:root {
  --bg: #ffffff;
  --fg: #0f1226;
  --muted: #5b6075;
  --card: #ffffff;
  --border: #e7e8f0;
  --brand: #4f46e5;
  --brand-2: #a855f7;
  --gradient: linear-gradient(135deg, #4f46e5, #a855f7);
  --hero-glow: radial-gradient(1000px 500px at 10% -10%, rgba(79,70,229,.22), transparent 60%),
               radial-gradient(800px 450px at 90% 10%, rgba(168,85,247,.22), transparent 60%);
  --shadow-card: 0 10px 40px -20px rgba(40,30,80,.25);
  --shadow-glow: 0 20px 60px -20px rgba(79,70,229,.45);
  --glass-bg: rgba(255,255,255,.6);
  --glass-border: rgba(15,18,38,.08);
}

[data-theme="dark"] {
  --bg: #0b0d1f;
  --fg: #f3f4ff;
  --muted: #a8accb;
  --card: #14172e;
  --border: rgba(255,255,255,.1);
  --brand: #818cf8;
  --brand-2: #c084fc;
  --gradient: linear-gradient(135deg, #818cf8, #c084fc);
  --hero-glow: radial-gradient(1000px 500px at 10% -10%, rgba(99,102,241,.35), transparent 60%),
               radial-gradient(800px 450px at 90% 10%, rgba(168,85,247,.3), transparent 60%);
  --shadow-card: 0 10px 40px -20px rgba(0,0,0,.6);
  --shadow-glow: 0 30px 80px -20px rgba(129,140,248,.55);
  --glass-bg: rgba(20,23,46,.55);
  --glass-border: rgba(255,255,255,.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  transition: background .3s, color .3s;
}
h1,h2,h3,h4,h5 { font-family: 'Space Grotesk', sans-serif; letter-spacing: -.02em; font-weight: 700; }
a { color: inherit; text-decoration: none; }
.text-muted2 { color: var(--muted) !important; }
.eyebrow { color: var(--brand); font-size:.8rem; font-weight:700; letter-spacing:.12em; text-transform: uppercase; }

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.bg-gradient-brand { background: var(--gradient); color:#fff; }
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--glass-border);
}
.shadow-glow { box-shadow: var(--shadow-glow); }
.shadow-card { box-shadow: var(--shadow-card); }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }

/* NAV */
.navbar-cpros {
  position: sticky; top: 0; z-index: 1030;
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
}
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--gradient); color:#fff; display:grid; place-items:center; font-weight:700;
  box-shadow: var(--shadow-glow);
}
.nav-link-cpros { color: var(--muted); font-size:.95rem; font-weight:500; padding:.5rem .75rem; transition: color .2s; }
.nav-link-cpros:hover { color: var(--fg); }
.theme-btn {
  width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--border); background: transparent; color: var(--fg);
  display:grid; place-items:center; cursor:pointer; transition: background .2s;
}
.theme-btn:hover { background: var(--card); }

/* BUTTONS */
.btn-brand {
  background: var(--gradient); color:#fff; border:0;
  padding:.7rem 1.4rem; border-radius:.7rem; font-weight:600;
  box-shadow: var(--shadow-glow);
  transition: transform .2s, opacity .2s;
}
.btn-brand:hover { opacity:.92; transform: translateY(-1px); color:#fff; }
.btn-outline-cpros {
  background: transparent; border:1px solid var(--border); color: var(--fg);
  padding:.7rem 1.4rem; border-radius:.7rem; font-weight:600;
  transition: background .2s;
}
.btn-outline-cpros:hover { background: var(--card); color: var(--fg); }

/* HERO */
.hero {
  position: relative; overflow: hidden;
  background: var(--hero-glow);
  padding: 6rem 0;
}
.hero-title { font-size: clamp(3rem, 7vw, 5.5rem); line-height: 1.05; margin:0 0 1.5rem; }
.hero-sub { font-size: 1.15rem; color: var(--muted); max-width: 560px; margin-bottom: 2rem; line-height: 1.6; }
.hero-illust {
  width: 100%; max-width: 480px; margin: auto; display: block;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(99,102,241,.3));
}
.chip-glass {
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.4rem .9rem; border-radius: 999px; font-size:.78rem; font-weight:500;
  background: var(--glass-bg); border:1px solid var(--glass-border);
  margin-bottom: 1.25rem;
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-14px)} }

