/* VetLaudos – Site institucional – variáveis e estilos */

:root {
  --color-primary: #16a34a;
  --color-primary-hover: #15803d;
  --color-primary-focus: #4ade80;
  --color-bg-start: #f0fdf4;
  --color-bg-end: #dcfce7;
  --color-text: #111827;
  --color-text-muted: #4b5563;
  --color-text-light: #6b7280;
  --color-surface: #ffffff;
  --color-surface-alt: #f9fafb;
  --color-border: #e5e7eb;
  --max-width: 960px;
  --header-height: 64px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-surface) 24rem);
  min-height: 100vh;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.site-header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.logo:focus {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
}

.logo svg {
  width: 1.75rem;
  height: 1.75rem;
}

.nav-desktop {
  display: none;
}

.nav-desktop a {
  margin-left: var(--space-lg);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
}

.nav-desktop a:hover,
.nav-desktop a:focus {
  color: var(--color-primary);
}

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

/* Hamburger */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius);
}

.menu-toggle:hover,
.menu-toggle:focus {
  background: var(--color-surface-alt);
  color: var(--color-primary);
}

.menu-toggle:focus {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

.menu-toggle[aria-expanded="true"] .icon-open {
  display: none;
}

.menu-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

.menu-toggle .icon-close {
  display: none;
}

/* Mobile nav */
.nav-mobile {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transform: translateX(-100%);
  transition: transform 0.2s ease;
  z-index: 99;
  overflow-y: auto;
}

.nav-mobile.is-open {
  transform: translateX(0);
}

.nav-mobile a {
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius);
}

.nav-mobile a:hover,
.nav-mobile a:focus {
  background: var(--color-surface-alt);
  color: var(--color-primary);
}

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

/* Main */
main {
  padding-top: var(--header-height);
  padding-bottom: var(--space-2xl);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

/* Hero */
.hero {
  text-align: center;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.hero h1 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

.hero .lead {
  margin: 0 0 var(--space-xl);
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  color: white;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease;
}

.btn:hover {
  background: var(--color-primary-hover);
}

.btn:focus {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Como funciona */
.how-section {
  background: var(--color-surface);
}

.how-section h2 {
  margin: 0 0 var(--space-xl);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
}

.steps {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.step {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}

.step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--space-sm);
  font-weight: 700;
  font-size: 1rem;
  color: white;
  background: var(--color-primary);
  border-radius: 50%;
}

.step h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.step p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Benefícios */
.benefits-section h2 {
  margin: 0 0 var(--space-lg);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
}

.benefits-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.benefits-list li::before {
  content: "";
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--color-primary);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat;
}

.benefits-list strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.benefits-list span {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Contato */
.contact-section {
  background: var(--color-surface);
}

.contact-section h2 {
  margin: 0 0 var(--space-xs);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
}

.contact-section .intro {
  margin: 0 0 var(--space-lg);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.contact-wrap {
  max-width: 28rem;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.2);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.form-actions .btn {
  flex: 1;
  min-width: 140px;
}

.btn-secondary {
  background: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
}

.site-footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.site-footer a {
  color: var(--color-primary);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus {
  text-decoration: underline;
}

.site-footer a:focus {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
}

/* Breakpoint: desktop */
@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
    align-items: center;
  }

  .menu-toggle {
    display: none;
  }

  .nav-mobile {
    display: none;
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .benefits-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .benefits-list {
    grid-template-columns: repeat(2, 1fr);
  }
}