/* ============================================
   FLY MUSIC VIAGENS — Design System
   Operações complexas. Execução de precisão.
   Dark Cinematic Premium
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Core Palette — Dark Premium */
  --bg-primary: #0A0A0B;
  --bg-secondary: #0E0E10;
  --bg-card: #111113;
  --bg-elevated: #18181B;
  --bg-subtle: #0F0F11;
  --bg-surface: rgba(255, 255, 255, 0.03);

  /* Text */
  --text-primary: rgba(255, 255, 255, 0.92);
  --text-secondary: rgba(255, 255, 255, 0.48);
  --text-tertiary: rgba(255, 255, 255, 0.28);
  --text-inverse: #0A0A0B;

  /* Accent — Olive */
  --accent-olive: #4A5D42;
  --accent-olive-light: #5E7455;
  --accent-olive-dark: #3D4A3A;
  --accent-olive-muted: #8A9A7E;
  --accent-olive-glow: rgba(74, 93, 66, 0.35);

  /* Borders & Dividers */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(74, 93, 66, 0.4);

  /* Shadows & Glows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.04);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(74, 93, 66, 0.2);
  --glow-olive: 0 0 20px rgba(74, 93, 66, 0.15);
  --glow-olive-strong: 0 0 40px rgba(74, 93, 66, 0.25);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(40px);

  /* Typography */
  --font-heading: 'Sora', -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
  --font-body: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;

  --font-size-xs: 0.6875rem;   /* 11px */
  --font-size-sm: 0.8125rem;   /* 13px */
  --font-size-base: 0.9375rem; /* 15px */
  --font-size-md: 1.0625rem;   /* 17px */
  --font-size-lg: 1.1875rem;   /* 19px */
  --font-size-xl: 1.375rem;    /* 22px */
  --font-size-2xl: 1.75rem;    /* 28px */
  --font-size-3xl: 2.25rem;    /* 36px */
  --font-size-4xl: 3rem;       /* 48px */
  --font-size-5xl: 3.75rem;    /* 60px */
  --font-size-hero: clamp(3rem, 7vw, 5.5rem);
  --font-size-section: clamp(2rem, 4vw, 3rem);
  --font-size-stat: clamp(2.5rem, 5vw, 4rem);

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 800;

  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.75;

  --letter-spacing-tight: -0.04em;
  --letter-spacing-snug: -0.02em;
  --letter-spacing-normal: -0.01em;
  --letter-spacing-wide: 0.08em;
  --letter-spacing-wider: 0.14em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-40: 10rem;
  --space-section: clamp(6rem, 12vw, 10rem);

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-wide: 1400px;
  --nav-height: 72px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-2xl: 32px;

  /* Transitions — Premium timing */
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 800ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-cinematic: 1200ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  letter-spacing: var(--letter-spacing-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  opacity: 0;
  animation: page-enter 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}

@keyframes page-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

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

ul, ol {
  list-style: none;
}

::selection {
  background-color: var(--accent-olive);
  color: white;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-hero); font-weight: var(--font-weight-bold); }
h2 { font-size: var(--font-size-section); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.text-label {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--accent-olive-muted);
}

.text-overline {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
  display: block;
}

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.container--wide {
  max-width: var(--max-width-wide);
}

.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section--tight {
  padding: var(--space-16) 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
  min-height: 48px;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background-color: var(--accent-olive);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--glow-olive);
}

.btn--primary:hover {
  background-color: var(--accent-olive-light);
  box-shadow: var(--glow-olive-strong);
  transform: translateY(-1px);
}

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

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

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

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
}

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

.btn--whatsapp {
  background-color: #25D366;
  color: white;
  border: none;
  box-shadow: 0 2px 12px rgba(37, 211, 102, 0.2);
}

.btn--whatsapp:hover {
  background-color: #20BD5A;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
  transform: translateY(-1px);
}

.btn--large {
  padding: var(--space-4) var(--space-10);
  font-size: var(--font-size-sm);
  min-height: 56px;
  border-radius: var(--border-radius-md);
}

.btn svg,
.btn .btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ---------- Cards ---------- */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-slow);
  position: relative;
}

.card:hover {
  border-color: rgba(74, 93, 66, 0.25);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-md);
  background: rgba(74, 93, 66, 0.12);
  color: var(--accent-olive-muted);
  margin-bottom: var(--space-6);
  transition: all var(--transition-base);
}

.card:hover .card__icon {
  background: rgba(74, 93, 66, 0.2);
  box-shadow: 0 0 20px rgba(74, 93, 66, 0.1);
}

.card__icon svg {
  width: 22px;
  height: 22px;
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-snug);
}

.card__description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ---------- Form Elements ---------- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  min-height: 48px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-olive);
  box-shadow: 0 0 0 3px rgba(74, 93, 66, 0.15), var(--glow-olive);
  background-color: rgba(255, 255, 255, 0.05);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='rgba(255,255,255,0.3)' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.form-select option {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* ---------- Scroll Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }
.reveal-delay-6 { transition-delay: 0.48s; }

/* ---------- Utility Classes ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-olive-muted), var(--accent-olive-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow-border {
  position: relative;
}

.glow-border::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(74, 93, 66, 0.3), transparent, rgba(74, 93, 66, 0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.glow-border:hover::after {
  opacity: 1;
}

/* ---------- Keyframes ---------- */
@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--accent-olive); }
  50% { opacity: 0.6; box-shadow: 0 0 12px var(--accent-olive); }
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes count-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  body {
    opacity: 1;
    animation: none;
  }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--accent-olive);
  outline-offset: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 var(--space-5);
  }

  h1 { font-size: clamp(2.25rem, 8vw, 3rem); }
  h2 { font-size: clamp(1.625rem, 5vw, 2.25rem); }

  .btn--large {
    padding: var(--space-3) var(--space-8);
    font-size: var(--font-size-xs);
    min-height: 48px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }
}