/* =========================
   GLOBAL
========================= */
:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #07070c;
  color: #eaeaea;
}

html {
  box-sizing: border-box;
  min-height: 100%;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
  background: #07070c;
  color: #eaeaea;
  overflow-x: hidden;
}

button,
input,
textarea {
  font: inherit;
}

button {
  width: 100%;
  margin: 8px 0;
  padding: 12px 14px;
  border: 1px solid rgba(0, 255, 255, 0.4);
  border-radius: 10px;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.35);
  color: #00fff7;
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.45);
  box-shadow: inset 0 0 6px rgba(0, 255, 255, 0.08);
  transition: transform 0.2s ease, background 0.2s ease,
    box-shadow 0.2s ease, border-color 0.2s ease;
}

button:hover {
  background: rgba(0, 255, 255, 0.18);
  box-shadow: 0 0 22px rgba(0, 255, 255, 0.45);
  transform: translateY(-1px);
}

/* =========================
   APP LAYOUT
========================= */
.app {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}

.sidebar {
  width: 260px;
  min-width: 220px;
  padding: 18px;
  border-right: 1px solid rgba(0, 255, 255, 0.35);
  background: rgba(8, 10, 18, 0.88);
  backdrop-filter: blur(14px);
  box-shadow: inset -1px 0 18px rgba(0, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
}

.mobile-menu-button {
  display: none;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 8px;
  left: 12px;
  z-index: 9999;
  width: 46px;
  min-width: 46px;
  height: 46px;
  margin: 0;
  padding: 0;
  border-radius: 14px;
  border: 2px solid rgba(0, 255, 255, 0.75);
  background: rgba(0, 0, 0, 0.85);
  color: #00fff7;
  cursor: pointer;
  font-size: 24px;
  text-shadow: 0 0 12px rgba(0, 255, 255, 0.8);
  box-shadow: 0 0 28px rgba(0, 255, 255, 0.5);
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.mobile-menu-button.centered {
  left: 50%;
  transform: translateX(-50%);
}

.logo {
  font-size: 26px;
  margin-bottom: 20px;
  letter-spacing: 1px;
  font-weight: 700;
  color: #00fff7;
  text-shadow: 0 0 14px rgba(0, 255, 255, 0.8);
}

/* ARCHIVOS */
#fileList {
  margin-top: 12px;
  flex: 1;
  overflow-y: auto;
  padding-right: 2px;
}

.file {
  padding: 10px 12px;
  margin-top: 6px;
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  color: #bbb;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(0, 255, 255, 0.08);
}

.file:hover {
  color: #00fff7;
  background: rgba(0, 255, 255, 0.12);
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.8);
  box-shadow: 0 0 16px rgba(0, 255, 255, 0.16);
}

.file.active {
  background: rgba(0, 255, 255, 0.2);
  border-color: rgba(0, 255, 255, 0.5);
  box-shadow: 0 0 12px rgba(0, 255, 255, 0.3);
}

/* =========================
   EDITOR AREA
========================= */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.65);
  border-bottom: 1px solid rgba(0, 255, 255, 0.22);
  box-shadow: inset 0 -1px 12px rgba(0, 255, 255, 0.06);
}

.tab {
  padding: 8px 12px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  background: rgba(0, 255, 255, 0.06);
  border: 1px solid rgba(0, 255, 255, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
  font-size: 14px;
  color: #aaa;
}

.tab:hover {
  color: #00fff7;
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.18);
}

.tab.active {
  color: #00fff7;
  border-color: rgba(0, 255, 255, 0.4);
  box-shadow: 0 0 18px rgba(0, 255, 255, 0.38);
}

.close-tab {
  color: #ff5f78;
}

.empty-state {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  opacity: 0.55;
  color: #999;
  padding: 24px;
  text-align: center;
}

#editor {
  display: block;
  flex: 1;
  min-height: 0;
  width: 100%;
  border: none;
  outline: none;
  padding: 22px;
  font-size: 16px;
  resize: none;
  background: transparent;
  color: #eaeaea;
  line-height: 1.7;
  overflow: auto;
}

/* =========================
   MODAL
========================= */
.modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.78);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
}

.modal-box {
  width: min(92%, 380px);
  max-width: 420px;
  background: rgba(11, 11, 18, 0.98);
  padding: 24px;
  border-radius: 16px;
  border: 1px solid rgba(0, 255, 255, 0.24);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.16);
}

.modal-box h2 {
  margin-top: 0;
  margin-bottom: 18px;
  font-size: 20px;
  color: #eaeaea;
}

.modal-box input {
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 14px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: #eaeaea;
}

.modal-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hidden {
  display: none !important;
}

