/* ========================================
   GLOBAL RULES, RESETS, TYPOGRAPHY
   ======================================== */

/* Reset & Root Variables */
:root {
  --bg-color: #F8F5F0;
  --dark-bg-color: #1A1A1A;
  --card-bg: #FFFFFF;
  --dark-card-bg: #2A2A2A;
  --text-dark: #1A1A1A;
  --text-light: #FFFFFF;
  --text-muted: #555;
  --accent-color: #C6A96E;
  --accent-color-darker: #AB8F5C;
  --border-color: #E0D9CD;
  --border-dark-color: #3A3A3A;
  --error-color: #ef4444;

  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-color);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 4px;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent-color);
  color: var(--dark-bg-color);
  border-color: var(--accent-color);
}
.btn-primary:hover {
  background: var(--accent-color-darker);
  border-color: var(--accent-color-darker);
}

.btn-outline {
  background: transparent;
  color: var(--accent-color);
  border-color: var(--accent-color);
}
.btn-outline:hover {
  background: var(--accent-color);
  color: var(--dark-bg-color);
}

.btn-outline-light {
  background: transparent;
  color: var(--text-light);
  border-color: var(--text-light);
}
.btn-outline-light:hover {
  background: var(--text-light);
  color: var(--text-dark);
}

/* ========================================
   Section Header
   ======================================== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.section-header p {
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* Responsive typography and spacing */
@media (max-width: 992px) {
  .section-header h2 { font-size: 2.2rem; }
  .section-header p { font-size: 1.05rem; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 2rem; }
  .section-header p { font-size: 1rem; }
  .btn { padding: 12px 20px; }
}
@media (max-width: 480px) {
  .section-header h2 { font-size: 1.75rem; }
  .section-header p { font-size: 0.95rem; }
}

/* ========================================
   Scroll Animations & Form Errors
   ======================================== */
.fade-in-up,
.fade-in-left,
.fade-in-right {
  opacity: 0;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in-up { transform: translateY(40px); }
.fade-in-left { transform: translateX(-40px); }
.fade-in-right { transform: translateX(40px); }

.fade-in-up.animated,
.fade-in-left.animated,
.fade-in-right.animated {
  opacity: 1;
  transform: translate(0, 0);
}

/* Form Error States */
.form-group input.error,
.form-group textarea.error,
.form-group select.error {
  border-color: var(--error-color);
  animation: shake 0.5s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.error-message {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: 4px;
  display: none;
}

/* ========================================
   Accessibility & Utilities
   ======================================== */

/* Accessibility */
.skip-link {
  position: absolute;
  top: -60px;
  left: 0;
  background: var(--accent-color);
  color: var(--dark-bg-color);
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 0 0 4px 0;
  z-index: 10001;
  font-weight: 600;
  transition: top 0.3s ease;
}
.skip-link:focus {
  top: 0;
}

.visually-hidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

/* Keyboard Navigation Focus */
body.keyboard-nav *:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}
body:not(.keyboard-nav) *:focus {
  outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #eee;
}
::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color-darker);
}

/* Selection Color */
::selection {
  background: var(--accent-color);
  color: var(--dark-bg-color);
}
::-moz-selection {
  background: var(--accent-color);
  color: var(--dark-bg-color);
}

/* ========================================
  Utilities (Tambahan)
  ======================================== */
.section-divider {
  border: none;
  height: 1px;
  background-color: var(--border-color); /* Garis halus warna border */
  margin: 0 auto; /* Hapus margin atas/bawah default dari <hr> */
}