/* ==========================================================================
   Ahmed Makki — Portfolio
   Theme: Systems Blueprint — dark drafting-table aesthetic
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Arabic:wght@300;400;500;600;700&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

:root{
  --bg:        #0A1B30;
  --bg-deep:   #071426;
  --surface:   #0F2646;
  --surface-2: #12305A;
  --ink:       #EAF2FC;
  --ink-soft:  #A9C0DE;
  --ink-faint: #6683A9;
  --line:      rgba(158, 195, 236, 0.22);
  --line-strong: rgba(158, 195, 236, 0.4);
  --grid-line: rgba(126, 168, 214, 0.10);

  --primary:   #7FE0EE;
  --primary-dim: #4FA9BC;
  --primary-tint: rgba(127,224,238,0.12);

  --redline:   #E2574C;
  --redline-tint: rgba(226,87,76,0.14);

  --gold:      #E2A33B;
  --gold-tint: rgba(226,163,59,0.14);

  --font-ar: 'IBM Plex Sans Arabic', 'Tahoma', sans-serif;
  --font-en: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --step-0: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
  --step-1: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  --step-2: clamp(1.5rem, 1.3rem + 0.8vw, 1.95rem);
  --step-3: clamp(2rem, 1.6rem + 1.6vw, 2.9rem);
  --step-4: clamp(2.5rem, 1.9rem + 2.8vw, 4.3rem);

  --radius: 4px;
  --radius-sm: 3px;
  --maxw: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html:not([dir="rtl"]) body{font-family:var(--font-en);}
html[dir="rtl"] body{font-family:var(--font-ar);}

body{
  margin:0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0/42px 42px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0/42px 42px,
    var(--bg);
  color:var(--ink);
  font-size:var(--step-0);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}

[data-ar], [data-en]{display:none;}
html[dir="rtl"] [data-ar]{display:revert;}
html[dir="rtl"] [data-ar-inline]{display:inline;}
html:not([dir="rtl"]) [data-en]{display:revert;}
html:not([dir="rtl"]) [data-en-inline]{display:inline;}

.wrap{max-width:var(--maxw); margin-inline:auto; padding-inline:24px;}
.section{padding-block:96px;}
.section--tight{padding-block:60px;}
.section--alt{background:linear-gradient(180deg, transparent, rgba(15,38,70,0.55) 12%, rgba(15,38,70,0.55) 88%, transparent);}

h1,h2,h3,h4{margin:0; line-height:1.22; font-weight:700; letter-spacing:-0.01em; color:var(--ink);}
p{margin:0 0 1em;}
.eyebrow{
  font-family:var(--font-mono);
  font-size:0.75rem;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--primary);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{content:"//"; opacity:0.6;}
html[dir="rtl"] .eyebrow{letter-spacing:0.02em;}

.lead{color:var(--ink-soft); font-size:var(--step-1); max-width:58ch;}

header.site-header{
  position:sticky; top:0; z-index:40;
  background:rgba(7,20,38,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex; align-items:center; justify-content:space-between; padding-block:16px;}
.brand{display:flex; align-items:center; gap:10px; font-weight:700; font-size:1.02rem; font-family:var(--font-mono);}
.brand-mark{
  width:36px; height:36px; border-radius:var(--radius-sm);
  background:transparent; color:var(--primary);
  border:1px solid var(--primary-dim);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:0.8rem; font-weight:700;
}
.nav-links{display:flex; align-items:center; gap:4px;}
.nav-links a{
  padding:9px 14px; border-radius:var(--radius-sm); font-size:0.88rem; color:var(--ink-soft);
  font-family:var(--font-mono);
  transition:background .15s ease, color .15s ease;
}
.nav-links a:hover, .nav-links a.is-active{background:var(--surface-2); color:var(--primary);}
.nav-right{display:flex; align-items:center; gap:10px;}

.lang-toggle{
  font-family:var(--font-mono); font-size:0.78rem; font-weight:600;
  border:1px solid var(--line-strong); background:transparent;
  border-radius:var(--radius-sm); padding:8px 14px; cursor:pointer;
  color:var(--ink); display:flex; align-items:center; gap:6px;
}
.lang-toggle:hover{border-color:var(--primary); color:var(--primary);}

