/* ==========================================================================
   Khaled Medhat Mahmoud - Portfolio design system
   --------------------------------------------------------------------------
   The colour tokens, typography, table language, KPI blocks, callouts and
   status chips in this file are extracted from the six original case-study
   reports so the website reads as a continuation of that document set.
   The layout, navigation and card components are the web extension.
   ========================================================================== */

:root{
  /* Core palette - taken from the source reports */
  --navy:#1F3864;
  --navy-d:#16294A;
  --teal:#2E86AB;
  --teal-d:#22688A;
  --teal-l:#EAF4F8;
  --blue:#2E74B5;
  --green:#1E8A5A;
  --dgreen:#146E46;
  --amber:#C55A11;
  --red:#B23A48;
  --gray:#595959;
  --lgray:#64707F;
  --line:#C9D4E4;
  --fill:#EEF3F8;
  --fill2:#F5F7FA;
  --ink:#1A1A1A;
  --white:#FFFFFF;
  --sand:#FDF6E3;
  --sandline:#E0C98A;
  --yellow:#FFECB3;
  --lightred:#FADBE0;

  /* Type - the reports use Segoe UI for text and Georgia for display headings */
  --font-sans:"Segoe UI",Calibri,"Helvetica Neue",Arial,sans-serif;
  --font-serif:Georgia,"Times New Roman",serif;

  --shadow:0 2px 18px rgba(22,41,74,.14);
  --shadow-lg:0 10px 34px rgba(22,41,74,.20);
  --radius:10px;
  --maxw:1120px;
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.62;
  color:var(--ink);
  background:var(--fill2);
  -webkit-font-smoothing:antialiased;
}

img,svg{max-width:100%}
img{height:auto}

a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

h1,h2,h3,h4{line-height:1.25;color:var(--navy);margin:0 0 .5em}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--navy);color:#fff;padding:10px 16px;border-radius:0 0 6px 0;
}
.skip-link:focus{left:0}

/* ---------------------------------------------------------------- layout -- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.container--narrow{max-width:840px}
.section{padding:64px 0}
.section--tight{padding:44px 0}
.section--fill{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tint{background:var(--fill)}
.section-head{margin-bottom:32px;max-width:760px}
.section-head .kicker{margin-bottom:6px}

.kicker{
  font-size:.76rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--teal-d);margin:0 0 4px;
}
.section-head h1,.section-head h2{font-family:var(--font-serif);font-size:clamp(1.5rem,3vw,2.05rem);margin:0 0 10px;color:var(--navy)}
.section-head p{color:var(--gray);margin:0;font-size:1.02rem}

/* ------------------------------------------------------------- site chrome - */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--navy-d);
  border-bottom:3px solid var(--teal);
}
.site-header__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 22px;min-height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;padding:9px 0}
.brand:hover{text-decoration:none}
.brand__mark{
  flex:0 0 auto;width:38px;height:38px;border:2px solid var(--teal);border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-weight:700;font-size:1rem;color:#fff;letter-spacing:.02em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__text b{font-size:.98rem;font-weight:600;color:#fff}
.brand__text small{font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:#9FB6D4}

.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{
  color:#D6E2F2;font-size:.92rem;font-weight:600;padding:9px 13px;border-radius:6px;
  text-decoration:none;transition:background .15s ease,color .15s ease;
}
.site-nav a:hover{background:rgba(255,255,255,.10);color:#fff;text-decoration:none}
.site-nav a[aria-current="page"]{background:var(--teal);color:#fff}

.nav-toggle{
  display:none;background:transparent;border:1px solid #3E5B8A;color:#fff;
  font:inherit;font-size:.9rem;font-weight:600;padding:8px 14px;border-radius:6px;cursor:pointer;
}

