:root {
  --bg: #1a1a1a;
  --panel: #1e1e1e;
  --card: #242424;
  --text: #e0e0e0;
  --muted: #888;
  --blue: #4ea6ff;
  --red: #d65151;
  --accent: #2d3a55;
  --accent-hover: #3d4a65;
  --border: #333;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
               "Malgun Gothic", sans-serif;
  min-height: 100%;
}

.root {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 380px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.subtitle {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field span {
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.field input {
  padding: 10px 12px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}
.field input:focus {
  outline: none;
  border-color: var(--blue);
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-wrap input {
  flex: 1;
  padding-right: 56px;
}
.toggle-pw {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}
.toggle-pw:hover {
  color: var(--text);
  border-color: var(--blue);
}
.toggle-pw[aria-pressed="true"] {
  color: var(--blue);
  border-color: var(--blue);
}

.error {
  background: rgba(214, 81, 81, 0.12);
  border: 1px solid var(--red);
  color: var(--red);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
}

.submit {
  margin-top: 4px;
  background: var(--accent);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 11px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}
.submit:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--blue);
}
.submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}