:root {
  --color-coral: #FF6F61;
  --color-teal: #008080;
  --color-bg: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #555555;
  --color-card-bg: #F9F9F9;
  --color-border: #E0E0E0;
  --font-heading: ui-rounded, 'Hiragino Maru Gothic ProN', Quicksand, Comfortaa, Manjari, 'Arial Rounded MT', 'Arial Rounded MT Bold', Calibri, Candara, Segoe, "Segoe UI", Optima, Arial, sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --border-radius: 16px;
  --spacing: 1.5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1A1A1A;
    --color-text: #F0F0F0;
    --color-text-light: #CCCCCC;
    --color-card-bg: #2A2A2A;
    --color-border: #444444;
    --color-coral: #FF857A;
    --color-teal: #40B0B0;
  }
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-teal);
  margin-bottom: 1rem;
  line-height: 1.2;
}

h1 {
  font-size: 3rem;
  color: var(--color-coral);
}

h2 {
  font-size: 2.2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-coral);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

a:hover, a:focus {
  color: var(--color-teal);
  text-decoration: underline;
}

a:focus, button:focus, input:focus {
  outline: 3px solid var(--color-coral);
  outline-offset: 2px;
}

header {
  background-color: var(--color-card-bg);
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-coral);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  color: var(--color-coral);
}

.logo svg {
  width: 32px;
  height: 32px;
}

main {
  flex: 1;
}

section {
  padding: 4rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.hero {
  text-align: center;
  padding: 6rem 5% 4rem;
  background-color: var(--color-card-bg);
  border-radius: 0 0 3rem 3rem;
  margin-bottom: 2rem;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  color: var(--color-text-light);
}

.btn {
  display: inline-block;
  background-color: var(--color-coral);
  color: #fff;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-family: var(--font-heading);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, background-color 0.2s;
  text-align: center;
}

.btn:hover {
  background-color: var(--color-teal);
  color: #fff;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.card {
  background-color: var(--color-card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  text-align: center;
}

.card svg {
  width: 64px;
  height: 64px;
  margin-bottom: 1rem;
}

.calculator {
  background-color: var(--color-teal);
  color: #fff;
  padding: 3rem 2rem;
  border-radius: var(--border-radius);
  margin-top: 2rem;
}

.calculator h2 {
  color: #fff;
  text-align: center;
}

.calculator-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-group input {
  padding: 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  font-size: 1rem;
  font-family: var(--font-body);
}

.calculator-results {
  margin-top: 3rem;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: var(--border-radius);
  text-align: center;
}

.result-item {
  margin-bottom: 1.5rem;
}

.result-item:last-child {
  margin-bottom: 0;
}

.result-value {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-coral);
  display: block;
}

@media (prefers-color-scheme: dark) {
  .calculator-results {
    background-color: rgba(0, 0, 0, 0.2);
  }
  .result-value {
    color: var(--color-coral);
  }
}


footer {
  background-color: var(--color-card-bg);
  padding: 2rem 5%;
  text-align: center;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

footer nav {
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

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

.illustration {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 2rem auto;
  display: block;
}

.newsletter {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter form {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.newsletter input[type="email"] {
  flex: 1;
  padding: 0.8rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  background-color: var(--color-bg);
  color: var(--color-text);
}

@media (max-width: 600px) {
  .newsletter form {
    flex-direction: column;
  }
}

.text-page {
  max-width: 800px;
  padding-top: 2rem;
}

.text-page h1 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.text-page h2 {
  font-size: 1.8rem;
  margin-top: 2rem;
}