.site-footer{
  background:var(--navy-d);color:#B9C8DE;margin-top:0;
  border-top:3px solid var(--teal);padding:40px 0 28px;font-size:.9rem;
}
.site-footer__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 22px;
  display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;
}
.site-footer h3{color:#fff;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;margin:0 0 10px;font-family:var(--font-sans)}
.site-footer a{color:#B9C8DE;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer p{margin:0 0 6px;max-width:340px}
.site-footer .fineprint{
  width:100%;border-top:1px solid #2C466F;margin-top:8px;padding-top:16px;
  font-size:.78rem;color:#7F93B2;max-width:none;
}

/* ---------------------------------------------------------------- buttons - */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:600;font-size:.95rem;padding:11px 22px;border-radius:7px;
  border:1.5px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .12s ease,box-shadow .12s ease,background .15s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn--primary{background:var(--teal-d);color:#fff;box-shadow:0 4px 14px rgba(34,104,138,.35)}
.btn--primary:hover{background:#1B5570;color:#fff}
.btn--ghost{background:transparent;color:#fff;border-color:#5C7AA8}
.btn--ghost:hover{background:rgba(255,255,255,.10);color:#fff}
.btn--outline{background:#fff;color:var(--navy);border-color:var(--line)}
.btn--outline:hover{border-color:var(--teal);color:var(--teal-d)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ------------------------------------------------------------------- hero - */
.hero{
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy-d) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 82% 8%,rgba(46,134,171,.28),transparent 46%);
}
.hero__inner{
  position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;
  padding:74px 22px 66px;
}
.hero .kicker{color:#7FB3CE}
.hero h1{
  font-family:var(--font-serif);color:#fff;font-weight:700;
  font-size:clamp(2rem,5vw,3.15rem);line-height:1.12;letter-spacing:-.01em;
  margin:10px 0 0;max-width:19ch;
}
.hero .rule{width:66px;height:4px;background:var(--teal);margin:22px 0 20px}
.hero__lead{font-size:clamp(1.02rem,1.6vw,1.22rem);color:#D3E0F0;max-width:62ch;margin:0 0 8px}
.hero__sub{font-size:1rem;color:#A9B8CE;max-width:64ch;margin:14px 0 0}
.hero__aside{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px}
.hero__chip{
  font-size:.8rem;font-weight:600;letter-spacing:.03em;color:#DCE7F5;
  background:rgba(46,134,171,.18);border:1px solid #33507E;padding:6px 13px;border-radius:20px;
}

/* --------------------------------------------------------------- capitals - */
.kpi-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.kpi-card{
  background:#fff;border:1px solid var(--line);border-top:3px solid var(--teal);
  border-radius:0 0 var(--radius) var(--radius);padding:18px 20px;
}
.kpi-card:nth-child(2){border-top-color:var(--green)}
.kpi-card:nth-child(3){border-top-color:var(--navy)}
.kpi-card:nth-child(4){border-top-color:var(--amber)}
.kpi-card .v{
  font-family:var(--font-serif);font-size:clamp(1.5rem,3vw,1.95rem);
  font-weight:700;color:var(--navy);line-height:1.1;
}
.kpi-card .l{font-size:.88rem;color:var(--gray);margin-top:8px}
.kpi-card .tag{
  display:inline-block;margin-top:10px;font-size:.66rem;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--teal-d);background:var(--teal-l);padding:2px 8px;border-radius:9px;
}
.kpi-card .tag--est{color:#A84A0F;background:#FDF3EC}

/* --------------------------------------------------------------- cards ---- */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 24px 22px;box-shadow:0 1px 3px rgba(22,41,74,.06);
}
.card h3{font-size:1.12rem;margin:0 0 10px}
.card p{margin:0 0 10px;color:var(--gray);font-size:.96rem}
.card p:last-child{margin-bottom:0}
.card__num{
  font-family:var(--font-serif);font-size:.95rem;font-weight:700;color:#fff;background:var(--teal);
  width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  margin-bottom:12px;
}
.card--problem{border-left:4px solid var(--teal)}
.card--problem:nth-child(3n+2){border-left-color:var(--green)}
.card--problem:nth-child(3n+3){border-left-color:var(--navy)}

