/* ============================================================
   PlantGuard Design System — Reusable Components (3D PREMIUM)
   Buttons, cards, forms, badges, navbar, toast, spinner, etc.
   Dimensional depth: layered shadows, gradients, glassmorphism.
   All values reference tokens.css custom properties.
   ============================================================ */

/* ============== NAVBAR (frosted glass, floating) ============== */
.navbar {
  position: sticky;
  top: var(--space-3);
  z-index: var(--z-navbar);
  margin: 0 auto;
  max-width: calc(var(--content-max-width) + 48px);
  width: calc(100% - 32px);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-2xl);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 8px 24px rgba(15, 30, 22, 0.10),
    0 24px 60px rgba(15, 30, 22, 0.08);
  padding: var(--space-2) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.navbar-brand {
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-brand-800);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  letter-spacing: -0.02em;
}

/* 3D leaf badge behind the brand mark */
.brand-badge {
  width: 40px; height: 40px;
  border-radius: 14px;
  background: var(--gradient-icon-tile);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 -3px 6px rgba(10, 36, 23, 0.35),
    0 4px 10px rgba(24, 89, 57, 0.4),
    0 10px 24px rgba(24, 89, 57, 0.22);
  transform: rotate(-4deg);
  transition: transform var(--transition-lift);
}
.navbar-brand:hover .brand-badge { transform: rotate(4deg) scale(1.06); }

.navbar-nav {
  display: flex;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-neutral-700);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.nav-link:hover {
  background: rgba(47, 138, 92, 0.10);
  color: var(--color-brand-700);
  transform: translateY(-1px);
}
.nav-link.active {
  background: var(--gradient-brand-btn);
  color: white;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -2px 0 rgba(10, 36, 23, 0.28),
    0 4px 12px rgba(24, 89, 57, 0.35);
}

/* Mobile nav toggle */
.navbar-toggle {
  display: none;
  border: none;
  background: var(--gradient-icon-tile-light);
  font-size: var(--font-size-lg);
  color: var(--color-brand-700);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ============== BUTTONS (physical 3D press) ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1.5px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), filter var(--transition-fast);
  line-height: 1.2;
  position: relative;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; transform: none; }

.btn-primary {
  background: var(--gradient-brand-btn);
  color: white;
  box-shadow: var(--shadow-btn);
  text-shadow: 0 1px 2px rgba(10, 36, 23, 0.3);
}
.btn-primary:hover:not(:disabled) {
  background: var(--gradient-brand-btn-hover);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -2px 0 rgba(10, 36, 23, 0.28),
    0 6px 14px rgba(24, 89, 57, 0.42),
    0 16px 34px rgba(24, 89, 57, 0.28);
}
.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: var(--shadow-btn-pressed);
}

.btn-secondary {
  background: linear-gradient(180deg, #ffffff 0%, #f1f4f2 100%);
  color: var(--color-brand-700);
  border-color: var(--color-brand-300);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 2px 6px rgba(15, 30, 22, 0.08),
    0 6px 16px rgba(15, 30, 22, 0.06);
}
.btn-secondary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-brand-500);
}
.btn-secondary:active:not(:disabled) { transform: translateY(1px); box-shadow: var(--shadow-inset); }

.btn-danger {
  background: linear-gradient(180deg, #ffffff 0%, #fbebe9 100%);
  color: var(--color-danger);
  border-color: #e8a49e;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 2px 6px rgba(194, 59, 50, 0.12);
}
.btn-danger:hover:not(:disabled) { background: var(--color-danger-bg); transform: translateY(-2px); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(6px);
  color: var(--color-neutral-700);
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover:not(:disabled) {
  background: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-brand-700);
}
.btn-ghost.active {
  background: var(--gradient-icon-tile-light);
  color: var(--color-brand-700);
  border-color: var(--color-brand-300);
  box-shadow: var(--shadow-inset);
}

.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--font-size-xs); border-radius: var(--radius-md); }
.btn-block { width: 100%; }
.btn-icon {
  padding: var(--space-2);
  border-radius: var(--radius-full);
  width: 44px; height: 44px;
}

/* ============== CARDS (layered depth + sheen) ============== */
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-lift), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card-sheen);
  pointer-events: none;
}
.card-interactive { cursor: pointer; }
.card-interactive:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  outline-color: var(--color-brand-300);
}
.card-interactive:active { transform: translateY(-1px); }

.dash-card {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.dash-card .dash-card-icon {
  width: 52px; height: 52px;
  border-radius: 16px;
  background: var(--gradient-icon-tile);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--font-size-lg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 -3px 6px rgba(10, 36, 23, 0.3),
    0 6px 14px rgba(24, 89, 57, 0.35),
    0 12px 28px rgba(24, 89, 57, 0.18);
  transition: transform var(--transition-lift);
}
.dash-card:hover .dash-card-icon { transform: scale(1.08) rotate(-4deg); }
.dash-card h4 { font-size: var(--font-size-md); margin: 0; color: var(--color-neutral-900); position: relative; }
.dash-card p { font-size: var(--font-size-sm); color: var(--color-neutral-500); margin: 0; position: relative; }
.dash-card.priority-primary {
  outline-color: var(--color-brand-400);
  background: linear-gradient(180deg, #f0f9f4 0%, #dbf0e3 100%);
}

/* ============== FORMS (carved inset inputs) ============== */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs);
  color: var(--color-neutral-700);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.form-hint { font-size: var(--font-size-xs); color: var(--color-neutral-500); margin-top: var(--space-1); }
.form-error { font-size: var(--font-size-xs); color: var(--color-danger); margin-top: var(--space-1); }

input[type="text"], input[type="email"], input[type="search"], input[type="date"], textarea, select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--surface-card-border);
  font-size: var(--font-size-base);
  background: linear-gradient(180deg, #f8faf9 0%, #ffffff 100%);
  color: var(--color-neutral-900);
  box-shadow: var(--shadow-inset);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input::placeholder, textarea::placeholder { color: var(--color-neutral-400); }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-brand-500);
  box-shadow: var(--shadow-focus), var(--shadow-inset);
  background: white;
}

.checkbox-row { display: flex; align-items: center; gap: var(--space-2); }

/* ============== BADGES (dimensional pills) ============== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    0 2px 6px rgba(15, 30, 22, 0.10);
  border: 1px solid rgba(255,255,255,0.6);
  letter-spacing: 0.02em;
}
.badge-severity-none { background: linear-gradient(180deg, #f1f4f2, #e3e8e5); color: var(--color-neutral-600); }
.badge-severity-low { background: linear-gradient(180deg, #e9f7ef, #cdeeda); color: #1f8a4c; }
.badge-severity-moderate { background: linear-gradient(180deg, #fdf3e2, #fbe6c4); color: #b9770e; }
.badge-severity-high { background: linear-gradient(180deg, #fbe6d9, #f6cfae); color: #c2601f; }
.badge-severity-critical { background: linear-gradient(180deg, #fbebe9, #f6c9c4); color: #c23b32; }

.badge-confidence-high { background: linear-gradient(180deg, #e9f7ef, #cdeeda); color: #1f8a4c; }
.badge-confidence-medium { background: linear-gradient(180deg, #fdf3e2, #fbe6c4); color: #b9770e; }
.badge-confidence-low { background: linear-gradient(180deg, #fbebe9, #f6c9c4); color: #c23b32; }

.badge-source-verified { background: linear-gradient(180deg, #eaf2fb, #cfe2f5); color: #2464b0; }
.badge-source-ai { background: linear-gradient(180deg, #f1f4f2, #e3e8e5); color: var(--color-neutral-600); }

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: linear-gradient(180deg, #f0f9f4, #dbf0e3);
  color: var(--color-brand-700);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 1px 3px rgba(24,89,57,0.12);
  border: 1px solid var(--color-brand-200);
}

/* ============== INFO BLOCKS (glass) ============== */
.info-block {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.info-block h5 {
  color: var(--color-brand-700);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-2) 0;
  display: flex; align-items: center; gap: var(--space-2);
}
.info-block ul { padding-left: 1.2em; margin: 0; }
.info-block li { font-size: var(--font-size-sm); color: var(--color-neutral-700); margin-bottom: var(--space-1); }

/* ============== ALERT / CALLOUT BANNERS (dimensional) ============== */
.callout {
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  border: 1px solid;
  border-left-width: 5px;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(6px);
}
.callout i { margin-top: 2px; font-size: var(--font-size-md); }
.callout-success { background: linear-gradient(180deg, rgba(233,247,239,0.95), rgba(205,238,218,0.9)); border-color: var(--color-success); color: var(--color-brand-800); }
.callout-warning { background: linear-gradient(180deg, rgba(253,243,226,0.95), rgba(251,230,196,0.9)); border-color: var(--color-warning); color: var(--color-neutral-800); }
.callout-danger { background: linear-gradient(180deg, rgba(251,235,233,0.95), rgba(246,201,196,0.9)); border-color: var(--color-danger); color: var(--color-neutral-800); }
.callout-info { background: linear-gradient(180deg, rgba(234,242,251,0.95), rgba(207,226,245,0.9)); border-color: var(--color-info); color: var(--color-neutral-800); }

