/* ==========================================================================
   Agritrade — Global Stylesheet (assets/css/main.css)
   - Colorful gradients, soft cards, animated accents
   - Pairs with W3.CSS + Font Awesome
   - Used by: /index.php, /market/*.php, /includes/header|footer.php
   ========================================================================== */

/* --------------------------- CSS Variables ------------------------------- */
:root{
  --blue:  #2bb1ff;
  --green: #22c55e;
  --pink:  #ff63a5;
  --violet:#7c3aed;
  --red:   #ef4444;
  --teal:  #10b981;

  --ink:   #0f172a;
  --muted: #475569;
  --line:  rgba(15,23,42,.12);
  --paper: #ffffff;
  --glassA: rgba(255,255,255,.96);
  --glassB: rgba(255,255,255,.86);

  --radius-xs: 10px;
  --radius-s:  12px;
  --radius-m:  16px;
  --radius-l:  20px;
  --radius-xl: 24px;
  --shadow-s:  0 6px 14px rgba(0,0,0,.10);
  --shadow-m:  0 12px 32px rgba(0,0,0,.12);
  --shadow-l:  0 20px 50px rgba(0,0,0,.14);

  --trans-fast: .15s ease;
  --trans:      .2s ease;
  --trans-slow: .6s ease;

  --container:  1200px;
}

/* Dark mode (prefers-color-scheme) */
@media (prefers-color-scheme: dark){
  :root{
    --paper:#0b1220;
    --ink:#e2e8f0;
    --muted:#a5b4fc;
    --line:rgba(226,232,240,.16);
    --glassA: rgba(20,27,44,.86);
    --glassB: rgba(20,27,44,.72);
  }
}

/* ----------------------------- Base ------------------------------------- */
html,body{height:100%}
body{
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 800px at 10% 10%, rgba(43,177,255,.22), transparent 60%),
    radial-gradient(1000px 700px at 90% 20%, rgba(255,99,165,.18), transparent 60%),
    radial-gradient(900px 600px at 20% 90%, rgba(16,185,129,.20), transparent 60%),
    linear-gradient(120deg, #f0f9ff 0%, #fff7fb 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container{ max-width:var(--container); margin:18px auto; padding:0 14px; }

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

/* --------------------------- Typography --------------------------------- */
h1,h2,h3,h4{ color:var(--ink); line-height:1.2; margin:8px 0; }
h1{ font-weight:900; }
h2{ font-weight:800; }
h3{ font-weight:800; }
p{ color: var(--muted); }

/* --------------------------- Utilities ---------------------------------- */
.fade-in{ animation:fade .7s var(--trans) both; }
.floaty{ animation:floaty 5s ease-in-out infinite; }
.pulse{ animation:pulse 2.2s ease-in-out infinite; }
.shimmer{ position:relative; overflow:hidden; }
.shimmer::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  transform: translateX(-100%); animation: shimmer 2.4s linear infinite;
}
.badge, .pill{
  display:inline-block;
  border-radius:999px;
  padding:6px 10px;
  background:#fff;
  border:1px solid var(--line);
}
.center{ text-align:center; }
.right{ text-align:right; }
.mt-0{ margin-top:0 } .mt-1{ margin-top:6px } .mt-2{ margin-top:12px } .mt-3{ margin-top:18px } .mt-4{ margin-top:24px }
.mb-0{ margin-bottom:0 } .mb-1{ margin-bottom:6px } .mb-2{ margin-bottom:12px } .mb-3{ margin-bottom:18px } .mb-4{ margin-bottom:24px }
.round-xs{ border-radius:var(--radius-xs) } .round-s{ border-radius:var(--radius-s) } .round-m{ border-radius:var(--radius-m) } .round-l{ border-radius:var(--radius-l) } .round-xl{ border-radius:var(--radius-xl) }

