/* ===================================
   CSS Reset & Base Styles
   =================================== */

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

/* ===================================
   Typography & Color Variables
   =================================== */

:root {
  --color-text: #3a3a3a;
  --color-text-light: #666666;
  --color-background: #fdfcfb;
  --color-accent: #8b9e8a;
  --color-accent-hover: #6f7f6e;
  --color-border: #e8e4df;
  --color-white: #ffffff;
  
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: Georgia, "Times New Roman", serif;
  
  --max-width: 1200px;
  --spacing-small: 1rem;
  --spacing-medium: 1.5rem;
  --spacing-large: 2.5rem;
  --spacing-xlarge: 4rem;
}

/* ===================================
   Body & Main Layout
   =================================== */

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-background);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-large) var(--spacing-medium);
  min-height: 70vh;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-large);
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-large);
  margin-bottom: var(--spacing-medium);
}

h3 {
  font-size: 1.25rem;
  margin-top: var(--spacing-medium);
  margin-bottom: var(--spacing-small);
}

p {
  margin-bottom: var(--spacing-medium);
}

strong {
  font-weight: 600;
  color: var(--color-text);
}

/* ===================================
   Links
   =================================== */

a {
  color: var(--color-accent);
  text-decoration: underline;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===================================
   Header & Navigation
   =================================== */

header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-medium);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-small);
  justify-content: center;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

nav a:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}

nav a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===================================
   Sections
   =================================== */

section {
  margin-bottom: var(--spacing-large);
}

section:last-of-type {
  margin-bottom: 0;
}

/* ===================================
   Lists
   =================================== */

ul {
  list-style: none;
  margin-bottom: var(--spacing-medium);
}

ul li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

ul li:last-child {
  border-bottom: none;
}

/* ===================================
   Treatment Cards (Homepage)
   =================================== */

.treatment-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-medium);
}

.treatment-card {
  padding: var(--spacing-medium);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.treatment-card p:last-child {
  margin-bottom: 0;
}

.treatment-card a {
  color: var(--color-text);
  font-weight: 600;
  font-size: 1.1rem;
}

.treatment-card a:hover {
  color: var(--color-accent);
}

/* ===================================
   CTA Section & Buttons
   =================================== */

.cta-section {
  margin-top: var(--spacing-xlarge);
  padding: var(--spacing-large) var(--spacing-medium);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  text-align: center;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-small);
  margin-top: var(--spacing-medium);
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.cta-call {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.cta-call:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
}

.cta-whatsapp {
  background-color: var(--color-text);
  color: var(--color-white);
}

.cta-whatsapp:hover {
  background-color: var(--color-text-light);
  color: var(--color-white);
}

/* ===================================
   Price Notes
   =================================== */

.price-notes {
  margin-top: var(--spacing-large);
  padding: var(--spacing-medium);
  background-color: var(--color-white);
  border-left: 3px solid var(--color-accent);
}

.price-notes p {
  margin-bottom: 0.5rem;
}

.price-notes p:last-child {
  margin-bottom: 0;
}

/* ===================================
   Contact Details
   =================================== */

.contact-details {
  padding: var(--spacing-medium);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.contact-method {
  margin-bottom: var(--spacing-medium);
}

.contact-method:last-child {
  margin-bottom: 0;
}

.contact-link {
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
}

/* ===================================
   Footer
   =================================== */

footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xlarge);
  padding: var(--spacing-large) var(--spacing-medium);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 0.5rem;
}

footer p:last-child {
  margin-bottom: 0;
}

footer a {
  color: var(--color-text-light);
  text-decoration: none;
}

footer a:hover {
  color: var(--color-accent);
}

/* ===================================
   Responsive Design - Tablet
   =================================== */

@media (min-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  main {
    padding: var(--spacing-xlarge) var(--spacing-large);
  }
  
  .treatment-links {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .treatment-card {
    flex: 1 1 calc(50% - var(--spacing-medium));
  }
  
  .cta-buttons {
    flex-direction: row;
    justify-content: center;
    gap: var(--spacing-medium);
  }
  
  .cta-button {
    flex: 0 0 auto;
    min-width: 180px;
  }
}

/* ===================================
   Responsive Design - Desktop
   =================================== */

@media (min-width: 1024px) {
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  nav {
    justify-content: flex-start;
    padding: var(--spacing-medium) var(--spacing-large);
  }
  
  nav a {
    font-size: 1rem;
  }
  
  .treatment-card {
    flex: 1 1 calc(33.333% - var(--spacing-medium));
  }
}