/* ============== PROGRESS / CONFIDENCE BAR (3D fill) ============== */
.progress-outer {
  background: linear-gradient(180deg, #dbe2de, #eef2ef);
  border-radius: var(--radius-full);
  height: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-inset);
  border: 1px solid rgba(15,30,22,0.06);
}
.progress-inner {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  box-shadow: inset 0 2px 3px rgba(255,255,255,0.45), inset 0 -2px 3px rgba(0,0,0,0.12);
}
.progress-inner.confidence-high { background: linear-gradient(180deg, #34b06a, #1f8a4c); }
.progress-inner.confidence-medium { background: linear-gradient(180deg, #d99a2b, #b9770e); }
.progress-inner.confidence-low { background: linear-gradient(180deg, #d9534a, #c23b32); }

/* ============== SPINNER / LOADING ============== */
.spinner {
  border: 4px solid rgba(47, 138, 92, 0.18);
  border-top-color: var(--color-brand-500);
  border-radius: 50%;
  width: 36px; height: 36px;
  animation: pg-spin 0.75s linear infinite;
  margin: 0 auto;
  box-shadow: 0 4px 14px rgba(24, 89, 57, 0.18);
}
@keyframes pg-spin { 100% { transform: rotate(360deg); } }

.processing-stages {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 320px;
  margin: var(--space-4) auto 0;
  text-align: left;
}
.processing-stage {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-neutral-400);
}
.processing-stage.done { color: var(--color-success); }
.processing-stage.active { color: var(--color-brand-700); font-weight: var(--font-weight-semibold); }
.processing-stage i { width: 16px; text-align: center; }

/* ============== EMPTY STATE ============== */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--color-neutral-500);
  background: rgba(255,255,255,0.5);
  border: 1.5px dashed var(--color-neutral-300);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(4px);
}
.empty-state i { font-size: 2.4rem; color: var(--color-brand-300); margin-bottom: var(--space-3); display: block; filter: drop-shadow(0 4px 8px rgba(24,89,57,0.2)); }

/* ============== TOAST (glass, floating) ============== */
.toast {
  position: fixed;
  top: calc(var(--space-5) + 76px);
  right: var(--space-5);
  background: rgba(20, 67, 44, 0.92);
  backdrop-filter: blur(12px);
  color: white;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  animation: pg-toast-in var(--transition-base);
  max-width: 320px;
}
.toast.error { background: rgba(194, 59, 50, 0.94); }
@keyframes pg-toast-in { from { opacity: 0; transform: translateY(-12px) scale(0.96); } to { opacity: 1; transform: translateY(0) scale(1); } }

/* ============== MODAL ============== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10, 36, 23, 0.55);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  z-index: var(--z-modal);
  padding: var(--space-4);
  animation: pg-fade-in 180ms ease;
}
.modal-box {
  background: linear-gradient(180deg, #ffffff 0%, #f8faf9 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255,255,255,0.8);
  animation: pg-pop-in 240ms cubic-bezier(0.22, 0.9, 0.3, 1.15);
}
@keyframes pg-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pg-pop-in { from { opacity: 0; transform: translateY(16px) scale(0.96); } to { opacity: 1; transform: none; } }

/* ============== FEEDBACK BUTTONS ============== */
.feedback-row { display: flex; align-items: center; gap: var(--space-2); }
.feedback-btn {
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--surface-card-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-neutral-600);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}
.feedback-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.feedback-btn.selected-up { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }
.feedback-btn.selected-down { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger); }

/* ============== PAGINATION ============== */
.pagination { display: flex; align-items: center; justify-content: center; gap: var(--space-2); margin-top: var(--space-6); }
.pagination .page-info { font-size: var(--font-size-sm); color: var(--color-neutral-500); padding: 0 var(--space-2); }

/* ============== SKELETON (loading placeholder) ============== */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.5) 25%, rgba(219,228,222,0.9) 37%, rgba(255,255,255,0.5) 63%);
  background-size: 400% 100%;
  animation: pg-skeleton 1.4s ease infinite;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-inset);
}
@keyframes pg-skeleton { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }