/* =========================================================================
   ABDULHAMID AL-FARRA — Digital Product Architect
   Design System  ·  Part 1: Tokens, Nav, Hero, Motion
   ========================================================================= */

/* ----------  RESET  ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{min-height:100vh;overflow-x:hidden;font-synthesis:none;
  text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ----------  DESIGN TOKENS  ---------- */
:root{
  /* type */
  --font-display:"Space Grotesk",system-ui,sans-serif;
  --font-body:"Inter",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
  --font-ar:"IBM Plex Sans Arabic",system-ui,sans-serif;

  /* accent (steel blue — anti-AI, no purple/neon) */
  --accent:#2563EB;
  --accent-2:#3b82f6;
  --accent-ink:#ffffff;
  --accent-soft:rgba(37,99,235,.14);
  --accent-line:rgba(37,99,235,.32);

  /* radii / motion */
  --r-sm:10px; --r-md:16px; --r-lg:24px; --r-xl:32px;
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --dur:.6s;
  --maxw:1240px;
  --pad:clamp(20px,5vw,64px);
}

/* DARK (default) — matte obsidian */
:root,:root[data-theme="dark"]{
  --bg:#0A0A0A;
  --bg-2:#0d0d0d;
  --surface:#121212;
  --surface-2:#171717;
  --surface-hi:#1c1c1f;
  --border:#242427;
  --border-hi:#33333a;
  --text:#f5f5f4;
  --text-muted:#a1a1aa;
  --text-dim:#71717a;
  --grid:rgba(255,255,255,.035);
  --glass:rgba(18,18,18,.72);
  --shadow:0 24px 60px -24px rgba(0,0,0,.8);
  --scrim:linear-gradient(180deg,transparent,#0A0A0A 92%);
}
/* LIGHT — warm paper, near-black ink (stealth-wealth) */
:root[data-theme="light"]{
  --bg:#f3f2ef;
  --bg-2:#efeeea;
  --surface:#ffffff;
  --surface-2:#faf9f7;
  --surface-hi:#ffffff;
  --border:#e3e1db;
  --border-hi:#d4d1c8;
  --text:#0d0d0c;
  --text-muted:#57544d;
  --text-dim:#8b887f;
  --grid:rgba(0,0,0,.045);
  --glass:rgba(255,255,255,.74);
  --shadow:0 24px 60px -28px rgba(40,38,32,.35);
  --scrim:linear-gradient(180deg,transparent,#f3f2ef 92%);
}

/* ----------  BASE  ---------- */
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
  letter-spacing:-.011em;
  transition:background .5s var(--ease),color .5s var(--ease);
}
:root[lang="ar"] body{font-family:var(--font-ar);letter-spacing:0}
:root[lang="ar"] .font-display{font-family:var(--font-ar)}

.font-display{font-family:var(--font-display);font-weight:700;letter-spacing:-.03em}
.mono{font-family:var(--font-mono);font-weight:500}
:root[lang="ar"] .mono{font-family:var(--font-mono)} /* keep mono LTR labels */

/* ----------  BACKGROUND FIELD  ---------- */
.bg-field{position:fixed;inset:0;z-index:0;pointer-events:none}
.bg-grid{position:absolute;inset:0;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 35%,transparent 78%);
          mask-image:radial-gradient(120% 90% at 50% 0%,#000 35%,transparent 78%);
}
.bg-spot{position:absolute;width:760px;height:760px;border-radius:50%;
  left:var(--mx,50%);top:var(--my,18%);transform:translate(-50%,-50%);
  background:radial-gradient(circle,var(--accent-soft),transparent 62%);
  opacity:.7;transition:opacity .6s var(--ease);filter:blur(6px)}
:root[data-theme="light"] .bg-spot{opacity:.5}

/* ----------  CUSTOM CURSOR  ---------- */
.cursor-dot,.cursor-ring{position:fixed;top:0;left:0;z-index:9999;pointer-events:none;
  border-radius:50%;transform:translate(-50%,-50%);mix-blend-mode:difference}
.cursor-dot{width:6px;height:6px;background:#fff}
.cursor-ring{width:34px;height:34px;border:1.5px solid rgba(255,255,255,.6);
  transition:width .25s var(--ease),height .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease)}
.cursor-ring.is-hover{width:58px;height:58px;background:rgba(255,255,255,.1);border-color:transparent}
body.using-cursor{cursor:none}
body.using-cursor a,body.using-cursor button{cursor:none}
@media (hover:none),(max-width:860px){.cursor-dot,.cursor-ring{display:none}}

/* ----------  LAYOUT  ---------- */
.wrap{position:relative;z-index:1;width:100%;max-width:var(--maxw);
  margin-inline:auto;padding-inline:var(--pad)}

