/* ==========================================================================
   SmartSoil AI — Main CSS Design System & Theme Engine
   Aesthetic: Premium AgriTech, Emerald/Forest Glassmorphism, Farmer Friendly
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Noto+Sans+Devanagari:wght@400;500;600;700&family=Noto+Sans+Tamil:wght@400;500;600;700&family=Noto+Sans+Telugu:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette — Agricultural Premium */
  --primary-50: #ecfdf5;
  --primary-100: #d1fae5;
  --primary-200: #a7f3d0;
  --primary-300: #6ee7b7;
  --primary-400: #34d399;
  --primary-500: #10b981;
  --primary-600: #059669;
  --primary-700: #047857;
  --primary-800: #065f46;
  --primary-900: #064e3b;
  --primary-950: #022c22;

  /* Harvest Amber & Earth Accents */
  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --amber-700: #b45309;

  /* Soil Brown / Earth Tones */
  --earth-50: #fdf8f6;
  --earth-100: #f2e8e5;
  --earth-500: #8c5338;
  --earth-700: #5c3221;
  --earth-900: #3b1d11;

  /* Status Colors */
  --status-good: #10b981;
  --status-good-bg: rgba(16, 185, 129, 0.12);
  --status-warn: #f59e0b;
  --status-warn-bg: rgba(245, 158, 11, 0.12);
  --status-alert: #ef4444;
  --status-alert-bg: rgba(239, 68, 68, 0.12);
  --status-info: #0ea5e9;
  --status-info-bg: rgba(14, 165, 233, 0.12);

  /* Light Theme (Default) */
  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --glass-bg: rgba(255, 255, 255, 0.78);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px 0 rgba(16, 185, 129, 0.08);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 25px rgba(16, 185, 129, 0.25);

  /* Typography */
  --font-heading: 'Outfit', 'Noto Sans Devanagari', 'Noto Sans Tamil', sans-serif;
  --font-body: 'Inter', 'Noto Sans Devanagari', 'Noto Sans Tamil', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout */
  --header-height: 72px;
  --mobile-nav-height: 68px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-app: #090e15;
  --bg-surface: #111827;
  --bg-surface-elevated: #1e293b;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(30, 41, 59, 0.95);
  --border-color: #273549;
  --border-light: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --glass-bg: rgba(17, 24, 39, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(at 0% 0%, rgba(16, 185, 129, 0.06) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(245, 158, 11, 0.04) 0px, transparent 50%);
  background-attachment: fixed;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.65rem); }
h4 { font-size: 1.25rem; }
p { color: var(--text-secondary); }

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-700);
}

/* Layout Grid & Containers */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.main-content {
  padding-top: calc(var(--header-height) + 1.5rem);
  padding-bottom: 5rem;
  min-height: calc(100vh - var(--header-height));
}

@media (max-width: 768px) {
  .main-content {
    padding-bottom: calc(var(--mobile-nav-height) + 2rem);
  }
}

/* Glassmorphic Container */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-lg);
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.glass-panel:hover {
  border-color: rgba(16, 185, 129, 0.3);
}

/* Header & Main Navigation */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-700);
  cursor: pointer;
}

[data-theme="dark"] .brand-logo {
  color: var(--primary-400);
}

.brand-badge {
  font-size: 0.7rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-600), var(--amber-600));
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu-desktop {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: transparent;
}

.nav-link:hover {
  color: var(--primary-700);
  background: var(--primary-50);
}

[data-theme="dark"] .nav-link:hover {
  color: var(--primary-300);
  background: rgba(16, 185, 129, 0.1);
}

.nav-link.active {
  color: var(--primary-700);
  background: var(--primary-100);
  font-weight: 600;
}

[data-theme="dark"] .nav-link.active {
  color: var(--primary-300);
  background: rgba(16, 185, 129, 0.2);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-nav-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  z-index: 1000;
  padding: 0.25rem 0.5rem;
}

@media (max-width: 992px) {
  .nav-menu-desktop {
    display: none;
  }
  .mobile-bottom-nav {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    align-items: center;
  }
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  background: transparent;
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-nav-item.active {
  color: var(--primary-600);
  font-weight: 700;
}

.mobile-nav-item svg {
  width: 20px;
  height: 20px;
}

/* Live Market Marquee Ticker */
.market-ticker-banner {
  background: linear-gradient(90deg, var(--primary-900), #0f2b20);
  color: #a7f3d0;
  padding: 0.4rem 0;
  font-size: 0.82rem;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  border-bottom: 1px solid rgba(16, 185, 129, 0.2);
}

.ticker-track {
  display: inline-flex;
  gap: 2.5rem;
  animation: ticker-scroll 35s linear infinite;
}

.ticker-track:hover {
  animation-play-state: paused;
}

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.ticker-item .price {
  color: #ffffff;
  font-weight: 700;
}

.ticker-item .trend-up {
  color: #34d399;
}

.ticker-item .trend-down {
  color: #f87171;
}

/* View Sections Routing */
.view-section {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.view-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-app);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}