/* ==========================================================================
   UseAI Kisan — Core Stylesheet
   Agriculture + Trust + Technology + Simplicity
   ========================================================================== */

:root {
  /* Brand palette */
  --uai-green: #2e7d32;
  --uai-green-dark: #1b5e20;
  --uai-green-light: #e6f4ea;
  --uai-earth: #8d6e46;
  --uai-cream: #faf7f0;
  --uai-white: #ffffff;
  --uai-text: #1f2b1f;
  --uai-muted: #5d6b5d;
  --uai-border: #e1ded3;
  --uai-success: #2e7d32;
  --uai-warning: #b8860b;
  --uai-danger: #b3261e;

  /* Layout */
  --uai-container: 1200px;
  --uai-radius: 10px;
  --uai-radius-sm: 6px;
  --uai-shadow: 0 1px 2px rgba(31, 43, 31, 0.06), 0 2px 8px rgba(31, 43, 31, 0.06);
  --uai-shadow-hover: 0 4px 16px rgba(31, 43, 31, 0.10);
  --uai-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--uai-font);
  color: var(--uai-text);
  background: var(--uai-cream);
  line-height: 1.6;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--uai-green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; margin: 0 0 0.5em; font-weight: 700; }
h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.25em; }
button { font-family: inherit; }

/* ---------- Accessibility ---------- */
.screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}
.uai-skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--uai-green-dark);
  color: #fff;
  padding: 0.75em 1.25em;
  z-index: 10000;
  border-radius: 0 0 var(--uai-radius-sm) 0;
}
.uai-skip-link:focus {
  left: 0;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--uai-green);
  outline-offset: 2px;
}

/* ---------- Layout helpers ---------- */
.uai-container {
  max-width: var(--uai-container);
  margin: 0 auto;
  padding: 0 20px;
}
.uai-section {
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}
.uai-section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2rem;
}
.uai-section-header p { color: var(--uai-muted); }
.uai-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.uai-grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* ---------- Buttons ---------- */
.uai-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.75em 1.5em;
  border-radius: var(--uai-radius-sm);
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  min-height: 44px;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.uai-button-primary {
  background: var(--uai-green);
  color: #fff;
}
.uai-button-primary:hover { background: var(--uai-green-dark); color: #fff; text-decoration: none; }
.uai-button-secondary {
  background: var(--uai-white);
  color: var(--uai-green-dark);
  border-color: var(--uai-green);
}
.uai-button-secondary:hover { background: var(--uai-green-light); text-decoration: none; }

/* ---------- Header ---------- */
.uai-header {
  background: var(--uai-white);
  border-bottom: 1px solid var(--uai-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.uai-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}
.uai-logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--uai-green-dark);
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.uai-logo img { max-height: 44px; width: auto; }
.uai-primary-nav { display: none; }
.uai-primary-nav ul { list-style: none; display: flex; gap: 1.5rem; margin: 0; padding: 0; }
.uai-primary-nav a { color: var(--uai-text); font-weight: 500; }
.uai-primary-nav a:hover { color: var(--uai-green-dark); }
.uai-header-actions { display: flex; align-items: center; gap: 0.75rem; }
.uai-header-actions .uai-search { display: none; }
.uai-mobile-toggle {
  background: none;
  border: none;
  display: inline-flex;
  padding: 0.5em;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

@media (min-width: 900px) {
  .uai-primary-nav { display: block; }
  .uai-header-actions .uai-search { display: flex; }
  .uai-mobile-toggle { display: none; }
}

/* Mobile menu panel */
.uai-mobile-menu {
  display: none;
  background: var(--uai-white);
  border-top: 1px solid var(--uai-border);
}
.uai-mobile-menu.is-open { display: block; }
.uai-mobile-menu ul { list-style: none; margin: 0; padding: 0.5rem 20px 1rem; }
.uai-mobile-menu li { border-bottom: 1px solid var(--uai-border); }
.uai-mobile-menu a { display: block; padding: 0.9rem 0; color: var(--uai-text); font-weight: 500; }

/* ---------- Account menu (Dashboard / Profile / Logout) ---------- */
.uai-account-menu { position: relative; }
.uai-account-menu summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}
.uai-account-menu summary::-webkit-details-marker { display: none; }
.uai-account-menu summary:focus-visible {
  outline: 3px solid var(--uai-green);
  outline-offset: 2px;
}
.uai-account-name {
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.uai-account-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--uai-white);
  border: 1px solid var(--uai-border);
  border-radius: var(--uai-radius-sm);
  box-shadow: var(--uai-shadow-hover);
  min-width: 180px;
  z-index: 200;
  padding: 0.4rem;
}
.uai-account-dropdown a {
  display: block;
  padding: 0.6em 0.75em;
  border-radius: 6px;
  color: var(--uai-text);
  font-weight: 500;
  font-size: 0.92rem;
}
.uai-account-dropdown a:hover {
  background: var(--uai-green-light);
  text-decoration: none;
}
/* Close the dropdown when clicking elsewhere is handled natively by
   <details>/<summary> losing focus; no JS required. */

/* ---------- Search ---------- */
.uai-search { display: flex; align-items: center; border: 1px solid var(--uai-border); border-radius: var(--uai-radius-sm); overflow: hidden; background: var(--uai-cream); }
.uai-search-input { border: none; background: transparent; padding: 0.6em 0.8em; min-width: 200px; font-size: 0.95rem; }
.uai-search-input:focus { outline: none; }
.uai-search-submit { border: none; background: transparent; padding: 0 0.8em; min-height: 44px; cursor: pointer; }

/* ---------- Hero ---------- */
.uai-hero {
  background: linear-gradient(180deg, var(--uai-green-light) 0%, var(--uai-cream) 100%);
  padding: clamp(2.5rem, 6vw, 5rem) 0;
}
.uai-hero-inner {
  display: grid;
  gap: 2rem;
  align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .uai-hero-inner { grid-template-columns: 1.1fr 0.9fr; }
}
.uai-hero-text h1 { color: var(--uai-green-dark); }
.uai-hero-text p { font-size: 1.1rem; color: var(--uai-muted); max-width: 42ch; }
.uai-hero-ctas { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.uai-hero-image img { border-radius: var(--uai-radius); box-shadow: var(--uai-shadow); }

/* ---------- Cards ---------- */
.uai-card {
  background: var(--uai-white);
  border: 1px solid var(--uai-border);
  border-radius: var(--uai-radius);
  box-shadow: var(--uai-shadow);
  padding: 1.25rem;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
a.uai-card { color: inherit; display: block; }
a.uai-card:hover { box-shadow: var(--uai-shadow-hover); transform: translateY(-2px); text-decoration: none; }
.uai-card-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.uai-card-image { margin: -1.25rem -1.25rem 1rem; border-radius: var(--uai-radius) var(--uai-radius) 0 0; overflow: hidden; }
.uai-card-title { margin: 0.25rem 0 0.4rem; font-size: 1.05rem; }
.uai-card-excerpt { color: var(--uai-muted); font-size: 0.92rem; margin-bottom: 0.75rem; }
.uai-card-cta { color: var(--uai-green-dark); font-weight: 600; font-size: 0.9rem; }

.uai-tool-card, .uai-crop-card, .uai-report-card { height: 100%; }

.uai-stat-card {
  background: var(--uai-white);
  border: 1px solid var(--uai-border);
  border-radius: var(--uai-radius);
  padding: 1.25rem;
  text-align: center;
}
.uai-stat-card .uai-stat-value { font-size: 1.6rem; font-weight: 800; color: var(--uai-green-dark); }
.uai-stat-card .uai-stat-label { color: var(--uai-muted); font-size: 0.9rem; }

/* ---------- Badges ---------- */
.uai-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2em 0.65em;
  border-radius: 999px;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.uai-badge-info { background: #eef2ff; color: #3730a3; }
.uai-badge-success { background: var(--uai-green-light); color: var(--uai-green-dark); }
.uai-badge-warning { background: #fef3c7; color: #92400e; }

/* ---------- Breadcrumb ---------- */
.uai-breadcrumb { padding: 0.9rem 0; font-size: 0.88rem; color: var(--uai-muted); }
.uai-breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; gap: 0.4em; }
.uai-breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 0.4em; color: var(--uai-border); }
.uai-breadcrumb a { color: var(--uai-muted); }

/* ---------- Alerts / Disclaimer ---------- */
.uai-alert {
  display: flex;
  gap: 0.6em;
  align-items: flex-start;
  background: var(--uai-green-light);
  border: 1px solid var(--uai-border);
  border-radius: var(--uai-radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
  color: var(--uai-muted);
  margin: 1.5rem 0;
}
.uai-alert p { margin: 0; }
.uai-alert-disclaimer { background: var(--uai-cream); }

