md-surface-container: #eceef4;
  --md-surface-container-high: #e6e8ee;
  --md-surface-container-highest: #e0e2e9;
  --md-on-surface: #191c20;
  --md-on-surface-variant: #44474e;
  --md-outline: #74777f;
  --md-outline-variant: #c4c6d0;
  --md-inverse-surface: #2e3036;
  --md-inverse-on-surface: #eff0f7;

  --shape-xl: 28px;
  --shape-l: 20px;
  --shape-m: 16px;
  --shape-full: 999px;

  --elev-1: 0 1px 2px rgba(11, 30, 73, .12), 0 1px 3px 1px rgba(11, 30, 73, .06);
  --elev-2: 0 2px 6px 2px rgba(11, 30, 73, .10), 0 1px 2px rgba(11, 30, 73, .12);
  --elev-3: 0 8px 24px rgba(11, 30, 73, .16);

  --spring: cubic-bezier(.34, 1.3, .42, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Roboto Flex", "Roboto", system-ui, sans-serif;
  background: var(--md-surface);
  color: var(--md-on-surface);
  line-height: 1.6;
  font-size: 16px;
}

.material-symbols-rounded {
  font-variation-settings: 'FILL' 0, 'wght' 500, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
  font-size: 1.25em;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: "Roboto Flex", sans-serif; margin: 0 0 .4em; line-height: 1.12; }
.display {
  font-size: clamp(2.6rem, 6.5vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -.02em;
  font-variation-settings: 'wdth' 110;
}
.headline { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 750; letter-spacing: -.01em; }
.title-l { font-size: 1.35rem; font-weight: 700; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .85rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--md-primary); margin-bottom: 1rem;
}
.muted { color: var(--md-on-surface-variant); }

/* ---------- Layout ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2.5rem); }
section { padding: clamp(2.2rem, 5vw, 4rem) 0; }

/* ---------- Top app bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--md-surface) 86%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .8rem clamp(1rem, 4vw, 2.5rem);
  max-width: 1180px; margin: 0 auto;
}
.brand {
  font-weight: 800; font-size: 1.15rem; text-decoration: none;
  color: var(--md-on-surface); letter-spacing: -.01em;
  display: inline-flex; align-items: center; gap: .55rem;
}
.brand .dot {
  width: 14px; height: 14px; border-radius: 5px; background: var(--md-primary);
  display: inline-block; transform: rotate(12deg);
}
nav.pills { display: flex; gap: .35rem; flex-wrap: wrap; }
nav.pills a {
  text-decoration: none; color: var(--md-on-surface-variant);
  font-weight: 600; font-size: .95rem;
  padding: .55rem 1.05rem; border-radius: var(--shape-full);
  transition: background .2s, color .2s;
}
nav.pills a:hover { background: var(--md-surface-container-high); color: var(--md-on-surface); }
nav.pills a.active { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .85rem 1.6rem; border-radius: var(--shape-full);
  font-weight: 700; font-size: 1rem; text-decoration: none; border: none; cursor: pointer;
  transition: box-shadow .25s, transform .25s var(--spring), background .2s, border-radius .35s var(--spring);
}
.btn:hover { transform: translateY(-1px); border-radius: var(--shape-m); }
.btn-filled { background: var(--md-primary); color: var(--md-on-primary); box-shadow: var(--elev-1); }
.btn-filled:hover { box-shadow: var(--elev-2); }
.btn-tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.btn-outlined { background: transparent; color: var(--md-primary); border: 1.5px solid var(--md-outline-variant); }

/* ---------- Hero ---------- */
.hero { padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(2rem, 5vw, 4rem); }
.hero-grid {
  display: grid; grid-template-columns: 1.25fr .75fr;
  gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center;
}
.hero-copy p.lead { font-size: 1.15rem; max-width: 56ch; color: var(--md-on-surface-variant); }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.6rem; }
.hero-photo {
  width: 100%; aspect-ratio: 4/5; object-fit: cover;
  border-radius: 48% 52% 46% 54% / 38% 38% 62% 62%;
  box-shadow: var(--elev-3);
  background: var(--md-primary-container);
}
.hero-photo-frame { position: relative; }
.hero-photo-frame::before {
  content: ""; position: absolute; inset: -14px -14px auto auto;
  width: 90px; height: 90px; border-radius: 32px;
  background: var(--md-primary-container); transform: rotate(14deg); z-index: -1;
}
.hero-photo-frame::after {
  content: ""; position: absolute; bottom: -18px; left: -18px;
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--md-secondary-container); z-index: -1;
}

