/**
 * Nightingale Agro Industries Private Limited
 * Core Layout, Global Base & Responsive Design Engine
 * @version 4.0.0 — Modern Corporate Agro Redesign
 */

/* ==========================================================================
   1. CSS RESET & GLOBAL BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family-base, 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-size: 16px;
  line-height: var(--line-height-normal, 1.55);
  color: var(--color-text-main, #18221D);
  background-color: var(--color-bg-main, #F7F7F3);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
  background-color: var(--color-bg-main, #F7F7F3);
  color: var(--color-text-main, #18221D);
  width: 100%;
  position: relative;
}

/* Zero-Overflow Media Containers */
img, svg, picture, video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary, #123D2A);
  text-decoration: none;
  transition: color var(--transition-fast, 160ms ease);
}

a:hover {
  color: var(--color-secondary, #2F6B3F);
}

/* ==========================================================================
   2. TYPOGRAPHY HIERARCHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading, 'Poppins', 'Inter', system-ui, sans-serif);
  color: var(--color-primary, #123D2A);
  line-height: var(--line-height-tight, 1.15);
  letter-spacing: -0.02em;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* Desktop: H1 56-68px | Mobile: 36-42px */
h1 {
  font-size: clamp(2.25rem, 4.5vw + 0.5rem, 4.25rem);
  font-weight: 700;
  line-height: 1.12;
}

/* Desktop: H2 38-48px | Mobile: 28-34px */
h2 {
  font-size: clamp(1.75rem, 2.8vw + 0.5rem, 3rem);
  font-weight: 700;
  line-height: 1.2;
}

/* Desktop: H3 22-28px | Mobile: 20-22px */
h3 {
  font-size: clamp(1.25rem, 1.2vw + 0.5rem, 1.75rem);
  font-weight: 600;
  line-height: 1.3;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
}

h5 {
  font-size: 1.0625rem;
  font-weight: 600;
}

h6 {
  font-size: 0.9375rem;
  font-weight: 600;
}

p {
  color: var(--color-text-muted, #68736C);
  font-size: var(--font-size-body, 1.0625rem);
  line-height: var(--line-height-relaxed, 1.68);
  word-wrap: break-word;
}

p:last-child {
  margin-bottom: 0;
}

ul, ol {
  list-style: none;
}

/* Eyebrows & Badges */
.eyebrow-text {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold, #C99A3D);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.eyebrow-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-gold, #C99A3D);
  border-radius: 2px;
  display: inline-block;
  flex-shrink: 0;
}

/* ==========================================================================
   3. GLOBAL CONTAINER SYSTEM & PADDINGS
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width, 1240px);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-desktop, 32px);
  padding-right: var(--container-padding-desktop, 32px);
  box-sizing: border-box;
}

.container-narrow {
  max-width: var(--container-narrow-width, 860px);
}

.section {
  padding-top: var(--spacing-20, 5rem);
  padding-bottom: var(--spacing-20, 5rem);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.section-sm {
  padding-top: var(--spacing-12, 3rem);
  padding-bottom: var(--spacing-12, 3rem);
}

.section-lg {
  padding-top: var(--spacing-24, 6rem);
  padding-bottom: var(--spacing-24, 6rem);
}

.bg-white { background-color: var(--color-white, #FFFFFF); }
.bg-main { background-color: var(--color-bg-main, #F7F7F3); }
.bg-alt { background-color: var(--color-bg-surface-alt, #F0F2EE); }
.bg-dark {
  background-color: var(--color-primary, #123D2A);
  color: #FFFFFF;
}

/* ==========================================================================
   4. BUTTON SYSTEM (MIN 48PX ACCESSIBLE TAP TARGET)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 24px;
  font-family: var(--font-family-base, 'Inter', sans-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal, 260ms ease);
  box-sizing: border-box;
  white-space: nowrap;
  border: 1.5px solid transparent;
}

/* Primary Button: Deep Corporate Green */
.btn-primary {
  background-color: var(--color-primary, #123D2A);
  color: #FFFFFF !important;
  border-color: var(--color-primary, #123D2A);
  box-shadow: 0 2px 8px rgba(18, 61, 42, 0.16);
}

.btn-primary:hover {
  background-color: var(--color-secondary, #2F6B3F);
  border-color: var(--color-secondary, #2F6B3F);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(18, 61, 42, 0.22);
}

/* Secondary / Outline Button */
.btn-outline {
  background-color: #FFFFFF;
  color: var(--color-primary, #123D2A) !important;
  border-color: var(--color-border, #E3E7E3);
}

.btn-outline:hover {
  background-color: var(--color-bg-main, #F7F7F3);
  border-color: var(--color-primary, #123D2A);
  transform: translateY(-2px);
}

/* Outline on Dark Surfaces */
.btn-outline-white {
  background-color: transparent;
  color: #FFFFFF !important;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline-white:hover {
  background-color: #FFFFFF;
  color: var(--color-primary, #123D2A) !important;
  border-color: #FFFFFF;
  transform: translateY(-2px);
}

/* Subtle Gold Button */
.btn-gold {
  background-color: var(--color-gold, #C99A3D);
  color: #FFFFFF !important;
  border-color: var(--color-gold, #C99A3D);
  box-shadow: 0 2px 8px rgba(201, 154, 61, 0.2);
}

.btn-gold:hover {
  background-color: var(--color-gold-hover, #B58832);
  border-color: var(--color-gold-hover, #B58832);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(201, 154, 61, 0.3);
}

.btn-sm {
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.875rem;
}

.btn-lg {
  min-height: 52px;
  padding: 0 28px;
  font-size: 1rem;
}

/* ==========================================================================
   5. RESPONSIVE GRID & FLEX UTILITIES
   ========================================================================== */
.grid { 
  display: grid; 
  gap: 1.5rem; 
  width: 100%;
  box-sizing: border-box;
}

.grid > *,
.flex > * {
  min-width: 0;
  max-width: 100%;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-xs, 4px);
}

.badge-gold {
  background-color: var(--color-gold-light, #FDF9F0);
  color: var(--color-gold-hover, #B58832);
  border: 1px solid rgba(201, 154, 61, 0.3);
}

.badge-green {
  background-color: var(--color-accent-light, #EBF3ED);
  color: var(--color-secondary, #2F6B3F);
  border: 1px solid rgba(47, 107, 63, 0.25);
}

/* ==========================================================================
   6. RESPONSIVE BREAKPOINTS & MOBILE SAFETY
   ========================================================================== */

/* Large Tablets / Small Laptops (<= 1120px) */
@media (max-width: 1120px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

/* Medium Tablets & Landscape (<= 900px) */
@media (max-width: 900px) {
  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .grid-cols-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-cols-2 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Standard Mobile Devices (<= 768px) */
@media (max-width: 768px) {
  .container {
    padding-left: var(--container-padding-mobile, 18px);
    padding-right: var(--container-padding-mobile, 18px);
  }

  .section {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .section-lg {
    padding-top: 3.75rem;
    padding-bottom: 3.75rem;
  }

  .grid-cols-4, .grid-cols-3 {
    grid-template-columns: 1fr;
  }
}

/* Small Mobile (<= 480px / 360px - 390px) */
@media (max-width: 480px) {
  .btn {
    min-height: 48px;
  }
}