/* ============================================================
   ADAMS OMONDI — COMPONENT LIBRARY
   Buttons · Cards · Badges · Forms · Modals · Toasts · Loaders
   ============================================================ */

/* =============== BUTTONS =============== */
.btn {
  --_bg: var(--glass-bg);
  --_fg: var(--text-primary);
  --_border: var(--border-default);
  --_shadow: none;

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  border-radius: var(--radius-full);
  border: 1px solid var(--_border);
  background: var(--_bg);
  color: var(--_fg);
  box-shadow: var(--_shadow);
  cursor: pointer;
  text-decoration: none;
  transition:
    transform var(--dur-base) var(--ease-spring),
    background var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

/* Primary — cyan→violet gradient */
.btn--primary {
  background: var(--gradient-primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(0,212,255,0.22), 0 0 0 0 rgba(0,212,255,0);
}
.btn--primary:hover {
  box-shadow: 0 12px 32px rgba(0,212,255,0.35), 0 0 0 4px rgba(0,212,255,0.12);
  color: #ffffff;
}

/* Secondary — glass */
.btn--secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border-color: var(--border-default);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn--secondary:hover {
  background: var(--glass-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

/* Ghost */
.btn--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}
.btn--ghost:hover { color: var(--text-primary); background: var(--glass-bg); }

/* Outline brand */
.btn--outline {
  background: transparent;
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}
.btn--outline:hover {
  background: var(--brand-primary-soft);
  color: var(--brand-primary-hover);
}

/* Sizes */
.btn--sm { padding: 0.6rem 1.15rem; font-size: 0.85rem; }
.btn--lg { padding: 1.05rem 2rem; font-size: 1rem; }
.btn--xl { padding: 1.2rem 2.4rem; font-size: 1.0625rem; }
.btn--block { width: 100%; }

/* Icon-only */
.btn--icon {
  padding: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
}
.btn--icon svg { width: 20px; height: 20px; }

/* Button with arrow */
.btn__arrow {
  display: inline-block;
  transition: transform var(--dur-base) var(--ease-out);
}
.btn:hover .btn__arrow { transform: translateX(3px); }

/* =============== CARDS =============== */
.card {
  position: relative;
  display: block;
  padding: 1.75rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition:
    transform var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    background var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,212,255,0.35), transparent 45%, rgba(124,58,237,0.30));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-out);
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  background: var(--glass-hover);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.card:hover::before { opacity: 1; }

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--brand-primary-soft);
  border: 1px solid rgba(0,212,255,0.18);
  color: var(--brand-primary);
  margin-bottom: 1.25rem;
}
.card__icon svg { width: 24px; height: 24px; }
.card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}
.card__text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* =============== BADGES =============== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
}
.badge--brand   { background: var(--brand-primary-soft); color: var(--brand-primary); border-color: rgba(0,212,255,0.30); }
.badge--violet  { background: var(--brand-secondary-soft); color: #a78bfa; border-color: rgba(124,58,237,0.30); }
.badge--success { background: rgba(16,185,129,0.14); color: #34d399; border-color: rgba(16,185,129,0.30); }
.badge--warn    { background: rgba(245,158,11,0.14); color: #fbbf24; border-color: rgba(245,158,11,0.30); }
.badge--danger  { background: rgba(239,68,68,0.14);  color: #f87171; border-color: rgba(239,68,68,0.30); }

/* =============== FORMS =============== */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.form-label .req { color: var(--brand-danger); margin-left: 2px; }

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition:
    border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    background var(--dur-base) var(--ease-out);
  outline: none;
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); }

.form-input:hover,
.form-select:hover,
.form-textarea:hover { border-color: var(--border-strong); }

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--brand-primary);
  background: var(--bg-surface);
  box-shadow: 0 0 0 4px var(--brand-primary-soft);
}
.form-textarea { min-height: 130px; resize: vertical; line-height: 1.6; }
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'><path d='M1 1.5L6 6.5L11 1.5' stroke='%23a4adc4' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}
.form-hint { font-size: 0.8125rem; color: var(--text-muted); margin-top: 0.4rem; }
.form-error {
  font-size: 0.8125rem;
  color: var(--brand-danger);
  margin-top: 0.4rem;
  display: none;
}
.form-group.has-error .form-input,
.form-group.has-error .form-textarea,
.form-group.has-error .form-select {
  border-color: var(--brand-danger);
  box-shadow: 0 0 0 4px rgba(239,68,68,0.10);
}
.form-group.has-error .form-error { display: block; }

/* =============== SPINNER / LOADER =============== */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.28);
  border-top-color: #fff;
  animation: spin 0.75s linear infinite;
}
.btn .spinner { margin-right: 4px; }

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

/* =============== MODAL =============== */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal.is-open { display: flex; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn var(--dur-base) var(--ease-out);
}
.modal__panel {
  position: relative;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  animation: modalIn var(--dur-base) var(--ease-spring);
}
.modal__close {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text-muted);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.modal__close:hover { background: var(--glass-hover); color: var(--text-primary); }

@keyframes modalIn {
  from { opacity: 0; transform: translateY(24px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* =============== TOASTS =============== */
.toast-stack {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  pointer-events: none;
  max-width: calc(100vw - 2rem);
}
.toast {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  min-width: 280px;
  max-width: 400px;
  padding: 0.95rem 1.1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: toastIn var(--dur-base) var(--ease-spring);
  font-size: 0.9rem;
}
.toast.is-leaving { animation: toastOut var(--dur-base) var(--ease-out) forwards; }
.toast__icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  margin-top: 1px;
}
.toast--success .toast__icon { background: rgba(16,185,129,0.16); color: #34d399; }
.toast--error   .toast__icon { background: rgba(239,68,68,0.16); color: #f87171; }
.toast--info    .toast__icon { background: rgba(0,212,255,0.16); color: var(--brand-primary); }
.toast--warn    .toast__icon { background: rgba(245,158,11,0.16); color: #fbbf24; }
.toast__body { flex: 1; }
.toast__title { font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
.toast__msg   { font-size: 0.85rem; color: var(--text-secondary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(40px); }
}

/* =============== EMPTY STATE =============== */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}
.empty-state__icon {
  display: inline-flex;
  width: 64px; height: 64px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--border-default);
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

/* =============== FLOATING WHATSAPP =============== */
.whatsapp-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: calc(var(--z-navbar) - 1);
  width: 56px; height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  box-shadow: 0 10px 30px rgba(37,211,102,0.35), 0 0 0 0 rgba(37,211,102,0.4);
  transition: transform var(--dur-base) var(--ease-spring), box-shadow var(--dur-base) var(--ease-out);
  animation: pulseWhatsapp 2.8s infinite;
}
.whatsapp-fab:hover { transform: scale(1.08); color: #fff; }
.whatsapp-fab svg { width: 28px; height: 28px; }

@keyframes pulseWhatsapp {
  0%, 100% { box-shadow: 0 10px 30px rgba(37,211,102,0.35), 0 0 0 0 rgba(37,211,102,0.5); }
  50%      { box-shadow: 0 10px 30px rgba(37,211,102,0.35), 0 0 0 14px rgba(37,211,102,0); }
}

@media (min-width: 900px) {
  .whatsapp-fab { right: 1.75rem; bottom: 1.75rem; width: 60px; height: 60px; }
}