/* =========================================================================
   VICTOR TAGHIZADEH MATHEMATICS — SITE STYLESHEET
   =========================================================================
   Organized so the working palette can be swapped in one place once real
   photography and book covers are available. Search for "PALETTE" below.
   ========================================================================= */

/* ---- PALETTE (working direction — see README for how to update this) --- */
:root{
  --ink:#221D1D;
  --ink-soft:#5C544E;
  --muted:#706860;      /* darkened from a lighter grey so small captions still pass WCAG AA on --paper */
  --paper:#FBF8F4;
  --surface:#FFFFFF;
  --line:#EAE2D9;

  --accent:#744661;        /* muted plum — primary accent, CTAs, links */
  --accent-dark:#583349;   /* hover/pressed state for accent */
  --accent-2:#BE8A45;      /* restrained warm gold — used sparingly */
  --accent-tint:#F2E6E9;   /* soft plum wash for background blocks */
  --spine-3:#8C5B68;       /* third book-spine tone */

  --serif:Georgia,"Iowan Old Style","Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"Cascadia Code","SF Mono",Consolas,monospace;
}

/* ---- RESET / BASE -------------------------------------------------- */
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ transition:none !important; animation:none !important; }
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{ color:inherit; }
img,svg{ display:block; max-width:100%; height:auto; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

.wrap{ max-width:1160px; margin:0 auto; padding:0 28px; }

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}
.skip-link{
  position:absolute; left:12px; top:-48px; background:var(--ink); color:#fff;
  padding:10px 16px; border-radius:4px; z-index:100; transition:top .15s ease;
  font-size:0.9rem; text-decoration:none;
}
.skip-link:focus{ top:12px; }

/* ---- HEADER / NAV ---------------------------------------------------- */
.site-header{
  position:sticky; top:0; z-index:20;
  background:color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{ display:flex; align-items:center; justify-content:space-between; padding:18px 0; }
.brand{ display:flex; flex-direction:column; line-height:1.1; text-decoration:none; color:var(--ink); }
.brand-name{ font-family:var(--serif); font-size:1.1rem; font-weight:700; }
.brand-sub{ font-family:var(--sans); font-size:0.66rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-top:3px; }

.navlinks{ display:flex; align-items:center; gap:30px; }
.navlinks a{ font-size:0.87rem; text-decoration:none; color:var(--ink-soft); padding-bottom:2px; border-bottom:1px solid transparent; }
.navlinks a:hover{ color:var(--ink); border-color:var(--accent-2); }
.navlinks a[aria-current="page"]{ color:var(--ink); border-color:var(--accent); font-weight:600; }

.nav-toggle{
  display:none; background:none; border:1px solid var(--line); border-radius:6px;
  width:40px; height:40px; align-items:center; justify-content:center; cursor:pointer;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  display:block; width:18px; height:2px; background:var(--ink); position:relative; transition:transform .15s ease;
}
.nav-toggle-bars::before{ content:""; position:absolute; top:-6px; }
.nav-toggle-bars::after{ content:""; position:absolute; top:6px; }

@media (max-width:760px){
  .nav-toggle{ display:flex; }
  .navlinks{
    position:absolute; left:0; right:0; top:100%;
    flex-direction:column; align-items:flex-start; gap:16px;
    background:var(--surface); border-bottom:1px solid var(--line);
    padding:20px 28px 26px; display:none;
  }
  .navlinks.is-open{ display:flex; }
  .navlinks .btn{ width:100%; justify-content:center; }
}

/* ---- BUTTONS ----------------------------------------------------------- */
.btn{
  display:inline-flex; align-items:center; gap:8px; font-weight:600; font-size:0.88rem;
  padding:12px 24px; border-radius:999px; text-decoration:none; border:1px solid transparent; cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-primary{ background:var(--accent); color:#FBF2F5; }
.btn-primary:hover{ background:var(--accent-dark); transform:translateY(-1px); box-shadow:0 8px 18px -8px color-mix(in srgb, var(--accent) 55%, transparent); }
.btn-primary:disabled{ opacity:.6; cursor:not-allowed; transform:none; box-shadow:none; }
.btn-sm{ padding:9px 19px; font-size:0.82rem; }
.textlink{ font-size:0.9rem; font-weight:600; text-decoration:none; color:var(--ink-soft); border-bottom:1px solid var(--line); padding-bottom:2px; }