/* Problem -> approach -> evidence structure inside a capability card */
.cap-block{margin:14px 0 0;border-top:1px solid var(--line);padding-top:12px}
.cap-block dt{
  font-size:.7rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--teal-d);
  margin:0 0 3px;
}
.cap-block dd{margin:0 0 10px;font-size:.92rem;color:var(--ink)}
.cap-block dd:last-child{margin-bottom:0}

/* ----------------------------------------------------------- project cards */
.project-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.project-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:0 1px 3px rgba(22,41,74,.06);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.project-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#A9C3DE}
.project-card__top{background:var(--navy);color:#fff;padding:18px 22px 16px;position:relative}
.project-card__top .kicker{color:#7FB3CE;margin-bottom:6px;padding-right:90px;display:block;}
.project-card__top h3{color:#fff;font-family:var(--font-serif);font-size:1.16rem;margin:0;line-height:1.3}
.project-card__body{padding:18px 22px;flex:1;display:flex;flex-direction:column}
.project-card__body p{margin:0 0 16px;color:var(--gray);font-size:.94rem}
.project-card__metrics{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px;padding:0;list-style:none}
.project-card__metrics li{
  font-size:.78rem;font-weight:600;color:var(--navy);background:var(--fill);
  border:1px solid var(--line);border-radius:6px;padding:5px 10px;
}
.project-card__link{
  margin-top:auto;font-weight:700;color:var(--teal-d);font-size:.92rem;display:inline-flex;gap:7px;align-items:center;
}
.project-card__link::after{content:"\2192";transition:transform .15s ease}
.project-card:hover .project-card__link::after{transform:translateX(3px)}
.project-card__status{
  position:absolute;top:16px;right:18px;font-size:.64rem;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  color:#fff;padding:3px 9px;border-radius:10px;
}

/* --------------------------------------------------------- featured project */
.feature{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);display:grid;grid-template-columns:1.15fr .85fr;
}
.feature__main{padding:36px 38px}
.feature__side{background:var(--navy);color:#D3E0F0;padding:34px 32px;display:flex;flex-direction:column;gap:22px}
.feature__side h3{color:#fff;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;font-family:var(--font-sans);margin:0}
.feature__side ul{margin:8px 0 0;padding-left:18px}
.feature__side li{font-size:.9rem;margin-bottom:6px}
.feature .flag{
  display:inline-block;background:var(--amber);color:#fff;font-size:.68rem;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;padding:4px 11px;border-radius:11px;margin-bottom:14px;
}
.feature h3.project-title{font-family:var(--font-serif);font-size:clamp(1.4rem,2.6vw,1.9rem);margin:0 0 8px}
.feature__why{margin:20px 0 0;padding:16px 18px;background:var(--fill);border-left:4px solid var(--teal);border-radius:0 8px 8px 0}
.feature__why p{margin:0;font-size:.94rem;color:var(--ink)}
.feature__why strong{color:var(--navy)}

/* --------------------------------------------------------- story / timeline */
.story{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.story__item{border-top:2px solid var(--line);padding-top:16px}
.story__item .when{font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-d)}
.story__item h3{font-size:1.02rem;margin:6px 0 8px}
.story__item p{margin:0;color:var(--gray);font-size:.93rem}

/* ------------------------------------------------------------- capability - */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.chips li{
  font-size:.85rem;font-weight:600;color:var(--navy);background:#fff;border:1px solid var(--line);
  padding:7px 13px;border-radius:20px;
}
.skill-table{width:100%;border-collapse:collapse;background:#fff;font-size:.92rem}
.skill-table th{background:var(--navy);color:#fff;text-align:left;padding:11px 14px;font-weight:600;font-size:.82rem;letter-spacing:.04em}
.skill-table td{border-bottom:1px solid var(--line);padding:12px 14px;vertical-align:top}
.skill-table tr:nth-child(even) td{background:var(--fill2)}
.skill-table td:first-child{font-weight:600;color:var(--navy);width:26%}

