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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-hover);
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

main {
  min-height: calc(100vh - var(--header-height));
  padding-top: var(--header-height);
}

section {
  padding: var(--spacing-3xl) 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 9999px;  /* Pill shape */
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-size: var(--font-size-base);
}

.btn-primary {
  background: linear-gradient(45deg, var(--color-primary), #60a5fa);
  background-size: 200% auto;
  color: var(--color-text-primary);
}

.btn-primary:hover {
  background-position: right center;
  transform: translateY(-2px);
  color: var(--color-text-primary);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-primary);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-text-primary);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }
.text-primary-color { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Hero Section */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

/* Hero Background Image */
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
  z-index: -1;
}

/* Hero Logo Watermark */
.hero-logo-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(500px, 80vw);
  max-height: 80%;
  opacity: 0.5;
  z-index: 0;
  pointer-events: none;
  filter: invert(1) drop-shadow(0 0 10px rgba(0, 0, 0, 0.5));
}

@media (max-width: 768px) {
  .hero-logo-watermark {
    width: min(350px, 90vw);
    opacity: 0.35;
  }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: var(--font-size-xl);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

/* Cards */
.card {
  background-color: var(--color-bg-dark-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-xl);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15);
  transform: translateY(-5px);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 768px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Splash Screen */
.splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: var(--color-bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease-out;
}

.splash.hidden {
  opacity: 0;
  pointer-events: none;
}

.splash-content {
  text-align: center;
}

.splash-logo {
  width: min(400px, 80vw);
  opacity: 0;
  filter: invert(1);
  animation: splashFadeIn 1.5s ease-out 0.3s forwards;
}

@keyframes splashFadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.splash-btn {
  display: block;
  margin: var(--spacing-xl) auto 0;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
  border: 2px solid var(--color-text-primary);
  border-radius: 9999px;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  opacity: 0;
  animation: splashFadeIn 0.6s ease-out 1.8s forwards;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.splash-btn:hover {
  background-color: var(--color-text-primary);
  color: var(--color-bg-dark);
  transform: translateY(-2px);
}


/* Scroll Animations */
.animate-ready {
  opacity: 0;
  transform: translateY(20px);
}

.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Stagger children in grids */
.grid .animate-in:nth-child(1) { transition-delay: 0ms; }
.grid .animate-in:nth-child(2) { transition-delay: 100ms; }
.grid .animate-in:nth-child(3) { transition-delay: 200ms; }
.grid .animate-in:nth-child(4) { transition-delay: 300ms; }
.grid .animate-in:nth-child(5) { transition-delay: 400ms; }
.grid .animate-in:nth-child(6) { transition-delay: 500ms; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  padding: 10px;
  line-height: 1;
}

.lightbox-close:hover {
  color: var(--color-primary);
}