/* =========================================================
   KisanLink Design System
   Earth-tone palette · Mobile-first · Translation-ready
   ========================================================= */

/* ─── CSS Custom Properties ──────────────────────────────── */
:root {
  /* Brand Palette */
  --clr-primary-900: #0d2e1a;
  --clr-primary-800: #1a4d2e;
  --clr-primary-700: #1e5c34;
  --clr-primary-600: #2d7a45;
  --clr-primary-500: #3a9157;
  --clr-primary-400: #52b069;
  --clr-primary-300: #7bc98a;
  --clr-primary-200: #aee1b8;
  --clr-primary-100: #d8f0dd;
  --clr-primary-50:  #f0faf2;

  /* Accent — Warm Amber */
  --clr-accent-900: #5c3800;
  --clr-accent-800: #8b5e3c;
  --clr-accent-700: #b87333;
  --clr-accent-600: #d4903f;
  --clr-accent-500: #e9a84c;
  --clr-accent-400: #f4c261;
  --clr-accent-300: #f9d888;
  --clr-accent-200: #fce9b4;
  --clr-accent-100: #fef6e1;
  --clr-accent-50:  #fffaf0;

  /* Neutrals — Warm Cream */
  --clr-neutral-950: #0a0b0a;
  --clr-neutral-900: #141614;
  --clr-neutral-800: #252825;
  --clr-neutral-700: #3a3e3a;
  --clr-neutral-600: #525752;
  --clr-neutral-500: #6d736d;
  --clr-neutral-400: #8e948e;
  --clr-neutral-300: #b4bab4;
  --clr-neutral-200: #d6dbd6;
  --clr-neutral-100: #edf0ed;
  --clr-neutral-50:  #f8faf8;
  --clr-white:       #ffffff;

  /* Semantic */
  --clr-success:  #2d9c52;
  --clr-warning:  #d9920f;
  --clr-danger:   #c0392b;
  --clr-info:     #2471a3;

  /* Surface (light mode default) */
  --surface-bg:       #f5f7f5;
  --surface-card:     #ffffff;
  --surface-elevated: #ffffff;
  --surface-border:   #dde3dd;
  --surface-input:    #ffffff;
  --surface-overlay:  rgba(13,46,26,0.7);

  /* Text */
  --text-primary:   #141614;
  --text-secondary: #525752;
  --text-muted:     #8e948e;
  --text-inverse:   #ffffff;
  --text-accent:    var(--clr-primary-700);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans Devanagari', system-ui, -apple-system, sans-serif;
  --font-display: 'Inter', 'Noto Sans Devanagari', sans-serif;

  /* Type Scale (fluid) */
  --text-xs:   clamp(0.7rem,  1.5vw, 0.75rem);
  --text-sm:   clamp(0.8rem,  1.8vw, 0.875rem);
  --text-base: clamp(0.9rem,  2vw,   1rem);
  --text-md:   clamp(1rem,    2.2vw, 1.125rem);
  --text-lg:   clamp(1.1rem,  2.5vw, 1.25rem);
  --text-xl:   clamp(1.25rem, 3vw,   1.5rem);
  --text-2xl:  clamp(1.5rem,  3.5vw, 1.875rem);
  --text-3xl:  clamp(1.875rem,4.5vw, 2.25rem);
  --text-4xl:  clamp(2.25rem, 5.5vw, 3rem);
  --text-5xl:  clamp(2.75rem, 7vw,   4rem);

  /* Font Weights */
  --fw-light:     300;
  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;
  --fw-extrabold: 800;
  --fw-black:     900;

  /* Line Heights */
  --lh-tight:   1.2;
  --lh-snug:    1.35;
  --lh-normal:  1.5;
  --lh-relaxed: 1.65;
  --lh-loose:   1.8;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-3xl:  2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.09), 0 10px 10px rgba(0,0,0,0.04);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,0.15);
  --shadow-green: 0 4px 20px rgba(45,106,79,0.25);
  --shadow-amber: 0 4px 20px rgba(233,168,76,0.35);

  /* 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);

  /* Z-index */
  --z-below:   -1;
  --z-base:     0;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  300;
  --z-modal:    400;
  --z-toast:    500;
  --z-top:      999;

  /* Layout */
  --container-xs:  480px;
  --container-sm:  640px;
  --container-md:  768px;
  --container-lg:  1024px;
  --container-xl:  1280px;
  --container-2xl: 1440px;

  /* Nav */
  --nav-height: 4rem;
}

/* ─── Dark Mode ───────────────────────────────────────────── */
[data-theme="dark"] {
  --surface-bg:       #0f1610;
  --surface-card:     #1a2218;
  --surface-elevated: #222d1f;
  --surface-border:   #2d3d2a;
  --surface-input:    #1a2218;
  --surface-overlay:  rgba(0,0,0,0.8);

  --text-primary:   #e8ede8;
  --text-secondary: #a8b8a8;
  --text-muted:     #6d7d6d;
  --text-inverse:   #141614;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.4);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.5);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background-color: var(--surface-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
}

img, video, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
ul, ol { list-style: none; }
table { border-collapse: collapse; }
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
}

/* ─── Layout Utilities ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px)  { .container { padding-inline: var(--space-6); } }
@media (min-width: 1024px) { .container { padding-inline: var(--space-8); } }

.container--narrow { max-width: var(--container-md); }
.container--wide   { max-width: var(--container-2xl); }

.flex          { display: flex; }
.flex-col      { display: flex; flex-direction: column; }
.items-center  { align-items: center; }
.items-start   { align-items: flex-start; }
.justify-center{ justify-content: center; }
.justify-between{ justify-content: space-between; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

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

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (min-width: 768px) and (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Gradients ───────────────────────────────────────────── */
.gradient-primary {
  background: linear-gradient(135deg, var(--clr-primary-800) 0%, var(--clr-primary-600) 50%, var(--clr-primary-500) 100%);
}
.gradient-accent {
  background: linear-gradient(135deg, var(--clr-accent-700) 0%, var(--clr-accent-500) 100%);
}
.gradient-earth {
  background: linear-gradient(135deg, var(--clr-primary-900) 0%, var(--clr-primary-800) 40%, var(--clr-accent-800) 100%);
}
.gradient-text {
  background: linear-gradient(135deg, var(--clr-primary-600), var(--clr-accent-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Glassmorphism ───────────────────────────────────────── */
.glass {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.15);
}
.glass-dark {
  background: rgba(0,0,0,0.2);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.08);
}
.glass-green {
  background: rgba(45,106,79,0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(45,106,79,0.25);
}

/* ─── Typography Utilities ────────────────────────────────── */
.text-xs   { font-size: var(--text-xs); }
.text-sm   { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-md   { font-size: var(--text-md); }
.text-lg   { font-size: var(--text-lg); }
.text-xl   { font-size: var(--text-xl); }
.text-2xl  { font-size: var(--text-2xl); }
.text-3xl  { font-size: var(--text-3xl); }
.text-4xl  { font-size: var(--text-4xl); }
.text-5xl  { font-size: var(--text-5xl); }

.font-light     { font-weight: var(--fw-light); }
.font-regular   { font-weight: var(--fw-regular); }
.font-medium    { font-weight: var(--fw-medium); }
.font-semibold  { font-weight: var(--fw-semibold); }
.font-bold      { font-weight: var(--fw-bold); }
.font-extrabold { font-weight: var(--fw-extrabold); }

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

.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-inverse   { color: var(--text-inverse); }
.text-green     { color: var(--clr-primary-600); }
.text-amber     { color: var(--clr-accent-600); }
.text-success   { color: var(--clr-success); }
.text-danger    { color: var(--clr-danger); }
.text-warning   { color: var(--clr-warning); }

/* ─── Spacing Utilities ───────────────────────────────────── */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.p-4  { padding: var(--space-4); }
.p-6  { padding: var(--space-6); }
.p-8  { padding: var(--space-8); }

/* ─── Visibility ──────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.hidden { display: none !important; }

@media (max-width: 768px)  { .hide-mobile  { display: none !important; } }
@media (min-width: 769px)  { .show-mobile  { display: none !important; } }
@media (min-width: 1025px) { .hide-desktop { display: none !important; } }

/* ─── Animations & Keyframes ──────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.5; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}
@keyframes ripple {
  0%   { transform: scale(0); opacity: 0.6; }
  100% { transform: scale(4); opacity: 0; }
}
@keyframes tickerSlide {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.animate-fade-in       { animation: fadeIn var(--transition-slow) ease both; }
.animate-fade-in-left  { animation: fadeInLeft var(--transition-slow) ease both; }
.animate-fade-in-right { animation: fadeInRight var(--transition-slow) ease both; }
.animate-scale-in      { animation: scaleIn var(--transition-slow) ease both; }
.animate-float         { animation: float 3s ease-in-out infinite; }
.animate-pulse         { animation: pulse 2s ease-in-out infinite; }
.animate-spin          { animation: spin 1s linear infinite; }

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* ─── Skeleton Loading ────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--clr-neutral-100) 25%, var(--clr-neutral-200) 50%, var(--clr-neutral-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ─── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--clr-primary-300);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--clr-primary-500); }

/* ─── Selection ───────────────────────────────────────────── */
::selection {
  background: var(--clr-primary-200);
  color: var(--clr-primary-900);
}

/* ─── Focus Ring ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--clr-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}