@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Montserrat:wght@400;600;700;800;900&display=swap');

/* ── DARK THEME (default) ── */
:root, [data-theme="dark"] {
  --navy: #0a0f1e; --navy-2: #0d1428; --navy-3: #111827;
  --blue: #2563eb; --blue-light: #3b82f6; --blue-glow: #60a5fa; --cyan: #06b6d4;
  --white: #f8fafc; --grey-300: #94a3b8; --grey-500: #64748b;
  --gradient-hero: linear-gradient(135deg,#0a0f1e 0%,#0d1428 50%,#0f1f3d 100%);
  --gradient-blue: linear-gradient(135deg,#2563eb,#06b6d4);
  --gradient-card: linear-gradient(145deg,#111827,#1e2a3a);
  --shadow-blue: 0 0 40px rgba(37,99,235,0.15);
  --shadow-card: 0 20px 60px rgba(0,0,0,0.4);
  --radius: 16px; --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --nav-bg: rgba(10,15,30,0.85); --nav-bg-scrolled: rgba(10,15,30,0.98);
  --nav-border: rgba(255,255,255,0.05); --mobile-menu-bg: rgba(10,15,30,0.98);
  --input-bg: rgba(255,255,255,0.04); --input-border: rgba(255,255,255,0.10);
  --card-border: rgba(255,255,255,0.06); --card-border-hover: rgba(37,99,235,0.3);
  --hero-line: rgba(37,99,235,0.04); --code-line-border: rgba(255,255,255,0.04);
  --tag-bg: rgba(37,99,235,0.12); --tag-border: rgba(37,99,235,0.3);
  --pillar-bg: rgba(37,99,235,0.06); --pillar-border: rgba(37,99,235,0.12);
  --ci-bg: rgba(255,255,255,0.03); --ci-border: rgba(255,255,255,0.06);
  --stats-border: rgba(255,255,255,0.07);
  --footer-bg: #06090f; --footer-border: rgba(255,255,255,0.06);
  --footer-menu-border: rgba(255,255,255,0.05);
  --toggle-icon: "🌙";
}

/* ── LIGHT THEME ── */
[data-theme="light"] {
  --navy: #f0f4ff; --navy-2: #e8edf8; --navy-3: #ffffff;
  --blue: #1d4ed8; --blue-light: #2563eb; --blue-glow: #1d4ed8; --cyan: #0891b2;
  --white: #0f172a; --grey-300: #334155; --grey-500: #64748b;
  --gradient-hero: linear-gradient(135deg,#eef2ff 0%,#e0e7ff 50%,#dbeafe 100%);
  --gradient-blue: linear-gradient(135deg,#2563eb,#06b6d4);
  --gradient-card: linear-gradient(145deg,#ffffff,#f1f5ff);
  --shadow-blue: 0 0 40px rgba(37,99,235,0.10);
  --shadow-card: 0 20px 60px rgba(0,0,0,0.07);
  --radius: 16px; --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --nav-bg: rgba(240,244,255,0.85); --nav-bg-scrolled: rgba(240,244,255,0.98);
  --nav-border: rgba(0,0,0,0.07); --mobile-menu-bg: rgba(240,244,255,0.98);
  --input-bg: rgba(0,0,0,0.03); --input-border: rgba(0,0,0,0.12);
  --card-border: rgba(0,0,0,0.07); --card-border-hover: rgba(37,99,235,0.25);
  --hero-line: rgba(37,99,235,0.06); --code-line-border: rgba(0,0,0,0.05);
  --tag-bg: rgba(37,99,235,0.08); --tag-border: rgba(37,99,235,0.2);
  --pillar-bg: rgba(37,99,235,0.05); --pillar-border: rgba(37,99,235,0.15);
  --ci-bg: rgba(0,0,0,0.03); --ci-border: rgba(0,0,0,0.08);
  --stats-border: rgba(0,0,0,0.08);
  --footer-bg: #1e293b; --footer-border: rgba(255,255,255,0.08);
  --footer-menu-border: rgba(255,255,255,0.08);
}

*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family:'Inter',sans-serif; background:var(--navy); color:var(--white); line-height:1.6; overflow-x:hidden; transition:background 0.3s, color 0.3s; }

::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:var(--navy); }
::-webkit-scrollbar-thumb { background:var(--blue); border-radius:3px; }

