/* ============================================
   PLANT FINDR — Premium Design System
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;500;600;700&family=Noto+Naskh+Arabic:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;700&family=Noto+Sans+Devanagari:wght@400;500;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Primary Palette — Botanical Greens */
  --color-primary: #4A7C59;
  --color-primary-light: #7CB342;
  --color-primary-lighter: #AED581;
  --color-primary-dark: #2E5339;
  --color-primary-bg: #E8F5E9;

  /* Accent — Premium Gold */
  --color-accent: #D4AF37;
  --color-accent-light: #F0DFA0;
  --color-accent-dark: #B8972E;

  /* Neutrals — Warm Creams & Ivories */
  --color-bg: #FAFAF5;
  --color-bg-warm: #FFF8E7;
  --color-bg-card: rgba(255, 255, 255, 0.75);
  --color-bg-glass: rgba(255, 255, 255, 0.55);
  --color-surface: #FFFFFF;
  --color-border: rgba(74, 124, 89, 0.12);
  --color-border-hover: rgba(74, 124, 89, 0.25);

  /* Text */
  --color-text: #1A2E22;
  --color-text-secondary: #4A6B55;
  --color-text-muted: #7A9A87;
  --color-text-inverse: #FFFFFF;

  /* Status */
  --color-success: #43A047;
  --color-warning: #FB8C00;
  --color-error: #E53935;
  --color-info: #1E88E5;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-arabic: 'Noto Naskh Arabic', serif;
  --font-chinese: 'Noto Sans SC', sans-serif;
  --font-devanagari: 'Noto Sans Devanagari', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 30px rgba(74, 124, 89, 0.15);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

/* RTL Support */
[dir="rtl"] body {
  direction: rtl;
  text-align: right;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

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

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

ul, ol {
  list-style: none;
}

/* ---------- Utility Classes ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

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

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes growPlant {
  0% { height: 0; opacity: 0; }
  50% { opacity: 1; }
  100% { height: 60px; opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes confidenceFill {
  from { width: 0; }
}

@keyframes ringFill {
  from { stroke-dashoffset: 283; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.navbar__logo:hover {
  transform: scale(1.02);
}

.navbar__logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.navbar__logo-text span {
  color: var(--color-accent-dark);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--transition-base);
}

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

.navbar__link:hover::after {
  width: 60%;
}

/* Language Selector */
.lang-selector {
  position: relative;
}

.lang-selector__btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.lang-selector__btn:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.lang-selector__btn svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.lang-selector.open .lang-selector__btn svg {
  transform: rotate(180deg);
}

.lang-selector__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 100;
  overflow: hidden;
}

[dir="rtl"] .lang-selector__dropdown {
  right: auto;
  left: 0;
}

.lang-selector.open .lang-selector__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-selector__option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

[dir="rtl"] .lang-selector__option {
  text-align: right;
}

.lang-selector__option:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.lang-selector__option.active {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-weight: 600;
}

/* Mobile Menu */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.navbar__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ---------- Hero / Tool Section ---------- */
.hero {
  min-height: 100vh;
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-4xl);
  background: linear-gradient(165deg, var(--color-bg) 0%, var(--color-bg-warm) 40%, var(--color-primary-bg) 100%);
  position: relative;
  overflow: visible;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(174, 213, 129, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  text-align: center;
  margin-bottom: var(--space-3xl);
  animation: fadeInUp 0.8s ease;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(10px);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: italic;
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-text-secondary);
  max-width: 550px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- Tool Card ---------- */
.tool-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease 0.2s both;
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(232, 245, 233, 0.3) 0%, rgba(255, 248, 231, 0.3) 100%);
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--color-primary-light);
  background: linear-gradient(135deg, rgba(232, 245, 233, 0.6) 0%, rgba(255, 248, 231, 0.6) 100%);
  transform: scale(1.01);
  box-shadow: var(--shadow-glow);
}

