/* ============================================================
   BASE.CSS — v1.1 Fase 1
   Reset · Tipografia · Botões · Formulários · Utilitários
   ============================================================ */

/* Google Fonts — incluir no <head>:
   <link href="https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet"> */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

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

a { color: inherit; text-decoration: none; }

ul, ol { list-style: none; }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}

button { cursor: pointer; border: none; background: none; }

input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button { -webkit-appearance: none; }

/* ------------------------------------------------------------
   TIPOGRAFIA
   ------------------------------------------------------------ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); font-weight: var(--weight-semibold); font-family: var(--font-body); }
h6 { font-size: var(--text-sm);   font-weight: var(--weight-semibold); font-family: var(--font-body); }

@media (min-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
}

p { line-height: var(--leading-relaxed); }

/* ------------------------------------------------------------
   BOTÕES
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 13px var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    color var(--transition-fast);
  min-height: 48px;
  min-width: 44px;
  user-select: none;
  position: relative;
  vertical-align: middle;
  -webkit-tap-highlight-color: transparent;
}

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.48;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primário */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(18,56,47,0.35);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-btn); }

/* Secundário */
.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary-soft);
  transform: translateY(-1px);
}

/* Ghost */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-surface-soft);
  border-color: var(--color-border-strong);
}

/* WhatsApp */
.btn-whatsapp {
  background-color: #25D366;
  color: #ffffff;
  border-color: #25D366;
  box-shadow: 0 2px 8px rgba(37,211,102,0.30);
}

.btn-whatsapp:hover {
  background-color: #1EBE59;
  border-color: #1EBE59;
  box-shadow: 0 4px 16px rgba(37,211,102,0.38);
  transform: translateY(-1px);
}

/* Tamanhos */
.btn-sm {
  padding: 9px var(--space-4);
  font-size: var(--text-sm);
  min-height: 38px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 15px var(--space-6);
  font-size: var(--text-lg);
  min-height: 56px;
  border-radius: var(--radius-lg);
}

.btn-full { width: 100%; }

/* Estado loading */
.btn-loading {
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

@keyframes btn-spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------
   CARDS
   ------------------------------------------------------------ */
.card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

/* ------------------------------------------------------------
   INPUTS E FORMULÁRIOS
   ------------------------------------------------------------ */
.input {
  width: 100%;
  padding: 12px var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: var(--leading-normal);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  min-height: 48px;
  appearance: none;
  -webkit-appearance: none;
}

.input::placeholder { color: var(--color-text-faint); }

.input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
  background: var(--color-surface);
}

.input.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-bg);
}

select.input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B6B6B' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

/* Labels e grupos */
.input-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.input-helper {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 5px;
  line-height: 1.5;
}

.input-error-msg {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-danger);
  margin-top: 5px;
  font-weight: var(--weight-medium);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-4);
}

/* ------------------------------------------------------------
   DIVISORES
   ------------------------------------------------------------ */
.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: var(--space-5) 0;
}

/* ------------------------------------------------------------
   ACESSIBILIDADE
   ------------------------------------------------------------ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  z-index: var(--z-toast);
  transition: top var(--transition-fast);
}

.skip-link:focus { top: 0; }

/* ------------------------------------------------------------
   REDUCED MOTION
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
