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

:root {
  --bg: #0f0f13;
  --bg2: #16161d;
  --bg3: #1e1e28;
  --border: #2a2a38;
  --accent: #6366f1;
  --accent2: #818cf8;
  --text: #e2e2f0;
  --text2: #9494b0;
  --success: #22c55e;
  --danger: #ef4444;
  --sidebar-w: 200px;
  --nav-h: 56px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
}

#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 60% 40%, #1a1a2e 0%, #0f0f13 70%);
}

.login-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.login-logo { margin-bottom: 4px; }

.login-box h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.login-sub {
  color: var(--text2);
  font-size: 13px;
  margin-top: -8px;
}

.form-group { width: 100%; }

.form-group input {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus { border-color: var(--accent); }

#login-btn {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  margin-top: 4px;
}

#login-btn:hover { background: var(--accent2); }
#login-btn:active { transform: scale(0.98); }

.error-msg {
  color: var(--danger);
  font-size: 13px;
  min-height: 18px;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.nav-search {
  flex: 1;
  max-width: 340px;
  margin: 0 24px;
}

.nav-search input {
  width: 100%;
  padding: 8px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.nav-search input:focus { border-color: var(--accent); }

.nav-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-user span {
  color: var(--text2);
  font-size: 13px;
}

.btn-logout {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.btn-logout:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.sidebar {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: var(--sidebar-w);
  height: calc(100vh - var(--nav-h));
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 90;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text2);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  transition: all 0.2s;
  width: 100%;
}

.tab-btn:hover {
  background: var(--bg3);
  color: var(--text);
}

.tab-btn.active {
  background: rgba(99,102,241,0.15);
  color: var(--accent2);
}

.content {
  margin-top: var(--nav-h);
  margin-left: var(--sidebar-w);
  padding: 28px;
  min-height: calc(100vh - var(--nav-h));
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-header h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.btn-download-all {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(99,102,241,0.15);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 8px;
  color: var(--accent2);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-download-all:hover { background: rgba(99,102,241,0.25); }

.new-comando-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.new-comando-box input {
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.new-comando-box input:focus { border-color: var(--accent); }

.new-comando-box textarea {
  padding: 12px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  font-family: 'Courier New', monospace;
  outline: none;
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
  transition: border-color 0.2s;
}

.new-comando-box textarea:focus { border-color: var(--accent); }

.btn-save {
  padding: 10px 20px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-start;
  transition: background 0.2s;
}

.btn-save:hover { background: var(--accent2); }

.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  margin-bottom: 24px;
  transition: all 0.2s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.upload-zone:hover {
  border-color: var(--accent);
  background: rgba(99,102,241,0.05);
}

.upload-zone svg { color: var(--text2); }

.upload-zone p {
  color: var(--text2);
  font-size: 14px;
}

.btn-upload-label {
  display: inline-block;
  padding: 9px 20px;
  background: var(--accent);
  border-radius: 8px;
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-upload-label:hover { background: var(--accent2); }

.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.file-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s;
}

.file-card:hover { border-color: #3a3a50; }

.file-card-name {
  font-size: 13px;
  font-weight: 600;
  word-break: break-all;
  color: var(--text);
}

.file-card-meta {
  font-size: 12px;
  color: var(--text2);
  display: flex;
  gap: 10px;
}

.file-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn-action {
  flex: 1;
  padding: 7px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.btn-action:hover {
  background: var(--bg3);
  color: var(--text);
}

.btn-action.danger:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.btn-action.primary:hover {
  border-color: var(--accent);
  color: var(--accent2);
}

.file-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

#search-results {
  position: fixed;
  top: var(--nav-h);
  left: var(--sidebar-w);
  right: 0;
  bottom: 0;
  background: var(--bg);
  z-index: 80;
  padding: 28px;
  overflow-y: auto;
  display: none;
}

#search-results.active { display: block; }

.search-header {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text2);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 200;
  backdrop-filter: blur(2px);
}

.modal-box {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: min(700px, 90vw);
  max-height: 70vh;
  z-index: 201;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 14px;
}

.modal-header button {
  background: none;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 16px;
  transition: color 0.2s;
}

.modal-header button:hover { color: var(--text); }

#modal-content {
  padding: 20px;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.25s;
  z-index: 300;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success {
  background: rgba(34,197,94,0.15);
  border: 1px solid rgba(34,197,94,0.3);
  color: #4ade80;
}

.toast.error {
  background: rgba(239,68,68,0.15);
  border: 1px solid rgba(239,68,68,0.3);
  color: #f87171;
}

.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text2);
  grid-column: 1/-1;
  font-size: 14px;
}

@media (max-width: 640px) {
  .sidebar { display: none; }
  .content { margin-left: 0; padding: 16px; }
  #search-results { left: 0; }
}