* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  font-size: 12px;
}

/* TEMA WINDOWS 7 CLASSIC / AERO (Padrão) */
:root[data-theme="win7classic"] {
  --bg-main: #cbd5e1;
  --bg-top: linear-gradient(to bottom, #b9c9dc 0%, #a2b8d3 50%, #90a9c9 100%);
  --bg-sidebar: #f0f3f7;
  --bg-panel: #ffffff;
  --border-panel: #7b96b5;
  --text-main: #1e293b;
  --text-legend: #1e40af;
  --bg-btn: linear-gradient(to bottom, #ffffff 0%, #e1e9f2 50%, #d2dbe6 100%);
  --btn-border: #7088a8;
  --player-bar-bg: linear-gradient(to bottom, #334155 0%, #0f172a 100%);
  --player-bar-text: #38bdf8;
  --window-shadow: 0px 4px 12px rgba(0, 0, 0, 0.25);
}

:root[data-theme="normal"] {
  --bg-main: #d4d0c8;
  --bg-top: #ece9d8;
  --bg-sidebar: #ece9d8;
  --bg-panel: #f7f5ef;
  --border-panel: #0055ea;
  --text-main: #000000;
  --text-legend: #001199;
  --bg-btn: linear-gradient(to bottom, #ffffff, #ece9d8);
  --btn-border: #003c74;
  --player-bar-bg: #222222;
  --player-bar-text: #00ffcc;
  --window-shadow: none;
}

:root[data-theme="light"] {
  --bg-main: #f1f5f9;
  --bg-top: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-panel: #f8fafc;
  --border-panel: #cbd5e1;
  --text-main: #0f172a;
  --text-legend: #2563eb;
  --bg-btn: #f1f5f9;
  --btn-border: #94a3b8;
  --player-bar-bg: #e2e8f0;
  --player-bar-text: #0284c7;
  --window-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

:root[data-theme="dark"] {
  --bg-main: #0f172a;
  --bg-top: #1e293b;
  --bg-sidebar: #1e293b;
  --bg-panel: #334155;
  --border-panel: #38bdf8;
  --text-main: #f8fafc;
  --text-legend: #38bdf8;
  --bg-btn: #475569;
  --btn-border: #64748b;
  --player-bar-bg: #020617;
  --player-bar-text: #38bdf8;
  --window-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

:root[data-theme="onix"] {
  --bg-main: #0f1115;
  --bg-top: #161920;
  --bg-sidebar: #12141a;
  --bg-panel: #1a1d24;
  --border-panel: #ff0055;
  --text-main: #e1e1e6;
  --text-legend: #ff0055;
  --bg-btn: #20232c;
  --btn-border: #ff0055;
  --player-bar-bg: #090a0f;
  --player-bar-text: #ff0055;
  --window-shadow: 0 0 10px rgba(255, 0, 85, 0.2);
}

:root[data-theme="amoled"] {
  --bg-main: #000000;
  --bg-top: #000000;
  --bg-sidebar: #000000;
  --bg-panel: #050505;
  --border-panel: #333333;
  --text-main: #ffffff;
  --text-legend: #ffffff;
  --bg-btn: #111111;
  --btn-border: #444444;
  --player-bar-bg: #000000;
  --player-bar-text: #ffffff;
  --window-shadow: none;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.top-menu {
  background: var(--bg-top);
  border-bottom: 1px solid var(--btn-border);
  padding: 4px 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--window-shadow);
}

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--bg-panel);
  border: 1px solid var(--btn-border);
  box-shadow: 0 6px 16px rgba(0,0,0,0.25);
  border-radius: 3px;
  z-index: 100;
  min-width: 200px;
}

.dropdown-content button {
  width: 100%;
  text-align: left;
  padding: 6px 12px;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
}

.dropdown-content button:hover {
  background-color: #2563eb;
  color: #fff;
}

.dropdown-content hr {
  border: none;
  border-top: 1px solid var(--btn-border);
}

.menu-btn {
  background: var(--bg-btn);
  border: 1px solid var(--btn-border);
  border-radius: 3px;
  padding: 4px 10px;
  color: var(--text-main);
  cursor: pointer;
  font-weight: 500;
}

.menu-btn:hover {
  filter: brightness(1.1);
  border-color: #2563eb;
}

.theme-selector {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.theme-selector select {
  padding: 3px 6px;
  border-radius: 3px;
}

.main-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 35px);
}

.sidebar {
  width: 290px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--btn-border);
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel-section {
  border: 1px solid var(--border-panel);
  border-radius: 4px;
  padding: 10px;
  background-color: var(--bg-panel);
  box-shadow: var(--window-shadow);
}

.panel-section legend {
  color: var(--text-legend);
  font-weight: bold;
  padding: 0 4px;
}

label {
  display: block;
  margin-top: 6px;
  margin-bottom: 2px;
}

input[type="number"], input[type="text"], select, input[type="file"] {
  width: 100%;
  padding: 4px;
  border: 1px solid var(--btn-border);
  border-radius: 3px;
  background-color: #fff;
  color: #000;
}

.file-info {
  margin-top: 4px;
  font-style: italic;
  opacity: 0.8;
}

.input-row {
  display: flex;
  gap: 8px;
}

.input-field {
  flex: 1;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 3px;
  margin-top: 6px;
  max-height: 180px;
  overflow-y: auto;
  padding: 2px;
}

.palette-grid input[type="color"] {
  width: 100%;
  height: 22px;
  border: 1px solid #666;
  border-radius: 2px;
  padding: 0;
  cursor: pointer;
}

.audio-controls {
  display: flex;
  gap: 6px;
  margin-top: 10px;
}

.btn {
  flex: 1;
  padding: 5px;
  border: 1px solid var(--btn-border);
  border-radius: 3px;
  background: var(--bg-btn);
  color: var(--text-main);
  cursor: pointer;
  font-weight: 600;
  text-align: center;
}

.btn:hover {
  filter: brightness(1.15);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.canvas-container {
  flex: 1;
  background-color: #000;
  display: flex;
  flex-direction: column;
}

.canvas-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 12px;
}

canvas {
  background-color: #000;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border: 1px solid #444;
  box-shadow: 0 0 15px rgba(0,0,0,0.8);
}

.player-bar {
  background: var(--player-bar-bg);
  color: var(--player-bar-text);
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--btn-border);
}

.player-bar input[type="range"] {
  flex: 1;
  cursor: pointer;
}

.status-bar {
  background: var(--player-bar-bg);
  color: var(--player-bar-text);
  opacity: 0.85;
  padding: 3px 12px 6px 12px;
  display: flex;
  justify-content: space-between;
  font-family: monospace;
}

.modal-overlay {
  position: fixed;
  top: 0; left: 0; width: 100vw; height: 100vh;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}

.modal-overlay.hidden, .dropdown-content.hidden {
  display: none !important;
}

.modal-content {
  background: var(--bg-panel);
  border: 1px solid var(--border-panel);
  border-radius: 6px;
  width: 360px;
  padding: 12px;
  color: var(--text-main);
  box-shadow: var(--window-shadow);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--btn-border);
  padding-bottom: 6px;
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
}

.modal-body {
  padding: 12px 0;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}