/* ============================================================
   היזם והים / משפחת אוחנה — מערכת עיצוב משותפת
   סגנון: חם ונוסטלגי · עברית RTL
   ============================================================ */
:root{
  --cream:#FBF5EA;
  --cream-2:#F5ECDA;
  --paper:#FFFDF8;
  --ink:#2D2820;
  --ink-soft:#5A5040;
  --sepia:#9A754B;
  --sepia-dark:#7A5A37;
  --sea:#22555B;
  --sea-deep:#173E43;
  --gold:#BE9A46;
  --gold-soft:#D9BE7E;
  --border:#E4D7BF;
  --shadow:rgba(60,45,25,.14);
  --maxw:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Assistant',system-ui,Arial,sans-serif;
  color:var(--ink);background:var(--cream);
  line-height:1.85;font-size:18px;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.serif{font-family:'Frank Ruhl Libre',Georgia,serif;font-weight:700;line-height:1.3}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.center{text-align:center}

/* ---------- NAV ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(251,245,234,.93);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{display:flex;flex-direction:column;line-height:1.1}
.brand b{font-family:'Frank Ruhl Libre',serif;font-size:23px;color:var(--sea-deep);letter-spacing:.5px}
.brand span{font-size:12.5px;color:var(--sepia);font-weight:600;letter-spacing:2px}
.menu{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.menu a{padding:9px 14px;border-radius:999px;font-weight:600;font-size:15.5px;color:var(--ink-soft);transition:.2s}
.menu a:hover{background:var(--cream-2);color:var(--sea-deep)}
.menu a.active{background:var(--sea);color:#fff}
.menu a.btn-nav{background:var(--gold);color:#23170A}
.menu a.btn-nav:hover{background:#cda655;color:#23170A}
.burger{display:none;background:none;border:1px solid var(--border);border-radius:10px;padding:8px 12px;font-size:20px;cursor:pointer}

/* ---------- HERO ---------- */
.hero{position:relative;overflow:hidden;color:#F6EEDD;
  background:radial-gradient(1200px 500px at 80% -10%, rgba(190,154,70,.18), transparent 60%),
    linear-gradient(160deg,var(--sea-deep),var(--sea) 70%)}
.hero.tall{min-height:78vh;display:flex;align-items:center}
.hero-grain{position:absolute;inset:0;opacity:.10;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:74px 24px 84px;position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto}
.hero-inner.solo{grid-template-columns:1fr;text-align:center}
.eyebrow{display:inline-block;font-weight:700;letter-spacing:4px;font-size:13px;color:var(--gold-soft);margin-bottom:18px}
.hero h1{font-family:'Frank Ruhl Libre',serif;font-weight:900;font-size:clamp(44px,6vw,78px);color:#fff;line-height:1.05;margin-bottom:10px;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.hero .sub{font-size:clamp(20px,2.4vw,27px);font-family:'Frank Ruhl Libre',serif;color:var(--gold-soft);margin-bottom:22px}
.hero p.lead{font-size:18.5px;color:#EADFC9;max-width:560px;margin-bottom:30px}
.hero-inner.solo p.lead{margin-inline:auto}

/* ---------- BUTTONS ---------- */
.cta{display:inline-flex;align-items:center;gap:10px;background:var(--gold);color:#23170A;font-weight:700;
  padding:14px 30px;border-radius:999px;font-size:17px;transition:.2s;box-shadow:0 8px 24px rgba(0,0,0,.18);border:none;cursor:pointer}
.cta:hover{transform:translateY(-2px);background:#cda655}
.cta.sea{background:var(--sea);color:#fff}
.cta.sea:hover{background:#2c6e72}
.cta.ghost{background:transparent;color:#F6EEDD;border:1.5px solid rgba(246,238,221,.5);box-shadow:none;margin-inline-start:10px}
.cta.ghost:hover{background:rgba(246,238,221,.1)}
.cta.dl{background:var(--sea-deep);color:#fff}
.cta.dl:hover{background:#22555B}

/* ---------- SECTIONS ---------- */
section{padding:78px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 50px}
.section-head .kicker{color:var(--sepia);font-weight:700;letter-spacing:3px;font-size:13px}
.section-head h2{font-size:clamp(30px,4vw,42px);color:var(--sea-deep);margin:10px 0 14px;display:inline-block}
.section-head h2::after{content:"";display:block;width:64px;height:3px;background:var(--gold);margin:16px auto 0;border-radius:3px}
.section-head p{color:var(--ink-soft);font-size:18px}
.tint{background:var(--cream-2)}

