:root {
  --bg: #0f1117;
  --bg-card: #181b24;
  --border: #2a3042;
  --text: #e8eaef;
  --text-muted: #8b93a7;
  --primary: #5b8def;
  --primary-hover: #7aa3f5;
  --success: #3ecf8e;
  --error: #ef5b5b;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'DM Sans', system-ui, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.login-brand__logo {
  height: 44px;
  width: auto;
  min-width: 170px;
  max-width: 220px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.login-brand h1 {
  font-size: 1.15rem;
  line-height: 1.2;
}

.login-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.form-group input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.captcha-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.captcha-image {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #181b24;
}

.btn {
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0.55rem 1rem;
  transition: background 0.15s, opacity 0.15s;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
}

.btn--primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.btn--sm {
  padding: 0.4rem 0.65rem;
  font-size: 1rem;
}

.btn--block {
  width: 100%;
  margin-top: 0.25rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-error {
  color: var(--error);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.login-success {
  color: var(--success);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.login-footer {
  margin-top: 1.15rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.login-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.login-footer a:hover {
  text-decoration: underline;
}

.login-card--wide {
  max-width: 440px;
}

.hidden { display: none; }