.upload-area.drag-over {
  border-color: var(--color-primary);
  border-style: solid;
}

.upload-area__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  border-radius: 50%;
  color: var(--color-primary);
  font-size: 2rem;
  transition: transform var(--transition-spring);
}

.upload-area:hover .upload-area__icon {
  transform: scale(1.1);
  animation: float 3s ease-in-out infinite;
}

.upload-area__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.upload-area__subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.upload-area__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(74, 124, 89, 0.3);
}

.upload-area__btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(74, 124, 89, 0.4);
}

.upload-area__camera-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.85rem;
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-full);
  margin-left: var(--space-sm);
  transition: all var(--transition-fast);
}

[dir="rtl"] .upload-area__camera-btn {
  margin-left: 0;
  margin-right: var(--space-sm);
}

.upload-area__camera-btn:hover {
  background: var(--color-primary-bg);
}

.upload-area__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Organ Selector */
.organ-selector {
  margin-top: var(--space-xl);
  text-align: center;
}

.organ-selector__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  display: block;
}

.organ-selector__options {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.organ-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface);
  transition: all var(--transition-fast);
  min-width: 72px;
}

.organ-btn__icon {
  font-size: 1.4rem;
}

.organ-btn:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.organ-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Image Preview */
.image-preview {
  display: none;
  margin-top: var(--space-xl);
  text-align: center;
}

.image-preview.visible {
  display: block;
  animation: fadeInUp 0.5s ease;
}

.image-preview__frame {
  position: relative;
  display: inline-block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-surface);
  max-width: 400px;
  width: 100%;
}

.image-preview__img {
  width: 100%;
  max-height: 350px;
  object-fit: cover;
}

.image-preview__remove {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.image-preview__remove:hover {
  background: var(--color-error);
  transform: scale(1.1);
}

/* Identify Button */
.identify-btn {
  display: none;
  width: 100%;
  margin-top: var(--space-xl);
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  box-shadow: 0 4px 20px rgba(74, 124, 89, 0.3);
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
}

.identify-btn.visible {
  display: block;
  animation: fadeInUp 0.4s ease;
}

.identify-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(74, 124, 89, 0.4);
}

.identify-btn:active:not(:disabled) {
  transform: translateY(0);
}

.identify-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Loading State */
.loading-state {
  display: none;
  text-align: center;
  padding: var(--space-3xl) 0;
}

.loading-state.visible {
  display: block;
  animation: fadeIn 0.3s ease;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  margin: 0 auto var(--space-lg);
  position: relative;
}

.loading-spinner__circle {
  width: 100%;
  height: 100%;
  border: 3px solid var(--color-primary-bg);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-spinner__leaf {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.3rem;
}

.loading-state__text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.loading-state__subtext {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ---------- Results Section ---------- */
.results-section {
  display: none;
  margin-top: var(--space-2xl);
  scroll-margin-top: calc(var(--nav-height) + var(--space-lg));
}

.results-section.visible {
  display: block;
  animation: fadeInUp 0.6s ease;
}

.results-section__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.results-section__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* Top Result */
.result-top {
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, rgba(255, 248, 231, 0.5) 100%);
  border: 1px solid rgba(74, 124, 89, 0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  display: flex;
  gap: var(--space-xl);
  align-items: center;
  position: relative;
  overflow: hidden;
}

.result-top::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(174, 213, 129, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.result-top__confidence {
  flex-shrink: 0;
  text-align: center;
}

.confidence-ring {
  width: 100px;
  height: 100px;
  position: relative;
}

.confidence-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.confidence-ring__bg {
  fill: none;
  stroke: rgba(74, 124, 89, 0.1);
  stroke-width: 6;
}

.confidence-ring__fill {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 283;
  animation: ringFill 1.2s ease forwards;
}

.confidence-ring__text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.confidence-ring__label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-top__info {
  flex: 1;
  min-width: 0;
}

.result-top__scientific {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.result-top__common {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.result-top__family {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 2px var(--space-sm);
  background: rgba(74, 124, 89, 0.1);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.result-top__images {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  overflow-x: auto;
  padding-bottom: var(--space-sm);
}

.result-top__images img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
  cursor: pointer;
}

.result-top__images img:hover {
  transform: scale(1.1);
}

.result-top__actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.result-action-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.result-action-btn--google {
  background: var(--color-surface);
  color: var(--color-info);
  border: 1px solid rgba(30, 136, 229, 0.2);
}

.result-action-btn--google:hover {
  background: rgba(30, 136, 229, 0.05);
  border-color: var(--color-info);
}

.result-action-btn--wiki {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.result-action-btn--wiki:hover {
  background: var(--color-primary-bg);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Other Results */
.results-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.result-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.result-card__confidence {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 55px;
  text-align: center;
}

.result-card__images {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.result-card__images img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.result-card__info {
  flex: 1;
  min-width: 0;
}

.result-card__scientific {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 2px;
}

.result-card__common {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-card__actions {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

/* No Results */
.no-results {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
}

.no-results__icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.no-results__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.no-results__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 400px;
  margin: 0 auto;
}

/* ---------- Plant Summary (Wikipedia) ---------- */
.plant-summary {
  margin-top: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  animation: fadeInUp 0.5s ease 0.3s both;
}

.plant-summary__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.plant-summary__title::before {
  content: '📋';
}

.plant-summary__body {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.plant-summary__thumb {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.plant-summary__text {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
}

.plant-summary__link {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.plant-summary__link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Shimmer Loading for Summary */
.plant-summary__loading {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.plant-summary__shimmer {
  height: 14px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-border) 25%, rgba(255,255,255,0.5) 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: shimmer 1.5s infinite;
}

.plant-summary__shimmer--short {
  width: 60%;
}

.plant-summary__shimmer--medium {
  width: 80%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- Back to Top Button ---------- */
.back-to-top-btn {
  display: block;
  width: 100%;
  margin-top: var(--space-2xl);
  padding: var(--space-md);
  background: var(--color-surface);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.back-to-top-btn:hover {
  background: var(--color-primary-bg);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Scroll margin for the hero/tool section */
.hero {
  scroll-margin-top: 0;
}


/* Error State */
.error-state {
  display: none;
  text-align: center;
  padding: var(--space-2xl);
  background: rgba(229, 57, 53, 0.05);
  border: 1px solid rgba(229, 57, 53, 0.15);
  border-radius: var(--radius-lg);
  margin-top: var(--space-xl);
}

.error-state.visible {
  display: block;
  animation: fadeInUp 0.4s ease;
}

.error-state__icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.error-state__text {
  font-size: 0.95rem;
  color: var(--color-error);
  font-weight: 500;
}

.error-state__retry {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-error);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.error-state__retry:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ================================================================
   CONTENT SECTIONS (Homepage SEO Content)
   ================================================================ */

.content-section {
  padding: var(--space-4xl) 0;
  background: var(--color-bg);
}

.content-section--alt {
  background: var(--color-surface);
}

.content-section__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.content-section__split--reverse {
  direction: rtl;
}

.content-section__split--reverse > * {
  direction: ltr;
}

.content-section__text p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.content-section__text p:last-child {
  margin-bottom: 0;
}

/* --- Interactive Diagram Shared --- */
.interactive-diagram {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.diagram-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Flow Diagram (Photo ID Process) --- */
.diagram-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.diagram-flow__step {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  transition: all 0.5s ease;
  flex: 1;
  min-width: 120px;
  max-width: 180px;
}

.diagram-flow__step.active {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.diagram-flow__icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.diagram-flow__label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.diagram-flow__detail {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.diagram-flow__arrow {
  font-size: 1.5rem;
  color: var(--color-primary-light);
  font-weight: 700;
}

/* --- AI Analysis Bars --- */
.ai-analysis-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.analysis-bar {
  display: grid;
  grid-template-columns: 160px 1fr 45px;
  align-items: center;
  gap: var(--space-sm);
}

.analysis-bar__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.analysis-bar__track {
  height: 10px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.analysis-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1.5s ease;
}

.analysis-bar__value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: right;
}

/* --- Comparison Table --- */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9rem;
}

.comparison-table th {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  text-align: left;
}

.comparison-table th:first-child {
  border-radius: var(--radius-md) 0 0 0;
}

.comparison-table th:last-child {
  border-radius: 0 var(--radius-md) 0 0;
}

.comparison-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.comparison-table td.highlight {
  color: var(--color-primary);
  font-weight: 600;
}

.comparison-table tr:last-child td:first-child {
  border-radius: 0 0 0 var(--radius-md);
}

.comparison-table tr:last-child td:last-child {
  border-radius: 0 0 var(--radius-md) 0;
}

/* --- Device Grid --- */
.device-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.device-card {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: all var(--transition-fast);
  cursor: default;
}

.device-card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.device-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.device-card__name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.device-card__status {
  font-size: 0.8rem;
  color: var(--color-success);
  font-weight: 500;
}

.device-card.pulse {
  animation: pulse 0.5s ease;
}

/* --- Ecology Wheel --- */
.ecology-wheel {
  position: relative;
  width: 280px;
  height: 280px;
  margin: 0 auto;
}

.ecology-wheel__center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-primary-bg);
  border: 2px solid var(--color-primary-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  z-index: 2;
}

.ecology-wheel__center span {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
}

.ecology-wheel__orbit {
  position: absolute;
  width: 100%;
  height: 100%;
}

.ecology-node {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 70px;
  height: 70px;
  margin: -35px 0 0 -35px;
  transform: rotate(var(--angle)) translateX(120px) rotate(calc(-1 * var(--angle)));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  transition: all 0.5s ease;
  cursor: default;
}

.ecology-node.active {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
  transform: rotate(var(--angle)) translateX(120px) rotate(calc(-1 * var(--angle))) scale(1.15);
  box-shadow: var(--shadow-glow);
}

.ecology-node__icon {
  font-size: 1.2rem;
}

.ecology-node__label {
  font-size: 0.5rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  line-height: 1.1;
  margin-top: 2px;
}

/* --- Plant Parts Explorer --- */
.plant-parts-explorer {
  max-width: 900px;
  margin: 0 auto;
}

.plant-parts-explorer__tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.plant-part-tab {
  padding: var(--space-sm) var(--space-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-card);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.plant-part-tab:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.plant-part-tab.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.plant-part-panel {
  display: none;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  animation: fadeInUp 0.4s ease;
}

.plant-part-panel.active {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: var(--space-2xl);
  align-items: center;
}

.plant-part-panel__info h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.plant-part-panel__info p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.plant-part-panel__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag {
  padding: 3px 10px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}

.plant-part-panel__accuracy {
  text-align: center;
}

.accuracy-ring {
  width: 120px;
  height: 120px;
  position: relative;
  margin: 0 auto;
}

.accuracy-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.accuracy-ring__bg {
  fill: none;
  stroke: var(--color-primary-bg);
  stroke-width: 8;
}

.accuracy-ring__fill {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 339.29;
  stroke-dashoffset: calc(339.29 * (1 - var(--pct) / 100));
  transition: stroke-dashoffset 1s ease;
}

.accuracy-ring__text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.accuracy-ring__label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* --- Audience Grid --- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-xl);
}

.audience-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.audience-card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.audience-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  border-radius: 50%;
  margin: 0 auto var(--space-md);
}

.audience-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.audience-card__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- FAQ Accordion --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary-light);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}

