/* ============================================================
   PASSADU — Login Screen Styles
   Phase B: Authentication
   ============================================================ */

/* ─── LOGIN SHELL (full-screen overlay before app loads) ─── */
#login-shell {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--canvas);
  z-index: 999;
  transition: background var(--t-med);
  padding: 24px;
}

/* ─── LOGIN CARD ─── */
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-xl);
  padding: 36px 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  box-shadow: 0 4px 24px rgba(20, 20, 19, 0.07);
  transition: background var(--t-med), border-color var(--t-med);
}

/* ─── LOGIN BRAND ─── */
.login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.login-brand-mark {
  color: var(--primary);
  margin-bottom: 4px;
}

.login-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  transition: color var(--t-med);
}

.login-subtitle {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.form-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-family: var(--font-sans);
}

.form-input {
  height: 44px;
  padding: 0 14px;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-md);
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--ink);
  transition: border-color var(--t-fast), background var(--t-med), color var(--t-med);
  outline: none;
  width: 100%;
}

.form-input::placeholder { color: var(--muted-soft); }

.password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-wrapper .form-input {
  padding-right: 40px; /* Space for the eye icon */
}

.password-toggle-btn {
  position: absolute;
  right: 10px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-soft);
  transition: color var(--t-fast);
}

.password-toggle-btn:hover {
  color: var(--ink);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-input.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px var(--error-bg);
}

/* ─── LOGIN BUTTON ─── */
.login-submit-btn {
  height: 48px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--rounded-md);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  transition: background var(--t-fast), opacity var(--t-fast);
  margin-top: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  -webkit-tap-highlight-color: transparent;
}

.login-submit-btn:hover:not(:disabled)  { background: var(--primary-active); }
.login-submit-btn:active:not(:disabled) { transform: scale(0.98); }
.login-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* ─── LOADING SPINNER ─── */
.login-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.login-submit-btn.loading .login-spinner { display: block; }
.login-submit-btn.loading .login-btn-text { display: none; }

/* ─── ERROR MESSAGE ─── */
.login-error-msg {
  display: none;
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(198, 69, 69, 0.2);
  border-radius: var(--rounded-md);
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  line-height: 1.4;
}

.login-error-msg.visible { display: block; }

/* ─── FOOTER ─── */
.login-footer {
  text-align: center;
  font-size: 11.5px;
  color: var(--muted-soft);
  line-height: 1.5;
}

/* ─── DARK MODE ADJUSTMENTS ─── */
[data-theme="dark"] .login-card {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .form-input {
  background: var(--surface-dark-soft);
  border-color: var(--hairline);
  color: var(--on-dark);
}

[data-theme="dark"] .form-input::placeholder {
  color: var(--muted-soft);
}