/* =========================
   CSS Variables & Reset
   ========================= */
:root {
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --color-secondary: #ffffff;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #ecfdfa;
  --color-accent: #14b8a6;

  --font-sans: 'Inter', sans-serif;
  --transition-speed: 0.3s;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, #ecfdfa 0%, #f9fffd 100%);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =========================
   Global Page Background
   ========================= */
.page-background {
  background: linear-gradient(135deg, #ecfdfa 0%, #f9fffd 100%);
  min-height: 100vh;
  color: #111827;
}

.page-background h1,
.page-background h2,
.page-background h3,
.page-background h4,
.page-background p,
.page-background li {
  color: #111827;
}

.page-background .text-muted {
  color: #6b7280;
}

/* =========================
   Typography & Basics
   ========================= */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

p {
  margin-bottom: 1rem;
  color: var(--color-text-light);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-speed);
}

a:hover {
  opacity: 0.8;
}

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

ul {
  list-style: disc;
  margin-left: 1.5rem;
}

/* =========================
   Layout Utilities
   ========================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 5rem 0;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mt-large { margin-top: 3rem; }
.mb-large { margin-bottom: 3rem; }

/* =========================
   Buttons
   ========================= */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  text-align: center;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  color: var(--color-secondary);
  border: none;
  box-shadow: 0 6px 14px rgba(20, 184, 166, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(20, 184, 166, 0.3);
}

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

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

/* Responsive button sizing */
@media (max-width: 768px) {
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }
}

/* =========================
   Hero Section
   ========================= */
.hero {
  padding: 6rem 0;
  background: linear-gradient(135deg, #ecfdfa 0%, #f9fffd 100%);
  text-align: center;
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.1) 0%, transparent 70%);
  animation: pulse 20s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.hero__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
  position: relative;
  z-index: 1;
}

.hero__title .highlight {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-text-light);
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.hero__buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  position: relative;
  z-index: 1;
}