/*
 * Design system base — copiar e ajustar cores/fontes por projeto.
 * Dark theme default. Light via [data-theme="light"].
 *
 *= require_tree .
 *= require_self
 */

:root {
  /* Cores primárias — trocar por projeto */
  --color-primary: #0066FF;
  --color-primary-hover: #0052CC;
  --color-accent: #00D4FF;
  --color-purple: #7B61FF;

  /* Cores semânticas */
  --color-success: #10B981;
  --color-danger: #FF4757;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* Background (dark default) */
  --color-bg: #06060f;
  --color-bg-card: #0d0d1a;
  --color-bg-elevated: #141424;
  --color-bg-hover: rgba(255, 255, 255, 0.04);

  /* Borders */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);

  /* Texto */
  --color-text: #ffffff;
  --color-text-muted: rgba(255, 255, 255, 0.7);
  --color-text-faded: rgba(255, 255, 255, 0.4);

  /* Spacing — base 4px */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px 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-glow: 0 0 40px rgba(0, 102, 255, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;

  /* Tipografia */
  --font-body: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Monaco, monospace;

  /* Z-index */
  --z-sticky: 50;
  --z-dropdown: 100;
  --z-modal: 200;
  --z-toast: 300;

  /* Container */
  --container-max: 1200px;
  --container-narrow: 720px;
}

[data-theme="light"] {
  --color-bg: #ffffff;
  --color-bg-card: #f8fafc;
  --color-bg-elevated: #ffffff;
  --color-bg-hover: rgba(0, 0, 0, 0.04);
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.16);
  --color-text: #0a0a0a;
  --color-text-muted: rgba(0, 0, 0, 0.7);
  --color-text-faded: rgba(0, 0, 0, 0.4);
}

/* Reset mínimo */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.container--narrow { max-width: var(--container-narrow); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.3);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0, 102, 255, 0.4);
}
.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn--ghost:hover { background: var(--color-bg-hover); }
.btn--danger { background: var(--color-danger); color: white; }
.btn--sm { padding: var(--space-xs) var(--space-md); font-size: 0.85rem; }
.btn--lg { padding: var(--space-md) var(--space-xl); font-size: 1.05rem; }

/* Card */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition-fast);
}
.card--interactive:hover { border-color: var(--color-border-strong); }
.card__header { margin-bottom: var(--space-md); }
.card__title { margin: 0; font-size: 1.2rem; }
.card__subtitle { margin: var(--space-xs) 0 0 0; color: var(--color-text-muted); font-size: 0.9rem; }

/* Forms */
.field { display: flex; flex-direction: column; gap: var(--space-sm); margin-bottom: var(--space-md); }
.field label { font-size: 0.9rem; color: var(--color-text-muted); }
.field input, .field textarea, .field select {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Flash */
.flash {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  max-width: 400px;
  animation: slideIn 250ms ease;
}
.flash--notice { border-left-color: var(--color-success); }
.flash--alert { border-left-color: var(--color-danger); }

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Utilitários */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-muted { color: var(--color-text-muted); }
.text-faded { color: var(--color-text-faded); }
.text-center { text-align: center; }

.stack { display: flex; flex-direction: column; }
.stack--sm { gap: var(--space-sm); }
.stack--md { gap: var(--space-md); }
.stack--lg { gap: var(--space-lg); }

.row { display: flex; align-items: center; }
.row--between { justify-content: space-between; }
.row--gap-md { gap: var(--space-md); }

.hidden { display: none !important; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  color: var(--color-text-muted);
}
.empty-state__icon { font-size: 3rem; margin-bottom: var(--space-md); }
.empty-state__title { margin: 0 0 var(--space-sm) 0; color: var(--color-text); }

/* Animations auxiliares */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(12px); transition: all 500ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

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