/* ============================================================
   MSS — Musaad Al-Saleh & Sons Co. Ltd.
   Creative, mobile-first, fully responsive design system
   ============================================================ */

:root{
  /* Palette — industrial / architectural, Kuwaiti warmth */
  --ink:#14161c;        /* near-black charcoal */
  --ink-2:#1d2230;      /* panel */
  --ink-3:#2a3142;
  --sand:#f3efe6;       /* warm paper */
  --sand-2:#e9e3d6;
  --cream:#fbf9f4;
  --amber:#e8772e;      /* construction amber */
  --amber-d:#c95f17;
  --gold:#c9a227;       /* heritage gold */
  --steel:#2b5d7e;      /* steel blue */
  --teal:#0f6e6a;
  --line:#d8d2c4;
  --muted:#6a7180;
  --white:#ffffff;
  --ok:#1e8449; --bad:#c0392b;

  /* Type */
  --f-display:"Space Grotesk","Helvetica Neue",Arial,sans-serif;
  --f-body:"Inter","Helvetica Neue",Arial,sans-serif;

  /* Layout */
  --maxw:1200px;
  --gut:clamp(16px,4vw,40px);
  --radius:14px;
  --shadow:0 10px 40px -12px rgba(20,22,28,.25);
  --shadow-sm:0 4px 16px -6px rgba(20,22,28,.22);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--f-body);color:var(--ink);
  background:var(--cream);line-height:1.6;font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--amber-d);text-decoration:none}
a:hover{color:var(--ink)}
h1,h2,h3,h4{font-family:var(--f-display);line-height:1.08;letter-spacing:-.015em;margin:0 0 .4em;font-weight:700}
h1{font-size:clamp(2.1rem,7vw,3.6rem)}
h2{font-size:clamp(1.6rem,4.5vw,2.5rem)}
h3{font-size:clamp(1.15rem,2.5vw,1.4rem)}
p{margin:0 0 1em}
.lead{font-size:clamp(1.05rem,2.4vw,1.25rem);color:var(--muted);max-width:62ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--f-display);
  font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--amber-d);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--amber)}