.menu-btn{
  display:none; border:1px solid var(--line); background:transparent;
  border-radius:var(--radius-sm); width:40px; height:40px; cursor:pointer;
  align-items:center; justify-content:center;
}
.menu-btn span, .menu-btn span::before, .menu-btn span::after{
  content:""; display:block; width:18px; height:2px; background:var(--ink); position:relative;
}
.menu-btn span::before{position:absolute; top:-6px;}
.menu-btn span::after{position:absolute; top:6px;}

@media (max-width: 860px){
  .nav-links{
    position:absolute; inset-inline:0; top:100%;
    background:var(--bg-deep); border-bottom:1px solid var(--line);
    flex-direction:column; align-items:stretch; padding:10px 24px 18px;
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{padding:12px 14px;}
  .menu-btn{display:flex;}
}

.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 22px; border-radius:var(--radius-sm); font-weight:600; font-size:0.92rem;
  font-family:var(--font-mono);
  border:1px solid transparent; cursor:pointer;
}
.btn-primary{background:var(--primary); color:#04222A;}
.btn-primary:hover{background:#9CEBF6;}
.btn-outline{border-color:var(--line-strong); background:transparent; color:var(--ink);}
.btn-outline:hover{border-color:var(--primary); color:var(--primary);}

.hero{padding-block:64px 30px; position:relative;}
.hero-grid{display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:start;}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;}}

.hero-id{display:flex; align-items:center; gap:16px; margin-bottom:26px;}
.hero-photo{
  width:64px; height:64px; border-radius:var(--radius);
  border:1px solid var(--line-strong); overflow:hidden; flex:none;
  background:var(--surface);
}
.hero-photo img{width:100%; height:100%; object-fit:cover;}
.hero-id-txt{font-family:var(--font-mono); font-size:0.8rem; color:var(--ink-faint);}
.hero-id-txt strong{display:block; color:var(--ink); font-size:0.95rem; font-weight:600;}

.hero h1{font-size:var(--step-4);}
.hero .role{
  font-family:var(--font-mono); color:var(--primary); font-size:var(--step-1);
  margin-top:16px; margin-bottom:18px;
}
.hero-actions{display:flex; gap:12px; margin-top:30px; flex-wrap:wrap;}

.dim-row{display:flex; gap:0; margin-top:48px; flex-wrap:wrap; border-top:1px dashed var(--line-strong);}
.dim{padding:18px 26px 0 0; border-inline-end:1px dashed var(--line-strong); flex:1; min-width:130px;}
html[dir="rtl"] .dim{padding:18px 0 0 26px;}
.dim:last-child{border-inline-end:none;}
.dim .num{font-family:var(--font-mono); font-size:1.6rem; font-weight:700; color:var(--primary);}
.dim .lbl{font-size:0.78rem; color:var(--ink-faint); margin-top:4px;}

.schema{
  background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius);
  overflow:hidden;
}
.schema-bar{
  display:flex; align-items:center; gap:8px;
  padding:10px 16px; border-bottom:1px solid var(--line);
  font-family:var(--font-mono); font-size:0.72rem; color:var(--ink-faint);
}
.schema-bar .dots{display:flex; gap:5px;}
.schema-bar .dots span{width:8px; height:8px; border-radius:50%; background:var(--line-strong);}
.schema-title{font-family:var(--font-mono); font-size:0.75rem; color:var(--ink-faint); letter-spacing:0.06em; padding:16px 18px 0;}