/* ── UTILITIES ── */
.container { max-width:1200px; margin:0 auto; padding:0 2rem; }
.section { padding:100px 0; }
.section-tag {
  display:inline-flex; align-items:center; gap:8px;
  background:var(--tag-bg); border:1px solid var(--tag-border);
  color:var(--blue-light); padding:6px 16px; border-radius:50px;
  font-size:0.78rem; font-weight:600; letter-spacing:1.5px; text-transform:uppercase;
  margin-bottom:1.2rem;
}
.section-tag::before { content:''; width:6px; height:6px; background:var(--blue-light); border-radius:50%; }

.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 32px; border-radius:var(--radius-sm);
  font-family:'Inter',sans-serif; font-weight:600; font-size:0.95rem;
  cursor:pointer; transition:var(--transition); text-decoration:none; border:none;
}
.btn-primary { background:var(--gradient-blue); color:#fff; box-shadow:0 4px 24px rgba(37,99,235,0.35); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 32px rgba(37,99,235,0.5); }
.btn-outline { background:transparent; color:var(--white); border:1px solid var(--input-border); }
.btn-outline:hover { background:var(--input-bg); border-color:var(--blue-light); transform:translateY(-2px); }

/* ── NAV ── */
nav {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  padding:0 2rem;
  background:var(--nav-bg);
  backdrop-filter:blur(20px);
  border-bottom:1px solid var(--nav-border);
  transition:var(--transition);
}
.nav-inner {
  max-width:1200px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
  height:70px;
}
.logo {
  display:flex; align-items:center; gap:10px;
  font-family:'Montserrat',sans-serif; font-weight:800;
  font-size:1.25rem; color:var(--white); text-decoration:none;
}
.logo-img { height:36px; width:auto; border-radius:8px; display:block; }
.nav-links { display:flex; align-items:center; gap:2rem; list-style:none; }
.nav-links a {
  color:var(--grey-300); text-decoration:none;
  font-size:0.9rem; font-weight:500; transition:var(--transition); position:relative;
}
.nav-links a::after {
  content:''; position:absolute; bottom:-4px; left:0; right:0;
  height:2px; background:var(--gradient-blue);
  transform:scaleX(0); transition:var(--transition);
}
.nav-links a:hover { color:var(--white); }
.nav-links a:hover::after { transform:scaleX(1); }
.nav-right { display:flex; align-items:center; gap:0.75rem; }

/* ── THEME TOGGLE ── */
.theme-toggle {
  width:38px; height:38px; border-radius:50%;
  border:1px solid var(--input-border);
  background:var(--input-bg);
  color:var(--white); cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; transition:var(--transition); flex-shrink:0;
}
.theme-toggle:hover { background:var(--tag-bg); border-color:var(--blue-light); transform:rotate(20deg) scale(1.1); }

.hamburger { display:none; flex-direction:column; gap:5px; cursor:pointer; padding:4px; }
.hamburger span { width:24px; height:2px; background:var(--white); border-radius:2px; transition:var(--transition); }

/* ── HERO ── */
#hero {
  min-height:100vh; padding-top:70px;
  background:var(--gradient-hero);
  display:flex; align-items:center;
  position:relative; overflow:hidden;
}
.hero-grid-bg {
  position:absolute; inset:0;
  background-image:linear-gradient(var(--hero-line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--hero-line) 1px,transparent 1px);
  background-size:60px 60px;
}
.hero-glow {
  position:absolute; top:20%; right:10%;
  width:600px; height:600px;
  background:radial-gradient(circle,rgba(37,99,235,0.12) 0%,transparent 70%);
  pointer-events:none;
}
.hero-inner {
  max-width:1200px; margin:0 auto; padding:0 2rem;
  display:grid; grid-template-columns:1fr 1fr;
  gap:4rem; align-items:center;
  position:relative; z-index:1; width:100%;
}
.hero-eyebrow {
  display:inline-flex; align-items:center; gap:8px;
  color:var(--cyan); font-size:0.8rem; font-weight:600;
  letter-spacing:2px; text-transform:uppercase; margin-bottom:1.5rem;
}
.hero-eyebrow::before { content:''; width:30px; height:1px; background:var(--cyan); }
h1 { font-family:'Montserrat',sans-serif; font-size:clamp(2.2rem,4vw,3.4rem); font-weight:800; line-height:1.2; margin-bottom:1.5rem; }
.h1-accent { background:var(--gradient-blue); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero-sub { font-size:1.1rem; color:var(--grey-300); line-height:1.8; margin-bottom:2.5rem; max-width:480px; }
.hero-actions { display:flex; gap:1rem; flex-wrap:wrap; }
.hero-stats {
  display:flex; gap:2rem; margin-top:3rem; padding-top:2rem;
  border-top:1px solid var(--stats-border);
}
.stat-item { text-align:left; }
.stat-num { font-family:'Montserrat',sans-serif; font-size:2rem; font-weight:800; background:var(--gradient-blue); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.8rem; color:var(--grey-500); margin-top:2px; }

