/* ============================================================
   APIXEL SOLUTIONS — styles.css
   Design: Light theme, blue accent
   ============================================================ */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #f8fafc;
  --bg-2:        #f1f5f9;
  --bg-card:     #ffffff;
  --bg-card-2:   #f8fafc;
  --border:      rgba(0,0,0,0.08);
  --border-2:    rgba(59,130,246,0.25);

  --blue:        #2563eb;
  --blue-light:  #3b82f6;
  --blue-dark:   #1d4ed8;
  --cyan:        #0891b2;
  --cyan-light:  #06b6d4;

  --text:        #0f172a;
  --text-muted:  #475569;
  --text-faint:  #94a3b8;

  --font-body:   'Inter', sans-serif;
  --font-head:   'Space Grotesk', sans-serif;

  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 4px 24px rgba(0,0,0,0.07);
  --shadow-blue: 0 4px 32px rgba(37,99,235,0.12);

  --nav-h:       72px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
svg { width: 24px; height: 24px; flex-shrink: 0; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 56px;
}

.text-center { text-align: center; }
.text-center.section-sub { margin-left: auto; margin-right: auto; }

.gradient-text {
  background: linear-gradient(135deg, var(--blue-light), var(--cyan-light));
  -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: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.35);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(59,130,246,0.5);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--blue);
  color: var(--blue-light);
  background: rgba(59,130,246,0.08);
}

.btn--full { width: 100%; justify-content: center; }

/* ---- NAVBAR ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}
.navbar.scrolled {
  background: rgba(248,250,252,0.92);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 16px rgba(0,0,0,0.06);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
}
.logo-svg-mark {
  display: block;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 8px rgba(59,130,246,0.4));
  transition: filter 0.2s;
}
.navbar__logo:hover .logo-svg-mark {
  filter: drop-shadow(0 4px 14px rgba(59,130,246,0.65));
}
.logo-text { color: var(--text); }
.logo-accent { color: var(--blue-light); }

.navbar__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.navbar__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}
.navbar__links a:hover { color: var(--text); }
.navbar__links .nav-cta {
  padding: 9px 20px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.2s;
}
.navbar__links .nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59,130,246,0.4);
}

.navbar__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.navbar__burger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 40%, transparent 80%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px;
  background: radial-gradient(ellipse, rgba(37,99,235,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  padding-top: 60px;
  padding-bottom: 80px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.2);
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero__title {
  font-family: var(--font-head);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  max-width: 700px;
}

.hero__sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero__ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__num {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.stat__label { font-size: 13px; color: var(--text-muted); }
.stat__divider {
  width: 1px; height: 40px;
  background: var(--border);
}

.hero__scroll-hint {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ---- ABOUT ---- */
.about { background: var(--bg-2); }
.about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.about__desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}
.about__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.badge {
  padding: 7px 16px;
  background: rgba(37,99,235,0.07);
  border: 1px solid rgba(37,99,235,0.18);
  color: var(--blue);
  font-size: 13px;
  font-weight: 500;
  border-radius: 100px;
}

.about__pillars {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.pillar {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s, transform 0.3s;
}
.pillar:hover {
  border-color: var(--border-2);
  transform: translateX(4px);
}
.pillar__num {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.pillar h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.pillar p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ---- SERVICES ---- */
.services { background: var(--bg); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  cursor: default;
}
.service-card:hover {
  border-color: var(--border-2);
  background: var(--bg-card-2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}
.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.15);
  border-radius: 12px;
  color: var(--blue);
  margin-bottom: 20px;
}
.service-card__icon svg { width: 22px; height: 22px; }
.service-card h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}
.service-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ---- AI SOLUTIONS ---- */
.ai {
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
}
.ai::before {
  content: '';
  position: absolute;
  right: -200px; top: 50%;
  transform: translateY(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(ellipse, rgba(8,145,178,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.ai__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
}
.ai__intro p {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}

.ai__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.ai-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s;
}
.ai-card:hover {
  border-color: rgba(6,182,212,0.3);
  background: rgba(6,182,212,0.04);
  transform: translateY(-2px);
}
.ai-card__icon {
  color: var(--cyan);
  margin-bottom: 14px;
}
.ai-card__icon svg { width: 22px; height: 22px; }
.ai-card h3 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}
.ai-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ---- PROCESS ---- */
.process { background: var(--bg); }
.process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  margin-top: 16px;
}
.process__steps::before {
  content: '';
  position: absolute;
  top: 28px; left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-2), var(--border-2), transparent);
}

.process-step {
  padding: 0 24px;
  position: relative;
}
.process-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: 50%;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-light);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
  transition: all 0.3s;
}
.process-step:hover .process-step__num {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 0 20px rgba(59,130,246,0.4);
}
.process-step__line { display: none; }
.process-step h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}
.process-step p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ---- CONTACT ---- */
.contact { background: var(--bg-2); }
.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.contact__info p {
  font-size: 17px;
  color: var(--text-muted);
  margin-top: 16px;
  margin-bottom: 40px;
  line-height: 1.8;
}
.contact__details { display: flex; flex-direction: column; gap: 16px; }
.contact__detail {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-muted);
}
.contact__detail svg { color: var(--blue-light); flex-shrink: 0; }
.contact__detail a:hover { color: var(--blue-light); }

/* Form */
.contact__form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.required { color: var(--blue-light); }
.optional { color: var(--text-faint); font-weight: 400; }

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-faint); }
.form-group select { cursor: pointer; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
.form-group textarea { resize: vertical; }

.form-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-faint);
  margin-top: 12px;
}

/* ---- FOOTER ---- */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  padding: 64px 24px 48px;
}
.footer__brand .navbar__logo { margin-bottom: 16px; }
.footer__brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 12px;
}

.footer__links { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.footer__col { display: flex; flex-direction: column; gap: 12px; }
.footer__col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 4px;
}
.footer__col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer__col a:hover { color: var(--blue-light); }

.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.footer__bottom p {
  font-size: 13px;
  color: var(--text-faint);
  text-align: center;
}
.footer__bottom a { color: var(--text-muted); }
.footer__bottom a:hover { color: var(--blue-light); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .process__steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process__steps::before { display: none; }
  .about__layout { grid-template-columns: 1fr; gap: 48px; }
  .ai__layout { grid-template-columns: 1fr; gap: 48px; }
  .contact__layout { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  .navbar__links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(248,250,252,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 20px 24px 32px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 99;
  }
  .navbar__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .navbar__links a {
    padding: 14px 0;
    font-size: 16px;
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
  .navbar__links a:last-child { border-bottom: none; }
  .navbar__links .nav-cta {
    padding: 14px 0;
    background: none;
    box-shadow: none;
    border-radius: 0;
    color: var(--blue-light);
  }
  .navbar__burger { display: flex; }
  .navbar__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .navbar__burger.open span:nth-child(2) { opacity: 0; }
  .navbar__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .section { padding: 72px 0; }
  .services__grid { grid-template-columns: 1fr; }
  .process__steps { grid-template-columns: 1fr; }
  .ai__cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact__form { padding: 28px 20px; }
  .footer__inner { grid-template-columns: 1fr; gap: 40px; }
  .footer__links { grid-template-columns: 1fr 1fr; }
  .hero__stats { gap: 20px; }
  .stat__divider { display: none; }
}

@media (max-width: 480px) {
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }
}

/* ---- Scroll animations ---- */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }