/* =========================================================================
   backserver.ir — DevOps & Infrastructure Portfolio
   Author: Mostafa Mousavi (mousavi.dev)
   ========================================================================= */

:root {
  --bg:            #060a12;
  --bg-2:          #0a111d;
  --bg-3:          #0e1726;
  --surface:       #0d1524;
  --surface-2:     #121c2e;
  --border:        rgba(116, 158, 224, 0.12);
  --border-strong: rgba(116, 158, 224, 0.28);

  --text:          #e6edf6;
  --text-soft:     #aab6c9;
  --text-dim:      #6b7a90;

  --accent:        #22e6a3;   /* signal green   */
  --accent-2:      #2ea0ff;   /* node blue      */
  --accent-3:      #a878ff;   /* k8s purple     */
  --accent-warn:   #ffb547;   /* amber          */
  --accent-glow:   rgba(34, 230, 163, 0.45);

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  --radius:   16px;
  --radius-sm: 10px;
  --shadow:   0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --maxw:     1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Layered animated background ------------------------------------------- */
.bg-fx {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 700px at 12% -10%, rgba(46, 160, 255, 0.10), transparent 60%),
    radial-gradient(900px 600px at 95% 0%, rgba(168, 120, 255, 0.10), transparent 55%),
    radial-gradient(800px 800px at 50% 120%, rgba(34, 230, 163, 0.08), transparent 60%),
    var(--bg);
}
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(116, 158, 224, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(116, 158, 224, 0.045) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 25%, #000 40%, transparent 100%);
  pointer-events: none;
}
#particles { position: fixed; inset: 0; z-index: -1; pointer-events: none; }

::selection { background: var(--accent-glow); color: #04140e; }

/* Scrollbar */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent-2), var(--accent));
  border-radius: 10px;
  border: 2px solid var(--bg-2);
}

/* Layout helpers -------------------------------------------------------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }
.section { padding: 110px 0; position: relative; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-2); }

.eyebrow {
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--accent); }

.section-title {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
  margin: 0 0 16px;
}
.section-lead { color: var(--text-soft); max-width: 640px; font-size: 1.05rem; }
.text-grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2) 55%, var(--accent-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Navbar ---------------------------------------------------------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8, 13, 22, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: .65rem; font-weight: 800; font-size: 1.12rem; letter-spacing: -.01em; color: var(--text); }
.brand:hover { color: var(--text); }
.brand-badge {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 11px; font-size: 1rem; color: #05140d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 22px -4px var(--accent-glow);
}
.brand b { color: var(--accent); }
.brand small { font-family: var(--mono); font-size: .62rem; color: var(--text-dim); display: block; letter-spacing: .12em; font-weight: 400; }

.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--text-soft); font-size: .92rem; font-weight: 500;
  padding: 9px 14px; border-radius: 9px; transition: all .2s; position: relative;
}
.nav-links a:hover { color: var(--text); background: rgba(116, 158, 224, 0.08); }
.btn-nav {
  border: 1px solid var(--border-strong) !important;
  color: var(--text) !important;
}
.btn-nav:hover { border-color: var(--accent) !important; color: var(--accent) !important; background: transparent !important; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border-strong);
  color: var(--text); width: 44px; height: 44px; border-radius: 10px; font-size: 1.2rem; cursor: pointer;
}

/* Buttons --------------------------------------------------------------- */
.btn-x {
  display: inline-flex; align-items: center; gap: .6rem;
  font-weight: 600; font-size: .96rem; padding: 13px 24px;
  border-radius: 12px; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s, box-shadow .25s, background .25s; white-space: nowrap;
}
.btn-x:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #04140e;
  box-shadow: 0 10px 30px -8px var(--accent-glow);
}
.btn-primary:hover { color: #04140e; box-shadow: 0 14px 38px -8px var(--accent-glow); transform: translateY(-2px); }
.btn-ghost { background: rgba(116,158,224,0.06); border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* HERO ------------------------------------------------------------------ */
.hero { padding-top: 150px; padding-bottom: 90px; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }

.status-pill {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--mono); font-size: .78rem; color: var(--text-soft);
  background: rgba(34, 230, 163, 0.06); border: 1px solid rgba(34, 230, 163, 0.25);
  padding: 7px 14px; border-radius: 100px; margin-bottom: 26px;
}
.dot-live { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 var(--accent-glow); animation: pulse 2s infinite; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(34, 230, 163, 0.6); }
  70%  { box-shadow: 0 0 0 9px rgba(34, 230, 163, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 230, 163, 0); }
}