/* ---------- PHOTO FRAME ---------- */
.frame{background:var(--paper);padding:14px 14px 50px;border-radius:4px;box-shadow:0 20px 46px var(--shadow)}
.frame img{border-radius:2px;filter:sepia(.18) contrast(1.02)}
.frame .cap{font-family:'Frank Ruhl Libre',serif;color:#6a5436;text-align:center;font-size:15.5px;margin-top:14px}
.tilt-l{transform:rotate(-2.5deg)}
.tilt-r{transform:rotate(2deg)}
.pin{position:absolute;top:-10px;left:50%;transform:translateX(-50%);width:18px;height:18px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#e2c074,#9a7424);box-shadow:0 3px 6px rgba(0,0,0,.4)}

/* ---------- CARDS ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--paper);border:1px solid var(--border);border-radius:14px;padding:30px 28px;transition:.22s;position:relative;overflow:hidden;display:block}
.card::before{content:"";position:absolute;top:0;inset-inline-start:0;width:5px;height:100%;background:var(--gold);opacity:0;transition:.22s}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 40px var(--shadow);border-color:var(--gold-soft)}
.card:hover::before{opacity:1}
.card .ic{font-size:30px;margin-bottom:12px}
.card h3{font-size:22px;color:var(--sea-deep);margin-bottom:8px}
.card p{color:var(--ink-soft);font-size:16px;line-height:1.7}
.card .more{display:inline-block;margin-top:14px;color:var(--sepia-dark);font-weight:700;font-size:15px}

/* ---------- QUOTE BAND ---------- */
.band{background:var(--sea-deep);color:#F4EAD4;text-align:center;padding:70px 0}
.band blockquote{font-family:'Frank Ruhl Libre',serif;font-size:clamp(24px,3.4vw,34px);line-height:1.5;max-width:840px;margin:0 auto;color:#fff}
.band .by{margin-top:22px;color:var(--gold-soft);font-weight:600;letter-spacing:1px}

/* ---------- CHAPTERS INDEX ---------- */
.toc{max-width:860px;margin:0 auto;display:grid;gap:14px}
.toc a{display:flex;align-items:center;gap:20px;background:var(--paper);border:1px solid var(--border);
  border-radius:13px;padding:20px 26px;transition:.2s}
.toc a:hover{transform:translateX(-6px);box-shadow:0 12px 30px var(--shadow);border-color:var(--gold-soft)}
.toc .num{font-family:'Frank Ruhl Libre',serif;font-size:30px;font-weight:900;color:var(--gold);min-width:54px;text-align:center}
.toc .tx h3{font-size:21px;color:var(--sea-deep);margin-bottom:3px}
.toc .tx p{color:var(--ink-soft);font-size:15px;line-height:1.6}
.toc .arrow{margin-inline-start:auto;color:var(--sepia);font-size:22px}

/* ---------- CHAPTER PAGE (reading) ---------- */
.chap-hero{background:linear-gradient(160deg,var(--sea-deep),var(--sea));color:#F6EEDD;padding:60px 0 50px;text-align:center}
.chap-hero .pretitle{color:var(--gold-soft);font-weight:700;letter-spacing:3px;font-size:14px;margin-bottom:10px}
.chap-hero h1{color:#fff;font-size:clamp(32px,4.6vw,52px);margin-bottom:8px}
.chap-hero .ch-num{font-family:'Frank Ruhl Libre',serif;font-size:64px;font-weight:900;color:rgba(217,190,126,.5);line-height:1}
.reading{max-width:760px;margin:0 auto;padding:64px 24px}
.reading p{font-size:19px;color:var(--ink);margin-bottom:20px;text-align:justify}
.reading p:first-of-type::first-letter{font-family:'Frank Ruhl Libre',serif;font-size:62px;font-weight:900;
  float:right;line-height:.8;margin:6px 0 0 12px;color:var(--sepia)}
.reading h2{font-family:'Frank Ruhl Libre',serif;color:var(--sea-deep);font-size:27px;margin:40px 0 14px;
  padding-bottom:8px;border-bottom:2px solid var(--gold-soft)}
.reading figure{margin:30px 0;text-align:center}
.reading figure img{border-radius:8px;box-shadow:0 14px 34px var(--shadow);margin:0 auto;filter:sepia(.15)}
.reading figure figcaption{font-family:'Frank Ruhl Libre',serif;color:#6a5436;font-size:15px;margin-top:10px}

