:root {
  color-scheme: light dark;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: #f4f7fb;
  color: #1b1b1f;
  --card-bg: rgba(255, 255, 255, 0.9);
  --card-border: rgba(27, 27, 31, 0.1);
  --accent: #0b57d0;
  --accent-muted: rgba(11, 87, 208, 0.08);
  --danger: #b00020;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(160deg, #eef2ff 0%, #f7fbff 50%, #eff7ff 100%);
}

main {
  display: grid;
  gap: 1.5rem;
  padding: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.08);
}

.card[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.app-header, .app-footer {
  text-align: center;
  padding: 1.5rem;
}

.app-header {
  background: linear-gradient(120deg, rgba(11, 87, 208, 0.85), rgba(79, 70, 229, 0.9));
  color: white;
  box-shadow: 0 10px 25px rgba(11, 87, 208, 0.35);
}

.app-header .tagline {
  margin: 0.5rem auto 0;
  max-width: 48rem;
  line-height: 1.5;
}

.app-footer {
  font-size: 0.9rem;
  color: rgba(27, 27, 31, 0.7);
}

.field-grid {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.field-grid label {
  font-weight: 600;
  font-size: 0.95rem;
}

input, textarea, button {
  font: inherit;
}

input[type="text"],
input[type="password"],
input[type="url"],
input[type="file"],
textarea {
  padding: 0.6rem 0.7rem;
  border-radius: 8px;
  border: 1px solid rgba(27, 27, 31, 0.2);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.04);
}

input[type="file"] {
  padding: 0.4rem 0.5rem;
}

textarea {
  resize: vertical;
  min-height: 6rem;
}

.password-row {
  display: flex;
  gap: 0.5rem;
}

.password-row input {
  flex: 1;
}

button {
  border-radius: 999px;
  padding: 0.6rem 1.4rem;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button:not(:disabled):hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 15px rgba(11, 87, 208, 0.25);
}

button.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(11, 87, 208, 0.3);
  box-shadow: none;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.checkbox input {
  transform: scale(1.2);
}

.counter {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(27, 27, 31, 0.7);
  margin-left: 0.4rem;
}

.uploader {
  margin-bottom: 2rem;
  background: rgba(11, 87, 208, 0.03);
  padding: 1rem;
  border-radius: 12px;
  border: 1px dashed rgba(11, 87, 208, 0.25);
}

.uploader-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  align-items: center;
}

.cropper {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

#avatarCanvas {
  background: rgba(27, 27, 31, 0.05);
  border-radius: 16px;
  cursor: grab;
}

#avatarCanvas:active {
  cursor: grabbing;
}

#avatarCanvas.disabled,
#bannerCanvas.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.slider-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 8rem;
}

#avatarZoom {
  width: 100%;
}

#bannerCanvas {
  background: rgba(27, 27, 31, 0.05);
  border-radius: 16px;
  display: block;
  max-width: 100%;
}

.current-profile {
  border: 1px solid rgba(27, 27, 31, 0.15);
  border-radius: 12px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.6);
  margin-bottom: 1.5rem;
  display: grid;
  gap: 0.75rem;
}

.current-profile .identity {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.current-profile img {
  border-radius: 50%;
  width: 64px;
  height: 64px;
  object-fit: cover;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-muted);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.log-card {
  margin: 1.5rem;
}

#log {
  min-height: 8rem;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.88);
  color: #d8e5ff;
  border-radius: 12px;
  overflow: auto;
  max-height: 18rem;
}

.log-entry {
  margin-bottom: 0.75rem;
}

.log-entry:last-child {
  margin-bottom: 0;
}

.log-entry .timestamp {
  color: rgba(216, 229, 255, 0.6);
  font-size: 0.8rem;
}

.log-entry.error {
  color: #ffb4ab;
}

.session-info {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  margin-top: 1rem;
  background: rgba(11, 87, 208, 0.05);
  padding: 0.75rem 1rem;
  border-radius: 10px;
}

.session-info.hidden {
  display: none;
}

.hint {
  font-size: 0.9rem;
  color: rgba(27, 27, 31, 0.65);
  margin: 0 0 0.75rem;
}

@media (min-width: 960px) {
  main {
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    align-items: start;
  }

  #profile {
    grid-row: span 2;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    background-color: #0f172a;
    color: #e2e8f0;
    --card-bg: rgba(15, 23, 42, 0.9);
    --card-border: rgba(148, 163, 184, 0.2);
    --accent-muted: rgba(59, 130, 246, 0.12);
  }

  body {
    background: radial-gradient(circle at top, rgba(37, 99, 235, 0.25), rgba(15, 23, 42, 0.95));
  }

  input[type="text"],
  input[type="password"],
  input[type="url"],
  input[type="file"],
  textarea {
    background: rgba(15, 23, 42, 0.65);
    color: inherit;
    border-color: rgba(148, 163, 184, 0.35);
  }

  .checkbox {
    color: rgba(226, 232, 240, 0.85);
  }

  #log {
    background: rgba(15, 23, 42, 0.9);
    color: #cbd5f5;
  }
}