/* ==========================================================================
   Design System — Radar da Gasosa Dedicated Site
   Subfolder: /radar-da-gasosa/
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0e131f;
  --bg-card: rgba(15, 23, 42, 0.7);
  --bg-card-hover: rgba(22, 34, 61, 0.88);
  --bg-glass: rgba(9, 13, 22, 0.88);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(255, 255, 255, 0.16);
  --border-focus: rgba(16, 185, 129, 0.55);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-fuel: #10b981;
  --accent-amber: #f59e0b;
  --accent-cyan: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --accent-glow: rgba(16, 185, 129, 0.18);

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1140px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(248, 250, 252, 0.92);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-highlight: rgba(0, 0, 0, 0.16);
  --border-focus: rgba(5, 150, 105, 0.6);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-fuel: #059669;
  --accent-amber: #d97706;
  --accent-cyan: #0284c7;
  --accent-gradient: linear-gradient(135deg, #059669 0%, #0284c7 100%);
  --accent-glow: rgba(5, 150, 105, 0.12);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

/* Background Atmosphere */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image: 
    radial-gradient(circle at 15% 15%, var(--accent-glow) 0%, transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 60px 60px, 60px 60px;
  opacity: 0.45;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 90px 0;
}

.section-header {
  margin-bottom: 50px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-fuel);
  margin-bottom: 12px;
}

.section-eyebrow::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-fuel);
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.6;
}

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

.app-site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
}

.app-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.back-to-portfolio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent-fuel);
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

.back-to-portfolio:hover {
  border-color: var(--accent-fuel);
  transform: translateX(-2px);
}

.app-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid var(--border-highlight);
}

.app-brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.app-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.app-nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.app-nav-link:hover,
.app-nav-link.active {
  color: var(--text-primary);
}

.app-nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 9px;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

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

.lang-btn.active {
  background-color: var(--accent-fuel);
  color: #ffffff;
}

.theme-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.theme-btn:hover {
  color: var(--accent-fuel);
  border-color: var(--accent-fuel);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.app-hero {
  padding-top: 160px;
  padding-bottom: 80px;
}

.hero-main-card {
  background: var(--bg-card);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 48px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  margin-bottom: 32px;
}

.hero-main-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
}

.hero-content {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-text-side {
  flex: 1;
  min-width: 320px;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-fuel);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  margin-bottom: 20px;
}

.app-hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.app-hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 32px;
}

.hero-actions-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.38);
}

.btn-outline {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent-fuel);
  transform: translateY(-2px);
  color: var(--accent-fuel);
}

.hero-banner-side {
  width: 340px;
  flex-shrink: 0;
}

.hero-banner-img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-highlight);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
  display: block;
}

/* Stats Row */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.stat-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--accent-fuel);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Features Deep Dive Section
   ========================================================================== */

.features-detailed-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.feat-deep-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  backdrop-filter: blur(12px);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.feat-deep-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
}

.feat-deep-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-fuel);
  margin-bottom: 20px;
}

.feat-deep-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feat-deep-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Permissions Breakdown Section (LGPD & Security)
   ========================================================================== */

.perms-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.perm-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
}

.perm-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.perm-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.perm-tech-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  color: var(--accent-cyan);
  border: 1px solid var(--border-subtle);
  margin-bottom: 12px;
  width: fit-content;
}

.perm-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.perm-status-box {
  margin-top: auto;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent-fuel);
  font-size: 0.82rem;
  color: var(--text-primary);
  line-height: 1.5;
}

/* ==========================================================================
   FAQ Section (Accordion)
   ========================================================================== */

.faq-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.open {
  border-color: var(--border-highlight);
}

.faq-question-btn {
  width: 100%;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.faq-icon-chevron {
  width: 20px;
  height: 20px;
  color: var(--accent-fuel);
  transition: transform var(--transition-smooth);
  flex-shrink: 0;
}

.faq-item.open .faq-icon-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 0 24px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 22px;
}

/* ==========================================================================
   Terms & Privacy Sections (Clean Legal Readability)
   ========================================================================== */

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  backdrop-filter: blur(12px);
  margin-bottom: 40px;
}

.legal-clause {
  margin-bottom: 28px;
}

.legal-clause-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.legal-clause-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.dpo-contact-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 24px;
}

.dpo-contact-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-fuel);
  margin-bottom: 6px;
}

.dpo-contact-email {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
}

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

.app-site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* Responsive */
@media (max-width: 960px) {
  .features-detailed-grid,
  .perms-grid {
    grid-template-columns: 1fr;
  }

  .hero-content {
    flex-direction: column;
  }

  .hero-banner-side {
    width: 100%;
    max-width: 440px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-nav-links {
    display: none;
  }
  
  .legal-card,
  .hero-main-card {
    padding: 28px 20px;
  }
}