/* --------------------------- Buttons ------------------------------------ */
.btn, .btn-grad{
  border:none; cursor:pointer; color:#fff; font-weight:900;
  padding:12px 16px; border-radius:var(--radius-s);
  transition: background-position var(--trans-slow), transform var(--trans), box-shadow var(--trans);
  box-shadow: var(--shadow-s);
}
.btn-grad{
  background: linear-gradient(90deg, var(--blue), var(--pink), var(--green), var(--red), var(--teal));
  background-size: 300% 100%;
}
.btn-grad:hover{ background-position:100% 0; transform: translateY(-1px); box-shadow: var(--shadow-m); }
.btn-outline{
  background: transparent; color: var(--ink);
  border:1px solid var(--line); box-shadow:none;
}
.btn-danger{ background: linear-gradient(90deg, var(--red), #fb7185); }
.btn-success{ background: linear-gradient(90deg, var(--green), #34d399); }
.btn-pill{ border-radius:999px; }

/* ---------------------------- Cards ------------------------------------- */
.soft-card, .card, .glass{
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, var(--glassA), var(--glassB));
  box-shadow: var(--shadow-m);
  transition: transform var(--trans), box-shadow var(--trans);
}
.soft-card:hover, .card:hover, .glass:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-l);
}
.card{ overflow:hidden; }
.pad{ padding:12px; }

/* Gradient border helper */
.gradient-border{
  position:relative;
  border-radius:inherit;
}
.gradient-border::before{
  content:"";
  position:absolute; inset:-1px; z-index:-1; border-radius:inherit;
  background: conic-gradient(from 180deg at 50% 50%, var(--blue), var(--green), var(--pink), var(--violet), var(--red), var(--teal), var(--blue));
  filter: blur(28px) saturate(120%); opacity:.28; animation: spin 18s linear infinite;
}

/* ---------------------------- Hero -------------------------------------- */
.hero{
  position:relative; overflow:hidden; border-radius:var(--radius-xl);
  background:linear-gradient(135deg, rgba(255,255,255,.95), rgba(255,255,255,.80));
  box-shadow: var(--shadow-l);
  text-align:center; padding:24px 16px;
}
.hero-bg{
  position:absolute; inset:-2px; z-index:0;
  background: conic-gradient(from 180deg at 50% 50%, var(--blue), var(--green), var(--pink), var(--violet), var(--red), var(--teal), var(--blue));
  filter: blur(40px) saturate(115%); opacity:.30; animation: spin 16s linear infinite;
}
.hero > *{ position:relative; z-index:1; }

/* --------------------------- Grid / Layout ------------------------------ */
.grid{ display:grid; gap:14px; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); }
.grid-2{ display:grid; gap:14px; grid-template-columns: 1fr 1fr; }
.grid-3{ display:grid; gap:14px; grid-template-columns: repeat(3, 1fr); }
.grid-12{ display:grid; gap:18px; grid-template-columns: repeat(12,1fr); }
.col-span-12{ grid-column: span 12 } .col-span-6{ grid-column: span 6 } .col-span-4{ grid-column: span 4 } .col-span-3{ grid-column: span 3 }

@media (max-width:980px){
  .grid-2, .grid-3{ grid-template-columns: 1fr; }
  .grid-12 > *{ grid-column: span 12; }
}

/* --------------------------- Marketplace Cards -------------------------- */
.item-card .img{ width:100%; height:150px; object-fit:cover; display:block; filter:saturate(110%); }
.item-card .title{ font-weight:800; margin:6px 0; color:var(--ink); }
.item-card .price{ font-weight:900; font-size:16px; color:var(--ink); }
.item-card .meta{ color:#64748b; font-size:12px; }
.tag{
  font-size:11px; border-radius:10px; padding:4px 8px; background:#fff; box-shadow: var(--shadow-s);
}

/* --------------------------- Filter Chips ------------------------------- */
.chips{ display:flex; flex-wrap:wrap; gap:8px; }
.chip{
  border-radius:999px; padding:6px 10px; background:#fff; font-weight:700;
  box-shadow: var(--shadow-s);
  transition: transform var(--trans), box-shadow var(--trans), background var(--trans);
}
.chip:hover{ transform: translateY(-1px); box-shadow: var(--shadow-m); background: linear-gradient(90deg, rgba(43,177,255,.08), rgba(255,99,165,.08)); }

