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

:root {
  --bg:        #050d1a;
  --bg-2:      #0a1628;
  --bg-card:   #0f1e35;
  --border:    rgba(255,255,255,0.07);
  --text:      #e2e8f0;
  --text-muted:#64748b;
  --blue:      #3b82f6;
  --blue-dark: #1d4ed8;
  --green:     #22c55e;
  --purple:    #a855f7;
  --orange:    #f97316;
  --cyan:      #06b6d4;
  --pink:      #ec4899;
  --grad:      linear-gradient(135deg, #3b82f6 0%, #a855f7 50%, #ec4899 100%);
  --grad-green:linear-gradient(135deg, #22c55e 0%, #06b6d4 100%);
  --radius:    16px;
  --shadow:    0 25px 50px rgba(0,0,0,0.5);
  --font:      'Inter', sans-serif;
  --font-head: 'Space Grotesk', sans-serif;
}

html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

/* ===========================
   UTILITIES
=========================== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-tag {
  display: inline-block;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-family: var(--font-head); font-size: clamp(28px,4vw,48px); font-weight: 900; margin-bottom: 16px; color: #fff; }
.section-header p { font-size: 18px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }

/* ===========================
   BUTTONS
=========================== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 28px; border-radius: 12px;
  font-weight: 700; font-size: 15px; transition: all .25s;
  cursor: pointer; border: none; white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 0 30px rgba(59,130,246,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 50px rgba(59,130,246,0.6); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn-lg  { padding: 16px 36px; font-size: 16px; border-radius: 14px; }
.btn-xl  { padding: 20px 52px; font-size: 18px; border-radius: 16px; }

/* ===========================
   HEADER
=========================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0;
  background: rgba(5,13,26,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all .3s;
}
.site-header.scrolled { padding: 10px 0; background: rgba(5,13,26,0.97); }

.header-inner {
  display: flex; align-items: center; gap: 32px;
}

.logo {
  font-family: var(--font-head);
  font-size: 22px; font-weight: 900; letter-spacing: -0.5px;
  flex-shrink: 0;
}
.logo-vent  { color: #fff; }
.logo-draw  { color: var(--blue); }
.logo-pro   { color: var(--green); }

.nav-main { display: flex; gap: 32px; margin-left: auto; }
.nav-main a { color: var(--text-muted); font-weight: 500; font-size: 15px; transition: color .2s; }
.nav-main a:hover { color: #fff; }

.header-cta { margin-left: 16px; }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto;
}
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s; }

/* ===========================
   HERO
=========================== */
.hero {
  min-height: 100vh; position: relative;
  display: flex; align-items: center;
  background: radial-gradient(ellipse 80% 60% at 50% -20%, rgba(59,130,246,0.2) 0%, transparent 70%),
              var(--bg);
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

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

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3);
  color: var(--green); font-size: 13px; font-weight: 600;
  padding: 8px 18px; border-radius: 100px; margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(36px,5vw,64px);
  font-weight: 900; line-height: 1.1;
  color: #fff; margin-bottom: 24px;
}

.hero-desc { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; max-width: 480px; line-height: 1.7; }

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats { display: flex; gap: 40px; }
.stat { display: flex; flex-direction: column; }
.stat strong { font-family: var(--font-head); font-size: 28px; font-weight: 900; color: #fff; line-height: 1; }
.stat span { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* Phone mockup */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }

.phone-mockup {
  width: 280px; height: 560px;
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border-radius: 40px;
  border: 2px solid rgba(255,255,255,0.1);
  box-shadow: 0 40px 80px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.1);
  padding: 12px;
  position: relative; z-index: 1;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-16px); }
}

.phone-screen {
  width: 100%; height: 100%;
  background: #050d1a;
  border-radius: 30px;
  overflow: hidden;
}

.app-preview { width: 100%; height: 100%; display: flex; flex-direction: column; }
.app-bar { display: flex; gap: 6px; padding: 10px 14px; background: #0f172a; }
.app-bar-dot { width: 10px; height: 10px; border-radius: 50%; }
.app-bar-dot.red    { background: #ef4444; }
.app-bar-dot.yellow { background: #eab308; }
.app-bar-dot.green  { background: #22c55e; }
.svg-preview { flex: 1; }

.hero-glow {
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
  border-radius: 50%;
  top: 50%; left: 50%; transform: translate(-50%,-50%);
  z-index: 0;
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:.6} 50%{opacity:1} }

.hero-wave {
  position: absolute; bottom: 0; left: 0; right: 0; height: 80px;
}
.hero-wave svg { width: 100%; height: 100%; }

/* ===========================
   FEATURES
=========================== */
.features { padding: 100px 0; background: #0a1628; }

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  opacity: 0; transition: opacity .3s;
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.15); }
.feature-card:hover::before { opacity: 1; }

