/* ============================================================
   DunApps — Main Stylesheet
   ============================================================ */

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #09090f;
  --bg2:      #0f0f1a;
  --bg3:      #141425;
  --surface:  #1a1a2e;
  --border:   rgba(139, 92, 246, .18);
  --purple:   #7c3aed;
  --purple-l: #a855f7;
  --cyan:     #06b6d4;
  --cyan-l:   #22d3ee;
  --accent:   #f59e0b;
  --green:    #22c55e;
  --red:      #ef4444;
  --text:     #e2e8f0;
  --text-m:   #94a3b8;
  --text-s:   #64748b;
  --radius:   14px;
  --glow:     0 0 40px rgba(124, 58, 237, .25);
  --transition: .25s ease;
}

html { scroll-behavior: smooth; scroll-padding-top: 70px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

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

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--purple); border-radius: 3px; }

/* ===== ICON STYLES (Lucide) ===== */
[data-lucide] {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}
[data-lucide] svg { display: block; }

/* ===== LAYOUT UTILITIES ===== */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section    { padding: 100px 0; }

/* ===== TYPOGRAPHY UTILITIES ===== */
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .75rem; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--purple-l);
  background: rgba(124, 58, 237, .12); border: 1px solid rgba(124, 58, 237, .3);
  padding: 5px 14px; border-radius: 99px; margin-bottom: 18px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.2; margin-bottom: 16px;
}

.section-sub { color: var(--text-m); font-size: 1.05rem; }

.grad {
  background: linear-gradient(135deg, var(--purple-l) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 99px; font-weight: 600;
  font-size: .95rem; cursor: pointer; transition: all var(--transition);
  border: none; font-family: inherit; text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple) 0%, var(--cyan) 100%);
  color: #fff; box-shadow: 0 4px 24px rgba(124, 58, 237, .4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(124, 58, 237, .6); }

.btn-outline {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--purple-l); color: var(--purple-l); background: rgba(124, 58, 237, .08); }

/* ===== TAGS ===== */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: .72rem; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; background: rgba(124, 58, 237, .15);
  color: var(--purple-l); border: 1px solid rgba(124, 58, 237, .25);
  margin: 3px 2px;
}
.tag.cyan  { background: rgba(6, 182, 212, .15);  color: var(--cyan-l);  border-color: rgba(6, 182, 212, .25); }
.tag.amber { background: rgba(245, 158, 11, .15); color: var(--accent); border-color: rgba(245, 158, 11, .25); }
.tag.green { background: rgba(34, 197, 94, .15);  color: var(--green);   border-color: rgba(34, 197, 94, .25); }
.tag.red   { background: rgba(239, 68, 68, .15);  color: var(--red);     border-color: rgba(239, 68, 68, .25); }

/* ===== CARD ===== */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: rgba(124, 58, 237, .5); transform: translateY(-4px); box-shadow: var(--glow); }

/* ============================================================
   NAV
   ============================================================ */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(9, 9, 15, .85); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}

.nav-logo { font-size: 1.45rem; font-weight: 900; letter-spacing: -.02em; }
.nav-logo .dun  { color: #fff; }
.nav-logo .apps {
  background: linear-gradient(135deg, var(--purple-l), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a { font-size: .9rem; color: var(--text-m); font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: #fff; }

.nav-right { display: flex; align-items: center; gap: 16px; }

.lang-switcher { display: flex; gap: 6px; }
.lang-btn {
  background: none; border: 1px solid var(--border); color: var(--text-m);
  padding: 4px 10px; border-radius: 6px; font-size: .78rem; font-weight: 600;
  cursor: pointer; transition: all .2s; font-family: inherit;
}
.lang-btn.active,
.lang-btn:hover { border-color: var(--purple-l); color: var(--purple-l); background: rgba(124, 58, 237, .1); }

.nav-cta { padding: 10px 20px; font-size: .85rem; }

.hamburger {
  display: none; background: none; border: 1px solid var(--border);
  padding: 8px; border-radius: 8px; cursor: pointer;
  flex-direction: column; gap: 4px;
  width: 38px; height: 38px; align-items: center; justify-content: center;
}
.hamburger span {
  display: block; width: 18px; height: 2px;
  background: var(--text); transition: all .25s; border-radius: 2px;
}