/* =========================
   TEMAS
========================= */
body.dark {
  background: #07070c;
  color: #eaeaea;
}

body.paper {
  background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
  color: #fff;
}

body.nature {
  background: linear-gradient(135deg, #0f1a14, #14251d);
  color: #d7f5e9;
}

body.midnight {
  background: linear-gradient(135deg, #0b1020, #111a33);
  color: #cdd6f4;
}

body.sunset {
  background: linear-gradient(135deg, #1a0f0a, #2a1410);
  color: #ffd6a5;
}

body.glass {
  background: linear-gradient(135deg, #0f0f1a, #1a1a2e);
  color: #ffffff;
}

body.retro {
  background: linear-gradient(135deg, #0f0f0f, #1a1a1a);
  color: #fff;
}

body.parchment {
  background: linear-gradient(135deg, #2a1810, #3a2418);
  color: #fff;
}

body.paper button {
  color: #fff;
  text-shadow: none;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

body.paper button:hover {
  background: rgba(0, 0, 0, 0.7);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

body.paper .logo,
body.paper .file,
body.paper .tab,
body.paper .empty-state {
  color: #fff;
}

body.retro button {
  color: #fff;
  text-shadow: none;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

body.retro button:hover {
  background: rgba(0, 0, 0, 0.7);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

body.retro .logo,
body.retro .file,
body.retro .tab,
body.retro .empty-state {
  color: #fff;
}

body.parchment button {
  color: #fff;
  text-shadow: none;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

body.parchment button:hover {
  background: rgba(0, 0, 0, 0.7);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

body.parchment .logo,
body.parchment .file,
body.parchment .tab,
body.parchment .empty-state {
  color: #fff;
}

body.nature button,
body.midnight button,
body.sunset button {
  color: #333;
  text-shadow: none;
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.3);
}

body.nature button:hover,
body.midnight button:hover,
body.sunset button:hover {
  background: rgba(0, 0, 0, 0.1);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);
}

body.paper .mobile-menu-button {
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
  text-shadow: none;
}

body.retro .mobile-menu-button {
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
  text-shadow: none;
}

body.parchment .mobile-menu-button {
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
  text-shadow: none;
}

body.nature .logo,
body.nature .file,
body.nature .tab,
body.nature .empty-state,
body.midnight .logo,
body.midnight .file,
body.midnight .tab,
body.midnight .empty-state,
body.sunset .logo,
body.sunset .file,
body.sunset .tab,
body.sunset .empty-state {
  color: #fff;
}

body.nature .mobile-menu-button,
body.midnight .mobile-menu-button,
body.sunset .mobile-menu-button {
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
  text-shadow: none;
}

.theme-button.active {
  background: rgba(0, 255, 255, 0.3) !important;
  box-shadow: 0 0 16px rgba(0, 255, 255, 0.5) !important;
  border-color: rgba(0, 255, 255, 0.8) !important;
}

body.paper #editor,
body.retro #editor,
body.parchment #editor,
body.nature #editor,
body.midnight #editor,
body.sunset #editor {
  color: #fff;
}

body.paper #editor::placeholder,
body.retro #editor::placeholder,
body.parchment #editor::placeholder,
body.nature #editor::placeholder,
body.midnight #editor::placeholder,
body.sunset #editor::placeholder {
  color: #666;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 900px) {
  .app {
    flex-direction: column;
  }

  .mobile-menu-button {
    display: inline-flex;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 260px;
    max-width: 80%;
    transform: translateX(-100%) !important;
    transition: transform 0.3s ease !important;
    border-right: 1px solid rgba(0, 255, 255, 0.15);
    border-bottom: none;
    padding: 20px;
    z-index: 60;
  }

  .sidebar.open {
    transform: translateX(0) !important;
  }

  .editor-area {
    width: 100%;
    min-height: 100vh;
  }

  .tabs {
    padding: 10px 8px 10px 68px;
    gap: 8px;
  }

  .tab {
    flex: 1 1 48%;
    min-width: 140px;
  }

  button {
    font-size: 15px;
  }

  .file {
    font-size: 14px;
  }

  .logo {
    margin-left: 60px;
  }

  .modal-box {
    width: min(94%, 360px);
    padding: 20px;
  }
}

@media (max-width: 660px) {
  body {
    font-size: 15px;
  }

  .sidebar {
    padding: 12px;
  }

  .logo {
    font-size: 22px;
    margin-bottom: 16px;
  }

  .tabs {
    gap: 6px;
  }

  .tab {
    padding: 10px 12px;
    font-size: 13px;
  }

  .modal-box {
    padding: 18px;
  }

  .modal-box input,
  button {
    padding: 11px 12px;
  }
}