/* meutexto.org — Design tokens
   Single source of truth for colors, type, spacing, radii, motion.
   Imported by every page. */

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

:root {
  /* — Surfaces */
  --mt-bg: #FAFAFA;
  --mt-surface: #FFFFFF;
  --mt-surface-elevated: #FFFFFF;
  --mt-surface-sunken: #F5F5F5;
  --mt-border: #EAEAEA;
  --mt-border-strong: #D4D4D4;

  /* — Text */
  --mt-text-primary: #0A0A0A;
  --mt-text-secondary: #525252;
  --mt-text-muted: #999999;

  /* — Accent (azul confiança) */
  --mt-accent: #2563EB;
  --mt-accent-hover: #1D4ED8;
  --mt-accent-active: #1E40AF;
  --mt-accent-soft: #EFF6FF;
  --mt-accent-text: #FFFFFF;
  --mt-accent-ring: rgba(37, 99, 235, 0.18);

  /* — States */
  --mt-success: #10B981;
  --mt-success-soft: #ECFDF5;
  --mt-warning: #F59E0B;
  --mt-warning-soft: #FFFBEB;
  --mt-danger: #EF4444;
  --mt-danger-soft: #FEF2F2;

  /* — Premium */
  --mt-premium-from: #2563EB;
  --mt-premium-to: #7C3AED;
  --mt-premium-gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --mt-premium-soft: #F5F3FF;

  /* — Type scale (mobile / desktop handled inline) */
  --mt-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mt-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* — Spacing scale (4px base) */
  --mt-s-1: 4px;
  --mt-s-2: 8px;
  --mt-s-3: 12px;
  --mt-s-4: 16px;
  --mt-s-5: 20px;
  --mt-s-6: 24px;
  --mt-s-8: 32px;
  --mt-s-10: 40px;
  --mt-s-12: 48px;
  --mt-s-16: 64px;
  --mt-s-20: 80px;
  --mt-s-24: 96px;

  /* — Radii */
  --mt-r-sm: 6px;
  --mt-r-md: 8px;
  --mt-r-lg: 12px;
  --mt-r-xl: 16px;
  --mt-r-full: 9999px;

  /* — Shadows (used sparingly) */
  --mt-shadow-xs: 0 1px 2px rgba(10, 10, 10, 0.04);
  --mt-shadow-sm: 0 1px 3px rgba(10, 10, 10, 0.06), 0 1px 2px rgba(10, 10, 10, 0.04);
  --mt-shadow-md: 0 4px 12px rgba(10, 10, 10, 0.06), 0 1px 3px rgba(10, 10, 10, 0.04);
  --mt-shadow-lg: 0 12px 32px rgba(10, 10, 10, 0.08), 0 4px 8px rgba(10, 10, 10, 0.04);

  /* — Motion */
  --mt-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --mt-dur-fast: 120ms;
  --mt-dur: 200ms;
  --mt-dur-slow: 300ms;

  /* — Layout */
  --mt-container: 1200px;
  --mt-header-h: 64px;
}

[data-theme="dark"] {
  --mt-bg: #0A0A0A;
  --mt-surface: #111111;
  --mt-surface-elevated: #1A1A1A;
  --mt-surface-sunken: #050505;
  --mt-border: #222222;
  --mt-border-strong: #333333;

  --mt-text-primary: #FAFAFA;
  --mt-text-secondary: #A3A3A3;
  --mt-text-muted: #737373;

  --mt-accent: #3B82F6;
  --mt-accent-hover: #60A5FA;
  --mt-accent-active: #93C5FD;
  --mt-accent-soft: #14213D;
  --mt-accent-ring: rgba(59, 130, 246, 0.3);

  --mt-success: #34D399;
  --mt-success-soft: #052E1A;
  --mt-warning: #FBBF24;
  --mt-warning-soft: #2A1F05;
  --mt-danger: #F87171;
  --mt-danger-soft: #2A0A0A;