/* ---------- Layout ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}
section{padding-block:clamp(48px,8vw,96px)}
section.tight{padding-block:clamp(36px,5vw,64px)}
.bg-ink{background:var(--ink);color:var(--sand)}
.bg-ink h1,.bg-ink h2,.bg-ink h3{color:var(--cream)}
.bg-sand{background:var(--sand)}
.bg-cream{background:var(--cream)}
.grid{display:grid;gap:clamp(20px,3vw,36px)}
.g2{grid-template-columns:1fr}
.g3{grid-template-columns:1fr}
.g4{grid-template-columns:repeat(2,1fr)}
.split{display:grid;grid-template-columns:1fr;gap:clamp(24px,4vw,56px);align-items:center}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(20,22,28,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--cream);font-family:var(--f-display);font-weight:700;font-size:1.1rem}
.brand img{height:38px;width:auto;border-radius:6px}
.brand small{display:block;font-family:var(--f-body);font-weight:500;font-size:.62rem;letter-spacing:.14em;color:var(--amber);text-transform:uppercase}
.nav-links{display:none;align-items:center;gap:4px}
.nav-links a{
  color:var(--sand);font-size:.92rem;font-weight:500;padding:8px 12px;border-radius:8px;
  transition:background .2s,color .2s;
}
.nav-links a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-links a.active{color:var(--amber)}
.nav-cta{
  background:var(--amber);color:#fff!important;padding:9px 16px;border-radius:9px;font-weight:600;
}
.nav-cta:hover{background:var(--amber-d);color:#fff}
.burger{display:flex;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--cream);transition:.25s}
.mobile-menu{
  position:fixed;inset:0 0 0 auto;width:min(82vw,340px);z-index:60;
  background:var(--ink);padding:80px 26px 30px;transform:translateX(100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;gap:4px;
  box-shadow:var(--shadow);overflow-y:auto;
}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{color:var(--sand);font-family:var(--f-display);font-size:1.15rem;padding:13px 6px;border-bottom:1px solid rgba(255,255,255,.07)}
.mobile-menu a:hover{color:var(--amber)}
.menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:55;opacity:0;visibility:hidden;transition:.3s}
.menu-overlay.open{opacity:1;visibility:visible}
.menu-close{position:absolute;top:18px;right:18px;background:none;border:0;color:var(--cream);font-size:1.8rem;cursor:pointer}
body.lock{overflow:hidden}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  font-family:var(--f-display);font-weight:600;font-size:.95rem;letter-spacing:.01em;
  padding:13px 24px;border-radius:10px;border:2px solid transparent;cursor:pointer;
  transition:transform .15s,background .2s,color .2s,border-color .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--amber);color:#fff}
.btn-primary:hover{background:var(--amber-d);color:#fff}
.btn-ghost{background:transparent;color:var(--cream);border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-3);color:#fff}
.btn-arrow::after{content:"→";font-weight:700;transition:transform .2s}
.btn-arrow:hover::after{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:clamp(560px,92vh,820px);
  display:flex;align-items:flex-end;color:var(--cream);
  background:
    linear-gradient(180deg,rgba(20,22,28,.35) 0%,rgba(20,22,28,.55) 45%,rgba(20,22,28,.92) 100%),
    radial-gradient(900px 500px at 80% -10%,rgba(232,119,46,.35),transparent 60%),
    var(--ink);
  overflow:hidden;
}
.hero-media{position:absolute;inset:0;z-index:0;opacity:.28;mix-blend-mode:luminosity}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-grid{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(232,119,46,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(232,119,46,.12) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:2;padding-block:clamp(40px,7vw,80px)}
.hero h1{max-width:14ch}
.hero h1 .hl{color:var(--amber);position:relative}
.hero .lead{color:rgba(243,239,230,.85);max-width:54ch;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{display:flex;flex-wrap:wrap;gap:clamp(20px,4vw,44px);margin-top:clamp(34px,6vw,56px);padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.hero-meta .m .n{font-family:var(--f-display);font-size:clamp(1.8rem,5vw,2.6rem);font-weight:700;color:var(--amber);line-height:1}
.hero-meta .m .l{font-size:.78rem;color:rgba(243,239,230,.7);text-transform:uppercase;letter-spacing:.1em;margin-top:4px}
.scroll-cue{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);z-index:2;color:rgba(243,239,230,.6);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;writing-mode:vertical-rl;display:flex;align-items:center;gap:8px}

/* ---------- Cards ---------- */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(22px,3vw,30px);box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .num{font-family:var(--f-display);font-size:.8rem;font-weight:700;color:var(--amber);letter-spacing:.1em}
.card .ico{
  width:54px;height:54px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,var(--ink),var(--ink-3));color:var(--amber);font-size:1.6rem;
}
.card h3{margin-bottom:.5em}
.card p{color:var(--muted);font-size:.95rem}
.card .topbar{position:absolute;top:0;left:0;right:0;height:4px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.card:hover .topbar{transform:scaleX(1)}

/* service list */
.svc{display:grid;grid-template-columns:1fr;gap:14px}
.svc-item{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  background:var(--cream);border:1px solid var(--line);border-radius:12px;padding:18px 18px;
  transition:background .2s,border-color .2s;
}
.svc-item:hover{background:var(--sand);border-color:var(--amber)}
.svc-item .tag{font-family:var(--f-display);font-weight:700;color:var(--amber);font-size:.8rem;letter-spacing:.06em;min-width:42px}
.svc-item h3{font-size:1.15rem;margin-bottom:.25em}
.svc-item p{margin:0;color:var(--muted);font-size:.92rem}