/* SECTIONS */
section { padding: 6rem 0; }
.section-alt { background: color-mix(in srgb, var(--fg) 4%, var(--bg)); }
.section-head { text-align:center; margin-bottom: 3.5rem; }
.section-head h2 { font-size: clamp(2rem, 4vw, 3rem); margin: .5rem 0 0; }

/* CARDS */
.card-cpros {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-radius: 1rem; padding: 1.75rem; height: 100%;
  box-shadow: var(--shadow-card);
  transition: transform .3s, box-shadow .3s;
}
.card-cpros:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.icon-square {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--gradient); color:#fff; display:grid; place-items:center;
  margin-bottom: 1.1rem; transition: transform .3s;
}
.card-cpros:hover .icon-square { transform: scale(1.1); }
.card-title { font-size: 1.2rem; font-weight: 600; margin: 0 0 .9rem; }
.card-list { list-style:none; padding:0; margin:0; }
.card-list li {
  display:flex; align-items:flex-start; gap:.5rem;
  color: var(--muted); font-size:.9rem; margin-bottom:.5rem;
}
.card-list li::before {
  content:"✓"; color: var(--brand); font-weight:700; flex-shrink:0;
}

/* TECH CHIPS */
.tech-chip {
  padding:.65rem 1.25rem; border-radius:999px;
  background: var(--glass-bg); border:1px solid var(--glass-border);
  font-size:.9rem; font-weight:500; cursor:default;
  transition: background .2s, color .2s, transform .2s;
}
.tech-chip:hover { background: var(--gradient); color:#fff; border-color: transparent; transform: translateY(-2px); }

/* WHY US */
.why-card { text-align:center; padding: 1.5rem; }
.why-card .icon-square { margin: 0 auto 1rem; }
.why-card p { margin:0; font-weight:600; }

/* PORTFOLIO */
.portfolio-card {
  position: relative; overflow: hidden;
  border-radius: 1rem; border: 1px solid var(--border);
  aspect-ratio: 4/3; box-shadow: var(--shadow-card);
  transition: box-shadow .3s;
}
.portfolio-card:hover { box-shadow: var(--shadow-glow); }
.portfolio-bg { position:absolute; inset:0; }
.portfolio-overlay {
  position:absolute; inset:0;
  background: linear-gradient(to top, var(--bg) 0%, rgba(0,0,0,0) 70%);
}
.portfolio-content { position:absolute; inset:0; padding: 1.5rem; display:flex; flex-direction:column; justify-content:flex-end; }
.portfolio-tag {
  display:inline-flex; width:fit-content;
  padding:.25rem .65rem; border-radius: 999px;
  background: var(--bg); font-size:.72rem; font-weight:600; margin-bottom:.5rem;
}
.portfolio-title { font-size: 1.15rem; font-weight: 600; margin:0; }

/* STATS */
.stat-number { font-size: clamp(2.5rem, 5vw, 3rem); font-weight: 700; }
.stat-label { color: var(--muted); font-size:.9rem; font-weight:500; margin-top:.25rem; }

/* TESTIMONIALS */
.t-card { padding: 1.75rem; }
.stars { color: var(--brand); margin-bottom: .8rem; letter-spacing:2px; }
.t-text { color: var(--muted); line-height:1.6; margin-bottom: 1.25rem; font-style: italic; }
.avatar {
  width:40px; height:40px; border-radius:50%;
  background: var(--gradient); color:#fff; display:grid; place-items:center; font-weight:600;
}

/* CONTACT */
.contact-item {
  display:flex; align-items:center; gap:.85rem;
  padding:.5rem 0;
}
.contact-icon {
  width:40px; height:40px; border-radius:10px;
  background: var(--gradient); color:#fff; display:grid; place-items:center; flex-shrink:0;
}
.form-control-cpros {
  background: transparent; border:1px solid var(--border);
  color: var(--fg); border-radius:.6rem; padding:.7rem .9rem;
  width:100%; font-family:inherit; font-size:.95rem;
  transition: border-color .2s, box-shadow .2s;
}
.form-control-cpros:focus {
  outline:none; border-color: var(--brand);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 20%, transparent);
}
.form-control-cpros::placeholder { color: var(--muted); }

/* FOOTER */
footer {
  border-top: 1px solid var(--border); padding: 2.5rem 0;
}

/* ICONS (simple SVG sizing) */
.icon { width:20px; height:20px; }
.icon-sm { width:16px; height:16px; }

/* RESPONSIVE TWEAKS */
@media (max-width: 768px) {
  section { padding: 4rem 0; }
  .hero { padding: 4rem 0; }
  .hero-illust { max-width: 320px; margin-top: 2rem; }
}