  --mt-premium-soft: #1A0F2E;

  --mt-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --mt-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  --mt-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 0, 0, 0.3);
  --mt-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5), 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* ========== BASE ========== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--mt-font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--mt-text-primary);
  background: var(--mt-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  transition: background-color var(--mt-dur-slow) var(--mt-ease), color var(--mt-dur-slow) var(--mt-ease);
}
::selection { background: var(--mt-accent-soft); color: var(--mt-accent); }

/* Type scale utility classes */
.mt-h1 { font-size: 48px; line-height: 1.05; font-weight: 700; letter-spacing: -0.035em; }
.mt-h2 { font-size: 32px; line-height: 1.15; font-weight: 600; letter-spacing: -0.025em; }
.mt-h3 { font-size: 24px; line-height: 1.25; font-weight: 600; letter-spacing: -0.02em; }
.mt-h4 { font-size: 20px; line-height: 1.3;  font-weight: 600; letter-spacing: -0.015em; }
.mt-body { font-size: 16px; line-height: 1.55; font-weight: 400; }
.mt-body-strong { font-size: 16px; line-height: 1.55; font-weight: 500; }
.mt-small { font-size: 14px; line-height: 1.5; }
.mt-tiny { font-size: 12px; line-height: 1.4; letter-spacing: 0.01em; }
.mt-mono { font-family: var(--mt-font-mono); font-feature-settings: 'zero', 'ss01'; }

@media (min-width: 768px) {
  .mt-h1 { font-size: 64px; letter-spacing: -0.04em; }
  .mt-h2 { font-size: 40px; }
  .mt-h3 { font-size: 28px; }
  .mt-h4 { font-size: 22px; }
}

/* ========== FOCUS RING ========== */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--mt-accent);
  outline-offset: 2px;
  border-radius: var(--mt-r-sm);
}

/* ========== BUTTON ========== */
.mt-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  font-family: inherit; font-weight: 500;
  border: 1px solid transparent;
  border-radius: var(--mt-r-md);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color var(--mt-dur) var(--mt-ease),
              border-color var(--mt-dur) var(--mt-ease),
              color var(--mt-dur) var(--mt-ease),
              transform var(--mt-dur-fast) var(--mt-ease),
              box-shadow var(--mt-dur) var(--mt-ease);
  user-select: none;
}
.mt-btn:hover { text-decoration: none; }
.mt-btn:active:not(:disabled) { transform: scale(0.98); }
.mt-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.mt-btn-sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: var(--mt-r-sm); }
.mt-btn-md { height: 40px; padding: 0 16px; font-size: 14px; }
.mt-btn-lg { height: 48px; padding: 0 22px; font-size: 15px; border-radius: var(--mt-r-lg); }

.mt-btn-primary {
  background: var(--mt-accent); color: var(--mt-accent-text); border-color: var(--mt-accent);
}
.mt-btn-primary:hover:not(:disabled) { background: var(--mt-accent-hover); border-color: var(--mt-accent-hover); }
.mt-btn-primary:active:not(:disabled) { background: var(--mt-accent-active); }

.mt-btn-secondary {
  background: var(--mt-surface); color: var(--mt-text-primary); border-color: var(--mt-border-strong);
}
.mt-btn-secondary:hover:not(:disabled) { background: var(--mt-surface-sunken); border-color: var(--mt-text-secondary); }

.mt-btn-ghost {
  background: transparent; color: var(--mt-text-primary);
}
.mt-btn-ghost:hover:not(:disabled) { background: var(--mt-surface-sunken); }

.mt-btn-danger {
  background: var(--mt-danger); color: white; border-color: var(--mt-danger);
}
.mt-btn-danger:hover:not(:disabled) { filter: brightness(0.92); }

