/* ===== VARIÁVEIS BÁSICAS ===== */
:root {
  --bg: #f5f5f7;
  --bg-card: #ffffff;
  --primary: #2f855a;
  --primary-soft: #c6f6d5;
  --accent: #ed8936;
  --text: #1a202c;
  --text-muted: #4a5568;
  --border: #e2e8f0;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius-lg: 16px;
  --radius-pill: 999px;
}

/* ===== RESET SIMPLES ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* ===== CONTAINER ===== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.2rem;
}

/* ===== HEADER ===== */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

/* LOGO MAIS VISÍVEL */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.logo-text {
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.03em;
  font-size: 1.1rem;
}

/* MENU COMO BOTÕES COM BORDA */
.main-nav a {
  margin-left: 0.5rem;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.93rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.main-nav a:hover {
  color: var(--primary);
  border-color: var(--border);
  background: #f8fafc;
}

.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-soft);
  border-color: var(--primary-soft);
}

/* ===== HERO (TOPO DA HOME) ===== */
.hero {
  padding: 2.5rem 0 2rem;
}

.hero-grid {
  display: grid;
  gap: 1.8rem;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 3fr 2fr;
    align-items: center;
  }
}

.hero-text h1 {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.hero-text p {
  color: var(--text-muted);
  margin-bottom: 1.6rem;
}

/* BOTÕES GRANDES DAS FERRAMENTAS NO TOPO */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-actions .hero-big {
  min-width: 220px;
  font-size: 1rem;
  padding: 0.75rem 1.6rem;
}

@media (max-width: 767px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .hero-big {
    width: 100%;
    justify-content: center;
  }
}

/* ===== CARDS DO HERO ===== */
.hero-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.hero-card ul {
  padding-left: 1.1rem;
  margin-bottom: 1.25rem;
}

.hero-card li {
  margin-bottom: 0.35rem;
}

/* ===== BOTÕES GENÉRICOS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

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

.btn.primary:hover {
  background: #276749;
}

.btn.outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn.outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #f8fafc;
}

.btn.full-width {
  width: 100%;
}

.btn.small {
  padding: 0.45rem 1rem;
  font-size: 0.9rem;
}

/* ===== ÁREA DE ANÚNCIO ===== */
.ad-section {
  padding: 0.5rem 0 1rem;
}

.ad-slot {
  width: 100%;
  min-height: 60px;
  border-radius: 12px;
  border: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: #fdfdfd;
}

/* ===== SEÇÃO DE TEXTO EXPLICATIVO ===== */
.content-section {
  padding: 2rem 0 2.5rem;
}

.content-section h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.content-section p {
  color: var(--text-muted);
  max-width: 780px;
}

/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
  background: #ffffff;
  margin-top: 1rem;
}

.footer-content {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== PÁGINAS INTERNAS (IMC / TDEE / MACROS / PESO / ÁGUA) ===== */

.page-header {
  padding: 1.8rem 0 1.1rem;
}

.page-header h1 {
  margin: 0 0 0.4rem;
}

.page-header p {
  margin: 0;
  color: var(--text-muted);
}

/* LAYOUT DAS CALCULADORAS */
.calc-section {
  padding: 1.2rem 0 1.8rem;
}

.calc-grid {
  display: grid;
  gap: 1.3rem;
}

@media (min-width: 768px) {
  .calc-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.8fr);
  }
}

.calc-card,
.result-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow-soft);
}

.calc-card h2,
.result-card h2,
.result-table h3 {
  margin-top: 0;
}

/* FORMULÁRIOS NAS CALCULADORAS */
.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary-soft);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

/* RESULTADOS NAS CALCULADORAS */
.result-main p {
  margin: 0;
}

.result-main .imc-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.result-main .imc-status {
  font-weight: 600;
}

.result-main .imc-extra {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* TABELAS */
.result-table {
  margin-top: 1rem;
}

.result-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.result-table th,
.result-table td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.45rem;
  text-align: left;
}

.result-table th {
  background: #f7fafc;
}

/* ===== AJUSTES RESPONSIVOS GERAIS ===== */
@media (max-width: 767px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .main-nav a {
    margin-left: 0;
    margin-right: 0.6rem;
  }
}