.feature-card--blue::before   { background: linear-gradient(90deg, var(--blue), var(--cyan)); }
.feature-card--green::before  { background: linear-gradient(90deg, var(--green), var(--cyan)); }
.feature-card--purple::before { background: linear-gradient(90deg, var(--purple), var(--pink)); }
.feature-card--orange::before { background: linear-gradient(90deg, var(--orange), var(--pink)); }
.feature-card--cyan::before   { background: linear-gradient(90deg, var(--cyan), var(--blue)); }
.feature-card--pink::before   { background: linear-gradient(90deg, var(--pink), var(--purple)); }

.feature-icon { font-size: 36px; margin-bottom: 20px; }
.feature-card h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.feature-card p  { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ===========================
   FOR WHO
=========================== */
.for-who { padding: 100px 0; background: var(--bg); }

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

.who-card {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  transition: all .3s;
}
.who-card:hover { transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.who-icon { font-size: 48px; margin-bottom: 20px; }
.who-card h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.who-card p  { font-size: 15px; color: var(--text-muted); line-height: 1.7; }

/* ===========================
   DOWNLOAD
=========================== */
.download { padding: 120px 0; background: #0a1628; }

.download-inner {
  text-align: center;
  background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(168,85,247,0.1));
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 32px;
  padding: 80px 40px;
  position: relative;
  overflow: hidden;
}

.download-glow-1 {
  position: absolute; width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.3) 0%, transparent 70%);
  top: -100px; left: -100px;
}
.download-glow-2 {
  position: absolute; width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(168,85,247,0.3) 0%, transparent 70%);
  bottom: -100px; right: -100px;
}

.download-inner h2 { font-family: var(--font-head); font-size: clamp(28px,4vw,48px); font-weight: 900; color: #fff; margin-bottom: 16px; position: relative; }
.download-inner > p { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; position: relative; }
.download-actions { position: relative; }
.download-note { font-size: 13px; color: var(--text-muted); margin-top: 20px; position: relative; }

/* ===========================
   CONTACT
=========================== */
.contact { padding: 100px 0; background: var(--bg); }

.contact-box { display: flex; justify-content: center; }
.contact-email {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 22px; font-weight: 700; color: var(--blue);
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.3);
  padding: 20px 40px; border-radius: var(--radius);
  transition: all .3s;
}
.contact-email:hover { background: rgba(59,130,246,0.2); transform: translateY(-2px); }

/* ===========================
   FOOTER
=========================== */
.site-footer { background: #02070f; padding: 64px 0 0; }

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

.footer-brand .logo-vent  { color: #fff; font-family: var(--font-head); font-size: 22px; font-weight: 900; }
.footer-brand .logo-draw  { color: var(--blue); font-family: var(--font-head); font-size: 22px; font-weight: 900; }
.footer-brand .logo-pro   { color: var(--green); font-family: var(--font-head); font-size: 22px; font-weight: 900; }
.footer-brand p { font-size: 14px; color: var(--text-muted); margin-top: 12px; line-height: 1.6; }

.footer-links h4 { font-size: 13px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 14px; color: var(--text-muted); margin-bottom: 10px; transition: color .2s; }
.footer-links a:hover { color: #fff; }

.footer-bottom { padding: 24px 0; }
.footer-bottom p { font-size: 13px; color: var(--text-muted); text-align: center; }

/* ===========================
   AOS ANIMACJE (lekkie)
=========================== */
[data-aos] { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
[data-aos].aos-animate { opacity: 1; transform: translateY(0); }
[data-aos="fade-left"]  { transform: translateX(30px); }
[data-aos="fade-left"].aos-animate { transform: translateX(0); }
[data-aos="fade-right"] { transform: translateX(-30px); }
[data-aos="fade-right"].aos-animate { transform: translateX(0); }
[data-aos="zoom-in"]    { transform: scale(0.9); }
[data-aos="zoom-in"].aos-animate { transform: scale(1); }
[data-aos-delay="100"] { transition-delay: .1s; }
[data-aos-delay="200"] { transition-delay: .2s; }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2,1fr); }
  .footer-inner  { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-content { order: 1; }
  .hero-visual  { order: 0; }
  .hero-desc { margin: 0 auto 40px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .phone-mockup { width: 220px; height: 440px; }

  .nav-main, .header-cta { display: none; }
  .hamburger { display: flex; }

  .nav-main.open {
    display: flex; flex-direction: column; gap: 0;
    position: fixed; top: 70px; left: 0; right: 0;
    background: rgba(5,13,26,0.98);
    padding: 24px;
    border-bottom: 1px solid var(--border);
  }
  .nav-main.open a { padding: 14px 0; font-size: 18px; border-bottom: 1px solid var(--border); }

  .features-grid { grid-template-columns: 1fr; }
  .who-grid      { grid-template-columns: 1fr; }
  .footer-inner  { grid-template-columns: 1fr; gap: 32px; }
  .download-inner { padding: 48px 24px; }
}