.mt-btn-link {
  background: transparent; color: var(--mt-accent); padding: 0 4px;
  height: auto; border: none;
}
.mt-btn-link:hover:not(:disabled) { text-decoration: underline; text-underline-offset: 3px; }

.mt-btn-premium {
  background: var(--mt-premium-gradient); color: white; border: none;
  box-shadow: 0 1px 0 rgba(255,255,255,0.2) inset, 0 1px 2px rgba(124, 58, 237, 0.3);
}
.mt-btn-premium:hover:not(:disabled) { filter: brightness(1.05); box-shadow: 0 1px 0 rgba(255,255,255,0.2) inset, 0 6px 16px rgba(124, 58, 237, 0.35); }

/* ========== INPUT / TEXTAREA ========== */
.mt-input, .mt-textarea {
  width: 100%;
  font-family: inherit; font-size: 14px;
  color: var(--mt-text-primary);
  background: var(--mt-surface);
  border: 1px solid var(--mt-border);
  border-radius: var(--mt-r-md);
  padding: 10px 12px;
  transition: border-color var(--mt-dur) var(--mt-ease), box-shadow var(--mt-dur) var(--mt-ease), background var(--mt-dur) var(--mt-ease);
}
.mt-input::placeholder, .mt-textarea::placeholder { color: var(--mt-text-muted); }
.mt-input:hover, .mt-textarea:hover { border-color: var(--mt-border-strong); }
.mt-input:focus, .mt-textarea:focus {
  border-color: var(--mt-accent);
  box-shadow: 0 0 0 3px var(--mt-accent-ring);
  outline: none;
}
.mt-input.mt-error, .mt-textarea.mt-error {
  border-color: var(--mt-danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}
.mt-textarea { resize: vertical; min-height: 96px; line-height: 1.55; }

.mt-label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--mt-text-primary); margin-bottom: 6px;
}
.mt-helper { font-size: 12px; color: var(--mt-text-muted); margin-top: 6px; }
.mt-helper.mt-error-text { color: var(--mt-danger); }

/* ========== CARD ========== */
.mt-card {
  background: var(--mt-surface);
  border: 1px solid var(--mt-border);
  border-radius: var(--mt-r-lg);
  padding: 24px;
  transition: border-color var(--mt-dur) var(--mt-ease), box-shadow var(--mt-dur) var(--mt-ease), transform var(--mt-dur) var(--mt-ease);
}
.mt-card-hover:hover { border-color: var(--mt-border-strong); box-shadow: var(--mt-shadow-sm); }
.mt-card-interactive:hover { border-color: var(--mt-accent); box-shadow: var(--mt-shadow-md); }

/* ========== BADGE ========== */
.mt-badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 500; line-height: 1;
  padding: 4px 8px; border-radius: var(--mt-r-full);
  border: 1px solid var(--mt-border);
  background: var(--mt-surface); color: var(--mt-text-secondary);
}
.mt-badge-success { background: var(--mt-success-soft); color: var(--mt-success); border-color: transparent; }
.mt-badge-warning { background: var(--mt-warning-soft); color: var(--mt-warning); border-color: transparent; }
.mt-badge-danger  { background: var(--mt-danger-soft);  color: var(--mt-danger);  border-color: transparent; }
.mt-badge-free    { background: var(--mt-surface-sunken); color: var(--mt-text-secondary); border-color: var(--mt-border); }
.mt-badge-premium {
  background: var(--mt-premium-soft);
  color: #7C3AED;
  border-color: transparent;
}
[data-theme="dark"] .mt-badge-premium { color: #C4B5FD; }
.mt-badge-accent  { background: var(--mt-accent-soft); color: var(--mt-accent); border-color: transparent; }