.hero h1 {
  font-size: clamp(2.4rem, 5.4vw, 4rem);
  font-weight: 800; letter-spacing: -.03em; line-height: 1.04; margin: 0 0 20px;
}
.hero h1 .typed-wrap { color: var(--accent); }
.hero p.lead { font-size: 1.16rem; color: var(--text-soft); max-width: 560px; margin: 0 0 34px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }

.hero-stats { display: flex; gap: 34px; flex-wrap: wrap; }
.hero-stats .stat b {
  font-family: var(--mono); font-size: 1.7rem; font-weight: 700;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; display: block; line-height: 1.1;
}
.hero-stats .stat span { font-size: .82rem; color: var(--text-dim); }

/* Terminal window ------------------------------------------------------- */
.terminal {
  background: linear-gradient(180deg, #0b1320, #080d18);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: var(--shadow), 0 0 0 1px rgba(34,230,163,0.04);
  overflow: hidden;
  position: relative;
}
.terminal::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(120deg, transparent 40%, rgba(34,230,163,0.05) 50%, transparent 60%);
  background-size: 250% 250%; animation: sheen 7s ease-in-out infinite;
}
@keyframes sheen { 0%,100% { background-position: 0% 0%; } 50% { background-position: 100% 100%; } }

.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; background: #0a101c; border-bottom: 1px solid var(--border);
}
.term-dot { width: 12px; height: 12px; border-radius: 50%; }
.term-dot.r { background: #ff5f57; } .term-dot.y { background: #febc2e; } .term-dot.g { background: #28c840; }
.term-title { margin-left: 10px; font-family: var(--mono); font-size: .78rem; color: var(--text-dim); }
.term-title i { color: var(--accent); margin-right: 6px; }
.term-body {
  font-family: var(--mono); font-size: .86rem; line-height: 1.85;
  padding: 20px 20px 24px; min-height: 340px; color: var(--text-soft);
}
.term-body .ln { white-space: pre-wrap; word-break: break-word; }
.c-prompt { color: var(--accent); } .c-user { color: var(--accent-2); } .c-path { color: var(--accent-3); }
.c-ok { color: var(--accent); } .c-warn { color: var(--accent-warn); } .c-dim { color: var(--text-dim); }
.c-key { color: var(--accent-2); }
.term-cursor { display: inline-block; width: 9px; height: 1.05em; background: var(--accent); vertical-align: text-bottom; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* Marquee of tech ------------------------------------------------------- */
.marquee { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(10,16,28,0.6); overflow: hidden; padding: 22px 0; }
.marquee-track { display: flex; gap: 56px; width: max-content; animation: scrollx 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { display: inline-flex; align-items: center; gap: .65rem; font-family: var(--mono); font-size: 1rem; color: var(--text-dim); white-space: nowrap; }
.marquee-track i { font-size: 1.4rem; }
@keyframes scrollx { to { transform: translateX(-50%); } }

/* Cards / services ------------------------------------------------------ */
.grid { display: grid; gap: 22px; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-3));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: transform .3s cubic-bezier(.2,.7,.2,1), border-color .3s, box-shadow .3s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, var(--accent), transparent 35%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.card:hover::before { opacity: 1; }
.card .ic {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  font-size: 1.4rem; margin-bottom: 18px;
  background: rgba(34, 230, 163, 0.08); color: var(--accent);
  border: 1px solid rgba(34, 230, 163, 0.2);
}
.card h3 { font-size: 1.2rem; font-weight: 700; margin: 0 0 9px; letter-spacing: -.01em; }
.card p { color: var(--text-soft); font-size: .95rem; margin: 0 0 14px; }
.card .tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
  font-family: var(--mono); font-size: .72rem; color: var(--text-dim);
  padding: 4px 10px; border-radius: 7px; background: rgba(116,158,224,0.06); border: 1px solid var(--border);
}
/* per-card accent variants */
.card.v2 .ic { background: rgba(46,160,255,0.08); color: var(--accent-2); border-color: rgba(46,160,255,0.2); }
.card.v2::before { background: linear-gradient(140deg, var(--accent-2), transparent 35%); }
.card.v3 .ic { background: rgba(168,120,255,0.08); color: var(--accent-3); border-color: rgba(168,120,255,0.2); }
.card.v3::before { background: linear-gradient(140deg, var(--accent-3), transparent 35%); }
.card.v4 .ic { background: rgba(255,181,71,0.08); color: var(--accent-warn); border-color: rgba(255,181,71,0.2); }
.card.v4::before { background: linear-gradient(140deg, var(--accent-warn), transparent 35%); }

