/* ─────────────────────────────────────
   Horizon Outdoor - Premium Dark Mode 
   Style System
───────────────────────────────────── */
:root {
  /* Colors */
  --bg-color: hsl(160, 10%, 6%);
  --surface-color: hsl(160, 10%, 10%);
  --surface-color-light: hsl(160, 10%, 15%);
  
  --primary-color: hsl(150, 40%, 45%);     /* Pine Green */
  --primary-hover: hsl(150, 40%, 55%);
  --accent-color: hsl(30, 30%, 65%);       /* Sand / Earth */
  
  --text-main: hsl(0, 0%, 95%);
  --text-muted: hsl(0, 0%, 70%);
  
  /* Utilities */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --blur-radius: blur(16px);
  --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

/* ── Typography ── */
h1 {
  font-size: clamp(3rem, 5vw + 1rem, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

h2.section-title {
  font-size: clamp(2rem, 3vw + 1rem, 3.5rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.highlight {
  color: var(--primary-color);
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── UI Elements ── */
.btn-primary, .btn-secondary, .btn-primary-small {
  display: inline-block;
  text-decoration: none;
  font-weight: 500;
  border-radius: 100px;
  transition: var(--transition-fast);
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #000;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.5), 0 0 20px rgba(46, 178, 112, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background-color: var(--glass-bg);
  border-color: var(--text-muted);
}

.btn-primary-small {
  background-color: var(--primary-color);
  color: #000;
  padding: 0.5rem 1.2rem;
  font-size: 0.9rem;
}
.btn-primary-small:hover {
  background-color: var(--primary-hover);
}

.block-btn {
  display: block;
  width: 100%;
  margin-top: 1.5rem;
  padding: 1.2rem;
}

.pill-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  background-color: rgba(46, 178, 112, 0.1);
  color: var(--primary-color);
  border: 1px solid rgba(46, 178, 112, 0.2);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-radius);
  -webkit-backdrop-filter: var(--blur-radius);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
}

/* ── Layout Sections ── */

/* Header */
.nav-header {
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 5%;
  z-index: 100;
  background: rgba(13, 17, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-header .logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
}

.nav-header nav a {
  color: var(--text-main);
  text-decoration: none;
  margin-left: 2rem;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.nav-header nav a:hover:not(.btn-primary-small) {
  color: var(--primary-color);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 5% 4rem;
  text-align: center;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.subtitle {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 3rem;
}

.cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-blur-circle {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 60vw;
  height: 60vw;
  max-width: 600px;
  max-height: 600px;
  background: radial-gradient(circle, rgba(46, 178, 112, 0.15) 0%, rgba(0,0,0,0) 70%);
  z-index: 1;
  pointer-events: none;
}

/* Problem Section */
.problem-section {
  padding: 8rem 0;
  background-color: var(--surface-color);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.problem-card {
  background: var(--surface-color-light);
  padding: 3rem 2rem;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  transition: transform var(--transition-fast);
}

.problem-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.15);
}

.icon-placeholder {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.problem-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.problem-card p {
  color: var(--text-muted);
}

.agitation-text {
  text-align: center;
  font-size: 1.25rem;
  color: var(--accent-color);
  font-style: italic;
}

/* Mechanism Section */
.mechanism-section {
  padding: 10rem 0;
  position: relative;
}

.mechanism-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.description {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  margin-bottom: 1.5rem;
  position: relative;
  padding-left: 2rem;
}

.feature-list li::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--primary-color);
}

.mechanism-glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-radius);
  -webkit-backdrop-filter: var(--blur-radius);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 3.5rem;
  position: relative;
}

.mechanism-glass-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.mechanism-glass-card p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Offer Section */
.offer-section {
  padding: 10rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.offer-blur {
  top: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(200, 160, 120, 0.1) 0%, rgba(0,0,0,0) 70%); /* Sand glow */
}

.offer-text {
  max-width: 600px;
  margin: 0 auto 4rem;
  color: var(--text-muted);
  font-size: 1.15rem;
}

.pricing-card {
  max-width: 500px;
  margin: 0 auto;
  padding: 3rem;
  text-align: left;
}

.pricing-header {
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price {
  font-size: 1.1rem;
  color: var(--primary-color);
  font-weight: 600;
}

.benefits {
  list-style: none;
  margin-bottom: 2rem;
}

.benefits li {
  margin-bottom: 1rem;
  color: var(--text-main);
}

.guarantee {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  background: var(--surface-color);
  padding: 4rem 5% 2rem;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

footer .logo {
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links {
  margin: 2rem 0;
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-main);
}

.copyright {
  margin-top: 3rem;
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ── Responsive Design ── */
@media (max-width: 768px) {
  .mechanism-section .container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .nav-header nav a:not(.btn-primary-small) {
    display: none;
  }
  
  .mechanism-glass-card {
    padding: 2rem;
  }
}

/* ── Animation Classes ── */
.fade-in {
  opacity: 0;
  animation: fadeIn 1s var(--transition-slow) forwards;
}

.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeIn {
  to { opacity: 1; }
}