/* ---------- Empty states ---------- */
.uai-empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  background: var(--uai-white);
  border: 1px dashed var(--uai-border);
  border-radius: var(--uai-radius);
}
.uai-empty-state-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.uai-empty-state h3 { margin-bottom: 0.4rem; }
.uai-empty-state p { color: var(--uai-muted); }

/* ---------- How it works steps ---------- */
.uai-steps { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.uai-step { text-align: center; padding: 1.25rem; }
.uai-step-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--uai-green); color: #fff; font-weight: 700;
  margin-bottom: 0.75rem;
}

/* ---------- Trust section ---------- */
.uai-trust-grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); text-align: center; }
.uai-trust-item .uai-trust-icon { font-size: 2rem; margin-bottom: 0.5rem; }

/* ---------- Newsletter ---------- */
.uai-newsletter { background: var(--uai-green-dark); color: #fff; text-align: center; }
.uai-newsletter h2 { color: #fff; }
.uai-newsletter p { color: #d9e9db; }
.uai-newsletter-form { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; margin-top: 1.5rem; }
.uai-newsletter-form input[type="email"] {
  padding: 0.75em 1em; border-radius: var(--uai-radius-sm); border: none; min-width: 260px; min-height: 44px; font-size: 1rem;
}
.uai-newsletter-form button { min-height: 44px; }

/* ---------- Footer ---------- */
.uai-footer { background: var(--uai-text); color: #d7ded7; }
.uai-footer-grid {
  display: grid; gap: 2rem; padding: 3rem 0 2rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.uai-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 0.9rem; }
.uai-footer ul { list-style: none; margin: 0; padding: 0; }
.uai-footer li { margin-bottom: 0.5rem; }
.uai-footer a { color: #b9c4b9; }
.uai-footer a:hover { color: #fff; }
.uai-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.25rem 0;
  font-size: 0.85rem;
  display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: space-between;
}
.uai-social-links { display: flex; gap: 0.75rem; }
.uai-social-links a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.08);
}

/* ---------- Forms (login/register/search etc.) ---------- */
.uai-form { max-width: 420px; margin: 0 auto; }
.uai-form label { display: block; font-weight: 600; margin-bottom: 0.35em; }
.uai-form input[type="text"],
.uai-form input[type="email"],
.uai-form input[type="password"],
.uai-form input[type="number"] {
  width: 100%;
  padding: 0.75em 0.9em;
  border: 1px solid var(--uai-border);
  border-radius: var(--uai-radius-sm);
  margin-bottom: 1rem;
  min-height: 44px;
  font-size: 1rem;
}
.uai-form-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }

/* ---------- Sticky mobile CTA ---------- */
.uai-sticky-cta {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--uai-white);
  border-top: 1px solid var(--uai-border);
  padding: 0.75rem 1rem;
  display: flex; gap: 0.75rem;
  z-index: 90;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.06);
}
.uai-sticky-cta .uai-button { flex: 1; }
@media (min-width: 900px) {
  .uai-sticky-cta { display: none; }
}

/* ---------- Utility ---------- */
.uai-muted { color: var(--uai-muted); }
.uai-text-center { text-align: center; }
.uai-mt-0 { margin-top: 0; }
.uai-mb-0 { margin-bottom: 0; }

/* ---------- Blog / article ---------- */
.uai-article-header { max-width: 760px; margin: 0 auto 2rem; }
.uai-article-meta { color: var(--uai-muted); font-size: 0.9rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.uai-article-content { max-width: 760px; margin: 0 auto; }
.uai-article-content img { border-radius: var(--uai-radius); }
.uai-article-content h2 { margin-top: 2rem; }
.uai-toc { background: var(--uai-white); border: 1px solid var(--uai-border); border-radius: var(--uai-radius); padding: 1.25rem; margin-bottom: 2rem; }
.uai-toc ol { margin: 0; padding-left: 1.25rem; }

/* ---------- Archive filters ---------- */
.uai-filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0; }
.uai-filter-pill {
  padding: 0.45em 1em; border-radius: 999px; border: 1px solid var(--uai-border);
  background: var(--uai-white); font-size: 0.9rem; cursor: pointer; min-height: 40px;
}
.uai-filter-pill[aria-pressed="true"] { background: var(--uai-green); color: #fff; border-color: var(--uai-green); }

/* ---------- Responsive container tweaks ---------- */
@media (max-width: 480px) {
  .uai-container { padding: 0 16px; }
  .uai-newsletter-form input[type="email"] { min-width: 100%; }
}