/* ---- SHARED SECTION / TYPE PATTERNS ------------------------------------ */
section{ padding:84px 0; }
.sec-head{ max-width:640px; margin:0 0 44px; }
.sec-eyebrow{ font-family:var(--mono); font-size:0.72rem; letter-spacing:.09em; text-transform:uppercase; color:var(--accent-dark); margin:0 0 12px; }
.sec-h{ font-family:var(--serif); font-size:clamp(1.4rem,1.24rem + 0.55vw,1.9rem); font-weight:700; margin:0 0 14px; text-wrap:balance; }
.sec-p{ color:var(--ink-soft); font-size:1rem; margin:0; max-width:64ch; }
.page-title{ font-family:var(--serif); font-size:clamp(1.9rem,1.55rem + 1.4vw,2.7rem); font-weight:700; margin:0 0 16px; text-wrap:balance; }
.page-intro{ color:var(--ink-soft); font-size:1.08rem; max-width:60ch; margin:0; }
.page-head{ padding:64px 0 20px; }

/* ---- HERO (home) -------------------------------------------------------- */
.hero{ position:relative; overflow:hidden; padding:76px 0 96px; }
.hero-grid{ display:grid; grid-template-columns:1fr 1.08fr; gap:56px; align-items:center; position:relative; }
@media (max-width:920px){ .hero-grid{ grid-template-columns:1fr; gap:48px; } }
.geo{ position:absolute; opacity:.09; pointer-events:none; stroke:var(--accent); fill:none; }
.geo-1{ width:260px; height:260px; left:-70px; bottom:-60px; }

.eyebrow{ font-family:var(--mono); font-size:0.72rem; letter-spacing:.09em; text-transform:uppercase; color:var(--accent-dark); margin:0 0 26px; display:flex; align-items:center; gap:10px; }
.eyebrow::before{ content:""; width:22px; height:1px; background:var(--accent-2); }
.hero-name{ font-family:var(--serif); font-weight:700; font-size:clamp(2.1rem,1.6rem + 2.3vw,3.3rem); line-height:1.05; letter-spacing:.01em; text-transform:uppercase; margin:0 0 16px; text-wrap:balance; }
.hero-role{ font-size:0.98rem; font-weight:600; letter-spacing:.02em; color:var(--ink-soft); margin:0 0 26px; }
.hero-value{ font-size:1.1rem; color:var(--ink-soft); max-width:44ch; margin:0 0 34px; line-height:1.55; }
.hero-ctas{ display:flex; align-items:center; gap:22px; flex-wrap:wrap; }

.portrait-wrap{ position:relative; max-width:560px; margin-left:auto; }
@media (max-width:920px){ .portrait-wrap{ max-width:420px; margin-left:0; } }
.portrait-block{ position:absolute; inset:14px -14px -14px 14px; background:var(--accent-tint); border-radius:2px; z-index:0; }
.portrait-ph{ position:relative; z-index:1; aspect-ratio:4/5; overflow:hidden; border:1px solid var(--line); box-shadow:0 20px 36px -22px rgba(41,26,34,.28); }
.portrait-ph img{ width:100%; height:100%; object-fit:cover; object-position:center 18%; }
.portrait-cap{ margin-top:16px; font-family:var(--mono); font-size:0.66rem; letter-spacing:.05em; text-transform:uppercase; color:var(--muted); }

/* ---- ABOUT -------------------------------------------------------------- */
.about-body{ max-width:680px; }
.about-body p{ color:var(--ink-soft); font-size:1.05rem; margin:0 0 18px; max-width:60ch; }
.about-body a{ font-weight:600; color:var(--ink); text-decoration:none; border-bottom:1px solid var(--accent-2); }

.credential-list{ list-style:none; margin:32px 0 0; padding:0; display:flex; flex-direction:column; gap:0; max-width:60ch; }
.credential-list li{ padding:16px 0; border-top:1px solid var(--line); font-size:0.95rem; color:var(--ink-soft); }
.credential-list li:last-child{ border-bottom:1px solid var(--line); }
.credential-list strong{ color:var(--ink); display:block; font-family:var(--serif); font-size:1rem; margin-bottom:4px; }

/* ---- number-line divider -------------------------------------------- */
.divider{ padding:0 0 4px; }
.divider svg{ width:100%; height:34px; stroke:var(--muted); opacity:.35; }

/* ---- PROGRAMS ------------------------------------------------------------ */
/* Three primary specialties as elevated cards; everything else drops to a
   single compact list so it reads as "also available," not a second grid. */
.prog-tier{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:760px){ .prog-tier{ grid-template-columns:1fr; } }
.prog-card{
  background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:32px 28px;
  box-shadow:0 18px 34px -26px rgba(34,29,29,.28);
}
.prog-card .pn{ font-family:var(--mono); font-size:0.68rem; color:var(--accent-dark); letter-spacing:.06em; }
.prog-card h3{ font-family:var(--serif); font-size:1.2rem; margin:12px 0 9px; }
.prog-card p{ font-size:0.92rem; color:var(--ink-soft); margin:0; }