.tbl{margin:14px 18px 18px; border:1px solid var(--line); border-radius:var(--radius-sm); overflow:hidden;}
.tbl-head{
  background:var(--primary-tint); color:var(--primary);
  font-family:var(--font-mono); font-size:0.8rem; font-weight:700;
  padding:9px 14px; border-bottom:1px solid var(--line);
}
.tbl-row{
  display:flex; justify-content:space-between; gap:10px;
  padding:8px 14px; font-family:var(--font-mono); font-size:0.78rem;
  border-bottom:1px solid var(--grid-line); color:var(--ink-soft);
}
.tbl-row:last-child{border-bottom:none;}
.tbl-row .k{color:var(--ink);}
.tbl-row .t{color:var(--ink-faint);}
.tbl-connector{
  display:flex; align-items:center; justify-content:center; gap:8px;
  padding:2px 18px 10px; font-family:var(--font-mono); font-size:0.7rem; color:var(--gold);
}
.tbl-connector::before, .tbl-connector::after{content:""; flex:1; height:1px; background:var(--line-strong);}

.flow{
  background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius);
  padding:26px;
}
.flow-title{font-family:var(--font-mono); font-size:0.75rem; color:var(--ink-faint); letter-spacing:0.06em; text-transform:uppercase; margin-bottom:18px;}
.flow-nodes{display:flex; flex-direction:column; gap:0;}
.flow-node{display:flex; align-items:center; gap:14px; padding:14px 4px; position:relative;}
.flow-node .dot{
  width:32px; height:32px; flex:none;
  background:var(--primary-tint); color:var(--primary);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:0.78rem; font-weight:700;
  border:1px solid var(--primary-dim);
}
.flow-node.is-output .dot{background:var(--gold-tint); color:var(--gold); border-color:var(--gold);}
.flow-node .txt strong{display:block; font-size:0.93rem; color:var(--ink);}
.flow-node .txt span{font-size:0.82rem; color:var(--ink-soft);}
.flow-node:not(:last-child)::after{
  content:""; position:absolute; inset-inline-start:20px; top:46px; bottom:-6px;
  width:1px; background:var(--line-strong);
}

.redline{
  border-inline-start:2px solid var(--redline); background:var(--redline-tint);
  padding:12px 16px; font-family:var(--font-mono); font-size:0.82rem; color:#F6C9C4;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}

.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line);}
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:22px;}
@media (max-width:900px){.grid-3, .grid-2{grid-template-columns:1fr;}}

.card{background:var(--bg); padding:30px 28px;}
.card .idx{font-family:var(--font-mono); font-size:0.75rem; color:var(--primary); margin-bottom:16px;}
.card h3{font-size:1.05rem; margin-bottom:10px;}
.card p{color:var(--ink-soft); font-size:0.92rem; margin-bottom:0;}

.section-head{max-width:640px; margin-bottom:52px;}
.section-head h2{font-size:var(--step-3); margin-bottom:14px;}

.timeline{border-inline-start:1px dashed var(--line-strong); margin-inline-start:6px; padding-inline-start:34px;}
.tl-item{position:relative; padding-bottom:42px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:""; position:absolute; inset-inline-start:-40px; top:4px;
  width:10px; height:10px; background:var(--primary);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.tl-year{font-family:var(--font-mono); color:var(--primary); font-size:0.85rem; margin-bottom:6px;}
.tl-item h4{font-size:1.04rem; margin-bottom:6px;}
.tl-item p{color:var(--ink-soft); margin-bottom:0;}

.skill-groups{display:grid; grid-template-columns:repeat(2,1fr); gap:40px;}
@media (max-width:900px){.skill-groups{grid-template-columns:1fr;}}
.skill-group h4{font-family:var(--font-mono); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--gold); margin-bottom:16px;}
.skill-tags{display:flex; flex-wrap:wrap; gap:9px;}
.skill-tags span{
  font-size:0.84rem; font-family:var(--font-mono); padding:7px 13px; background:var(--surface); border-radius:var(--radius-sm); color:var(--ink-soft);
  border:1px solid var(--line);
}

.portrait{
  border:1px solid var(--line-strong); border-radius:var(--radius); overflow:hidden;
  background:var(--surface); aspect-ratio:4/5; max-width:340px;
}
.portrait img{width:100%; height:100%; object-fit:cover;}