/* ----------  TOP NAV  ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;
  transition:transform .45s var(--ease),background .4s var(--ease),border-color .4s var(--ease)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:74px;border-bottom:1px solid transparent;transition:border-color .4s var(--ease)}
.nav.scrolled{background:var(--glass);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4)}
.nav.scrolled .nav-inner{border-color:var(--border)}

.brand{display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-weight:600}
.brand-mark{width:38px;height:38px;border:1px solid var(--border-hi);border-radius:10px;
  display:grid;place-items:center;font-size:13px;letter-spacing:.06em;
  background:var(--surface);position:relative;overflow:hidden;
  transition:border-color .3s var(--ease),transform .4s var(--ease)}
.brand:hover .brand-mark{border-color:var(--accent);transform:rotate(-4deg)}
.brand-mark::after{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 40%,var(--accent-soft));opacity:0;transition:opacity .35s}
.brand:hover .brand-mark::after{opacity:1}
.brand-name{font-size:13px;letter-spacing:.02em;color:var(--text);white-space:nowrap;line-height:1.2}
.brand-name small{display:block;font-size:10px;color:var(--text-dim);letter-spacing:.18em;text-transform:uppercase}

.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{position:relative;font-size:13.5px;color:var(--text-muted);
  padding:9px 14px;border-radius:999px;font-weight:500;transition:color .3s var(--ease)}
.nav-link::before{content:"";position:absolute;inset:0;border-radius:999px;
  background:var(--surface-2);opacity:0;transform:scale(.85);transition:opacity .3s var(--ease),transform .3s var(--ease)}
.nav-link span{position:relative}
.nav-link:hover{color:var(--text)}
.nav-link:hover::before{opacity:1;transform:scale(1)}

.nav-tools{display:flex;align-items:center;gap:10px}

/* segmented language switch */
.lang{display:flex;position:relative;border:1px solid var(--border);border-radius:999px;
  padding:3px;background:var(--surface);font-family:var(--font-mono)}
.lang-thumb{position:absolute;top:3px;bottom:3px;width:calc(50% - 3px);left:3px;
  background:var(--accent);border-radius:999px;transition:transform .42s var(--ease)}
:root[lang="ar"] .lang-thumb{transform:translateX(calc(100% - 0px))}
.lang button{position:relative;z-index:1;font-size:11px;font-weight:600;letter-spacing:.05em;
  padding:6px 12px;color:var(--text-muted);transition:color .3s var(--ease)}
.lang button.on{color:var(--accent-ink)}

/* theme toggle */
.theme-btn{width:40px;height:40px;border:1px solid var(--border);border-radius:999px;
  background:var(--surface);display:grid;place-items:center;position:relative;overflow:hidden;
  transition:border-color .3s var(--ease),background .3s var(--ease)}
.theme-btn:hover{border-color:var(--border-hi)}
.theme-btn svg{width:18px;height:18px;position:absolute;transition:transform .5s var(--ease),opacity .4s var(--ease)}
.theme-btn .ic-sun{opacity:0;transform:rotate(-90deg) scale(.4)}
.theme-btn .ic-moon{opacity:1;transform:rotate(0) scale(1)}
:root[data-theme="light"] .theme-btn .ic-sun{opacity:1;transform:rotate(0) scale(1)}
:root[data-theme="light"] .theme-btn .ic-moon{opacity:0;transform:rotate(90deg) scale(.4)}

.nav-cta{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;white-space:nowrap;
  padding:10px 18px;border-radius:999px;background:var(--text);color:var(--bg);
  transition:transform .35s var(--ease),opacity .3s}
.nav-cta:hover{opacity:.88}

/* ----------  BUTTONS  ---------- */
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;white-space:nowrap;
  font-weight:600;font-size:15px;padding:15px 26px;border-radius:999px;
  overflow:hidden;will-change:transform;transition:transform .4s var(--ease)}
.btn .lbl{position:relative;z-index:2;display:inline-flex;align-items:center;gap:10px;white-space:nowrap}
.btn svg{width:17px;height:17px}

.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary::after{content:"";position:absolute;inset:0;z-index:1;
  background:radial-gradient(120px 80px at var(--bx,50%) var(--by,50%),var(--accent-2),transparent 70%);
  opacity:0;transition:opacity .4s var(--ease)}
.btn-primary:hover::after{opacity:1}

.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border-hi)}
.btn-ghost::after{content:"";position:absolute;inset:0;z-index:1;background:var(--surface-2);
  transform:translateY(101%);transition:transform .45s var(--ease)}
.btn-ghost:hover{border-color:var(--text)}
.btn-ghost:hover::after{transform:translateY(0)}

