/* =========================================================
   ahmedsystem — style.css
   Pure hand-written CSS. No framework. Mobile-first & fast.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root{
  --bg:#07090a;
  --bg-alt:#0c0f10;
  --card:#0e1214;
  --card-hover:#121718;
  --border:#1d2426;
  --border-strong:#2a3336;
  --text:#f2f5f6;
  --text-muted:#a6b2b6;
  --text-dim:#6f7b7f;
  --accent:#00bcd4;
  --accent-dim:#0a8fa3;
  --accent-soft:rgba(0,188,212,.12);
  --accent-contrast:#03181b;
  --radius:10px;
  --radius-lg:16px;
  --maxw:1180px;
  --shadow:0 8px 30px -12px rgba(0,0,0,.6);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

[data-theme="light"]{
  color-scheme: light;
  --bg:#f6f8f9;
  --bg-alt:#eef2f3;
  --card:#ffffff;
  --card-hover:#f2f6f7;
  --border:#e0e6e8;
  --border-strong:#cbd4d7;
  --text:#0c1416;
  --text-muted:#465257;
  --text-dim:#7b878b;
  --accent:#0891a3;
  --accent-dim:#067083;
  --accent-soft:rgba(8,145,163,.10);
  --accent-contrast:#ffffff;
  --shadow:0 8px 24px -14px rgba(15,30,33,.18);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}

body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background-color .25s ease, color .25s ease;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

.container{max-width:var(--maxw);margin-inline:auto;padding-inline:20px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:12px;top:-60px;background:var(--accent);color:var(--accent-contrast);padding:10px 16px;border-radius:8px;z-index:200;font-weight:600;transition:top .2s}
.skip-link:focus{top:12px}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- Prompt / terminal-signature elements ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:.5em;
}
.eyebrow::before{content:"//";color:var(--text-dim)}
.prompt::before{content:"$ ";color:var(--accent);font-family:var(--font-mono)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.brand{display:flex;align-items:baseline;gap:2px;font-family:var(--font-mono);font-weight:700;font-size:1.15rem;letter-spacing:-.01em}
.brand .dot{color:var(--accent)}
.nav-links{display:none;gap:28px;align-items:center}
.nav-links a{font-size:.92rem;color:var(--text-muted);font-weight:500;position:relative;padding-block:4px}
.nav-links a:hover, .nav-links a:focus-visible{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);transition:width .2s}
.nav-links a:hover::after{width:100%}

.nav-controls{display:flex;align-items:center;gap:8px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:8px;background:var(--card);
  font-size:.95rem;transition:border-color .2s, color .2s, transform .15s;
}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
.lang-toggle{font-family:var(--font-mono);font-weight:700;font-size:.72rem;width:auto;padding-inline:10px;letter-spacing:.03em}
.menu-toggle{display:inline-flex}
@media (min-width:840px){
  .nav-links{display:flex}
  .menu-toggle{display:none}
}

.mobile-menu{
  display:none;flex-direction:column;gap:2px;
  border-top:1px solid var(--border);
  background:var(--bg-alt);
}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:14px 20px;border-bottom:1px solid var(--border);color:var(--text-muted);font-size:.95rem}
.mobile-menu a:hover{color:var(--accent);background:var(--card)}
@media (min-width:840px){.mobile-menu{display:none !important}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:8px;font-weight:600;font-size:.94rem;
  transition:transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--accent-contrast);box-shadow:0 10px 24px -10px var(--accent-soft)}
.btn-primary:hover{transform:translateY(-2px);background:var(--accent-dim)}
.btn-outline{border:1.5px solid var(--border-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.btn-whatsapp{background:#25D366;color:#04160a}
.btn-whatsapp:hover{transform:translateY(-2px);filter:brightness(1.05)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:96px 0 72px;
  overflow:hidden;
  background:
    radial-gradient(60% 55% at 80% 0%, var(--accent-soft), transparent 60%),
    radial-gradient(45% 40% at 10% 100%, var(--accent-soft), transparent 60%);
}
.hero-grid{
  position:absolute;inset:0;z-index:-1;opacity:.35;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(60% 60% at 50% 20%, #000, transparent 80%);
}
.hero-inner{max-width:760px}
.tagline-pill{
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.03em;
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--border-strong);color:var(--accent);
  padding:7px 14px;border-radius:999px;margin-bottom:22px;background:var(--card);
}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 var(--accent-soft);animation:pulse 2.4s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(0,188,212,.5)}
  70%{box-shadow:0 0 0 8px rgba(0,188,212,0)}
  100%{box-shadow:0 0 0 0 rgba(0,188,212,0)}
}
.h1-brand{font-size:clamp(2.6rem,7vw,4.6rem);font-weight:800;letter-spacing:-.03em;line-height:1.02;font-family:var(--font-mono)}
.h1-brand .dot{color:var(--accent)}
.hero-role{font-size:clamp(1.15rem,3vw,1.7rem);color:var(--accent);font-weight:700;margin:10px 0 20px}
.hero-desc{color:var(--text-muted);font-size:1.05rem;max-width:60ch;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:64px}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;border-top:1px solid var(--border);padding-top:32px;max-width:640px}
.stat b{display:block;font-size:2rem;font-weight:800;color:var(--accent);font-family:var(--font-mono)}
.stat span{color:var(--text-muted);font-size:.82rem}