/* prev / next */
.chap-nav{max-width:760px;margin:0 auto 70px;padding:0 24px;display:flex;justify-content:space-between;gap:14px}
.chap-nav a{flex:1;background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:16px 20px;transition:.2s}
.chap-nav a:hover{border-color:var(--gold-soft);box-shadow:0 10px 26px var(--shadow)}
.chap-nav .dir{font-size:13px;color:var(--sepia);font-weight:700}
.chap-nav .ttl{font-family:'Frank Ruhl Libre',serif;color:var(--sea-deep);font-size:18px}
.chap-nav .next{text-align:left}
.chap-nav .disabled{opacity:.4;pointer-events:none}

/* ---------- DOWNLOAD CALLOUT ---------- */
.dl-callout{background:linear-gradient(160deg,#2a2018,#3a2c1e);color:#F4EAD4;border-radius:18px;
  padding:46px 44px;display:flex;align-items:center;gap:36px;flex-wrap:wrap;justify-content:center;text-align:center;
  max-width:900px;margin:0 auto;box-shadow:0 20px 50px var(--shadow)}
.dl-callout .bk{font-size:60px}
.dl-callout h3{font-size:28px;color:#fff;margin-bottom:8px}
.dl-callout p{color:#D9CDB6;max-width:440px;margin-bottom:0}

/* ---------- FOOTER ---------- */
.foot{background:var(--ink);color:#E9E0CE}
.foot-top{display:grid;grid-template-columns:1.3fr 1fr 1.4fr;gap:46px;padding:64px 0 40px}
.foot h4{font-family:'Frank Ruhl Libre',serif;color:#fff;font-size:21px;margin-bottom:16px}
.foot p,.foot a{color:#C9BEA8;font-size:16px}
.foot .fmenu a{display:block;padding:5px 0;transition:.15s}
.foot .fmenu a:hover{color:var(--gold-soft);padding-inline-start:6px}
.foot .brand-f b{font-family:'Frank Ruhl Libre',serif;color:var(--gold-soft);font-size:24px;display:block;margin-bottom:8px}
.form label{display:block;font-size:14px;color:#C9BEA8;margin:10px 0 5px}
.form input,.form textarea{width:100%;padding:11px 14px;border-radius:9px;border:1px solid #4a4234;background:#262019;color:#F4EEDF;font-family:inherit;font-size:15px}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--gold)}
.form button{margin-top:14px;width:100%;background:var(--gold);color:#23170A;font-weight:700;border:none;padding:13px;border-radius:9px;font-size:16px;font-family:inherit;cursor:pointer;transition:.2s}
.form button:hover{background:#cda655}
.foot-bottom{border-top:1px solid #3a342a;padding:22px 0;font-size:14px;color:#9C927E;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;text-align:center}
.foot-bottom a{color:#B7AB92}
/* ITMO credit */
.itmo{display:inline-flex;align-items:center;gap:9px;color:#B7AB92;font-size:14px;transition:.2s}
.itmo:hover{color:var(--gold-soft)}
.itmo .logo{display:inline-flex;align-items:center;gap:2px;font-family:'Frank Ruhl Libre',serif;font-weight:900;
  font-size:18px;letter-spacing:.5px;padding:4px 10px;border:1.5px solid var(--gold);border-radius:8px;color:var(--gold-soft)}
.itmo .logo .dot{color:var(--sea-deep);background:var(--gold-soft);border-radius:3px;padding:0 4px}
.itmo small{font-size:12px;color:#9C927E;letter-spacing:1px}

@media(max-width:900px){
  .menu{display:none}
  .burger{display:block}
  .menu.open{display:flex;position:absolute;top:72px;right:0;left:0;flex-direction:column;background:var(--cream);border-bottom:1px solid var(--border);padding:14px 24px;gap:4px}
  .hero-inner{grid-template-columns:1fr;text-align:center;gap:34px}
  .hero-inner .hero-photo{order:-1;justify-self:center}
  .hero p.lead{margin-inline:auto}
  .cards,.cards.two{grid-template-columns:1fr 1fr}
  .foot-top{grid-template-columns:1fr;gap:34px}
}
@media(max-width:560px){
  .cards,.cards.two{grid-template-columns:1fr}
  .cta.ghost{margin-inline-start:0;margin-top:10px}
  .foot-bottom{flex-direction:column}
}