@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --bg-main: #0A0A0C;
  --bg-sec: #121318;
  --text-main: #F4F5F8;
  --text-muted: #8E93A4;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent: #FFFFFF;
  --accent-soft: rgba(255, 255, 255, 0.06);
  --shadow-sm: 0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg: 0 25px 50px rgba(0,0,0,0.8);
  --nav-bg: rgba(10, 10, 12, 0.85);
  --radius: 20px;
  --radius-sm: 12px;
  --transition: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg-main: #FAFAFC;
  --bg-sec: #F0F2F5;
  --text-main: #0D0E11;
  --text-muted: #626673;
  --card-bg: rgba(255, 255, 255, 0.8);
  --card-border: rgba(0, 0, 0, 0.08);
  --accent: #111111;
  --accent-soft: rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 4px 20px rgba(0,0,0,0.05);
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.1);
  --nav-bg: rgba(250, 250, 252, 0.85);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

/* Fluid Typography for perfect scaling on all devices */
h1 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; letter-spacing: -0.02em; font-size: clamp(2.5rem, 6vw, 4.2rem); line-height: 1.1; margin-bottom: 0.8rem; }
h2 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; letter-spacing: -0.02em; font-size: clamp(2rem, 4.5vw, 3.5rem); margin-bottom: 1rem; }
h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; letter-spacing: -0.01em; font-size: clamp(1.2rem, 2vw, 1.5rem); margin-bottom: 0.6rem; margin-top: 1rem;}
h4 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.2rem; }

.bg-grid {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(var(--card-border) 1px, transparent 1px), linear-gradient(90deg, var(--card-border) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.3;
}

/* Navigation & Logo */
nav {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  background: var(--nav-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
}
.nav-container {
  max-width: 1280px; margin: 0 auto; padding: 1rem 2rem;
  display: flex; justify-content: space-between; align-items: center;
}
.logo {
  font-family: 'Space Grotesk', sans-serif; font-size: 1.25rem; font-weight: 700;
  text-decoration: none; color: var(--text-main); display: flex; align-items: center; gap: 0.85rem;
  z-index: 1001;
}

.logo-icon {
  height: 36px; width: auto; max-width: 160px; object-fit: contain; display: block;
  transition: filter var(--transition), opacity var(--transition);
}

[data-theme="dark"] .logo-for-light-theme { display: none !important; }
[data-theme="dark"] .logo-for-dark-theme { display: inline-block !important; }
[data-theme="light"] .logo-for-light-theme { display: inline-block !important; }
[data-theme="light"] .logo-for-dark-theme { display: none !important; }

/* Desktop Navigation */
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  text-decoration: none; color: var(--text-muted); font-size: 0.95rem; font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-main); }

#theme-toggle {
  background: var(--accent-soft); border: 1px solid var(--card-border); cursor: pointer;
  color: var(--text-main); font-size: 1rem; display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%; transition: all var(--transition);
}
#theme-toggle:hover { transform: scale(1.08); border-color: var(--text-main); }

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none; background: transparent; border: none; color: var(--text-main);
  font-size: 1.8rem; cursor: pointer; z-index: 1001; width: 44px; height: 44px;
  align-items: center; justify-content: center;
}

/* Layout & Containers */
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; width: 100%; }
.section { padding: clamp(4rem, 10vw, 7rem) 0; position: relative; }
.text-center { text-align: center; }
.gradient-text { background: linear-gradient(135deg, var(--text-main) 30%, var(--text-muted) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.section-tag {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 1rem; border-radius: 30px;
  background: var(--accent-soft); border: 1px solid var(--card-border);
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted); margin-bottom: 1.2rem;
}

/* APPLE-STYLE 3D SCROLL REVEAL HERO */
.scroll-hero-container { height: 300vh; position: relative; }
.scroll-hero-sticky {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  overflow: hidden; perspective: 1200px; padding: 0 1rem;
}

.hero-header-reveal { text-align: center; margin-bottom: 2rem; transition: opacity 0.3s ease, transform 0.3s ease; width: 100%; }
.hero-header-reveal p { font-size: clamp(1rem, 2vw, 1.25rem); color: var(--text-muted); max-width: 680px; margin: 0 auto; }

.reveal-stage {
  width: 90%; max-width: 1100px; background: var(--bg-sec); border: 1px solid var(--card-border);
  border-radius: 28px; padding: clamp(1.5rem, 4vw, 3rem); box-shadow: var(--shadow-lg);
  transform-style: preserve-3d; will-change: transform, opacity, filter;
  transform: rotateX(55deg) translateY(120px) scale(0.65); opacity: 0; filter: blur(12px);
  transition: border-color var(--transition);
}

.reveal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 2rem); }

.reveal-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.2rem); transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex; flex-direction: column; justify-content: space-between;
  min-height: 280px; position: relative; overflow: hidden; opacity: 0.4; transform: translateY(20px);
}

.reveal-card.active {
  opacity: 1; transform: translateY(0); border-color: var(--text-main);
  background: var(--accent-soft); box-shadow: 0 10px 35px rgba(0,0,0,0.3);
}

.reveal-num { font-family: 'Space Grotesk'; font-size: 3rem; font-weight: 700; opacity: 0.15; position: absolute; top: 1.2rem; right: 1.5rem; }
.reveal-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.6; }

.reveal-indicator { display: flex; gap: 0.5rem; justify-content: center; margin-top: 2.5rem; }
.dot { width: 32px; height: 4px; border-radius: 4px; background: var(--card-border); transition: all 0.3s ease; }
.dot.active { background: var(--text-main); width: 50px; }

/* Cards & Grid */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: clamp(1.5rem, 3vw, 2.5rem); }
.card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem); box-shadow: var(--shadow-sm); transition: all var(--transition);
  display: flex; flex-direction: column; height: 100%;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--text-main); }
.card p { flex-grow: 1; } /* Pushes buttons to bottom */

/* Buttons - Touch target minimum 44px for Mobile UI/UX */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem; 
  padding: 1rem 2.2rem; border-radius: 30px; font-weight: 600; text-decoration: none;
  transition: all var(--transition); cursor: pointer; border: none; font-family: 'Plus Jakarta Sans'; font-size: 1rem;
  min-height: 48px; /* Important for Mobile */
}
.btn-primary { background: var(--text-main); color: var(--bg-main); box-shadow: var(--shadow-sm); }
.btn-primary:hover { transform: translateY(-2px); opacity: 0.92; box-shadow: var(--shadow-lg); }
.btn-secondary { background: var(--accent-soft); color: var(--text-main); border: 1px solid var(--card-border); }
.btn-secondary:hover { background: var(--card-border); border-color: var(--text-main); }

/* Form Elements */
input, textarea { 
  width: 100%; padding: 1.2rem; margin-bottom: 1.2rem; border-radius: 12px; border: 1px solid var(--card-border); 
  background: var(--bg-sec); color: var(--text-main); font-family: 'Plus Jakarta Sans'; font-size: 1rem; 
  transition: border-color var(--transition); min-height: 50px; 
}
input:focus, textarea:focus { outline: none; border-color: var(--text-main); }

/* Animations */
.fade-up { opacity: 0; transform: translateY(25px); transition: opacity 0.7s ease-out, transform 0.7s ease-out; }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

/* Footer */
footer { background: var(--bg-sec); padding: 4rem 0 2rem; border-top: 1px solid var(--card-border); text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 1.5rem; margin: 1.8rem 0; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.95rem; transition: color var(--transition); font-weight: 500; padding: 0.5rem; }
.footer-links a:hover { color: var(--text-main); }
.footer-legal { display: flex; justify-content: center; gap: 1.5rem; margin-top: 1.8rem; border-top: 1px solid var(--card-border); padding-top: 1.8rem; flex-wrap: wrap; }
.footer-legal a { color: var(--text-muted); font-size: 0.9rem; text-decoration: none; font-weight: 500; transition: color var(--transition); padding: 0.5rem;}
.footer-legal a:hover { color: var(--text-main); }

/* RESPONSIVE MEDIA QUERIES */

@media (max-width: 992px) {
  .reveal-grid { grid-template-columns: 1fr; }
  .scroll-hero-container { height: auto; }
  .scroll-hero-sticky { position: relative; height: auto; padding: 7rem 0 2rem; }
  .reveal-stage { transform: none !important; opacity: 1 !important; filter: none !important; width: 100%; }
  .reveal-card { opacity: 1 !important; transform: none !important; min-height: auto; }
  .reveal-indicator { display: none; } /* Hide dots on mobile */
}

@media (max-width: 768px) {
  .nav-container { padding: 1rem; }
  .mobile-menu-btn { display: flex; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 100%; height: 100vh;
    background: var(--nav-bg); flex-direction: column; justify-content: center;
    backdrop-filter: blur(25px); -webkit-backdrop-filter: blur(25px);
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1); padding: 2rem;
  }
  .nav-links.active { right: 0; }
  .nav-links a { font-size: 1.5rem; margin: 0.5rem 0; }
  .nav-actions { display: flex; gap: 1rem; align-items: center; }
  
  .grid { grid-template-columns: 1fr; } /* Stack cards on mobile */
  .contact-grid { display: flex; flex-direction: column; gap: 2rem; }
}

@media (max-width: 480px) {
  .logo { font-size: 1.1rem; }
  .logo-icon { height: 28px; }
  .btn { width: 100%; } /* Full width buttons on small phones */
}

/* Fix for touch devices to avoid sticky hover states */
@media (hover: none) {
  .card:hover { transform: none; box-shadow: var(--shadow-sm); border-color: var(--card-border); }
}