.prog-secondary{
  margin-top:36px; padding-top:28px; border-top:1px solid var(--line);
  display:flex; align-items:baseline; gap:20px; flex-wrap:wrap;
}
.prog-secondary-label{
  font-family:var(--mono); font-size:0.68rem; letter-spacing:.06em; text-transform:uppercase; color:var(--muted); flex:none;
}
.prog-secondary-list{ display:flex; align-items:baseline; gap:0; flex-wrap:wrap; }
.prog-secondary-list a{
  font-size:0.92rem; color:var(--ink-soft); text-decoration:none; padding:0 16px; border-right:1px solid var(--line);
}
.prog-secondary-list a:first-child{ padding-left:0; }
.prog-secondary-list a:last-child{ border-right:none; }
.prog-secondary-list a:hover{ color:var(--ink); }

/* expanded program detail blocks used on the Tutoring & Programs page */
.prog-detail{ padding:44px 0; border-top:1px solid var(--line); scroll-margin-top:90px; }
.prog-detail:first-of-type{ border-top:none; }
.prog-detail-head{ display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; margin-bottom:10px; }
.prog-detail h2{ font-family:var(--serif); font-size:1.35rem; margin:0; }
.prog-detail .pn{ font-family:var(--mono); font-size:0.7rem; color:var(--accent-dark); letter-spacing:.06em; text-transform:uppercase; }
.prog-detail p{ color:var(--ink-soft); font-size:1rem; max-width:66ch; margin:0 0 16px; }

/* ---- PUBLICATIONS -------------------------------------------------------- */
/* The second major visual moment on the homepage — deliberately larger
   container, type, and padding than the sections around it. */
.pubs-wrap{
  background:linear-gradient(180deg, var(--accent-tint), var(--paper) 78%);
  padding:112px 0 124px;
}
.pubs-wrap .wrap{ max-width:1280px; }
.pubs-wrap .sec-head{ max-width:720px; }
.pubs-wrap .sec-h{ font-size:clamp(1.7rem,1.4rem + 1vw,2.4rem); }
.pub-shelf{ display:grid; grid-template-columns:repeat(3,1fr); gap:40px; margin-top:60px; }
@media (max-width:760px){ .pub-shelf{ grid-template-columns:1fr; gap:44px; } }
.pub-card{ display:flex; flex-direction:column; }
.pub-card.offset{ transform:translateY(-30px); }
@media (max-width:760px){ .pub-card.offset{ transform:none; } }
.pub-cover{ aspect-ratio:2/3; display:flex; border:1px solid var(--line); box-shadow:0 32px 56px -24px rgba(87,55,73,.34); position:relative; overflow:hidden; }
.pub-spine{ width:14px; flex:none; }
.pub-face{ flex:1; position:relative; }
.pub-face img{ width:100%; height:100%; object-fit:cover; }
.pub-edition{
  position:absolute; right:14px; bottom:14px; font-family:var(--mono); font-size:0.68rem; letter-spacing:.04em;
  text-transform:uppercase; background:var(--accent); color:#FBF2F5; padding:6px 12px; border-radius:999px;
}
.pub-meta{ padding-top:20px; }
.pub-meta .pub-publisher{ font-size:0.88rem; color:var(--ink-soft); }
.pub-title{ font-family:var(--serif); font-size:1.4rem; font-weight:700; margin:0 0 5px; }

/* ---- TEACHING APPROACH -------------------------------------------------- */
.approach-grid{ display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:start; }
@media (max-width:820px){ .approach-grid{ grid-template-columns:1fr; gap:36px; } }
.pillars{ display:flex; flex-direction:column; gap:0; }
.pillar{ padding:18px 0; border-top:1px solid var(--line); }
.pillar:last-child{ padding-bottom:0; }
.pillar h3{ margin:0 0 6px; font-size:0.98rem; font-family:var(--serif); }
.pillar p{ margin:0; font-size:0.88rem; color:var(--ink-soft); }
.pullquote{
  position:relative; background:var(--accent-tint); border-radius:8px;
  padding:40px 34px 32px;
}
.pullquote::before{
  content:"\201C"; position:absolute; top:6px; left:26px; font-family:var(--serif);
  font-size:4.5rem; line-height:1; color:var(--accent); opacity:.28; pointer-events:none;
}
.pullquote p{
  position:relative; font-family:var(--serif); font-size:clamp(1.5rem,1.3rem + 0.7vw,1.9rem);
  line-height:1.38; color:var(--ink); margin:0; text-wrap:balance;
}

