/* =========================================================
   Modern Login UI – Buttons & Credential Fields
   ========================================================= */

:root {
  --fd-green: #215732;
  --fd-green-soft: #e6f1eb;
  --fd-green-ring: rgba(33, 87, 50, 0.18);

  --fd-border: rgba(0, 0, 0, 0.14);
  --fd-border-soft: rgba(0, 0, 0, 0.10);
  --fd-text: #0b0b0b;
  --fd-muted: rgba(0, 0, 0, 0.55);
}

/* Normalize */
*, *::before, *::after {
  box-sizing: border-box;
}

/* ========================
   Buttons
   ======================== */

.btn {
  appearance: none;
  border: 1px solid var(--fd-border);
  background: #ffffff;
  color: var(--fd-green);
  font-weight: 600;
  font-size: 16px;

  padding: 0.8rem 1rem;
  border-radius: 14px;
  width: 100%;

  cursor: pointer;
  transition:
    background-color .18s ease,
    border-color .18s ease,
    box-shadow .18s ease,
    transform .06s ease;
}

.btn:hover {
  background: var(--fd-green-soft);
  border-color: rgba(33, 87, 50, 0.35);
}

.btn:active {
  background: var(--fd-green-soft);
  transform: translateY(1px);
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--fd-green-ring);
}

/* Disabled safety */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========================
   Credential Inputs
   ======================== */

.form-surface input {
  width: 100%;
  font-size: 16px;
  color: var(--fd-text);

  background: #ffffff;
  border: 1px solid var(--fd-border);
  border-radius: 14px;

  padding: 0.75rem 0.9rem 0.75rem 3.1rem;
  transition:
    border-color .18s ease,
    box-shadow .18s ease,
    background-color .18s ease;
}

/* Hover */
.form-surface input:hover {
  border-color: rgba(0, 0, 0, 0.22);
}

/* Focus */
.form-surface input:focus {
  outline: none;
  border-color: rgba(33, 87, 50, 0.55);
  background: #ffffff;
  box-shadow: 0 0 0 4px var(--fd-green-ring);
}

/* Placeholder tone */
.form-surface input::placeholder {
  color: var(--fd-muted);
}

/* ========================
   Input Icon Container
   ======================== */

.input-ico {
  width: 34px;
  height: 34px;
  border-radius: 12px;

  border: 1px solid var(--fd-border-soft);
  color: var(--fd-green);
  background: #ffffff;

  display: grid;
  place-items: center;
  font-size: 16px;
}

/* ========================
   Labels
   ======================== */

.form-surface label {
  display: block;
  margin-bottom: 0.25rem;

  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fd-muted);
}

/* ========================
   Error Message
   ======================== */

.login-alert {
  background: #fdecec;
  border: 1px solid #f2b7b7;
  color: #7d0000;

  padding: 0.6rem 0.8rem;
  border-radius: 12px;
  font-size: 0.9rem;
}

/* ========================
   Small polish
   ======================== */

.form-surface {
  backdrop-filter: saturate(1.05);
}

.form-foot {
  color: var(--fd-muted);
}