/* ============================================================
   Plant Pulsify — Premium Green Theme CSS
   ============================================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

/* ---- Design Tokens ---- */
:root {
  /* Greens */
  --green-50: #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-300: #86efac;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;
  --green-900: #14532d;
  --green-950: #0a4a2e;

  /* Dark / Base */
  --dark-bg: #050a08;
  --dark-surface: #0a1410;
  --dark-card: #0f1f18;
  --dark-border: #1a3328;

  /* Accent */
  --gold: #f0c040;
  --gold-d: #c49a20;

  /* Text */
  --text-primary: #e8f5e9;
  --text-secondary: #a3c9b0;
  --text-muted: #5e8a6e;

  /* Misc */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(.4, 0, .2, 1);

  /* Glass */
  --glass-bg: rgba(14, 30, 22, 0.55);
  --glass-border: rgba(34, 197, 94, 0.12);
  --glass-blur: 16px;
}

/* ---- Reset ---- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Outfit', sans-serif;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
}

ul {
  list-style: none;
}

/* ---- Utility ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-pad {
  padding: 100px 0;
}

.text-center {
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(34, 197, 94, .1);
  color: var(--green-400);
  border: 1px solid rgba(34, 197, 94, .2);
}

.section-heading {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 14px;
  background: linear-gradient(135deg, var(--green-300), var(--green-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 56px;
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(5, 10, 8, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--dark-border);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.45rem;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 0 20px rgba(34, 197, 94, .25);
}

.logo span {
  color: var(--green-400);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--green-400);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--green-300);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 100px !important;
  background: linear-gradient(135deg, var(--green-600), var(--green-700)) !important;
  color: #fff !important;
  font-weight: 600 !important;
  transition: var(--transition) !important;
  box-shadow: 0 4px 16px rgba(34, 197, 94, .2);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(34, 197, 94, .35);
}

.nav-cta::after {
  display: none !important;
}

/* Mobile menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(22, 163, 74, .18) 0%, transparent 70%),
    radial-gradient(circle at 20% 80%, rgba(34, 197, 94, .08) 0%, transparent 50%),
    radial-gradient(circle at 80% 60%, rgba(74, 222, 128, .06) 0%, transparent 50%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--dark-bg), transparent);
}

/* Floating particles canvas */
#particles-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--green-300), var(--green-500), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 16px 36px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(34, 197, 94, .25);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(34, 197, 94, .4);
}

.btn-outline {
  padding: 16px 36px;
  border-radius: 100px;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  border: 1px solid var(--dark-border);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-outline:hover {
  border-color: var(--green-500);
  color: var(--green-400);
  transform: translateY(-3px);
}

/* Hero stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--green-400);
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---- Features ---- */
.features {
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--green-500), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 197, 94, .25);
  box-shadow: 0 16px 48px rgba(0, 0, 0, .3);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(34, 197, 94, .15), rgba(34, 197, 94, .05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  border: 1px solid rgba(34, 197, 94, .15);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---- Scanner Section ---- */
.scanner-section {
  position: relative;
}

.scanner-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.scanner-left {
  position: relative;
}

.drop-zone {
  border: 2px dashed rgba(34, 197, 94, .3);
  border-radius: var(--radius-lg);
  padding: 60px 36px;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.drop-zone::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  background: conic-gradient(from 0deg, var(--green-500), transparent, var(--green-500));
  animation: borderRotate 4s linear infinite;
  opacity: 0;
  transition: opacity var(--transition);
  z-index: -1;
}

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

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--green-500);
  background: rgba(22, 163, 74, .08);
  transform: scale(1.01);
}

.drop-zone:hover::before,
.drop-zone.drag-over::before {
  opacity: .4;
}

.drop-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
}

.drop-zone h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.drop-zone p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 22px;
}

.drop-zone .or-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.drop-zone .or-divider::before,
.drop-zone .or-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--dark-border);
}

.browse-btn {
  padding: 12px 28px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--green-600), var(--green-700));
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 10;
  cursor: pointer;
}

.browse-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, .3);
}

.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.supported-formats {
  margin-top: 18px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Image preview */
.preview-container {
  display: none;
  margin-top: 24px;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--dark-border);
}

.preview-container.visible {
  display: block;
}

.preview-container img {
  width: 100%;
  max-height: 350px;
  object-fit: cover;
}

.preview-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(to top, rgba(0, 0, 0, .8), transparent);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.preview-name {
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 500;
}

.remove-preview {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(239, 68, 68, .2);
  color: #ef4444;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(239, 68, 68, .3);
  transition: var(--transition);
}