.faq-item__question h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.faq-item__toggle {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 30px;
  text-align: center;
  transition: transform var(--transition-fast);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 var(--space-xl);
}

.faq-item.open .faq-item__answer {
  max-height: 400px;
  padding: 0 var(--space-xl) var(--space-lg);
}

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

/* --- Responsive Content Sections --- */
@media (max-width: 768px) {
  .content-section__split {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .content-section__split--reverse {
    direction: ltr;
  }

  .plant-part-panel.active {
    grid-template-columns: 1fr;
  }

  .plant-part-panel__accuracy {
    margin-top: var(--space-md);
  }

  .analysis-bar {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .analysis-bar__value {
    text-align: left;
  }

  .diagram-flow {
    flex-direction: column;
  }

  .diagram-flow__arrow {
    transform: rotate(90deg);
  }

  .ecology-wheel {
    width: 240px;
    height: 240px;
  }

  .ecology-node {
    width: 55px;
    height: 55px;
    margin: -27px 0 0 -27px;
    transform: rotate(var(--angle)) translateX(95px) rotate(calc(-1 * var(--angle)));
  }

  .ecology-node.active {
    transform: rotate(var(--angle)) translateX(95px) rotate(calc(-1 * var(--angle))) scale(1.15);
  }

  .ecology-node__label {
    display: none;
  }
}

/* ---------- How It Works Section (legacy) ---------- */
.how-it-works {
  padding: var(--space-4xl) 0;
  background: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-overline {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 45px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary-lighter), var(--color-primary-lighter), transparent);
  z-index: 0;
}

.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-card__number {
  width: 90px;
  height: 90px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-bg-warm) 100%);
  border-radius: 50%;
  border: 3px solid var(--color-surface);
  box-shadow: var(--shadow-md);
  font-size: 2rem;
  transition: transform var(--transition-spring);
}

.step-card:hover .step-card__number {
  transform: scale(1.1) rotate(-5deg);
}

.step-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.step-card__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- Features Section ---------- */
.features {
  padding: var(--space-4xl) 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-warm) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.feature-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  font-size: 1.6rem;
  transition: transform var(--transition-spring);
}

.feature-card:hover .feature-card__icon {
  transform: scale(1.15);
}

.feature-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.feature-card__text {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- Stats Section ---------- */
.stats {
  padding: var(--space-3xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item {
  padding: var(--space-lg);
}

.stat-item__number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-item__label {
  font-size: 0.95rem;
  opacity: 0.85;
  font-weight: 400;
}

/* ---------- About Section ---------- */
.about {
  padding: var(--space-4xl) 0;
  background: var(--color-surface);
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about__image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about__text-content {
  padding: var(--space-xl) 0;
}

.about__text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.about__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(74, 124, 89, 0.3);
}

.about__cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(74, 124, 89, 0.4);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  font-family: var(--font-display);
}

.footer__logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer__logo span {
  color: var(--color-accent-light);
}

.footer__desc {
  font-size: 0.88rem;
  line-height: 1.7;
  opacity: 0.7;
  max-width: 300px;
}

.footer__title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: 0.88rem;
  opacity: 0.6;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer__link:hover {
  opacity: 1;
  color: var(--color-primary-lighter);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  opacity: 0.5;
}

/* ---------- Responsive Design ---------- */
@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .navbar__links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease;
  }

  .navbar__links.open {
    display: flex;
  }

  .navbar__toggle {
    display: flex;
  }

  .hero {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
  }

  .hero__title {
    font-size: 2rem;
  }

  .tool-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
  }

  .upload-area {
    padding: var(--space-2xl) var(--space-md);
  }

  .upload-area__buttons {
    flex-direction: column;
  }

  .upload-area__camera-btn {
    margin-left: 0;
  }

  .result-top {
    flex-direction: column;
    text-align: center;
  }

  .result-card {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }

  .result-card__info {
    width: 100%;
  }

  .result-card__common {
    white-space: normal;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .steps-grid::before {
    display: none;
  }

