/* src/css/style.css */
:root {
  --bg-color: #1a1b26;      /* Dark mode canvas base */
  --toolbar-bg: rgba(30, 30, 46, 0.85); /* Glassmorphism background */
  --text-color: #c0caf5;
  --accent-color: #7aa2f7;
  --hover-color: #3b4261;
}

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

body, html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-color);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
  /* Impede selecao de texto acidental ao desenhar */
  user-select: none;
  /* OTIMIZACAO MOBILE: Blinda comportamento de pull-to-refresh */
  overscroll-behavior-y: none;
}

#bg-canvas, #main-canvas {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100vw;
  height: 100vh;
  touch-action: none; /* ESSENCIAL: Impede o navegador de rolar a pagina ao desenhar */
}

#bg-canvas {
  z-index: 1;
  background-color: #1e1e1e;
}

#main-canvas {
  z-index: 2;
  cursor: crosshair;
  background-color: transparent; /* Permite que o bg-canvas seja visto */
}

/* Toolbar Style - Glassmorphism */
#toolbar {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 15px;
  background: var(--toolbar-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 10px 20px;
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  touch-action: none; /* Previne scroll no menu flutuante em mobile */
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55), border-radius 0.3s, bottom 0.3s, padding 0.3s;
}

.secondary-tools {
  display: flex;
  align-items: center;
  gap: 15px;
}

.toolbar-hidden {
  transform: translate(-50%, 150%) !important;
}

.restore-toolbar-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--toolbar-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.restore-toolbar-btn.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
}

.restore-toolbar-btn:hover {
  background: var(--hover-color);
  transform: scale(1.1);
}

/* Indicador de PDF Aberto/Minimizado */
.has-pdf {
  position: relative;
  background: rgba(23, 162, 184, 0.4) !important;
  border-color: #17a2b8 !important;
}
.has-pdf::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 10px;
  height: 10px;
  background-color: #ff5c5c;
  border-radius: 50%;
  border: 2px solid var(--toolbar-bg);
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 8px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  padding-right: 15px;
}

.tool-group:last-child {
  border-right: none;
  padding-right: 0;
}

.tool-btn {
  background: transparent;
  border: none;
  color: white;
  font-size: 1.2rem;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-btn:hover {
  background: var(--hover-color);
}

.tool-btn.active {
  background: var(--accent-color);
  box-shadow: 0 0 10px rgba(122, 162, 247, 0.5);
}

#color-picker {
  -webkit-appearance: none;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  background: transparent;
}
#color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}
#color-picker::-webkit-color-swatch {
  border: 2px solid var(--text-color);
  border-radius: 50%;
}

#size-picker {
  width: 80px;
  cursor: pointer;
}

/* Estilos do Cartao de Fundo (Modal) */
.bg-card {
  transition: transform 0.2s, box-shadow 0.2s;
}
.bg-card:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px var(--accent-color);
}

/* Responsividade Mobile */
.mobile-only {
  display: none;
}

@media (max-width: 768px) {
  .mobile-only {
    display: flex;
  }
  
  .mobile-hide {
    display: none !important;
  }

  /* Gaveta Flutuante para Mobile */
  #toolbar {
    flex-wrap: nowrap;
    width: auto;
    border-radius: 50px;
    padding: 10px 20px;
    transition: all 0.3s ease;
  }

  .secondary-tools {
    display: none;
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  #toolbar.menu-expanded {
    flex-direction: column;
    align-items: center;
    border-radius: 24px;
    padding: 20px;
    width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }

  #toolbar.menu-expanded .secondary-tools {
    display: flex;
    margin-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 15px;
  }

  #toolbar.menu-expanded .tool-group {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-right: 0;
    padding-bottom: 15px;
    margin-bottom: 15px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }
  
  #toolbar.menu-expanded .tool-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
  }

  /* Ajustes no seletor de range para não esmagar no mobile */
  #size-picker {
    width: 100px;
  }
}

@media (max-width: 480px) {
  #toolbar {
    padding: 8px 16px;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  }
  
  #toolbar.menu-expanded {
    padding: 15px;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    width: 95vw;
  }

  .tool-btn {
    width: 36px;
    height: 36px;
    font-size: 1.1rem;
  }
  
  #size-picker {
    width: 80px;
  }
}