/* CSS Variables for Theme */
:root {
  /* Light Mode Colors */
  --bg-primary: #f8f9fa;
  --bg-secondary: #fff;
  --bg-tertiary: #f5f5f5;
  --text-primary: #333;
  --text-secondary: #666;
  --text-tertiary: #1a202c;
  --text-inverse: #fff;
  --border-color: #e0e0e0;
  --shadow: rgba(0, 0, 0, 0.08);
  --shadow-hover: rgba(0, 0, 0, 0.12);
  --primary: #6b0dad;
  --primary-hover: #5a0a9a;
  --primary-light: rgba(107, 13, 173, 0.1);
  --primary-shadow: rgba(107, 13, 173, 0.3);
  --secondary: #4ade80;
  --secondary-hover: #3bd670;
  --accent-color: var(--primary);
  --accent-hover: var(--primary-hover);
  --accent-light: var(--primary-light);
  --accent-shadow: var(--primary-shadow);
  --success-color: var(--secondary);
  --success-surface: rgba(74, 222, 128, 0.12);
  --success-border: rgba(74, 222, 128, 0.35);
  --error-color: #ef4444;
  --error-surface: rgba(239, 68, 68, 0.12);
  --error-border: rgba(239, 68, 68, 0.35);
  --hero-gradient-start: #f5f0ff;
  --hero-gradient-end: #ede9fe;
  --card-gradient-start: #f8f9fa;
  --card-gradient-end: #f0f0f0;
  --footer-bg: #1a1a2e;
  --footer-text: #cbd5e1;
  --header-height: 104px;
}

html {
  scroll-padding-top: var(--header-height);
  overflow-x: hidden;
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --bg-primary: #0f0f1e;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #252547;
  --text-primary: #e2e8f0;
  --text-secondary: #cbd5e1;
  --text-tertiary: #fff;
  --text-inverse: #1a1a2e;
  --border-color: #3a3a5c;
  --shadow: rgba(0, 0, 0, 0.4);
  --shadow-hover: rgba(0, 0, 0, 0.6);
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --primary-light: rgba(139, 92, 246, 0.2);
  --primary-shadow: rgba(139, 92, 246, 0.4);
  --secondary: #4ade80;
  --secondary-hover: #3bd670;
  --accent-color: var(--primary);
  --accent-hover: var(--primary-hover);
  --accent-light: var(--primary-light);
  --accent-shadow: var(--primary-shadow);
  --success-color: var(--secondary);
  --success-surface: rgba(74, 222, 128, 0.15);
  --success-border: rgba(74, 222, 128, 0.4);
  --error-color: #f87171;
  --error-surface: rgba(248, 113, 113, 0.18);
  --error-border: rgba(248, 113, 113, 0.42);
  --hero-gradient-start: #1a1a2e;
  --hero-gradient-end: #0f0f1e;
  --card-gradient-start: #252547;
  --card-gradient-end: #1a1a2e;
  --footer-bg: #0a0a14;
  --footer-text: #94a3b8;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  padding-top: var(--header-height);
  overflow-x: hidden;
}

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

/* Buttons */
.btn {
  padding: 12px 32px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

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

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px var(--accent-shadow);
}

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

.btn-outline:hover {
  background-color: var(--bg-tertiary);
}

.whatsapp-float {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #fff;
  border: 2px solid rgba(37, 211, 102, 0.5);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  color: #25d366;
  font-size: 32px;
  text-decoration: none;
  z-index: 999;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.whatsapp-float:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 16px 28px rgba(0, 0, 0, 0.45);
}

.whatsapp-float img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  pointer-events: none;
}