.case{
  background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius);
  padding:40px; margin-bottom:30px;
}
.case-head{margin-bottom:28px;}
.case-tag{
  display:inline-block; font-family:var(--font-mono); font-size:0.7rem;
  background:var(--primary-tint); color:var(--primary); padding:5px 11px; border-radius:var(--radius-sm);
  margin-bottom:14px; letter-spacing:0.04em; border:1px solid var(--primary-dim);
}
.case-head h3{font-size:var(--step-2);}
.case-cols{display:grid; grid-template-columns:repeat(3,1fr); gap:26px; margin-top:8px;}
@media (max-width:900px){.case-cols{grid-template-columns:1fr;}}
.case-col h5{
  font-family:var(--font-mono); font-size:0.73rem; text-transform:uppercase; letter-spacing:0.08em;
  color:var(--gold); margin-bottom:12px;
}
.case-col p, .case-col li{color:var(--ink-soft); font-size:0.92rem;}
.case-col ul{margin:0; padding-inline-start:18px;}
.case-col li{margin-bottom:7px;}
.case-metrics{display:flex; gap:0; margin-top:28px; border-top:1px dashed var(--line-strong); flex-wrap:wrap;}
.case-metrics > div{padding:20px 26px 0 0; border-inline-end:1px dashed var(--line-strong); flex:1; min-width:130px;}
html[dir="rtl"] .case-metrics > div{padding:20px 0 0 26px;}
.case-metrics > div:last-child{border-inline-end:none;}
.case-metrics .num{font-family:var(--font-mono); font-weight:700; font-size:1.3rem; color:var(--primary);}
.case-metrics .lbl{font-size:0.78rem; color:var(--ink-faint); margin-top:3px;}
.case-stack{display:flex; flex-wrap:wrap; gap:8px; margin-top:22px;}
.case-stack span{font-family:var(--font-mono); font-size:0.74rem; background:var(--bg-deep); border:1px solid var(--line); color:var(--ink-soft); padding:5px 10px; border-radius:var(--radius-sm);}

.shot{
  border:1px solid var(--line-strong); border-radius:var(--radius); overflow:hidden;
  background:var(--bg-deep); margin-top:28px;
}
.shot-bar{
  display:flex; align-items:center; justify-content:space-between;
  padding:9px 14px; border-bottom:1px solid var(--line);
  font-family:var(--font-mono); font-size:0.72rem; color:var(--ink-faint);
}
.shot img{width:100%; display:block;}
.shot-grid{display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:18px;}
@media (max-width:700px){.shot-grid{grid-template-columns:1fr;}}

.mini-projects{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line);}
@media (max-width:900px){.mini-projects{grid-template-columns:1fr;}}

.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:40px;}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr;}}
.contact-list{display:flex; flex-direction:column; gap:1px; margin-top:26px; border:1px solid var(--line); border-radius:var(--radius);}
.contact-row{display:flex; align-items:center; gap:16px; padding:18px 20px; background:var(--surface);}
.contact-row .ic{
  width:38px; height:38px; border-radius:var(--radius-sm); background:var(--primary-tint); color:var(--primary);
  display:flex; align-items:center; justify-content:center; flex:none;
  border:1px solid var(--primary-dim);
}
.contact-text{display:flex; flex-direction:column; gap:3px;}
.contact-row .lbl{font-size:0.75rem; color:var(--ink-faint); font-family:var(--font-mono);}
.contact-row .val{font-weight:600; font-size:0.98rem; font-family:var(--font-mono);}

footer{border-top:1px solid var(--line); padding-block:34px; margin-top:40px;}
.footer-row{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px;}
.footer-row small{color:var(--ink-faint); font-size:0.82rem; font-family:var(--font-mono);}

.wa-float{
  position:fixed; bottom:26px; inset-inline-end:26px; z-index:50;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; color:#fff; display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 24px -6px rgba(37,211,102,0.5);
  transition:transform .15s ease;
}
.wa-float:hover{transform:scale(1.07);}

.reveal{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease;}
.reveal.is-visible{opacity:1; transform:translateY(0);}

@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1; transform:none; transition:none;}
  html{scroll-behavior:auto;}
}

.page-hero{padding-block:60px 20px;}
.page-hero h1{font-size:var(--step-3);}