.hero-visual { position:relative; display:flex; justify-content:center; align-items:center; }
.hero-card {
  background:var(--gradient-card); border:1px solid var(--card-border);
  border-radius:var(--radius); padding:2rem;
  width:100%; max-width:420px;
  box-shadow:var(--shadow-card),var(--shadow-blue); position:relative;
}
.hero-card::before {
  content:''; position:absolute; inset:-1px;
  border-radius:var(--radius); z-index:-1;
  background:linear-gradient(135deg,rgba(37,99,235,0.3),transparent,rgba(6,182,212,0.2));
}
.code-line {
  display:flex; align-items:center; gap:10px;
  padding:8px 0; border-bottom:1px solid var(--code-line-border);
  font-family:'Courier New',monospace; font-size:0.82rem;
}
.code-line:last-child { border-bottom:none; }
.code-dot { width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.dot-blue { background:var(--blue-light); box-shadow:0 0 6px var(--blue-light); }
.dot-cyan { background:var(--cyan); box-shadow:0 0 6px var(--cyan); }
.dot-green { background:#22c55e; box-shadow:0 0 6px #22c55e; }
.code-text { color:var(--grey-300); }
.code-val { color:var(--blue-glow); }
.hero-card-tag { display:flex; align-items:center; gap:6px; margin-bottom:1.5rem; }
.tag-dot { width:8px; height:8px; border-radius:50%; background:#22c55e; box-shadow:0 0 8px #22c55e; animation:pulse 2s infinite; }
.tag-text { font-size:0.75rem; color:var(--grey-300); letter-spacing:1px; }
@keyframes pulse { 0%,100%{opacity:1}50%{opacity:0.5} }

/* ── SERVICES ── */
#services { background:var(--navy-3); }
.services-header { text-align:center; max-width:700px; margin:0 auto 4rem; }
.services-header h2 { font-family:'Montserrat',sans-serif; font-size:clamp(1.8rem,3vw,2.6rem); font-weight:800; margin-bottom:1rem; }
.services-header p { color:var(--grey-300); font-size:1.05rem; line-height:1.8; }
.services-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:2rem; }
.service-card {
  background:var(--gradient-card); border:1px solid var(--card-border);
  border-radius:var(--radius); padding:2.5rem 2rem;
  transition:var(--transition); position:relative; overflow:hidden; cursor:default;
}
.service-card::before { content:''; position:absolute; bottom:0; left:0; right:0; height:3px; background:var(--gradient-blue); transform:scaleX(0); transition:var(--transition); }
.service-card:hover { transform:translateY(-8px); box-shadow:var(--shadow-card),var(--shadow-blue); border-color:var(--card-border-hover); }
.service-card:hover::before { transform:scaleX(1); }
.service-icon { width:56px; height:56px; border-radius:14px; background:var(--tag-bg); border:1px solid var(--tag-border); display:flex; align-items:center; justify-content:center; margin-bottom:1.5rem; font-size:1.5rem; transition:var(--transition); }
.service-card:hover .service-icon { background:var(--pillar-bg); transform:scale(1.1); }
.service-card h3 { font-family:'Montserrat',sans-serif; font-size:1.2rem; font-weight:700; margin-bottom:1rem; }
.service-card p { color:var(--grey-300); font-size:0.92rem; line-height:1.8; margin-bottom:1.5rem; }
.service-features { list-style:none; display:flex; flex-direction:column; gap:8px; }
.service-features li { display:flex; align-items:center; gap:8px; font-size:0.85rem; color:var(--grey-300); }
.service-features li::before { content:'→'; color:var(--blue-light); font-weight:700; }