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 1.3rem; }
.card {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: var(--md-surface-container-low);
  border-radius: var(--shape-xl); overflow: hidden;
  transition: transform .3s var(--spring), box-shadow .3s, background .25s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--elev-2); background: var(--md-surface-container-lowest); }
.card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; background: var(--md-surface-container-high); }
.card-body { padding: 1.3rem 1.4rem 1.5rem; }
.card-body .kicker { font-size: .82rem; font-weight: 700; color: var(--md-primary); letter-spacing: .06em; text-transform: uppercase; }
.card-body h3 { font-size: 1.25rem; font-weight: 750; margin: .35rem 0 .35rem; }
.card-body p { margin: 0; color: var(--md-on-surface-variant); font-size: .96rem; }
.card-cta { margin-top: .9rem; font-weight: 700; color: var(--md-primary); display: inline-flex; align-items: center; gap: .3rem; font-size: .95rem; }

/* ---------- Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: .55rem; }
.chip {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .45rem 1rem; border-radius: 10px;
  background: var(--md-surface-container-high);
  font-size: .9rem; font-weight: 600; color: var(--md-on-surface-variant);
  border: 1px solid var(--md-outline-variant);
}
.chip.tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); border: none; }
.chip.primary { background: var(--md-primary-container); color: var(--md-on-primary-container); border: none; }

/* ---------- Project pages ---------- */
.back-link {
  display: inline-flex; align-items: center; gap: .4rem; text-decoration: none;
  color: var(--md-on-secondary-container); background: var(--md-secondary-container);
  font-weight: 700; font-size: .92rem; padding: .5rem 1.1rem; border-radius: var(--shape-full);
  margin: 1.6rem 0 0;
}
.project-hero-img {
  width: 100%; max-height: 460px; object-fit: cover;
  border-radius: var(--shape-xl); box-shadow: var(--elev-2); margin: 1.6rem 0;
  background: var(--md-surface-container-high);
}
.tag-row { display: flex; flex-wrap: wrap; gap: .55rem; margin: .8rem 0 1.4rem; }
.project-grid { display: grid; grid-template-columns: 1.6fr .9fr; gap: clamp(1.4rem, 3.5vw, 3rem); align-items: start; }
.project-grid .prose p { margin: 0 0 1.1em; color: var(--md-on-surface); font-size: 1.04rem; }
.panel {
  background: var(--md-surface-container-low); border-radius: var(--shape-xl);
  padding: 1.5rem 1.6rem; margin-bottom: 1.2rem;
}
.panel h3 { font-size: 1.08rem; font-weight: 750; margin-bottom: .8rem; }
.panel ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .65rem; }
.panel ul li { display: flex; align-items: flex-start; gap: .6rem; color: var(--md-on-surface-variant); font-size: .98rem; }
.panel ul li .material-symbols-rounded { color: var(--md-primary); font-size: 1.25rem; margin-top: .1rem; }

/* ---------- Section headers ---------- */
.section-head { margin-bottom: 1.8rem; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 780; }

/* ---------- Timeline (About) ---------- */
.timeline { display: grid; gap: 1rem; }
.tl-item {
  display: grid; grid-template-columns: 150px 1fr; gap: 1.2rem;
  background: var(--md-surface-container-low); border-radius: var(--shape-l);
  padding: 1.3rem 1.5rem;
}
.tl-item .when { font-weight: 750; color: var(--md-primary); font-size: .95rem; }
.tl-item h3 { font-size: 1.12rem; font-weight: 750; margin-bottom: .15rem; }
.tl-item .org { font-weight: 600; color: var(--md-on-surface-variant); font-size: .95rem; margin-bottom: .35rem; }
.tl-item p { margin: 0; color: var(--md-on-surface-variant); font-size: .96rem; }

/* ---------- Contact ---------- */
.contact-card {
  background: linear-gradient(135deg, var(--md-primary-container), var(--md-secondary-container));
  border-radius: var(--shape-xl); padding: clamp(2rem, 5vw, 3.5rem);
}
.contact-facts { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 1.8rem; }
.contact-facts span { display: inline-flex; align-items: center; gap: .55rem; font-weight: 600; color: var(--md-on-primary-container); }