.mobile-menu {
  display: flex; flex-direction: column; gap: 0;
  background: var(--bg2); border-top: 1px solid var(--border);
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease;
}
.mobile-menu.open { max-height: 480px; }
.mobile-menu a {
  padding: 15px 24px; border-bottom: 1px solid var(--border);
  color: var(--text-m); font-weight: 500; font-size: .95rem;
  transition: color .15s, background .15s;
}
.mobile-menu a:hover { color: #fff; background: rgba(124, 58, 237, .06); }
.mobile-lang { display: flex; gap: 8px; padding: 14px 24px; }

/* ============================================================
   HERO
   ============================================================ */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding-top: 70px;
}

.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-blob { position: absolute; border-radius: 50%; filter: blur(100px); opacity: .35; }
.blob1 { width: 600px; height: 600px; background: radial-gradient(circle, #7c3aed 0%, transparent 70%); top: -150px; right: -100px; }
.blob2 { width: 400px; height: 400px; background: radial-gradient(circle, #06b6d4 0%, transparent 70%); bottom: 0; left: -80px; }
.blob3 { width: 300px; height: 300px; background: radial-gradient(circle, #f59e0b 0%, transparent 70%); top: 40%; left: 35%; opacity: .15; }

.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; position: relative; z-index: 1;
  padding: 80px 0 60px;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(124, 58, 237, .12); border: 1px solid rgba(124, 58, 237, .3);
  border-radius: 99px; padding: 6px 16px 6px 10px;
  font-size: .8rem; font-weight: 600; color: var(--purple-l);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--purple-l); animation: pulse 2s infinite;
}

.hero-h1 {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 900; line-height: 1.1; letter-spacing: -.03em; margin-bottom: 24px;
}

.hero-p { font-size: 1.1rem; color: var(--text-m); margin-bottom: 36px; max-width: 480px; }

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: 32px; margin-top: 56px; padding-top: 40px;
  border-top: 1px solid var(--border);
}
.stat-n { font-size: 2rem; font-weight: 800; }
.stat-l { font-size: .8rem; color: var(--text-m); font-weight: 500; }

/* Code window */
.app-window {
  width: 100%; max-width: 460px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.6), 0 0 0 1px rgba(124,58,237,.15);
}
.app-titlebar {
  background: var(--bg3); padding: 14px 20px;
  display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--border);
}
.dot-r { width: 11px; height: 11px; border-radius: 50%; background: #ff5f56; }
.dot-y { width: 11px; height: 11px; border-radius: 50%; background: #ffbd2e; }
.dot-g { width: 11px; height: 11px; border-radius: 50%; background: #27c93f; }
.app-title-text { flex: 1; text-align: center; font-size: .78rem; color: var(--text-s); font-weight: 500; }
.app-body { padding: 24px; }

.code-line { display: flex; gap: 10px; margin-bottom: 10px; font-size: .82rem; font-family: 'Courier New', monospace; }
.ln  { color: var(--text-s); min-width: 20px; user-select: none; }
.kw  { color: #c678dd; }
.fn  { color: #61afef; }
.str { color: #98c379; }
.cm  { color: #5c6370; font-style: italic; }
.nm  { color: #e5c07b; }
.op  { color: var(--text-m); }
.cursor {
  display: inline-block; width: 2px; height: 14px; background: var(--purple-l);
  animation: blink 1s infinite; vertical-align: middle; margin-left: 2px;
}

.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }
.metric {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 10px; padding: 12px;
}
.metric-label { font-size: .7rem; color: var(--text-s); text-transform: uppercase; letter-spacing: .08em; }
.metric-value { font-size: 1.1rem; font-weight: 700; margin-top: 2px; }
.metric-value.g { color: #27c93f; }
.metric-value.p { color: var(--purple-l); }
.metric-value.c { color: var(--cyan-l); }
.metric-value.a { color: var(--accent); }

/* ============================================================
   SERVICES
   ============================================================ */
#services { background: var(--bg2); }

.services-header { text-align: center; margin-bottom: 60px; }
.services-header .section-sub { margin: 0 auto; }

.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.svc-card { position: relative; overflow: hidden; }

