:root, [data-theme="matrix"] {
  --background: #000000;
  --primary: #22c55e;
  --primary-hover: #4ade80;
  --primary-transparent-10: rgba(34, 197, 94, 0.1);
  --primary-transparent-20: rgba(34, 197, 94, 0.2);
  --primary-transparent-30: rgba(34, 197, 94, 0.3);
  --primary-transparent-50: rgba(34, 197, 94, 0.5);
  --primary-transparent-60: rgba(34, 197, 94, 0.6);
  --primary-transparent-70: rgba(34, 197, 94, 0.7);
  --primary-transparent-80: rgba(34, 197, 94, 0.8);
  --text-muted: rgba(34, 197, 94, 0.5);
}

[data-theme="vaporwave"] {
  --background: #282a36;
  --primary: #ff79c6;
  --primary-hover: #ff92d0;
  --primary-transparent-10: rgba(255, 121, 198, 0.1);
  --primary-transparent-20: rgba(255, 121, 198, 0.2);
  --primary-transparent-30: rgba(255, 121, 198, 0.3);
  --primary-transparent-50: rgba(255, 121, 198, 0.5);
  --primary-transparent-60: rgba(255, 121, 198, 0.6);
  --primary-transparent-70: rgba(255, 121, 198, 0.7);
  --primary-transparent-80: rgba(255, 121, 198, 0.8);
  --text-muted: rgba(255, 121, 198, 0.5);
}

[data-theme="monochrome"] {
  --background: #121212;
  --primary: #e0e0e0;
  --primary-hover: #ffffff;
  --primary-transparent-10: rgba(224, 224, 224, 0.1);
  --primary-transparent-20: rgba(224, 224, 224, 0.2);
  --primary-transparent-30: rgba(224, 224, 224, 0.3);
  --primary-transparent-50: rgba(224, 224, 224, 0.5);
  --primary-transparent-60: rgba(224, 224, 224, 0.6);
  --primary-transparent-70: rgba(224, 224, 224, 0.7);
  --primary-transparent-80: rgba(224, 224, 224, 0.8);
  --text-muted: rgba(224, 224, 224, 0.5);
}


/* --- Estilos do projeto com variáveis --- */
@font-face {
  font-family: "IBM Plex Mono";
  src: url("./fonts/IBMPlexMono-Medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

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

body {
  font-family: "IBM Plex Mono", monospace;
  background-color: var(--background);
  color: var(--primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s, color 0.3s;
}

.container {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left,
.header-center,
.header-right {
  display: flex;
  align-items: center;
}

.header-center {
  flex-grow: 1;
  justify-content: center;
}

.header-right {
  gap: 0.75rem;
  position: relative;
}

h1 {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.status-text {
  font-size: 0.75rem;
  color: var(--primary-transparent-70);
  text-align: center;
}

.creator {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.creator a {
  color: var(--primary-transparent-80);
  text-decoration: none;
}

.creator a:hover {
  text-decoration: underline;
}

.icon-button {
  background-color: transparent;
  color: var(--primary);
  border: 1px solid var(--primary-transparent-30);
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.icon-button:hover {
  background-color: var(--primary-transparent-10);
  border-color: var(--primary-transparent-50);
}

form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

input {
  flex: 1;
  background-color: transparent;
  border: 1px solid var(--primary-transparent-30);
  color: var(--primary);
  height: 2.5rem;
  padding: 0 0.75rem;
  outline: none;
  font-family: "IBM Plex Mono", monospace;
}

input:focus {
  border-color: var(--primary-transparent-60);
}

button[type="submit"] {
  background-color: var(--primary-transparent-20);
  color: var(--primary);
  border: 1px solid var(--primary-transparent-30);
  height: 2.5rem;
  width: 2.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

button[type="submit"]:hover {
  background-color: var(--primary-transparent-30);
}

.snake-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.snake-grid {
  display: grid;
  gap: 4px;
  position: relative;
  aspect-ratio: 1 / 1;
}

.snake-segment {
  background-color: var(--primary-transparent-80);
  border-radius: 2px;
  width: 100%;
  height: 100%;
  position: relative;
  cursor: pointer;
  transition: background-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.snake-segment:hover {
  background-color: var(--primary-hover);
}

.snake-head {
  background-color: var(--primary);
}

.snake-eyes {
  display: flex;
  gap: 8px;
}

.snake-eye {
  width: 6px;
  height: 6px;
  background-color: var(--background);
  border-radius: 50%;
}

.task-tooltip {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -110%);
  background-color: var(--background);
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 0.5rem;
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
  font-family: "IBM Plex Mono", monospace;
  border-radius: 4px;
}

.snake-segment:hover .task-tooltip {
  opacity: 1;
}

footer {
  margin-top: 2rem;
  padding-top: 1rem;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 100;
  overflow: hidden;
  backdrop-filter: blur(3px);
}

.modal-content {
  background-color: var(--background);
  margin: 5% auto;
  padding: 1.5rem;
  border: 1px solid var(--primary);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.3s;
  font-family: "IBM Plex Mono", monospace;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--primary-transparent-30);
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 500;
}

.close-button {
  background: transparent;
  border: none;
  color: var(--primary);
  cursor: pointer;
  width: auto;
  height: auto;
}

.close-button:hover {
  color: var(--primary-hover);
}

.modal-body {
  line-height: 1.6;
  overflow-y: auto;
  padding-right: 0.5rem;
  max-height: 60vh;
}

.modal-body::-webkit-scrollbar {
  width: 6px;
}

.modal-body::-webkit-scrollbar-track {
  background: var(--primary-transparent-10);
}

.modal-body::-webkit-scrollbar-thumb {
  background-color: var(--primary-transparent-50);
  border-radius: 3px;
}

.task-edit-input {
    width: 90%;
    height: 90%;
    background-color: var(--background);
    border: 1px solid var(--primary-hover);
    color: var(--primary);
    text-align: center;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.75rem;
    outline: none;
    border-radius: 2px;
}

.theme-panel {
    display: none; 
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background-color: var(--background);
    border: 1px solid var(--primary-transparent-30);
    border-radius: 8px;
    padding: 0.5rem;
    z-index: 20;
    animation: fadeIn 0.2s;
}

.theme-panel.active {
    display: block;
}

.theme-option {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    border: 2px solid var(--background);
    cursor: pointer;
    display: inline-block;
    margin: 0.25rem;
    outline: 1px solid var(--primary-transparent-50);
}

.theme-option:hover {
    transform: scale(1.1);
}

.theme-option[data-theme="matrix"] { background-color: #22c55e; }
.theme-option[data-theme="vaporwave"] { background-color: #ff79c6; }
.theme-option[data-theme="monochrome"] { background-color: #e0e0e0; }


/* Responsive */
@media (max-width: 768px) {
  header {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .header-left {
    flex-basis: 100%;
    justify-content: center;
  }

  .header-center {
    order: 3;
    flex-basis: 100%;
  }

  .header-right {
    order: 2;
    width: 100%;
    justify-content: center;
  }

  .modal-content {
    margin: 3% auto;
    width: 95%;
    padding: 1rem;
    max-height: 85vh;
  }

  .modal-body {
    max-height: 65vh;
  }

  .modal-header h2 {
    font-size: 1.1rem;
  }
}