/* arrow nudge */
.btn .arr{transition:transform .4s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
:root[lang="ar"] .btn:hover .arr{transform:translateX(-4px)}

/* ----------  HERO  ---------- */
.hero{position:relative;padding-top:clamp(120px,18vh,180px);padding-bottom:clamp(60px,10vh,110px)}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:clamp(32px,5vw,72px);align-items:center}

.kicker{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-family:var(--font-mono);
  font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:var(--text-muted);padding:8px 14px;border:1px solid var(--border);border-radius:999px;
  background:var(--surface)}
.kicker .dot{width:7px;height:7px;border-radius:50%;background:#22c55e;position:relative}
.kicker .dot::after{content:"";position:absolute;inset:-5px;border-radius:50%;
  border:1px solid #22c55e;animation:ping 2.2s var(--ease) infinite}
@keyframes ping{0%{transform:scale(.6);opacity:.9}80%,100%{transform:scale(1.9);opacity:0}}

.hero h1{font-family:var(--font-display);font-weight:700;letter-spacing:-.035em;
  font-size:clamp(46px,7.2vw,104px);line-height:.94;margin:26px 0 0}
:root[lang="ar"] .hero h1{font-family:var(--font-ar);font-weight:700;letter-spacing:-.01em;line-height:1.06}
.hero h1 .ln{display:block;overflow:hidden}
.hero h1 .ln>span{display:block}

.role{margin-top:22px;font-size:clamp(18px,2.1vw,24px);font-weight:500;color:var(--text);
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.role .fixed{color:var(--text-muted)}
.rotator{display:inline-grid;height:1.25em;overflow:hidden;vertical-align:bottom}
.rotator b{font-weight:700;color:var(--accent);font-family:var(--font-display)}
:root[lang="ar"] .rotator b{font-family:var(--font-ar)}
.rotator .track{display:flex;flex-direction:column;transition:transform .6s var(--ease)}
.rotator .track span{height:1.25em;display:flex;align-items:center}

.lede{margin-top:26px;max-width:46ch;font-size:clamp(15px,1.7vw,18.5px);
  line-height:1.65;color:var(--text-muted)}

.hero-cta{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}

.hero-stats{margin-top:46px;display:flex;gap:clamp(20px,4vw,52px);flex-wrap:wrap;
  padding-top:30px;border-top:1px solid var(--border)}
.stat .n{font-family:var(--font-display);font-weight:700;font-size:clamp(26px,3vw,34px);
  letter-spacing:-.03em;display:flex;align-items:baseline;gap:2px}
.stat .n .plus{color:var(--accent)}
.stat .l{margin-top:4px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--text-dim)}

/* portrait */
.portrait{position:relative;justify-self:end;width:100%;max-width:420px}
.portrait-frame{position:relative;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;background:var(--surface);aspect-ratio:1/1.06;box-shadow:var(--shadow)}
.portrait-frame img{width:100%;height:100%;object-fit:cover;
  filter:grayscale(.18) contrast(1.04);transition:filter .6s var(--ease),transform 1.6s var(--ease)}
.portrait:hover .portrait-frame img{filter:grayscale(0) contrast(1.06);transform:scale(1.04)}
.portrait-frame::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(0,0,0,.55));pointer-events:none}
:root[data-theme="light"] .portrait-frame::after{background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.32))}
/* corner brackets */
.portrait .br{position:absolute;width:24px;height:24px;border:2px solid var(--accent);z-index:3}
.portrait .br.tl{top:14px;left:14px;border-right:0;border-bottom:0}
.portrait .br.tr{top:14px;right:14px;border-left:0;border-bottom:0}
.portrait .br.bl{bottom:14px;left:14px;border-right:0;border-top:0}
.portrait .br.brr{bottom:14px;right:14px;border-left:0;border-top:0}
.portrait-tag{position:absolute;left:18px;bottom:18px;z-index:3;white-space:nowrap;
  display:flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.06em;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.6)}
.portrait-tag .pdot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.portrait-badge{position:absolute;top:-14px;right:24px;z-index:4;white-space:nowrap;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  background:var(--text);color:var(--bg);padding:8px 13px;border-radius:999px;
  box-shadow:var(--shadow)}
:root[lang="ar"] .portrait-badge{right:auto;left:24px}

/* ----------  ENTRANCE / REVEAL (visible by default; hidden only when JS present) ---------- */
.reveal{transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal{opacity:0;transform:translateY(22px)}
.js .reveal.in{opacity:1;transform:none}
.hero h1 .ln>span{transition:transform .9s var(--ease)}
.js .hero h1 .ln>span{transform:translateY(110%)}
.js .hero.in h1 .ln>span{transform:translateY(0)}
[data-stagger]{transition-delay:var(--d,0s)}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001s!important}
  .js .reveal,.reveal{opacity:1!important;transform:none!important}
  .js .hero h1 .ln>span{transform:none!important}
}