.svc-icon {
  width: 54px; height: 54px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.svc-icon svg { width: 26px; height: 26px; stroke-width: 1.5; }
.svc-icon.purple { background: rgba(124, 58, 237, .15); border: 1px solid rgba(124, 58, 237, .3); color: var(--purple-l); }
.svc-icon.cyan   { background: rgba(6, 182, 212, .15);  border: 1px solid rgba(6, 182, 212, .3);  color: var(--cyan-l); }
.svc-icon.amber  { background: rgba(245, 158, 11, .15); border: 1px solid rgba(245, 158, 11, .3); color: var(--accent); }
.svc-icon.green  { background: rgba(34, 197, 94, .15);  border: 1px solid rgba(34, 197, 94, .3);  color: var(--green); }

.svc-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.svc-card p  { color: var(--text-m); font-size: .92rem; margin-bottom: 18px; }

.svc-strip {
  position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
  opacity: 0; transition: opacity .3s;
}
.svc-card:hover .svc-strip { opacity: 1; }

/* ============================================================
   PRODUCTS (index preview)
   ============================================================ */
#products { background: var(--bg); }

.products-header { text-align: center; margin-bottom: 60px; }

.product-feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center;
}

.product-info h3  { font-size: 1.7rem; font-weight: 800; margin-bottom: 16px; }
.product-info p   { color: var(--text-m); font-size: 1rem; margin-bottom: 24px; line-height: 1.7; }
.product-actions  { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.product-tags     { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }

/* Phone mockup */
.phone-mockup { position: relative; display: flex; justify-content: center; }
.phone {
  width: 230px; background: var(--bg3); border: 2px solid var(--border);
  border-radius: 36px; padding: 12px;
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 0 1px rgba(124,58,237,.12), var(--glow);
}
.phone-screen {
  background: linear-gradient(160deg, #1a1a3e 0%, #0f0f2a 100%);
  border-radius: 26px; padding: 20px; min-height: 420px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
  position: relative; overflow: hidden;
}
.phone-screen::before {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,.4) 0%, transparent 70%);
}
.app-icon-big {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  border-radius: 18px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(124,58,237,.5); color: #fff;
}
.app-icon-big svg { width: 36px; height: 36px; stroke-width: 1.5; }
.app-name { font-weight: 800; font-size: 1.1rem; text-align: center; }
.app-sub  { color: var(--text-m); font-size: .75rem; text-align: center; }
.app-rating { display: flex; align-items: center; gap: 4px; font-size: .8rem; color: var(--accent); }
.app-rating span { color: var(--text-m); }
.app-downloads { font-size: .75rem; color: var(--text-s); }

.store-btn {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px; padding: 8px 14px; font-size: .72rem; font-weight: 600;
  color: var(--text); width: 100%;
}
.store-btn svg { flex-shrink: 0; }
.store-btn-label { line-height: 1.2; }
.store-btn-label small { display: block; font-size: .65rem; color: var(--text-m); font-weight: 400; }

.phone-notch {
  width: 80px; height: 22px; background: var(--bg3);
  border-radius: 0 0 14px 14px; margin: 0 auto 8px;
  border: 2px solid var(--border); border-top: none;
}
.phone-home { width: 50px; height: 4px; background: var(--border); border-radius: 2px; margin: 8px auto 0; }

/* ============================================================
   TEAM
   ============================================================ */
#team { background: var(--bg2); }

.team-header { text-align: center; margin-bottom: 60px; }

.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.team-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.team-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,.4), var(--glow);
  border-color: rgba(124,58,237,.4);
}

.team-card-top {
  padding: 32px 28px 24px; position: relative;
  background: linear-gradient(160deg, var(--bg3) 0%, var(--surface) 100%);
}
.team-card-top::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
}

.avatar {
  width: 72px; height: 72px; border-radius: 50%;
  border: 2px solid rgba(124,58,237,.4);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800; margin-bottom: 16px; position: relative;
  letter-spacing: .02em;
}
.avatar.r { background: linear-gradient(135deg, #7c3aed22, #06b6d422); color: var(--purple-l); }
.avatar.f { background: linear-gradient(135deg, #06b6d422, #27c93f22); color: var(--cyan-l); }
.avatar.m { background: linear-gradient(135deg, #f59e0b22, #ef444422); color: var(--accent); }
.avatar .status-dot {
  position: absolute; bottom: 3px; right: 3px;
  width: 12px; height: 12px; background: #22c55e;
  border-radius: 50%; border: 2px solid var(--surface);
}