.remove-preview:hover {
  background: rgba(239, 68, 68, .4);
}

/* Analyze button */
.analyze-btn {
  margin-top: 20px;
  width: 100%;
  padding: 18px 28px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  transition: var(--transition);
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 6px 24px rgba(34, 197, 94, .25);
}

.analyze-btn.visible {
  display: flex;
}

.analyze-btn:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 10px 36px rgba(34, 197, 94, .4);
}

.analyze-btn:disabled {
  opacity: .6;
  cursor: not-allowed;
}

/* ---- Results Panel ---- */
.results-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  min-height: 400px;
  display: flex;
  flex-direction: column;
}

.results-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
  gap: 16px;
}

.results-placeholder .placeholder-icon {
  font-size: 3.5rem;
  opacity: .4;
}

.results-placeholder p {
  font-size: 0.95rem;
  max-width: 280px;
}

/* Loading spinner */
.scanner-loading {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 20px;
  text-align: center;
}

.scanner-loading.visible {
  display: flex;
}

.spinner {
  width: 56px;
  height: 56px;
  border: 3px solid var(--dark-border);
  border-top-color: var(--green-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.progress-bar-track {
  width: 100%;
  max-width: 300px;
  height: 6px;
  background: var(--dark-border);
  border-radius: 100px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green-500), var(--green-300));
  border-radius: 100px;
  width: 0%;
  transition: width 0.3s ease;
}

.loading-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Results content */
.results-content {
  display: none;
}

.results-content.visible {
  display: block;
}

.result-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--dark-border);
}

.result-icon {
  font-size: 2.2rem;
}

.result-title h3 {
  font-size: 1.35rem;
  font-weight: 700;
}

.result-title .scientific {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Confidence & Severity */
.result-meters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.meter-card {
  background: rgba(0, 0, 0, .2);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--dark-border);
}

.meter-card .meter-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 8px;
}

.meter-card .meter-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
}

.meter-bar {
  margin-top: 8px;
  height: 5px;
  background: var(--dark-border);
  border-radius: 100px;
  overflow: hidden;
}

.meter-bar-fill {
  height: 100%;
  border-radius: 100px;
  transition: width 1s ease;
}

/* Symptoms */
.result-section {
  margin-bottom: 24px;
}

.result-section h4 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--green-400);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.symptom-list li {
  padding: 8px 0;
  padding-left: 20px;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.92rem;
  border-bottom: 1px solid rgba(255, 255, 255, .03);
}

.symptom-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--green-500);
  font-weight: 700;
}

/* Solutions */
.solution-item {
  background: rgba(0, 0, 0, .15);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 10px;
  display: flex;
  gap: 12px;
  align-items: start;
  transition: var(--transition);
}

.solution-item:hover {
  border-color: rgba(34, 197, 94, .2);
  background: rgba(34, 197, 94, .04);
}

.solution-icon {
  font-size: 1.1rem;
  margin-top: 1px;
}

.solution-body .sol-type {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--green-400);
  margin-bottom: 3px;
}

.solution-body .sol-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Prevention */
.prevention-item {
  display: flex;
  align-items: start;
  gap: 10px;
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.prevention-item .prev-check {
  color: var(--green-500);
  font-weight: 700;
  font-size: 1rem;
  margin-top: 1px;
}

/* ---- Disease Guide Section ---- */
.guide-section {
  position: relative;
}

.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: rgba(34, 197, 94, .2);
}

.accordion-header {
  width: 100%;
  padding: 18px 24px;
  background: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
}

.accordion-header:hover {
  color: var(--green-300);
}

.accordion-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.accordion-arrow {
  font-size: 0.8rem;
  transition: transform var(--transition);
  color: var(--text-muted);
}

.accordion-item.open .accordion-arrow {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-item.open .accordion-body {
  max-height: 600px;
}

.accordion-body-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.accordion-body-inner .acc-plants {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.accordion-body-inner .acc-symptoms {
  margin-top: 10px;
}

.accordion-body-inner .acc-symptoms li {
  padding: 3px 0;
  padding-left: 16px;
  position: relative;
}

.accordion-body-inner .acc-symptoms li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--green-500);
  font-size: 0.8rem;
}

/* Severity badges */
.severity-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.severity-none {
  background: rgba(34, 197, 94, .15);
  color: #22c55e;
}

.severity-low {
  background: rgba(134, 239, 172, .15);
  color: #86efac;
}

.severity-medium {
  background: rgba(250, 204, 21, .15);
  color: #facc15;
}

.severity-high {
  background: rgba(249, 115, 22, .15);
  color: #f97316;
}

.severity-critical {
  background: rgba(239, 68, 68, .15);
  color: #ef4444;
}

/* ---- Scan Tools ---- */
.scan-tools {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.tools-header {
  margin-bottom: 24px;
}

.tools-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.tools-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Scan Mode Tabs */
.scan-modes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.scan-mode {
  background: rgba(0, 0, 0, .2);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.scan-mode:hover {
  border-color: rgba(34, 197, 94, .3);
  background: rgba(34, 197, 94, .05);
  transform: translateY(-2px);
}

.scan-mode.active {
  border-color: var(--green-500);
  background: rgba(34, 197, 94, .1);
  box-shadow: 0 0 20px rgba(34, 197, 94, .15), inset 0 0 16px rgba(34, 197, 94, .05);
}

.mode-icon {
  font-size: 1.5rem;
}

.mode-label {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.mode-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.scan-mode.active .mode-label {
  color: var(--green-400);
}

/* Quick Action Buttons */
.quick-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.quick-btn {
  padding: 10px 20px;
  border-radius: 100px;
  background: rgba(0, 0, 0, .25);
  border: 1px solid var(--dark-border);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.quick-btn:hover {
  border-color: var(--green-500);
  color: var(--green-400);
  background: rgba(34, 197, 94, .06);
  transform: translateY(-1px);
}

.history-count {
  background: var(--green-600);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 100px;
  min-width: 20px;
  text-align: center;
}

/* ---- Image Enhancement Tools ---- */
.enhance-tools {
  display: none;
  margin-top: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.enhance-tools.visible {
  display: block;
}

.enhance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.enhance-reset {
  background: none;
  border: 1px solid var(--dark-border);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: var(--transition);
}

.enhance-reset:hover {
  border-color: var(--green-500);
  color: var(--green-400);
}

.enhance-controls {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 16px;
}

.enhance-slider {
  display: grid;
  grid-template-columns: 100px 1fr 50px;
  align-items: center;
  gap: 12px;
}

.enhance-slider label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.enhance-slider input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  background: var(--dark-border);
  border-radius: 100px;
  outline: none;
}

.enhance-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--green-500);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(34, 197, 94, .4);
  transition: var(--transition);
}

.enhance-slider input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 14px rgba(34, 197, 94, .6);
}

.slider-val {
  font-size: 0.78rem;
  color: var(--green-400);
  font-weight: 600;
  text-align: right;
  font-family: 'Outfit', sans-serif;
}

.enhance-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.enhance-action-btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, .2);
  border: 1px solid var(--dark-border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.enhance-action-btn:hover {
  border-color: var(--green-500);
  color: var(--green-400);
}

/* ---- Color Analysis ---- */
.color-analysis {
  display: none;
  margin-top: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.color-analysis.visible {
  display: block;
}

.color-header {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.color-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.color-bar-item {
  display: grid;
  grid-template-columns: 14px 110px 1fr 40px;
  align-items: center;
  gap: 10px;
}

.color-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: block;
}

.color-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.color-track {
  height: 6px;
  background: var(--dark-border);
  border-radius: 100px;
  overflow: hidden;
}

.color-fill {
  height: 100%;
  border-radius: 100px;
  transition: width 1s ease;
}

.color-pct {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-align: right;
  font-family: 'Outfit', sans-serif;
}

/* ---- Scan Tools ---- */
.scan-tools {
  margin-top: 30px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.tools-header {
  margin-bottom: 20px;
  text-align: center;
}

.tools-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.tools-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.scan-modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.scan-mode {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.scan-mode:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
  border-color: rgba(34, 197, 94, .3);
}

.scan-mode.active {
  background: rgba(34, 197, 94, .1);
  border-color: var(--green-500);
  box-shadow: 0 4px 12px rgba(34, 197, 94, .2);
}

.mode-icon {
  font-size: 1.8rem;
  margin-bottom: 4px;
}

.mode-label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.mode-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* ---- Model Loader UI ---- */
.model-source-toggle {
  display: flex;
  background: var(--dark-bg);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 20px;
}

.source-option {
  flex: 1;
  text-align: center;
  padding: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: var(--transition);
}

.source-option input {
  display: none;
}

.source-option.active {
  background: var(--green-600);
  color: #fff;
  font-weight: 600;
}

.settings-group {
  display: none;
}

.settings-group.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.file-upload-box {
  border: 2px dashed var(--dark-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  margin-bottom: 12px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.file-upload-box:hover {
  border-color: var(--green-500);
  background: rgba(34, 197, 94, .05);
}

.file-upload-box input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 8px;
}

.model-status {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  text-align: center;
}

.class-labels-input {
  width: 100%;
  height: 80px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  color: var(--text-primary);
  font-family: inherit;
  resize: vertical;
}

