:root[data-theme='dark'] {
  --bg: #0b0d17;
  --bg-elevated: #131629;
  --text: #e8e9f5;
  --text-dim: #9a9dc2;
  --accent: #00f0ff;
  --accent-2: #ff2ee6;
  --accent-3: #7c4dff;
  --border: #2a2d4a;
  --danger: #ff4d6d;
  --glow: 0 0 8px, 0 0 20px;
}

:root[data-theme='light'] {
  --bg: #f4f5fb;
  --bg-elevated: #ffffff;
  --text: #14162b;
  --text-dim: #565a80;
  --accent: #0086a8;
  --accent-2: #b3009e;
  --accent-3: #5433c9;
  --border: #d8daef;
  --danger: #c8264a;
  --glow: 0 0 0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  transition: background 0.2s, color 0.2s;
}

/* Must win over #login-screen/#app-screen's own `display` declarations
   below, which share the same specificity otherwise (ID selector). */
.screen[hidden] {
  display: none !important;
}

/* --- Login --- */

#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.login-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: min(360px, 100%);
  text-align: center;
  box-shadow: var(--glow) rgba(0, 240, 255, 0.15);
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 1.8rem;
}

.tagline {
  color: var(--text-dim);
  margin: 0 0 24px;
}

.login-card label {
  display: block;
  text-align: left;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.login-card input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 18px;
}

.login-card input:focus {
  outline: 2px solid var(--accent);
}

.login-card button,
.header-actions button {
  cursor: pointer;
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: #05060d;
  box-shadow: var(--glow) rgba(0, 240, 255, 0.35);
  transition: transform 0.1s;
}

.login-card button {
  width: 100%;
}

.login-card button:hover,
.header-actions button:hover {
  transform: translateY(-1px);
}

.error-message {
  color: var(--danger);
  font-size: 0.9rem;
  margin-top: -4px;
}

/* --- App --- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.app-header h1 {
  margin: 0;
  font-size: 1.4rem;
  text-shadow: var(--glow) var(--accent-2);
}

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

.header-actions button {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

#theme-toggle {
  background: transparent;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.files-section {
  margin-top: 32px;
}

.files-section h2 {
  font-size: 1.1rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.files-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  flex-wrap: wrap;
}

.file-name {
  font-weight: 600;
  word-break: break-all;
}

.file-meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  white-space: nowrap;
}

.empty-message {
  color: var(--text-dim);
  font-style: italic;
}

/* --- Uppy neon accents --- */

.uppy-Dashboard-progressBarContainer,
.uppy-StatusBar-progress {
  filter: drop-shadow(0 0 6px var(--accent));
}

.uppy-Root {
  color-scheme: dark;
}

@media (max-width: 480px) {
  .app-header {
    padding: 12px 16px;
  }
  .app-header h1 {
    font-size: 1.15rem;
  }
}