/* values chips */
.values{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.value{
  border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--cream);
  text-align:center;transition:transform .2s,background .2s;
}
.value:hover{transform:translateY(-3px);background:var(--white)}
.value .v-ico{width:48px;height:48px;border-radius:50%;margin:0 auto 12px;display:grid;place-items:center;background:var(--ink);color:var(--gold);font-size:1.3rem}
.value h4{font-family:var(--f-display);font-size:1rem;margin:0 0 4px}
.value p{font-size:.8rem;color:var(--muted);margin:0}

/* owners */
.owners{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.owner{
  background:var(--white);border:1px solid var(--line);border-left:4px solid var(--amber);
  border-radius:10px;padding:16px 18px;
}
.owner .role{font-size:.72rem;color:var(--amber-d);font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.owner h4{font-family:var(--f-display);font-size:1rem;margin:4px 0 0}

/* ---------- Stats / counters ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.stat{text-align:center;padding:22px 12px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1)}
.stat .n{font-family:var(--f-display);font-size:clamp(1.9rem,7vw,2.8rem);font-weight:700;color:var(--amber);line-height:1}
.stat .l{font-size:.78rem;color:rgba(243,239,230,.7);text-transform:uppercase;letter-spacing:.08em;margin-top:6px}

/* ---------- Projects ---------- */
.filterbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.filter{
  font-family:var(--f-display);font-size:.85rem;font-weight:600;padding:8px 16px;border-radius:30px;
  border:1px solid var(--line);background:var(--cream);cursor:pointer;transition:.2s;color:var(--ink-2);
}
.filter:hover{border-color:var(--amber)}
.filter.active{background:var(--ink);color:var(--amber);border-color:var(--ink)}
.proj-table{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.proj-table table{width:100%;border-collapse:collapse;min-width:640px;font-size:.9rem}
.proj-table th{background:var(--ink);color:var(--sand);text-align:left;padding:13px 14px;font-family:var(--f-display);font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;position:sticky;top:0}
.proj-table td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
.proj-table tr{transition:background .15s}
.proj-table tbody tr:hover{background:var(--sand)}
.proj-table .yr{font-family:var(--f-display);font-weight:700;color:var(--amber-d);white-space:nowrap}
.proj-table .loc{white-space:nowrap}
.badge-client{display:inline-block;font-size:.72rem;font-weight:600;background:var(--sand-2);color:var(--ink-2);padding:3px 9px;border-radius:20px;white-space:nowrap}
.proj-row{display:none}
.proj-row.show{display:table-row}

/* ---------- Clients ---------- */
.client-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.client{
  background:var(--white);border:1px solid var(--line);border-radius:12px;padding:24px 18px;text-align:center;
  transition:transform .2s,box-shadow .2s;
}
.client:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.client .ci{width:56px;height:56px;border-radius:12px;margin:0 auto 12px;display:grid;place-items:center;background:var(--ink);color:var(--gold);font-family:var(--f-display);font-weight:700;font-size:1.2rem}
.client h4{font-family:var(--f-display);font-size:.95rem;margin:0}
.client p{font-size:.78rem;color:var(--muted);margin:4px 0 0}