/* ---- Trainer UI ---- */
.trainer-classes {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 300px;
  overflow-y: auto;
}

.trainer-class-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.class-inputs {
  flex: 1;
  margin-right: 12px;
}

.class-name-input {
  background: none;
  border: none;
  border-bottom: 1px solid var(--dark-border);
  color: var(--text-primary);
  font-size: 0.95rem;
  width: 100%;
  margin-bottom: 4px;
}

.class-count {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.train-btn {
  background: var(--dark-bg);
  border: 1px solid var(--green-500);
  color: var(--green-400);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.train-btn:active {
  background: var(--green-600);
  color: #fff;
}

.train-btn.capturing {
  background: var(--green-600);
  color: #fff;
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }

  100% {
    transform: scale(1);
  }
}

.trainer-status {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
  font-style: italic;
}

/* ---- Camera Modal ---- */
.camera-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, .85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  align-items: center;
  justify-content: center;
}

.camera-modal.visible {
  display: flex;
}

.camera-modal-inner {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 560px;
  width: 90%;
}

.camera-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.camera-modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.camera-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(239, 68, 68, .15);
  color: #ef4444;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(239, 68, 68, .25);
  cursor: pointer;
  transition: var(--transition);
}

.camera-close:hover {
  background: rgba(239, 68, 68, .3);
}

#camera-feed {
  width: 100%;
  border-radius: var(--radius-md);
  background: #000;
  max-height: 360px;
  object-fit: cover;
}

.camera-controls {
  margin-top: 16px;
  text-align: center;
}

.camera-snap-btn {
  padding: 14px 36px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(34, 197, 94, .25);
}

.camera-snap-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(34, 197, 94, .4);
}

/* ---- Scan History ---- */
.scan-history {
  display: none;
  margin-top: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.scan-history.visible {
  display: block;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.history-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.history-clear {
  background: none;
  border: 1px solid rgba(239, 68, 68, .25);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.history-clear:hover {
  border-color: #ef4444;
  color: #ef4444;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
}

.history-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 30px;
  font-size: 0.9rem;
}

.history-empty span {
  font-size: 2rem;
  display: block;
  margin-bottom: 10px;
  opacity: .4;
}

.history-item {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px;
  background: rgba(0, 0, 0, .15);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
}

.history-item:hover {
  border-color: rgba(34, 197, 94, .2);
  background: rgba(34, 197, 94, .04);
}

.history-thumb {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.history-info {
  min-width: 0;
}

.history-disease {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  margin-top: 2px;
}

.history-badge {
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* ---- Responsive additions ---- */
@media (max-width: 768px) {
  .scan-modes {
    grid-template-columns: repeat(2, 1fr);
  }

  .quick-actions {
    flex-direction: column;
  }

  .quick-btn {
    justify-content: center;
  }

  .enhance-slider {
    grid-template-columns: 80px 1fr 40px;
  }

  .color-bar-item {
    grid-template-columns: 12px 80px 1fr 36px;
  }
}

.footer {
  border-top: 1px solid var(--dark-border);
  padding: 48px 0;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
}

.footer-brand span {
  color: var(--green-400);
}

.footer-links {
  display: flex;
  gap: 28px;
  justify-content: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--green-400);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ---- Scroll Animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .scanner-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(5, 10, 8, .95);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--dark-border);
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-stats {
    gap: 28px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .result-meters {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--dark-border);
  border-radius: 100px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--green-900);
}

/* ---- Navbar API Button ---- */
.nav-api-btn {
  background: rgba(34, 197, 94, .1);
  border: 1px solid rgba(34, 197, 94, .25);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-api-btn:hover {
  border-color: var(--green-500);
  color: var(--green-400);
  background: rgba(34, 197, 94, .15);
}

/* ---- API Key Modal ---- */
.api-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, .85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  align-items: center;
  justify-content: center;
}

.api-modal.visible {
  display: flex;
}

.api-modal-inner {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 520px;
  width: 90%;
}

.api-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.api-modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.api-modal-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.api-input-wrap {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.api-key-input {
  flex: 1;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, .3);
  border: 1px solid var(--dark-border);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
  outline: none;
}

.api-key-input:focus {
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, .15);
}

.api-key-input::placeholder {
  color: var(--text-muted);
}

.api-toggle-vis {
  width: 48px;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, .25);
  border: 1px solid var(--dark-border);
  color: var(--text-muted);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.api-toggle-vis:hover {
  border-color: var(--green-500);
}

.api-status {
  font-size: 0.82rem;
  margin-bottom: 18px;
  min-height: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.api-status.success {
  color: var(--green-400);
}

.api-status.error {
  color: #ef4444;
}

.api-status.loading {
  color: var(--text-muted);
}

.api-modal-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---- Auth Modals (On-Demand) ---- */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fadeIn 0.3s ease;
}

.auth-overlay.visible {
  display: flex;
}

.modal-box {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* Re-use auth box text styles */
.auth-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green-400), var(--green-600));
}

.auth-header {
  margin-bottom: 24px;
}

.auth-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 8px 24px rgba(34, 197, 94, .3);
}

.auth-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.auth-header span {
  color: var(--green-400);
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Forms */
.auth-form {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.auth-form.active {
  display: flex;
}

.form-group {
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--dark-border);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--green-500);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15);
}

.auth-btn {
  width: 100%;
  padding: 12px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 8px;
  transition: var(--transition);
}

.auth-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(34, 197, 94, .3);
}

.auth-switch {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--green-400);
  font-weight: 500;
  transition: var(--transition);
}

.auth-switch a:hover {
  color: var(--green-300);
  text-decoration: underline;
}

/* ---- Profile Modal ---- */
.profile-box {
  max-width: 380px;
}

.profile-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-400), var(--green-600));
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(34, 197, 94, .3);
  margin-bottom: 8px;
}

.profile-header h3 {
  font-size: 1.4rem;
  font-weight: 600;
}

.profile-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.join-date {
  display: inline-block;
  margin-top: 4px;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 0.75rem;
  border: 1px solid var(--dark-border);
}

.logout-btn {
  width: 100%;
  justify-content: center;
  border-color: rgba(239, 68, 68, 0.5);
  color: #ef4444;
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #ef4444;
  transform: translateY(-2px);
}

/* ---- Navbar User Area ---- */
.nav-user-area {
  display: flex;
  align-items: center;
}

.nav-login-btn {
  background: transparent;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.92rem;
  padding: 8px 16px;
  border-radius: 100px;
  transition: var(--transition);
}

.nav-login-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--green-400);
}

.nav-profile-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  padding: 6px 16px 6px 6px;
  border-radius: 100px;
  border: 1px solid var(--dark-border);
  transition: var(--transition);
  cursor: pointer;
}

/* ---- Trainer UI (Main) ---- */
.trainer-ui-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  animation: fadeIn 0.4s ease-out;
}

.trainer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.trainer-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.trainer-actions-top {
  display: flex;
  gap: 10px;
}

.trainer-content-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

@media (max-width: 900px) {
  .trainer-content-grid {
    grid-template-columns: 1fr;
  }
}

.trainer-left,
.trainer-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.trainer-camera-box {
  width: 100%;
  aspect-ratio: 4/3;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--dark-border);
  position: relative;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

#trainer-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
  /* Mirror effect */
}

.trainer-instruction {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-size: 0.95rem;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.5;
}

.trainer-instruction b {
  color: var(--green-400);
}

.trainer-classes-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 6px;
}

.dashed-btn {
  border-style: dashed !important;
  opacity: 0.7;
  border-width: 2px;
  justify-content: center;
}

.dashed-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--green-500);
  color: var(--green-400);
}

/* Updated Class Item for Main UI */
.trainer-class-item {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s;
}

.trainer-class-item:hover {
  border-color: rgba(34, 197, 94, 0.3);
  transform: translateY(-2px);
}

.class-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.train-actions {
  display: flex;
  gap: 8px;
  width: 100%;
}

.train-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.camera-train {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--green-400);
}

.camera-train:hover,
.camera-train:active {
  background: var(--green-500);
  color: white;
}

.camera-train.capturing {
  background: var(--green-600);
  color: white;
  animation: pulse 0.8s infinite;
  border-color: var(--green-400);
}

.image-train {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  color: var(--text-secondary);
}

.image-train:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.nav-profile-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--green-500);
}

.nav-avatar-sm {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--green-500);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-user-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.auth-box {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  width: 100%;
  max-width: 440px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.auth-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green-400), var(--green-600));
}

.auth-header {
  margin-bottom: 32px;
}

.auth-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 8px 24px rgba(34, 197, 94, .3);
}

.auth-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-header span {
  color: var(--green-400);
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.auth-form {
  display: none;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 0.4s ease;
}

.auth-form.active {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-group {
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--dark-border);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--green-500);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15);
}

.auth-btn {
  width: 100%;
  padding: 14px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 10px;
  transition: var(--transition);
}

.auth-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(34, 197, 94, .3);
}

.auth-switch {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--green-400);
  font-weight: 500;
  transition: var(--transition);
}

.auth-switch a:hover {
  color: var(--green-300);
  text-decoration: underline;
}