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

html, body {
  min-height: 100%;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

/* ── GRID BACKGROUND ── */
.grid-bg {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* ── LOGIN CARD ── */
.login-wrap {
  width: 100%;
  max-width: 380px;
}

.login-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* ── CARD TOP: brand + lang ── */
.login-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.login-brand-mark {
  width: 26px;
  height: 26px;
  background: var(--fg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.login-brand-mark span {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--bg);
  letter-spacing: -0.02em;
}

.login-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.login-brand-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--fg);
}

.login-brand-loc {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-faint);
}

/* Controls group: lang + theme */
.login-card-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Lang toggle (reuses layout.css pattern) */
.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 9px;
  color: var(--fg-muted);
  text-decoration: none;
  transition: background 0.12s, color 0.12s;
  line-height: 1;
}

.lang-btn:hover  { background: var(--bg-sunken); color: var(--fg); }
.lang-btn.active { background: var(--fg); color: var(--bg); }

/* Theme toggle button */
.theme-toggle-btn {
  width: 30px; height: 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--fg-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.12s, color 0.12s;
  flex-shrink: 0;
}
.theme-toggle-btn:hover { background: var(--bg-sunken); color: var(--fg); }
.icon { width: 16px; height: 16px; display: inline-block; vertical-align: middle; }

/* ── CARD BODY ── */
.login-card-body {
  padding: 28px 24px 24px;
}

.login-heading {
  margin-bottom: 24px;
}

.login-heading h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
  line-height: 1.2;
  margin-bottom: 4px;
}

.login-heading p {
  font-size: 13px;
  color: var(--fg-muted);
}

/* ── FORM ── */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.login-field label {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-muted);
}

.login-field input {
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color 0.12s, box-shadow 0.12s;
  width: 100%;
}

.login-field input::placeholder { color: var(--fg-faint); }

.login-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--bg-elev);
}

/* ── ERROR ── */
.login-error {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 12px;
  background: var(--err-soft);
  border: 1px solid var(--err);
  border-radius: var(--radius);
  color: var(--err);
  font-size: 12.5px;
  font-weight: 500;
}

/* ── SUBMIT BUTTON ── */
.login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 40px;
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s, transform 0.1s;
  margin-top: 4px;
}

.login-btn:hover  { background: var(--accent-hover); }
.login-btn:active { transform: scale(0.99); }

/* ── CARD FOOTER ── */
.login-card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--fg-faint);
  text-align: center;
  font-family: var(--font-mono);
}

/* ── MOBILE ── */
@media (max-width: 480px) {
  .grid-bg {
    padding: 16px;
    align-items: center;
    min-height: 100dvh;
  }
  .login-wrap { max-width: 100%; }
  .login-card { border-radius: var(--radius-lg); }
  .login-card-body { padding: 24px 20px 20px; }
}