/* ========== SKELETON ========== */
.mt-skeleton {
  background: linear-gradient(90deg, var(--mt-border) 0%, var(--mt-surface-sunken) 50%, var(--mt-border) 100%);
  background-size: 200% 100%;
  animation: mt-skeleton-pulse 1.4s ease-in-out infinite;
  border-radius: var(--mt-r-sm);
}
@keyframes mt-skeleton-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ========== TOAST ========== */
.mt-toast {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 14px;
  background: var(--mt-surface-elevated);
  border: 1px solid var(--mt-border);
  border-radius: var(--mt-r-lg);
  box-shadow: var(--mt-shadow-lg);
  min-width: 320px; max-width: 420px;
}
.mt-toast-icon { flex-shrink: 0; width: 20px; height: 20px; }
.mt-toast-success .mt-toast-icon { color: var(--mt-success); }
.mt-toast-error .mt-toast-icon { color: var(--mt-danger); }
.mt-toast-info .mt-toast-icon { color: var(--mt-accent); }

/* ========== EMPTY STATE ========== */
.mt-empty {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 48px 24px;
  color: var(--mt-text-secondary);
}
.mt-empty-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--mt-surface-sunken);
  border: 1px solid var(--mt-border);
  border-radius: var(--mt-r-lg);
  margin-bottom: 16px;
  color: var(--mt-text-muted);
}

/* ========== HEADER ========== */
.mt-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--mt-header-h);
  background: color-mix(in srgb, var(--mt-surface) 80%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--mt-border);
}
.mt-header-inner {
  max-width: var(--mt-container);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex; align-items: center; gap: 32px;
}
.mt-nav { display: flex; gap: 4px; flex: 1; }
.mt-nav a {
  display: inline-flex; align-items: center; height: 32px; padding: 0 12px;
  font-size: 14px; color: var(--mt-text-secondary);
  text-decoration: none; border-radius: var(--mt-r-sm);
  transition: background var(--mt-dur) var(--mt-ease), color var(--mt-dur) var(--mt-ease);
}
.mt-nav a:hover, .mt-nav a.active { background: var(--mt-surface-sunken); color: var(--mt-text-primary); }

/* ========== CONTAINER ========== */
.mt-container {
  max-width: var(--mt-container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== UTILS ========== */
.mt-divider { height: 1px; background: var(--mt-border); border: none; margin: 0; }
.mt-link { color: var(--mt-accent); text-decoration: none; }
.mt-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.mt-kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px; padding: 0 6px;
  font-family: var(--mt-font-mono); font-size: 11px;
  background: var(--mt-surface-sunken);
  border: 1px solid var(--mt-border);
  border-bottom-width: 2px;
  border-radius: 4px;
  color: var(--mt-text-secondary);
}

/* Theme toggle button — neutral icon button */
.mt-icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--mt-r-md);
  color: var(--mt-text-secondary);
  cursor: pointer;
  transition: background var(--mt-dur) var(--mt-ease), color var(--mt-dur) var(--mt-ease), border-color var(--mt-dur) var(--mt-ease);
}
.mt-icon-btn:hover { background: var(--mt-surface-sunken); color: var(--mt-text-primary); }

/* Logo */
.mt-logo { display: inline-flex; align-items: center; gap: 8px; color: var(--mt-text-primary); text-decoration: none; }
.mt-logo:hover .mt-logo-mark { color: var(--mt-accent); }
.mt-logo-mark { color: var(--mt-text-primary); transition: color var(--mt-dur) var(--mt-ease); }
.mt-logo-word { font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }

/* Color swatch helper for design system page */
.mt-swatch {
  display: flex; flex-direction: column;
  border: 1px solid var(--mt-border);
  border-radius: var(--mt-r-md);
  overflow: hidden;
  background: var(--mt-surface);
}
.mt-swatch-color { height: 72px; width: 100%; }
.mt-swatch-meta { padding: 10px 12px; font-size: 12px; }
.mt-swatch-name { color: var(--mt-text-primary); font-weight: 500; }
.mt-swatch-hex  { color: var(--mt-text-muted); font-family: var(--mt-font-mono); font-size: 11px; margin-top: 2px; }