:root {
  /* Primary & Secondary (earth tone) */
  --primary-color: #3b3a36; /* charcoal brown */
  --secondary-color: #8b5a3c; /* warm brown / leather */
  --accent-color: greenyellow;

  /* Light & Dark */
  --light-color: #f3efe9; /* warm ivory */
  --dark-color: #2f2e2b; /* dark brown */

  /* Text */
  --text-color: #3f3d3a; /* soft dark gray */
  --text-light: #7a7670; /* muted gray */

  /* Shadows (soft & vintage) */
  --shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.18);

  /* Gradients (subtle & warm) */
  --gradient-primary: linear-gradient(135deg, #3b3a36 0%, #5a584f 100%);
  --gradient-accent: linear-gradient(135deg, #b07a4a 0%, #c49563 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue",
    sans-serif;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background-color: #f9f9f9;
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Content Styles */
.page-header {
  display: flex;
  justify-content: center;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(3, 4, 5, 0.493) 0%, rgba(0, 0, 0, 0.212) 100%),
    url(../img/background1.png) no-repeat center center/cover;
  color: white;
  padding: 8rem 0;
  text-align: center;
  min-height: 500px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(
      circle at 20% 50%,
      rgba(78, 205, 196, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(255, 107, 107, 0.1) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.page-header h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -1px;
  animation: slideInDown 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 2;
}

.guide-content {
  padding: 4rem 0;
  background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
}

.guide-section {
  margin-bottom: 3rem;
  animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.guide-section h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--accent-color);
  font-weight: 800;
  letter-spacing: -0.5px;
}

.guide-section p {
  margin-bottom: 1rem;
}

.guide-section ul {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}

.guide-section li {
  margin-bottom: 0.5rem;
}

.btn {
  padding: 6px 8px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition:
    width 0.6s,
    height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
}

/* Keyframe Animations */
@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Extra Responsive for mobile */
@media (max-width: 600px) {
  .page-header {
    background:
      linear-gradient(
        135deg,
        rgba(3, 4, 5, 0.493) 0%,
        rgba(0, 0, 0, 0.212) 100%
      ),
      url("../img/background2.png") no-repeat center center/cover;
  }
  .preview-image img {
    max-height: 180px;
  }
  .container {
    width: 98%;
    padding: 0 5px;
  }
  .page-header h1 {
    font-size: 1.8rem;
  }
  .section-title h2 {
    font-size: 1.8rem;
  }
  .preview-content h2 {
    font-size: 1.5rem;
  }
}