/* ── ABOUT ── */
#about { background:var(--navy-2); }
.about-inner { display:grid; grid-template-columns:1fr 1fr; gap:5rem; align-items:center; }
.about-visual { position:relative; }
.about-img-wrap { border-radius:var(--radius); overflow:hidden; border:1px solid var(--card-border); box-shadow:var(--shadow-card); position:relative; }
.about-img-wrap img { width:100%; display:block; }
.about-badge { position:absolute; bottom:-20px; right:-20px; background:var(--gradient-blue); border-radius:var(--radius); padding:1.2rem 1.5rem; box-shadow:0 10px 40px rgba(37,99,235,0.4); text-align:center; }
.badge-num { font-family:'Montserrat',sans-serif; font-size:2rem; font-weight:800; color:#fff; }
.badge-label { font-size:0.75rem; color:rgba(255,255,255,0.8); }
.about-content h2 { font-family:'Montserrat',sans-serif; font-size:clamp(1.8rem,3vw,2.4rem); font-weight:800; margin-bottom:1.2rem; line-height:1.3; }
.about-content p { color:var(--grey-300); font-size:0.98rem; line-height:1.9; margin-bottom:1rem; }
.about-pillars { display:flex; flex-direction:column; gap:1rem; margin:2rem 0; }
.pillar { display:flex; align-items:flex-start; gap:1rem; background:var(--pillar-bg); border:1px solid var(--pillar-border); border-radius:var(--radius-sm); padding:1rem 1.2rem; transition:var(--transition); }
.pillar:hover { background:var(--tag-bg); border-color:var(--tag-border); }
.pillar-icon { font-size:1.3rem; margin-top:2px; flex-shrink:0; }
.pillar h4 { font-weight:600; font-size:0.95rem; margin-bottom:3px; }
.pillar p { color:var(--grey-500); font-size:0.82rem; line-height:1.6; margin:0; }

/* ── WHY US ── */
#why-us { background:var(--navy-3); }
.why-header { text-align:center; }
.why-header h2 { font-family:'Montserrat',sans-serif; font-size:clamp(1.8rem,3vw,2.4rem); font-weight:800; margin-bottom:1rem; }
.why-header p { color:var(--grey-300); max-width:600px; margin:0 auto; }
.why-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:1.5rem; margin-top:3rem; }
.why-card { background:var(--gradient-card); border:1px solid var(--card-border); border-radius:var(--radius); padding:2rem 1.5rem; transition:var(--transition); text-align:center; }
.why-card:hover { transform:translateY(-6px); border-color:var(--card-border-hover); box-shadow:var(--shadow-blue); }
.why-icon { font-size:2rem; margin-bottom:1rem; }
.why-card h3 { font-weight:700; font-size:1rem; margin-bottom:0.6rem; }
.why-card p { color:var(--grey-500); font-size:0.85rem; line-height:1.7; }

/* ── CONTACT ── */
#contact { background:var(--navy-2); }
.contact-inner { display:grid; grid-template-columns:1fr 1.4fr; gap:4rem; align-items:flex-start; }
.contact-info h2 { font-family:'Montserrat',sans-serif; font-size:clamp(1.8rem,3vw,2.4rem); font-weight:800; margin-bottom:1rem; }
.contact-info p { color:var(--grey-300); line-height:1.8; margin-bottom:2rem; }
.contact-details { display:flex; flex-direction:column; gap:1rem; }
.contact-item { display:flex; gap:1rem; align-items:flex-start; padding:1rem 1.2rem; background:var(--ci-bg); border:1px solid var(--ci-border); border-radius:var(--radius-sm); }
.contact-item-icon { font-size:1.2rem; flex-shrink:0; margin-top:2px; }
.contact-item h4 { font-size:0.85rem; color:var(--grey-300); margin-bottom:2px; }
.contact-item p { font-size:0.9rem; color:var(--white); margin:0; line-height:1.5; }
.form-card { background:var(--gradient-card); border:1px solid var(--card-border); border-radius:var(--radius); padding:2.5rem; box-shadow:var(--shadow-card); }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.form-group { margin-bottom:1.2rem; }
.form-group label { display:block; font-size:0.82rem; color:var(--grey-300); font-weight:500; margin-bottom:6px; }
.form-group input,.form-group select,.form-group textarea {
  width:100%; background:var(--input-bg); border:1px solid var(--input-border);
  border-radius:var(--radius-sm); padding:12px 14px;
  color:var(--white); font-family:'Inter',sans-serif; font-size:0.9rem;
  transition:var(--transition); outline:none;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus { border-color:var(--blue); box-shadow:0 0 0 3px rgba(37,99,235,0.1); background:var(--pillar-bg); }
.form-group select option { background:var(--navy); }
.form-group textarea { resize:vertical; min-height:120px; }
.form-submit { width:100%; padding:14px; font-size:1rem; justify-content:center; margin-top:0.5rem; }