.member-name { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.member-role { font-size: .82rem; color: var(--purple-l); font-weight: 600; margin-bottom: 12px; }

.team-card-body { padding: 20px 28px 28px; }
.member-bio { font-size: .88rem; color: var(--text-m); line-height: 1.7; margin-bottom: 18px; }
.member-tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* ============================================================
   CONTACT
   ============================================================ */
#contact { background: var(--bg); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }

.contact-info h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); font-weight: 800; margin-bottom: 16px; }
.contact-info p  { color: var(--text-m); font-size: 1rem; margin-bottom: 36px; }
.contact-items   { display: flex; flex-direction: column; gap: 20px; }

.contact-item { display: flex; align-items: center; gap: 16px; }

.contact-icon {
  width: 46px; height: 46px; flex-shrink: 0; border-radius: 12px;
  background: rgba(124,58,237,.1); border: 1px solid rgba(124,58,237,.25);
  display: flex; align-items: center; justify-content: center;
  color: var(--purple-l);
}
.contact-icon svg { width: 20px; height: 20px; stroke-width: 1.5; }

.contact-detail-label { font-size: .78rem; color: var(--text-s); text-transform: uppercase; letter-spacing: .08em; }
.contact-detail-value { font-size: .95rem; font-weight: 600; color: var(--text); }
.contact-detail-value a { color: var(--purple-l); transition: color .2s; }
.contact-detail-value a:hover { color: var(--cyan-l); }

.contact-form {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px;
}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .82rem; font-weight: 600; color: var(--text-m); margin-bottom: 8px; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; background: var(--bg3); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 16px; color: var(--text); font-size: .92rem;
  font-family: inherit; transition: border-color .2s, box-shadow .2s; outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--purple); box-shadow: 0 0 0 3px rgba(124,58,237,.15); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group select option { background: var(--bg3); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

#form-status { margin-top: 14px; font-size: .88rem; font-weight: 600; text-align: center; min-height: 22px; }

/* ============================================================
   PORTFOLIO PAGE
   ============================================================ */
#portfolio-hero {
  padding: 140px 0 80px; position: relative; overflow: hidden;
}
#portfolio-hero .hero-bg { position: absolute; inset: 0; z-index: 0; }

.portfolio-hero-content { position: relative; z-index: 1; text-align: center; max-width: 680px; margin: 0 auto; }
.portfolio-hero-content h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; line-height: 1.1; letter-spacing: -.03em; margin-bottom: 20px; }
.portfolio-hero-content p  { font-size: 1.1rem; color: var(--text-m); }

/* Filters */
.filters-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 56px; }

.filter-btn {
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-m); padding: 8px 20px; border-radius: 99px;
  font-size: .85rem; font-weight: 600; cursor: pointer; transition: all .2s;
  font-family: inherit;
}
.filter-btn.active,
.filter-btn:hover { background: var(--purple); border-color: var(--purple); color: #fff; box-shadow: 0 4px 14px rgba(124,58,237,.4); }

/* Featured project */
.featured-project {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; margin-bottom: 32px;
  transition: border-color .3s, box-shadow .3s;
}
.featured-project:hover { border-color: rgba(124,58,237,.5); box-shadow: var(--glow); }

.featured-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; min-height: 320px;
}
.featured-visual {
  background: linear-gradient(135deg, rgba(124,58,237,.2) 0%, rgba(6,182,212,.1) 100%);
  display: flex; align-items: center; justify-content: center; padding: 48px;
  border-right: 1px solid var(--border); position: relative; overflow: hidden;
}
.featured-visual::before {
  content: ''; position: absolute; top: -80px; left: -80px;
  width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,.3) 0%, transparent 70%);
}
.featured-app-logo {
  width: 100px; height: 100px;
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  border-radius: 24px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 20px 50px rgba(124,58,237,.5); position: relative; z-index: 1;
  color: #fff;
}
.featured-app-logo svg { width: 50px; height: 50px; stroke-width: 1.2; }

.featured-info { padding: 40px 44px; display: flex; flex-direction: column; justify-content: center; }
.featured-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em;
  color: var(--accent); background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.25);
  padding: 4px 12px; border-radius: 99px; margin-bottom: 16px;
}
.featured-info h2 { font-size: 1.6rem; font-weight: 800; margin-bottom: 12px; }
.featured-info p  { color: var(--text-m); font-size: .95rem; line-height: 1.7; margin-bottom: 24px; }
.featured-links   { display: flex; gap: 12px; flex-wrap: wrap; }