/* Server rack visual ---------------------------------------------------- */
.rack-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.rack {
  background: linear-gradient(180deg, #0c1422, #080d17);
  border: 1px solid var(--border-strong); border-radius: 18px; padding: 18px;
  box-shadow: var(--shadow);
}
.rack-unit {
  display: flex; align-items: center; gap: 14px;
  background: linear-gradient(90deg, #0e1828, #0b1322);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 13px 16px; margin-bottom: 12px; position: relative; overflow: hidden;
}
.rack-unit:last-child { margin-bottom: 0; }
.rack-leds { display: flex; gap: 5px; }
.led { width: 8px; height: 8px; border-radius: 50%; background: #1d2a3e; }
.led.on { background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: led 1.4s infinite; }
.led.on.b { background: var(--accent-2); box-shadow: 0 0 8px var(--accent-2); animation-delay: .3s; }
.led.on.a { background: var(--accent-warn); box-shadow: 0 0 8px var(--accent-warn); animation-delay: .7s; }
@keyframes led { 50% { opacity: .35; } }
.rack-unit .ru-name { font-family: var(--mono); font-size: .82rem; color: var(--text); }
.rack-unit .ru-sub { font-family: var(--mono); font-size: .68rem; color: var(--text-dim); }
.rack-bars { margin-left: auto; display: flex; align-items: flex-end; gap: 3px; height: 26px; }
.rack-bars i { width: 4px; background: var(--accent-2); border-radius: 2px; opacity: .8; animation: eq 1.2s ease-in-out infinite; }
@keyframes eq { 0%,100% { height: 6px; } 50% { height: 24px; } }

.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.metric {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px;
}
.metric .mtop { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.metric .mtop span { font-family: var(--mono); font-size: .74rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .08em; }
.metric .mtop i { color: var(--accent); }
.metric b { font-family: var(--mono); font-size: 1.55rem; font-weight: 700; color: var(--text); }
.bar { height: 6px; border-radius: 6px; background: rgba(116,158,224,0.1); overflow: hidden; margin-top: 10px; }
.bar i { display: block; height: 100%; border-radius: 6px; background: linear-gradient(90deg, var(--accent-2), var(--accent)); width: 0; transition: width 1.4s ease; }

/* Pipeline -------------------------------------------------------------- */
.pipeline { display: flex; flex-wrap: wrap; align-items: stretch; gap: 0; counter-reset: step; }
.pstep {
  flex: 1 1 160px; min-width: 150px; position: relative;
  background: linear-gradient(180deg, var(--surface), var(--bg-3));
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 22px 18px; margin: 8px;
  transition: border-color .3s, transform .3s;
}
.pstep:hover { border-color: var(--border-strong); transform: translateY(-4px); }
.pstep .pnum {
  font-family: var(--mono); font-size: .72rem; color: var(--accent);
  border: 1px solid rgba(34,230,163,0.3); border-radius: 6px; padding: 2px 8px; display: inline-block; margin-bottom: 12px;
}
.pstep i.pico { font-size: 1.5rem; color: var(--accent-2); display: block; margin-bottom: 10px; }
.pstep h4 { font-size: 1rem; margin: 0 0 5px; }
.pstep p { font-size: .85rem; color: var(--text-dim); margin: 0; }

/* Process / about ------------------------------------------------------- */
.feature-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 14px; }
.feature-list li { display: flex; gap: 13px; align-items: flex-start; }
.feature-list .fi {
  flex: none; width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center;
  background: rgba(34,230,163,0.1); color: var(--accent); font-size: .85rem; margin-top: 2px;
}
.feature-list strong { display: block; font-size: .98rem; }
.feature-list span { color: var(--text-dim); font-size: .88rem; }

.code-panel {
  background: #080d18; border: 1px solid var(--border-strong); border-radius: 14px;
  font-family: var(--mono); font-size: .82rem; line-height: 1.9; box-shadow: var(--shadow); overflow: hidden;
}
.code-panel .cp-bar { display: flex; align-items: center; gap: 10px; padding: 11px 16px; border-bottom: 1px solid var(--border); background: #0a101c; }
.code-panel .cp-bar span { font-family: var(--mono); font-size: .76rem; color: var(--text-dim); }
.code-panel pre { margin: 0; padding: 18px 20px; overflow-x: auto; color: var(--text-soft); }
.code-panel .k { color: var(--accent-3); } .code-panel .s { color: var(--accent); } .code-panel .n { color: var(--accent-warn); } .code-panel .cm { color: var(--text-dim); } .code-panel .p { color: var(--accent-2); }