/* ---------- Sister companies ---------- */
.sister{display:grid;grid-template-columns:1fr;gap:10px}
.sister li{
  list-style:none;display:flex;gap:14px;align-items:center;background:var(--cream);
  border:1px solid var(--line);border-radius:10px;padding:14px 16px;
}
.sister .sn{font-family:var(--f-display);font-weight:700;color:var(--amber);min-width:26px}
.sister .st{font-family:var(--f-display);font-weight:600;font-size:.98rem}
.sister .ss{font-size:.78rem;color:var(--muted);display:block}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--amber),var(--gold))}
.tl{position:relative;padding:0 0 28px 8px}
.tl::before{content:"";position:absolute;left:-26px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px var(--cream)}
.tl .yr{font-family:var(--f-display);font-weight:700;color:var(--amber-d);font-size:.85rem;letter-spacing:.04em}
.tl h4{font-family:var(--f-display);font-size:1.05rem;margin:2px 0 4px}
.tl p{color:var(--muted);font-size:.9rem;margin:0}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:24px}
.info-card{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:24px}
.info-card .ic-row{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line)}
.info-card .ic-row:last-child{border-bottom:0}
.info-card .ic-row .ico{width:42px;height:42px;border-radius:10px;background:var(--ink);color:var(--amber);display:grid;place-items:center;flex:0 0 auto;font-size:1.1rem}
.info-card .ic-row .t{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:600}
.info-card .ic-row .v{font-family:var(--f-display);font-weight:600;font-size:1.02rem}
.contact-form{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.82rem;font-weight:600;margin-bottom:6px;font-family:var(--f-display)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;font-family:var(--f-body);
  font-size:.95rem;background:var(--cream);transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(232,119,46,.15)}
.field textarea{min-height:120px;resize:vertical}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(243,239,230,.7);padding-block:clamp(40px,6vw,64px) 24px}
.footer-top{display:grid;grid-template-columns:1fr;gap:30px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand img{height:44px;border-radius:6px}
.footer-brand .fb{color:var(--cream);font-family:var(--f-display);font-weight:700;font-size:1.1rem}
.footer-col h5{font-family:var(--f-display);color:var(--cream);font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px}
.footer-col a{display:block;color:rgba(243,239,230,.7);padding:5px 0;font-size:.92rem}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{display:flex;flex-direction:column;gap:10px;padding-top:22px;font-size:.82rem;justify-content:space-between}
.footer-bottom a{color:var(--amber)}

/* ---------- Page header (interior) ---------- */
.page-head{
  background:var(--ink);color:var(--cream);padding-block:clamp(54px,9vw,96px);
  position:relative;overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:linear-gradient(rgba(232,119,46,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(232,119,46,.08) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-head .inner{position:relative;z-index:1}
.breadcrumb{font-size:.78rem;color:rgba(243,239,230,.6);letter-spacing:.05em;margin-bottom:14px}
.breadcrumb a{color:var(--amber)}
.breadcrumb span{margin:0 8px}
.page-head .lead{color:rgba(243,239,230,.8)}

/* ---------- Section header ---------- */
.shead{max-width:62ch;margin-bottom:clamp(28px,4vw,44px)}
.shead.center{margin-inline:auto;text-align:center}
.shead.center .eyebrow::before{display:none}
.shead.center .eyebrow{justify-content:center}

/* ---------- Misc ---------- */
.divider{height:1px;background:var(--line);border:0;margin:0}
.kbd-tag{display:inline-block;font-family:var(--f-display);font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:6px;background:var(--sand-2);color:var(--ink-2)}
.quote{font-family:var(--f-display);font-size:clamp(1.3rem,3vw,1.8rem);line-height:1.35;letter-spacing:-.01em;max-width:24ch}
.quote::before{content:"“";color:var(--amber);font-size:1.4em;line-height:0;vertical-align:-.2em;margin-right:.1em}
.callout{
  border-left:4px solid var(--amber);background:var(--sand);border-radius:0 12px 12px 0;
  padding:22px 24px;margin-block:8px;
}
.callout p{margin:0}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- Responsive ---------- */
@media(min-width:640px){
  .g4{grid-template-columns:repeat(4,1fr)}
  .stats{grid-template-columns:repeat(4,1fr)}
  .client-grid{grid-template-columns:repeat(3,1fr)}
  .owners{grid-template-columns:repeat(3,1fr)}
}
@media(min-width:900px){
  .g2{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(3,1fr)}
  .nav-links{display:flex}
  .burger{display:none}
  .values{grid-template-columns:repeat(5,1fr)}
  .owners{grid-template-columns:repeat(3,1fr)}
  .split{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:2fr 1fr 1fr 1fr}
  .footer-bottom{flex-direction:row;align-items:center}
  .sister{grid-template-columns:1fr 1fr}
}
@media(min-width:1100px){
  .values{grid-template-columns:repeat(5,1fr)}
  .client-grid{grid-template-columns:repeat(5,1fr)}
}