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

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

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

  .about__image {
    order: -1;
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .organ-selector__options {
    gap: var(--space-xs);
  }

  .organ-btn {
    min-width: 60px;
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.7rem;
  }
}

/* ---------- Image Lightbox ---------- */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

.lightbox.visible {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background var(--transition-fast);
  border: none;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ================================================================
   PLANT TYPES PAGE
   ================================================================ */

/* Plant Types Hero */
.pt-hero {
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  background: linear-gradient(165deg, var(--color-bg) 0%, var(--color-bg-warm) 40%, var(--color-primary-bg) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pt-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(174, 213, 129, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.pt-hero__content {
  animation: fadeInUp 0.8s ease;
}

/* Category Cards Grid */
.pt-categories {
  padding: var(--space-3xl) 0;
  background: var(--color-bg);
}

.pt-categories__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.pt-category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.pt-category-card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pt-category-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  border-radius: 50%;
  transition: transform var(--transition-spring);
}

.pt-category-card:hover .pt-category-card__icon {
  transform: scale(1.1) rotate(-5deg);
}

.pt-category-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.pt-category-card__count {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* A-Z Section */
.pt-az {
  padding: var(--space-3xl) 0 var(--space-4xl);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-warm) 100%);
}

/* Name Toggle */
.pt-az__toggle {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 4px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.pt-az__toggle-btn {
  padding: var(--space-sm) var(--space-xl);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pt-az__toggle-btn.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(74, 124, 89, 0.3);
}

/* Alpha Bar */
.pt-az__alpha-bar {
  display: flex;
  justify-content: center;
  gap: 2px;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  position: sticky;
  top: var(--nav-height);
  z-index: 50;
}

.pt-az__letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.pt-az__letter:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.pt-az__letter.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(74, 124, 89, 0.3);
}

/* Search */
.pt-az__search {
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
}

.pt-az__search-input {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-family: var(--font-body);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-card);
  color: var(--color-text);
  transition: all var(--transition-fast);
  outline: none;
}

.pt-az__search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(74, 124, 89, 0.1);
}

.pt-az__search-input::placeholder {
  color: var(--color-text-muted);
}

/* Letter Sections */
.pt-az__letter-section {
  margin-bottom: var(--space-3xl);
  scroll-margin-top: calc(var(--nav-height) + 80px);
}

.pt-az__letter-heading {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary-bg);
}

/* Plant Grid */
.pt-az__plant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-sm);
}

.pt-plant-item {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
  color: inherit;
  border: 1px solid transparent;
}

.pt-plant-item:hover {
  background: var(--color-bg-card);
  border-color: var(--color-border);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

[dir="rtl"] .pt-plant-item:hover {
  transform: translateX(-4px);
}

.pt-plant-item__name {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 2px;
}

.pt-plant-item__sub {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.pt-plant-item__badge {
  position: absolute;
  top: 50%;
  right: var(--space-md);
  transform: translateY(-50%);
  font-size: 0.65rem;
  font-weight: 600;
  color: white;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

[dir="rtl"] .pt-plant-item__badge {
  right: auto;
  left: var(--space-md);
}

/* Empty state */
.pt-az__empty {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
}

.pt-az__empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.pt-az__empty-sub {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

/* Responsive */
@media (max-width: 768px) {
  .pt-categories__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .pt-az__alpha-bar {
    gap: 1px;
    padding: var(--space-sm);
  }

  .pt-az__letter {
    width: 30px;
    height: 30px;
    font-size: 0.75rem;
  }

  .pt-az__plant-grid {
    grid-template-columns: 1fr;
  }

  .pt-az__toggle-btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .pt-categories__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .pt-category-card {
    padding: var(--space-md) var(--space-sm);
  }

  .pt-category-card__icon {
    width: 56px;
    height: 56px;
    font-size: 2rem;
  }
}