/* Projects grid */
.projects-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.project-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--glow); border-color: rgba(124,58,237,.5); }
.project-card.hidden { display: none; }

.project-card-top {
  padding: 24px 24px 20px; border-bottom: 1px solid var(--border);
  background: linear-gradient(160deg, var(--bg3) 0%, var(--surface) 100%);
}
.project-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.project-year { font-size: .75rem; color: var(--text-s); font-weight: 600; }

.status-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 99px; font-size: .68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em; flex-shrink: 0;
}
.status-badge svg { width: 8px; height: 8px; }
.status-badge.operational { background: rgba(34,197,94,.15);  color: var(--green); border: 1px solid rgba(34,197,94,.25); }
.status-badge.available   { background: rgba(6,182,212,.15);  color: var(--cyan-l); border: 1px solid rgba(6,182,212,.25); }
.status-badge.expanded    { background: rgba(124,58,237,.15); color: var(--purple-l); border: 1px solid rgba(124,58,237,.25); }
.status-badge.launched    { background: rgba(245,158,11,.15); color: var(--accent); border: 1px solid rgba(245,158,11,.25); }
.status-badge.functional  { background: rgba(34,197,94,.15);  color: var(--green); border: 1px solid rgba(34,197,94,.25); }

.project-metric {
  font-size: .78rem; font-weight: 700; color: var(--cyan-l);
  background: rgba(6,182,212,.08); border: 1px solid rgba(6,182,212,.15);
  padding: 4px 10px; border-radius: 6px; margin-bottom: 10px;
  display: inline-block;
}
.project-card-top h3 { font-size: 1rem; font-weight: 700; }

.project-card-body { padding: 20px 24px; flex: 1; display: flex; flex-direction: column; }
.project-desc { font-size: .88rem; color: var(--text-m); line-height: 1.7; margin-bottom: 14px; flex: 1; }

.project-bullets { margin-bottom: 16px; }
.project-bullets li {
  font-size: .82rem; color: var(--text-m); padding: 3px 0 3px 14px; position: relative; line-height: 1.5;
}
.project-bullets li::before {
  content: ''; position: absolute; left: 0; top: 10px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--purple-l);
}

.project-tech { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 16px; }
.tech-tag {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: .68rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; background: rgba(255,255,255,.05); color: var(--text-s);
  border: 1px solid rgba(255,255,255,.08);
}

.project-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--border); margin-top: auto; }
.project-author { font-size: .75rem; color: var(--text-s); }
.project-link { display: flex; align-items: center; gap: 6px; font-size: .82rem; font-weight: 600; color: var(--purple-l); transition: color .2s; }
.project-link:hover { color: var(--cyan-l); }
.project-link svg { width: 14px; height: 14px; }

/* CTA section (portfolio page) */
.portfolio-cta {
  text-align: center; padding: 80px 0;
  background: linear-gradient(180deg, var(--bg2) 0%, var(--bg) 100%);
}
.portfolio-cta h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 16px; }
.portfolio-cta p  { color: var(--text-m); margin-bottom: 36px; font-size: 1rem; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--bg2); border-top: 1px solid var(--border); padding: 48px 0 24px;
}

.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px;
}

.footer-brand p { color: var(--text-m); font-size: .88rem; margin-top: 10px; line-height: 1.7; max-width: 320px; }

.footer-col h4 {
  font-size: .85rem; font-weight: 700; margin-bottom: 16px;
  color: var(--text); text-transform: uppercase; letter-spacing: .08em;
}
.footer-col a { display: block; color: var(--text-m); font-size: .88rem; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: var(--purple-l); }

.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: .82rem; color: var(--text-s); flex-wrap: wrap; gap: 10px;
}
.footer-bottom a { color: var(--text-s); transition: color .2s; }
.footer-bottom a:hover { color: var(--purple-l); }
.footer-heart { display: inline-flex; align-items: center; gap: 4px; }
.footer-heart svg { width: 13px; height: 13px; color: var(--red); fill: var(--red); }