/* ---------- Rav Hirsch showcase ---------- */
.hirsch-hero {
  background: linear-gradient(140deg, var(--md-primary-container) 0%, var(--md-surface-container-low) 70%);
  border-radius: var(--shape-xl); padding: clamp(2rem, 5vw, 3.6rem);
  margin-top: 1.6rem;
}
.stat-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }
.stat {
  background: var(--md-surface-container-lowest); border-radius: var(--shape-l);
  padding: .9rem 1.5rem; box-shadow: var(--elev-1); min-width: 130px;
}
.stat b { display: block; font-size: 1.5rem; font-weight: 800; color: var(--md-primary); }
.stat span { font-size: .85rem; color: var(--md-on-surface-variant); font-weight: 600; }

.sefer-head {
  display: flex; align-items: center; gap: .9rem;
  margin: 3.2rem 0 1.4rem;
}
.sefer-head h2 { margin: 0; font-size: clamp(1.5rem, 2.8vw, 2rem); font-weight: 780; }
.sefer-head .heb { font-size: 1.25rem; color: var(--md-primary); font-weight: 700; }
.sefer-head::after { content: ""; flex: 1; height: 2px; border-radius: 2px; background: var(--md-outline-variant); }

.design-block {
  background: var(--md-surface-container-low);
  border-radius: var(--shape-xl);
  padding: 1.5rem clamp(1rem, 2.5vw, 1.8rem) 1.7rem;
  margin-bottom: 1.6rem;
}
.design-head { display: flex; align-items: baseline; gap: .9rem; flex-wrap: wrap; margin-bottom: 1.1rem; }
.design-num {
  background: var(--md-primary); color: var(--md-on-primary);
  font-weight: 800; font-size: .95rem; border-radius: 12px;
  padding: .3rem .85rem; letter-spacing: .02em;
}
.design-head h3 { margin: 0; font-size: 1.4rem; font-weight: 780; }
.design-head .heb { color: var(--md-primary); font-weight: 700; font-size: 1.15rem; }
.design-head .pages { margin-left: auto; color: var(--md-on-surface-variant); font-size: .9rem; font-weight: 600; display: inline-flex; align-items: center; gap: .35rem; }

.strip {
  display: grid; grid-auto-flow: column; grid-auto-columns: min(340px, 78vw);
  gap: 1rem; overflow-x: auto; padding: .2rem .2rem 1rem;
  scroll-snap-type: x mandatory; scrollbar-width: thin;
  scrollbar-color: var(--md-outline-variant) transparent;
}
.strip img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  border-radius: var(--shape-l); scroll-snap-align: start;
  box-shadow: var(--elev-1); background: var(--md-surface-container-high);
  display: block;
}

/* ---------- TF dimensions grid ---------- */
.dim-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(245px, 1fr)); gap: 1rem; }
.dim {
  background: var(--md-surface-container-low); border-radius: var(--shape-l);
  padding: 1.3rem 1.4rem;
}
.dim .material-symbols-rounded { color: var(--md-primary); font-size: 1.7rem; }
.dim h4 { margin: .5rem 0 .1rem; font-size: 1.05rem; font-weight: 750; }
.dim .heb { color: var(--md-primary); font-weight: 700; font-size: .95rem; }
.dim p { margin: .45rem 0 0; font-size: .92rem; color: var(--md-on-surface-variant); }

/* Lens-coloured dimension cards (Torah Framework) */
.dim.lens {
  background: var(--lens);
  color: rgba(255, 255, 255, .92);
  transition: transform .3s var(--spring), box-shadow .3s;
}
.dim.lens:hover { transform: translateY(-3px); box-shadow: var(--elev-2); }
.dim.lens h4 { color: #fff; }
.dim.lens .heb { color: rgba(255, 255, 255, .8); }
.dim.lens p { color: rgba(255, 255, 255, .88); }
.dim.lens .material-symbols-rounded { color: rgba(255, 255, 255, .95); }
.dim.lens.lens-dark-text { color: rgba(20, 24, 33, .85); }
.dim.lens.lens-dark-text h4 { color: #141821; }
.dim.lens.lens-dark-text .heb { color: rgba(20, 24, 33, .7); }
.dim.lens.lens-dark-text p { color: rgba(20, 24, 33, .78); }
.dim.lens.lens-dark-text .material-symbols-rounded { color: #141821; }

/* ---------- Footer ---------- */