/* ==========================================================================
   Marcelo Tchello — Design System (Strict Binary Editorial Monochrome)
   Based on DESIGN.md: Pure Obsidian (#000000) & Pure White (#ffffff)
   Zero shadows, zero rounded corners, zero gradients, ultra-wide tracking.
   ========================================================================== */

:root {
  --color-obsidian: #000000;
  --color-pure-white: #ffffff;
  
  --font-serif: 'Playfair Display', 'Didot', 'Bodoni MT', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --spacing-4: 4px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-32: 32px;
  --spacing-68: 68px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* Estrita aderência ao design.md: zero border-radius */
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-pure-white);
  color: var(--color-obsidian);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Tipografia e Tracking */
.font-editorial {
  font-family: var(--font-serif);
}

.tracking-luxury {
  letter-spacing: 0.15em;
}

.tracking-ultra {
  letter-spacing: 0.25em;
}

.uppercase {
  text-transform: uppercase;
}

/* Cores e Superfícies Binárias */
.bg-obsidian {
  background-color: var(--color-obsidian);
  color: var(--color-pure-white);
}

.bg-pure-white {
  background-color: var(--color-pure-white);
  color: var(--color-obsidian);
}

.text-obsidian {
  color: var(--color-obsidian);
}

.text-pure-white {
  color: var(--color-pure-white);
}

.border-obsidian {
  border: 1px solid var(--color-obsidian);
}

.border-pure-white {
  border: 1px solid var(--color-pure-white);
}

.border-b-obsidian {
  border-bottom: 1px solid var(--color-obsidian);
}

.border-b-pure-white {
  border-bottom: 1px solid var(--color-pure-white);
}

.border-t-obsidian {
  border-top: 1px solid var(--color-obsidian);
}

/* Botões Editoriais (Color Flip Puro: Branco <-> Preto) */
.btn-editorial-black {
  display: inline-block;
  background-color: var(--color-obsidian);
  color: var(--color-pure-white);
  border: 1px solid var(--color-obsidian);
  padding: 16px 32px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
  box-shadow: none !important;
}

.btn-editorial-black:hover {
  background-color: var(--color-pure-white);
  color: var(--color-obsidian);
}

.btn-editorial-white {
  display: inline-block;
  background-color: var(--color-pure-white);
  color: var(--color-obsidian);
  border: 1px solid var(--color-pure-white);
  padding: 16px 32px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
  box-shadow: none !important;
}

.btn-editorial-white:hover {
  background-color: var(--color-obsidian);
  color: var(--color-pure-white);
}

/* Campos de Formulário Minimalistas */
.form-input-editorial {
  width: 100%;
  background: transparent;
  border: 1px solid var(--color-obsidian);
  color: var(--color-obsidian);
  padding: 14px 16px;
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.form-input-editorial:focus {
  border-color: var(--color-obsidian);
  background-color: #fafafa;
}

.form-input-dark {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--color-pure-white);
  padding: 14px 16px;
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
}

.form-input-dark:focus {
  border-color: var(--color-pure-white);
  background-color: #0d0d0d;
}

.form-label-editorial {
  display: block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 6px;
  font-weight: 600;
}

/* WhatsApp Flutuante Minimalista */
.whatsapp-float-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  background-color: var(--color-obsidian);
  color: var(--color-pure-white);
  border: 1px solid var(--color-pure-white);
  padding: 12px 20px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: none !important;
}

.whatsapp-float-btn:hover {
  background-color: var(--color-pure-white);
  color: var(--color-obsidian);
  border-color: var(--color-obsidian);
}

/* Layout Editorial */
.hero-editorial {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--color-obsidian);
  color: var(--color-pure-white);
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.85) 100%);
  z-index: 1;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.65;
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* Imagens do Portfólio */
.portfolio-card {
  position: relative;
  background-color: #000;
  overflow: hidden;
}

.portfolio-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.portfolio-card:hover img {
  transform: scale(1.03);
}

.portfolio-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 100%);
  color: var(--color-pure-white);
}

/* Alertas Estilizados */
.alert-box {
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 12px;
  letter-spacing: 0.05em;
  border: 1px solid;
}

.alert-success {
  background-color: #000;
  color: #fff;
  border-color: #fff;
}

.alert-error {
  background-color: #000;
  color: #fff;
  border-color: #ffffff;
}