/* ============================================================
   BACK TO TOP
   ============================================================ */
#back-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  border: none; color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(10px); transition: all .3s;
  box-shadow: 0 4px 20px rgba(124,58,237,.4);
}
#back-top svg { width: 18px; height: 18px; stroke-width: 2.5; }
#back-top.show { opacity: 1; transform: translateY(0); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(.8)} }
@keyframes blink  { 0%,50%{opacity:1} 51%,100%{opacity:0} }

.fade-up { opacity: 0; transform: translateY(28px); transition: opacity .6s, transform .6s; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* --- Tablet landscape (≤ 1024px) --- */
@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: 1fr 1fr; }

  .featured-info  { padding: 32px 36px; }
  .product-feature { gap: 48px; }
}

/* --- Tablet portrait / large mobile (≤ 860px) --- */
@media (max-width: 860px) {
  /* Nav */
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-cta   { display: none; }          /* hide CTA button — use mobile menu */

  /* Hero */
  .hero-grid   { grid-template-columns: 1fr; gap: 0; padding: 56px 0 48px; }
  .hero-visual { display: none; }
  .hero-h1     { font-size: clamp(2rem, 7vw, 3rem); }
  .hero-p      { font-size: 1rem; }
  .hero-stats  { gap: 24px; margin-top: 40px; padding-top: 32px; }

  /* Services */
  .services-grid { grid-template-columns: 1fr 1fr; }

  /* Products */
  .product-feature { grid-template-columns: 1fr; gap: 36px; }
  .phone-mockup    { order: -1; }
  .product-info h3 { font-size: 1.4rem; }
  .product-actions { flex-direction: column; }
  .product-actions .btn { justify-content: center; }

  /* Team */
  .team-grid { grid-template-columns: 1fr 1fr; gap: 20px; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }
  .form-row     { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }

  /* Portfolio */
  .featured-inner  { grid-template-columns: 1fr; }
  .featured-visual {
    border-right: none;
    border-bottom: 1px solid var(--border);
    min-height: 180px;
    padding: 36px;
  }
  .featured-info { padding: 28px 28px 32px; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .filters-bar   { gap: 8px; }
}

/* --- Mobile (≤ 640px) --- */
@media (max-width: 640px) {
  /* Section spacing */
  .section { padding: 64px 0; }
  .container { padding: 0 18px; }

  /* Hero */
  .hero-grid     { padding: 48px 0 40px; }
  .hero-badge    { font-size: .72rem; }
  .hero-actions  { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .hero-stats    { gap: 16px; flex-wrap: wrap; }
  .stat-n        { font-size: 1.6rem; }
  .stat-l        { font-size: .75rem; }

  /* Services — 1 col */
  .services-grid { grid-template-columns: 1fr; }
  .card          { padding: 24px; }

  /* Products */
  .phone { width: 200px; }
  .phone-screen { min-height: 360px; }

  /* Team — 1 col */
  .team-grid         { grid-template-columns: 1fr; }
  .team-card-top     { padding: 24px 20px 18px; }
  .team-card-body    { padding: 16px 20px 24px; }

  /* Contact form */
  .contact-form  { padding: 24px 20px; }

  /* Portfolio */
  .portfolio-hero-content h1 { font-size: clamp(1.7rem, 8vw, 2.6rem); }
  .featured-links { flex-direction: column; }
  .featured-links .btn { justify-content: center; }
  .projects-grid  { grid-template-columns: 1fr; }
  .filter-btn     { padding: 7px 16px; font-size: .8rem; }
  .project-card-top  { padding: 20px 20px 16px; }
  .project-card-body { padding: 16px 20px; }

  /* Footer */
  .footer-inner  { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }

  /* Portfolio CTA */
  .portfolio-cta .btn { width: 100%; justify-content: center; }
}

/* --- Small mobile (≤ 420px) --- */
@media (max-width: 420px) {
  .nav-inner    { height: 60px; }
  .nav-logo     { font-size: 1.25rem; }
  .hero-stats   { gap: 12px; }
  .stat-n       { font-size: 1.4rem; }

  .phone        { width: 180px; }
  .phone-screen { min-height: 320px; padding: 14px; }
  .app-icon-big { width: 56px; height: 56px; }
  .app-icon-big svg { width: 28px; height: 28px; }

  .section-label  { font-size: .68rem; padding: 4px 12px; }
  .btn            { padding: 12px 22px; font-size: .88rem; }
}