/* ── FORM VALIDATION ── */
.field-error { display:block; font-size:0.75rem; color:#f87171; margin-top:4px; }
.form-group input.invalid,.form-group select.invalid,.form-group textarea.invalid {
  border-color:#f87171; box-shadow:0 0 0 3px rgba(248,113,113,0.1);
}

/* ── FOOTER ── */
footer { background:var(--footer-bg); border-top:1px solid var(--footer-border); padding:60px 0 0; }
.footer-inner { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:3rem; max-width:1200px; margin:0 auto; padding:0 2rem; }
.footer-brand p { color:var(--grey-500); font-size:0.88rem; line-height:1.8; margin:1rem 0; max-width:280px; }
.footer-legal { margin-top:1.2rem; background:var(--ci-bg); border:1px solid var(--footer-border); border-radius:var(--radius-sm); padding:0.9rem 1rem; }
.footer-legal p { font-size:0.75rem; color:var(--grey-500); margin:3px 0; }
.footer-legal span { color:var(--grey-300); }
.footer-col h4 { font-weight:700; font-size:0.95rem; margin-bottom:1.2rem; color:#f8fafc; }
.footer-col ul { list-style:none; display:flex; flex-direction:column; gap:0.7rem; }
.footer-col ul li a { color:var(--grey-500); text-decoration:none; font-size:0.87rem; transition:var(--transition); }
.footer-col ul li a:hover { color:var(--blue-light); }
.footer-bottom { max-width:1200px; margin:0 auto; padding:1.5rem 2rem; display:flex; justify-content:space-between; align-items:center; border-top:1px solid var(--footer-border); margin-top:3rem; }
.footer-bottom p { color:var(--grey-500); font-size:0.82rem; }

/* ── TOAST ── */
.toast { position:fixed; bottom:2rem; right:2rem; z-index:9999; background:#22c55e; color:#fff; padding:1rem 1.5rem; border-radius:var(--radius-sm); font-weight:600; box-shadow:0 10px 40px rgba(34,197,94,0.4); transform:translateY(100px); opacity:0; transition:all 0.4s cubic-bezier(0.4,0,0.2,1); }
.toast.show { transform:translateY(0); opacity:1; }

/* ── FADE-UP ── */
.fade-up { opacity:0; transform:translateY(30px); transition:opacity 0.7s ease,transform 0.7s ease; }
.fade-up.visible { opacity:1; transform:translateY(0); }

/* ── MOBILE MENU ── */
.mobile-menu { display:none; flex-direction:column; background:var(--mobile-menu-bg); padding:1.5rem 2rem; border-top:1px solid var(--nav-border); }
.mobile-menu.open { display:flex; }
.mobile-menu a { color:var(--grey-300); text-decoration:none; padding:0.8rem 0; border-bottom:1px solid var(--footer-menu-border); font-size:1rem; }
.mobile-menu a:last-child { border:none; }

/* ── RESPONSIVE ── */
@media (max-width:1024px) {
  .services-grid { grid-template-columns:1fr 1fr; }
  .why-grid { grid-template-columns:1fr 1fr; }
  .footer-inner { grid-template-columns:1fr 1fr; }
}
@media (max-width:768px) {
  .nav-links,.nav-cta { display:none; }
  .hamburger { display:flex; }
  .hero-inner { grid-template-columns:1fr; text-align:center; }
  .hero-eyebrow { justify-content:center; }
  .hero-sub { margin:0 auto 2.5rem; }
  .hero-actions { justify-content:center; }
  .hero-stats { justify-content:center; }
  .hero-visual { display:none; }
  .services-grid { grid-template-columns:1fr; }
  .about-inner { grid-template-columns:1fr; }
  .about-badge { bottom:10px; right:10px; }
  .why-grid { grid-template-columns:1fr 1fr; }
  .contact-inner { grid-template-columns:1fr; }
  .form-row { grid-template-columns:1fr; }
  .footer-inner { grid-template-columns:1fr; }
  .footer-bottom { flex-direction:column; gap:0.5rem; text-align:center; }
}
@media (max-width:480px) {
  .why-grid { grid-template-columns:1fr; }
  h1 { font-size:2rem; }
}