/* ---------- Section shell ---------- */
section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:680px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:800;letter-spacing:-.02em;margin-top:10px}
.section-head p{color:var(--text-muted);margin-top:12px;font-size:1.02rem}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr;gap:40px}
.about-copy{color:var(--text-muted);display:flex;flex-direction:column;gap:16px;font-size:1.02rem}
.about-copy strong{color:var(--text)}
.ambition{
  border-top:1px solid var(--border);padding-top:20px;margin-top:8px;
}
.ambition .eyebrow{margin-bottom:8px}
.ambition p{color:var(--text-muted)}

.principle-card{
  background:var(--card);border:1px solid var(--border);border-left:3px solid var(--accent);
  border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow);
}
.principle-card h3{font-size:1.2rem;margin-bottom:18px;display:flex;align-items:center;gap:10px;font-family:var(--font-mono)}
.principle-list{display:flex;flex-direction:column;gap:16px}
.principle-list li{color:var(--text-muted);font-size:.94rem}
.principle-list b{color:var(--text);display:block;font-size:.96rem;margin-bottom:3px}
.principle-list .prompt{color:var(--accent);font-family:var(--font-mono);font-size:.85rem}

@media (min-width:960px){
  .about-grid{grid-template-columns:1.6fr 1fr;align-items:start}
}

/* ---------- Cards grid (services / skills) ---------- */
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:620px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:960px){.grid-3{grid-template-columns:repeat(3,1fr)}}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:26px;transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--accent-dim);box-shadow:var(--shadow);background:var(--card-hover)}
.card-icon{
  width:44px;height:44px;border-radius:10px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:16px;
}
.card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.card p{color:var(--text-muted);font-size:.94rem}

/* ---------- Projects ---------- */
.projects-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:840px){.projects-grid{grid-template-columns:repeat(2,1fr)}}

.project-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;transition:border-color .2s, transform .2s;
}
.project-card:hover{border-color:var(--accent-dim);transform:translateY(-3px)}
.project-media{position:relative;aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden}
.project-media img{width:100%;height:100%;object-fit:cover;loading:lazy}
.project-tag{
  position:absolute;top:14px;right:14px;font-family:var(--font-mono);font-size:.68rem;
  background:color-mix(in srgb, var(--bg) 70%, transparent);border:1px solid var(--accent-dim);color:var(--accent);
  padding:5px 11px;border-radius:999px;backdrop-filter:blur(4px);
}
.project-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.project-body h3{font-size:1.28rem;font-weight:700}
.project-body p{color:var(--text-muted);font-size:.94rem}
.project-stat{font-family:var(--font-mono);font-weight:800;color:var(--accent);font-size:1.4rem}
.tech-list{display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--border);padding-top:14px;margin-top:auto}
.tech-tag{
  font-size:.72rem;background:var(--bg-alt);border:1px solid var(--border);color:var(--text-muted);
  padding:5px 10px;border-radius:999px;font-family:var(--font-mono);
}
.project-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 24px 22px}
.share-wa{
  display:inline-flex;align-items:center;gap:6px;font-size:.78rem;color:var(--text-dim);
  border:1px solid var(--border);padding:6px 12px;border-radius:999px;transition:color .2s,border-color .2s;
}
.share-wa:hover{color:#25D366;border-color:#25D366}

/* ---------- Skills ---------- */
.skill-group h3{
  font-family:var(--font-mono);color:var(--accent);font-size:1.02rem;font-weight:700;
  border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:16px;
}
.skill-group ul{display:flex;flex-direction:column;gap:10px}
.skill-group li{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:.92rem}
.skill-group li i{color:var(--accent);font-size:.8rem}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:960px){.contact-grid{grid-template-columns:1fr 2fr}}
.contact-info{display:flex;flex-direction:column;gap:16px}
.info-card{display:flex;gap:16px;align-items:flex-start}
.info-card .card-icon{flex-shrink:0;margin-bottom:0}
.info-card h3{font-size:.95rem;color:var(--text-muted);font-weight:600;margin-bottom:4px}
.info-card p, .info-card a{font-size:1rem;font-weight:600}
.info-card a:hover{color:var(--accent)}

.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(20px,4vw,40px)}
.form-row{display:grid;grid-template-columns:1fr;gap:14px;margin-bottom:14px}
@media (min-width:620px){.form-row{grid-template-columns:1fr 1fr}}
.field{
  width:100%;padding:13px 15px;border-radius:8px;border:1px solid var(--border);
  background:var(--bg);color:var(--text);font-size:.95rem;transition:border-color .2s;
}
.field:focus{border-color:var(--accent)}
textarea.field{resize:vertical;min-height:130px;margin-bottom:20px}
.form-note{font-size:.8rem;color:var(--text-dim);margin-top:12px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--bg-alt);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:720px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
.footer-brand p{color:var(--text-dim);font-size:.88rem;margin-top:10px;max-width:36ch}
.footer-col h4{font-family:var(--font-mono);font-size:.85rem;color:var(--accent);margin-bottom:14px;letter-spacing:.03em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-muted);font-size:.9rem}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);margin-top:40px;padding-top:22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;color:var(--text-dim);font-size:.8rem;font-family:var(--font-mono)}

/* ---------- Floating WhatsApp ---------- */
.wa-float{
  position:fixed;bottom:22px;right:22px;z-index:150;
  width:56px;height:56px;border-radius:50%;background:#25D366;color:#04160a;
  display:flex;align-items:center;justify-content:center;font-size:1.5rem;
  box-shadow:0 10px 26px -6px rgba(0,0,0,.4);transition:transform .2s;
}
.wa-float:hover{transform:scale(1.08)}

/* ---------- Utility ---------- */
.center{text-align:center}
.mx-auto{margin-inline:auto}