/* ---- HOW IT WORKS -------------------------------------------------------- */
.flow{ position:relative; margin-top:50px; }
.flow-line{ position:absolute; left:0; right:0; top:13px; height:1px; background:var(--line); }
.flow-steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; position:relative; }
@media (max-width:720px){ .flow-steps{ grid-template-columns:1fr 1fr; gap:34px; } .flow-line{ display:none; } }
.flow-step{ display:flex; flex-direction:column; gap:12px; }
.flow-dot{
  width:26px; height:26px; border-radius:50%; background:var(--paper); border:2px solid var(--accent); color:var(--accent-dark);
  font-family:var(--serif); font-weight:700; font-size:0.85rem; display:flex; align-items:center; justify-content:center; z-index:1;
}
.flow-step h3{ margin:0; font-size:0.96rem; }
.flow-step p{ margin:0; font-size:0.85rem; color:var(--ink-soft); }

/* ---- TESTIMONIALS (reserved) --------------------------------------------- */
/* One featured slot + two supporting slots, so real testimonials will have
   hierarchy from day one instead of three identical boxes. */
.testi-grid{ display:grid; grid-template-columns:1.4fr 1fr; gap:20px; margin-top:44px; }
@media (max-width:760px){ .testi-grid{ grid-template-columns:1fr; } }
.testi-support-col{ display:flex; flex-direction:column; gap:20px; }
.testi-card{
  border:1px dashed var(--line); border-radius:6px;
  display:flex; align-items:center; justify-content:center; text-align:center; padding:24px;
  background:var(--surface);
}
.testi-card span{ font-family:var(--mono); font-size:0.72rem; color:var(--muted); letter-spacing:.03em; }
.testi-featured{ min-height:100%; }
.testi-featured span{ font-size:0.8rem; }
.testi-support{ min-height:150px; flex:1; }

/* ---- CTA BANNER ----------------------------------------------------------- */
.cta-banner{ position:relative; padding:6px; }
.cta-block{ position:absolute; inset:16px -16px -16px 16px; background:var(--accent-tint); border-radius:2px; z-index:0; }
.cta-inner{ position:relative; z-index:1; background:var(--surface); border:1px solid var(--line); padding:52px 48px; text-align:center; }
.cta-inner h2{ font-family:var(--serif); font-size:1.5rem; margin:0 0 10px; }
.cta-inner p{ color:var(--ink-soft); margin:0 0 26px; }
.cta-alt{ margin-top:18px; font-size:0.85rem; color:var(--muted); }
.cta-alt a{ color:var(--ink-soft); font-weight:600; border-bottom:1px solid var(--line); }

/* ---- BOOK A SESSION FORM ---------------------------------------------------- */
.book-layout{ display:grid; grid-template-columns:1fr 1.2fr; gap:64px; align-items:start; }
@media (max-width:860px){ .book-layout{ grid-template-columns:1fr; gap:40px; } }
.book-side h2{ font-family:var(--serif); font-size:1.2rem; margin:0 0 14px; }
.book-side p{ color:var(--ink-soft); font-size:0.95rem; margin:0 0 14px; }

.field-form{ display:flex; flex-direction:column; gap:20px; }
.field{ display:flex; flex-direction:column; gap:6px; }
.field label{ font-size:0.86rem; font-weight:600; color:var(--ink); }
.field .hint{ font-size:0.78rem; color:var(--muted); font-weight:400; }
.field input, .field select, .field textarea{
  font:inherit; font-size:0.95rem; padding:12px 14px; border:1px solid var(--line); border-radius:6px;
  background:var(--surface); color:var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--accent); }
.field textarea{ resize:vertical; min-height:110px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
@media (max-width:520px){ .field-row{ grid-template-columns:1fr; } }

.form-note{
  border:1px solid var(--line); background:var(--accent-tint); border-radius:6px;
  padding:14px 16px; font-size:0.85rem; color:var(--ink-soft); margin-top:4px;
}
.confirm-state{
  display:none; border:1px solid var(--line); background:var(--surface); border-radius:6px; padding:28px; text-align:center;
}
.confirm-state.is-visible{ display:block; }
.confirm-state h2{ font-family:var(--serif); margin:0 0 8px; }
.confirm-state p{ color:var(--ink-soft); margin:0; }

/* ---- FOOTER ---------------------------------------------------------------- */
.site-footer{ border-top:1px solid var(--line); padding:56px 0 40px; }
.foot-grid{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; }
.foot-name{ font-family:var(--serif); font-weight:700; font-size:1.02rem; }
.foot-area{ font-size:0.85rem; color:var(--muted); margin-top:8px; max-width:32ch; }
.foot-links{ display:flex; gap:56px; flex-wrap:wrap; }
.foot-col h2{ font-family:var(--mono); font-size:0.65rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin:0 0 12px; font-weight:400; }
.foot-col a{ display:block; font-size:0.88rem; color:var(--ink-soft); text-decoration:none; margin-bottom:9px; }
.foot-col a:hover{ color:var(--ink); }
.foot-bottom{ margin-top:44px; padding-top:20px; border-top:1px solid var(--line); font-size:0.78rem; color:var(--muted); font-family:var(--mono); }