/* ---------------------------------------------------------------- contact - */
.contact{background:var(--navy);color:#D3E0F0}
.contact .kicker{color:#7FB3CE}
.contact h2{color:#fff;font-family:var(--font-serif)}
.contact p{max-width:62ch;color:#C3D2E6}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:28px}
.contact-card{
  background:rgba(255,255,255,.05);border:1px solid #33507E;border-left:4px solid var(--teal);
  border-radius:0 8px 8px 0;padding:18px 20px;
}
.contact-card h3{color:#fff;font-size:.78rem;letter-spacing:.13em;text-transform:uppercase;margin:0 0 8px;font-family:var(--font-sans)}
.contact-card p{margin:0;font-size:.93rem;color:#C3D2E6}
.contact-card a{color:#9FD0E6;font-weight:600}

/* --------------------------------------------------------------- notices -- */
.notice{
  background:var(--fill);border-left:4px solid var(--teal);border-radius:0 8px 8px 0;
  padding:16px 20px;font-size:.93rem;color:var(--ink);margin:18px 0 0;
}
.notice--warn{background:var(--sand);border-left-color:var(--amber)}
.notice strong{color:var(--navy)}
.notice p{margin:0 0 8px}
.notice p:last-child{margin-bottom:0}

.badge-status{
  display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:3px 10px;border-radius:11px;color:#fff;background:var(--gray);
}
.badge-status--live{background:#0F5C3A}
.badge-status--inprogress{background:#A84A0F}
.badge-status--design{background:var(--blue)}
.badge-status--study{background:var(--navy)}

/* --------------------------------------------------- case study page chrome */
.project-bar{
  background:#fff;border-bottom:1px solid var(--line);font-size:.86rem;
}
.project-bar__inner{
  max-width:var(--maxw);margin:0 auto;padding:11px 22px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:space-between;
}
.project-bar a{color:var(--gray);font-weight:600}
.project-bar a:hover{color:var(--teal-d)}
.project-bar .crumb{color:var(--lgray)}
.project-bar .crumb b{color:var(--navy)}

/* Keep report tables usable on a narrow screen without editing the reports */
.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-scroll>table{margin-top:0}

/* -------------------------------------------------------------- utilities - */
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-d)}
.muted{color:var(--gray)}
.small{font-size:.86rem}
.center{text-align:center}
.mt-0{margin-top:0}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* --------------------------------------------------------------- responsive */
@media (max-width:860px){
  .feature{grid-template-columns:1fr}
  .feature__main{padding:28px 24px}
  .feature__side{padding:26px 24px}
  .section{padding:48px 0}
  .hero__inner{padding:52px 22px 46px}
  .site-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--navy-d);border-bottom:3px solid var(--teal);padding:8px 14px 16px;
  }
  .site-header{position:sticky}
  .site-header__inner{flex-wrap:wrap}
  .site-nav.is-open{display:flex}
  .site-nav a{padding:12px 10px;border-radius:6px}
  .nav-toggle{display:inline-block}
  .site-header__inner{position:relative}
}
@media print{
  .site-header,.site-footer,.project-bar,.skip-link,.nav-toggle{display:none!important}
  body{background:#fff!important}
}

/* --- Keyboard focus visibility (accessibility) --------------------------- */
:focus-visible{outline:3px solid var(--teal-d);outline-offset:2px;border-radius:3px}
.site-header :focus-visible,.hero :focus-visible,.contact :focus-visible,.site-footer :focus-visible{outline-color:#9FD0E6}

/* --- "In plain English" band used at the top of each case study ---------- */
.plain-english{background:var(--teal-l);border-bottom:1px solid var(--line)}
.plain-english__inner{max-width:var(--maxw);margin:0 auto;padding:13px 22px;font-size:.94rem;color:var(--ink)}
.plain-english strong{color:var(--navy)}
@media print{.plain-english{display:none}}