/* Stats band ------------------------------------------------------------ */
.statband { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.statband .sb {
  text-align: center; padding: 30px 18px;
  background: linear-gradient(180deg, var(--surface), var(--bg-3));
  border: 1px solid var(--border); border-radius: var(--radius);
}
.statband .sb b { font-family: var(--mono); font-size: 2.3rem; font-weight: 700; display: block; line-height: 1;
  background: linear-gradient(120deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.statband .sb span { color: var(--text-dim); font-size: .9rem; margin-top: 8px; display: block; }
.statband .sb i { color: var(--accent); font-size: 1.2rem; margin-bottom: 12px; display: block; }

/* Tech stack chips ------------------------------------------------------ */
.stack-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px,1fr)); gap: 14px; }
.chip {
  display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center;
  padding: 24px 14px; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--border); transition: all .25s;
}
.chip:hover { transform: translateY(-5px); border-color: var(--border-strong); background: var(--surface-2); }
.chip i { font-size: 2.1rem; transition: transform .25s; }
.chip:hover i { transform: scale(1.12); }
.chip span { font-family: var(--mono); font-size: .8rem; color: var(--text-soft); }

/* Contact --------------------------------------------------------------- */
.contact-card {
  background: linear-gradient(140deg, var(--surface-2), var(--bg-3));
  border: 1px solid var(--border-strong); border-radius: 22px; padding: 48px;
  position: relative; overflow: hidden; box-shadow: var(--shadow);
}
.contact-card::before {
  content: ""; position: absolute; top: -60%; right: -10%; width: 460px; height: 460px;
  background: radial-gradient(circle, rgba(34,230,163,0.16), transparent 65%); pointer-events: none;
}
.contact-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.clink {
  display: inline-flex; align-items: center; gap: .6rem; padding: 12px 18px; border-radius: 11px;
  background: rgba(116,158,224,0.05); border: 1px solid var(--border); color: var(--text-soft); font-family: var(--mono); font-size: .9rem;
}
.clink:hover { border-color: var(--accent); color: var(--accent); background: rgba(34,230,163,0.05); }
.clink i { font-size: 1.05rem; }

/* Footer ---------------------------------------------------------------- */
.footer { border-top: 1px solid var(--border); padding: 56px 0 34px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.footer p { color: var(--text-dim); font-size: .92rem; }
.footer h5 { font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; color: var(--text-soft); margin: 0 0 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.footer ul a { color: var(--text-dim); font-size: .92rem; }
.footer ul a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  font-family: var(--mono); font-size: .82rem; color: var(--text-dim);
}
.footer-bottom .made { display: inline-flex; align-items: center; gap: .5rem; }
.footer-bottom .made b { color: var(--accent); font-weight: 700; }
.heart { color: #ff5f7e; animation: beat 1.3s infinite; display: inline-block; }
@keyframes beat { 0%,100% { transform: scale(1);} 50% { transform: scale(1.25);} }

/* social */
.socials { display: flex; gap: 10px; }
.socials a {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(116,158,224,0.06); border: 1px solid var(--border); color: var(--text-soft);
}
.socials a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

/* Back to top ----------------------------------------------------------- */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 900;
  width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #04140e; font-size: 1.1rem;
  border: none; cursor: pointer; box-shadow: 0 12px 30px -8px var(--accent-glow);
  opacity: 0; transform: translateY(16px); pointer-events: none; transition: all .3s;
}
.to-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* Divider label */
.center-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.center-head .section-lead { margin-inline: auto; }

/* Responsive ------------------------------------------------------------ */
@media (max-width: 992px) {
  .hero-grid, .rack-wrap { grid-template-columns: 1fr; }
  .cols-4 { grid-template-columns: repeat(2,1fr); }
  .cols-3 { grid-template-columns: repeat(2,1fr); }
  .statband { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .rack-wrap { gap: 30px; }
}
@media (max-width: 760px) {
  .section { padding: 78px 0; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 4px; align-items: stretch;
    background: rgba(8,13,22,0.97); backdrop-filter: blur(14px); padding: 16px 18px 22px;
    border-bottom: 1px solid var(--border); transform: translateY(-130%); transition: transform .3s; max-height: calc(100vh - 72px); overflow:auto;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 14px; }
  .nav-toggle { display: grid; place-items: center; }
  .cols-3, .cols-4, .cols-2, .metric-grid { grid-template-columns: 1fr; }
  .statband, .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-card { padding: 30px 22px; }
  .hero-stats { gap: 22px; }
}
@media (max-width: 440px) {
  .statband, .footer-grid { grid-template-columns: 1fr; }
}

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