/* ----------  RESPONSIVE  ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .portrait{justify-self:start;max-width:340px;order:-1}
  .nav-links{display:none}
}
@media (max-width:560px){
  .nav-cta .lbl-txt{display:none}
  .hero-stats{gap:24px}
}

/* RTL niceties */
:root[lang="ar"]{direction:rtl}
:root[lang="ar"] .mono,:root[lang="ar"] .kicker,:root[lang="ar"] .stat .l,
:root[lang="ar"] .brand,:root[lang="ar"] .lang{direction:ltr}

/* =========================================================================
   POLISH — reading progress · scrollspy · selection · anchor offset
   ========================================================================= */
::selection{background:var(--accent);color:#fff}
:root[data-theme="light"] ::selection{background:var(--accent);color:#fff}

/* keep section headings clear of the fixed nav when jumping via links */
section[id]{scroll-margin-top:88px}

/* thin gradient reading-progress bar */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:200;pointer-events:none;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  box-shadow:0 0 12px var(--accent-line);transition:width .12s linear}

/* active nav link (set by scrollspy) */
.nav-link.active{color:var(--text)}
.nav-link.active::before{opacity:1;transform:scale(1)}

/* =========================================================================
   MOBILE MENU — hamburger + slide-in drawer
   ========================================================================= */
.burger{display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;border:1px solid var(--border-hi);
  border-radius:12px;background:transparent;cursor:pointer}
.burger span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;
  transition:transform .3s var(--ease),opacity .2s}
@media (max-width:960px){ .burger{display:flex} }
@media (max-width:640px){ .nav-cta{display:none} }

.nav-menu{position:fixed;inset:0;z-index:250;visibility:hidden;opacity:0;
  transition:opacity .35s var(--ease),visibility .35s}
.nav-menu.open{visibility:visible;opacity:1}
.nav-menu-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.6);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.nav-menu-panel{position:absolute;top:0;right:0;height:100%;width:min(86vw,360px);
  background:var(--surface);border-left:1px solid var(--border);box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:4px;padding:88px 24px 32px;
  transform:translateX(100%);transition:transform .42s var(--ease);overflow-y:auto}
.nav-menu.open .nav-menu-panel{transform:translateX(0)}
:root[lang="ar"] .nav-menu-panel{right:auto;left:0;border-left:0;
  border-right:1px solid var(--border);transform:translateX(-100%)}
:root[lang="ar"] .nav-menu.open .nav-menu-panel{transform:translateX(0)}
.nav-menu-x{position:absolute;top:24px;right:24px;width:44px;height:44px;display:grid;
  place-items:center;border:1px solid var(--border-hi);border-radius:12px;
  background:transparent;color:var(--text);cursor:pointer;transition:border-color .2s,transform .2s}
:root[lang="ar"] .nav-menu-x{right:auto;left:24px}
.nav-menu-x:hover{border-color:var(--text);transform:rotate(90deg)}
.nav-menu-x svg{width:20px;height:20px}
.nav-menu-link{display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-family:var(--font-display);font-weight:600;font-size:21px;letter-spacing:-.01em;
  color:var(--text);text-decoration:none;padding:15px 6px;border-bottom:1px solid var(--border);
  opacity:0;transform:translateY(10px)}
.nav-menu.open .nav-menu-link{animation:menuIn .45s var(--ease) forwards;
  animation-delay:calc(.05s * var(--i) + .08s)}
.nav-menu-link svg{width:18px;height:18px;color:var(--text-dim);transition:transform .25s var(--ease),color .2s}
.nav-menu-link:hover{color:var(--accent)}
.nav-menu-link:hover svg{color:var(--accent);transform:translateX(4px)}
:root[lang="ar"] .nav-menu-link svg{transform:scaleX(-1)}
:root[lang="ar"] .nav-menu-link:hover svg{transform:scaleX(-1) translateX(4px)}
.nav-menu-cta{margin-top:auto;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  background:var(--accent);color:#fff;border-radius:14px;padding:16px;font-weight:600;
  text-decoration:none;opacity:0;transform:translateY(10px)}
.nav-menu.open .nav-menu-cta{animation:menuIn .45s var(--ease) forwards;animation-delay:.45s}
.nav-menu-cta:hover{opacity:.9}
@keyframes menuIn{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  .nav-menu-link,.nav-menu-cta{opacity:1;transform:none;animation:none}
}