/* =====================================================
   ELVANTA — Reusable Components
   (buttons, forms, toast, modal, spinner, badges)
   ===================================================== */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  border: 1.5px solid transparent;
  transition: transform var(--speed) var(--ease), box-shadow var(--speed) var(--ease), background var(--speed) var(--ease), color var(--speed) var(--ease);
  white-space: nowrap;
  position: relative;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--gradient-red);
  color: var(--white);
  box-shadow: var(--shadow-red);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 40px rgba(201,0,0,0.28); }

.btn-secondary {
  background: var(--white);
  color: var(--dark);
  border-color: var(--border-soft);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }

.btn-dark {
  background: var(--dark);
  color: var(--white);
}
.btn-dark:hover { background: #000; }

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); }

.btn-block { width: 100%; }

.btn-lg { padding: 1.05rem 2rem; font-size: 1rem; }

.btn[disabled] { opacity: 0.65; pointer-events: none; }

.btn .btn-spinner {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: var(--white);
  animation: btn-spin 0.7s linear infinite;
  display: none;
}

.btn.is-loading .btn-spinner { display: inline-block; }
.btn.is-loading .btn-label { opacity: 0.85; }

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

/* ---------- Forms ---------- */
.form-group { margin-bottom: var(--space-4); }

.form-row {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.45rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-soft);
  font-size: 0.98rem;
  font-family: var(--font-body);
  background: var(--surface);
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(201, 0, 0, 0.1);
}

.form-control.is-invalid { border-color: var(--primary-dark); }

.field-error {
  display: none;
  color: var(--primary-dark);
  font-size: 0.82rem;
  margin-top: 0.4rem;
}

.form-control.is-invalid + .field-error,
.form-group.has-error .field-error { display: block; }

.input-wrap { position: relative; }

.input-wrap .form-control { padding-right: 2.8rem; }

.input-toggle {
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.3rem;
}

.input-toggle:hover { color: var(--primary); }

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--dark);
}

.checkbox-row input[type="checkbox"] {
  width: 18px; height: 18px;
  margin-top: 2px;
  accent-color: var(--primary);
  flex-shrink: 0;
}

.form-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.form-meta-row a { color: var(--primary); font-weight: 600; font-size: 0.9rem; }

/* ---------- Toasts ---------- */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-width: min(340px, calc(100vw - 2rem));
}

.toast {
  background: var(--dark);
  color: var(--white);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 14px 30px rgba(0,0,0,0.22);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  transform: translateX(120%);
  opacity: 0;
  transition: transform var(--speed) var(--ease), opacity var(--speed) var(--ease);
  border-left: 4px solid var(--primary);
}

.toast.is-visible { transform: translateX(0); opacity: 1; }
.toast--success { border-left-color: #2E9E5B; }
.toast--error { border-left-color: var(--primary-bright); }
.toast--info { border-left-color: #3B82C4; }

.toast__icon { flex-shrink: 0; font-weight: 800; }
.toast__close {
  margin-left: auto;
  background: none;
  border: none;
  color: rgba(255,255,255,0.6);
  font-size: 1rem;
  line-height: 1;
  padding: 0 0.2rem;
}
.toast__close:hover { color: var(--white); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(17,17,17,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--speed) var(--ease);
}

.modal-overlay.is-open { opacity: 1; visibility: visible; }

.modal-box {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  max-width: 420px;
  width: 100%;
  transform: translateY(16px) scale(0.98);
  transition: transform var(--speed) var(--ease);
}

.modal-overlay.is-open .modal-box { transform: translateY(0) scale(1); }

.modal-box h3 { font-size: 1.2rem; }
.modal-box .btn { margin-top: var(--space-3); }

/* ---------- Loading Spinner (full-screen) ---------- */
.spinner-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease);
}

.spinner-overlay.is-active { opacity: 1; visibility: visible; }

.spinner-overlay__mark {
  width: 64px; height: 64px;
  border-radius: 18px;
  background: var(--gradient-red);
  display: grid;
  place-items: center;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  position: relative;
}

.spinner-overlay__ring {
  position: absolute;
  inset: -8px;
  border-radius: 22px;
  border: 3px solid var(--border-red);
  border-top-color: var(--primary);
  animation: btn-spin 0.9s linear infinite;
}

.spinner-overlay__text {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 0.02em;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--off-white);
  color: var(--primary);
}