/* --------------------------- Pagination --------------------------------- */
.pagi{
  display:flex; gap:8px; justify-content:center; margin:16px 0;
}
.pagi a, .pagi span{
  display:inline-block; padding:8px 12px; border-radius:10px; text-decoration:none; background:#fff;
  box-shadow: var(--shadow-s);
}
.pagi .current{
  background: linear-gradient(90deg, var(--blue), var(--pink));
  color:#fff; font-weight:900;
}

/* --------------------------- Insights / Charts -------------------------- */
.ins-card{
  background: linear-gradient(180deg, var(--glassA), var(--glassB));
  border-radius: var(--radius-m); padding:12px; box-shadow: var(--shadow-m);
}
.ins-card h3{ margin:6px 0 10px; }

/* --------------------------- Forms ------------------------------------- */
.inp, .sel, .txt, .agri-input{
  width:100%; border:none; outline:none; border-radius: var(--radius-s); padding:12px; background:#fff;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.08), var(--shadow-s);
}
.sel{ appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) calc(1em + 2px), calc(100% - 15px) calc(1em + 2px); background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.label{ font-weight:800; margin-bottom:6px; color:var(--ink); }
.meta{ color:#64748b; font-size:12px; }
.note{
  background:linear-gradient(90deg, rgba(43,177,255,.08), rgba(255,99,165,.08));
  border-left:4px solid var(--blue); padding:10px; border-radius:10px;
}

/* File input nicer */
input[type="file"].inp{ padding:10px; }

/* --------------------------- Header / Breadcrumbs ----------------------- */
.agri-announce{
  background:linear-gradient(90deg,var(--blue),var(--pink),var(--green),var(--red),var(--teal));
  background-size:300% 100%;
  animation: agriBand 16s linear infinite;
  color:#fff; text-align:center; padding:7px 10px; font-weight:700;
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
}
.agri-header-shell{
  position:sticky; top:0; z-index:1000; transition: box-shadow var(--trans), backdrop-filter var(--trans);
  backdrop-filter: blur(6px);
}
.agri-header-shell.scrolled{ box-shadow: 0 12px 34px rgba(0,0,0,.14); }
.agri-bc{
  max-width:var(--container); margin:12px auto 0; padding:0 16px 10px;
  color:#475569; font-size:.95rem;
}
.agri-bc a{ color:var(--ink); text-decoration:none; }
.agri-bc a:hover{ text-decoration:underline; }
.agri-bc .sep{ opacity:.5; margin:0 6px; }

/* --------------------------- Footer ------------------------------------ */
.agri-footer-wrap{
  position:relative; color:var(--ink);
  background:
    radial-gradient(1000px 600px at 90% 0%, rgba(255,99,165,.12), transparent 60%),
    radial-gradient(1000px 600px at 0% 80%, rgba(16,185,129,.15), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  margin-top:40px;
}
.agri-footer-top{
  height:10px;
  background:linear-gradient(90deg, var(--blue), var(--pink), var(--green), var(--red), var(--teal));
  background-size:300% 100%;
  animation: footerBand 18s linear infinite;
}
.agri-footer{ max-width:var(--container); margin:0 auto; padding:24px 14px 10px; }
.agri-social a{
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:12px; background:#fff; margin-right:8px;
  box-shadow: var(--shadow-s);
  transition: transform var(--trans), box-shadow var(--trans), background var(--trans);
}
.agri-social a:hover{ transform: translateY(-1px); box-shadow: var(--shadow-m); background:linear-gradient(90deg, rgba(43,177,255,.12), rgba(255,99,165,.12)) }
.agri-bottom{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px; padding:12px 0; border-top:1px dashed var(--line); margin-top:14px; color:#475569;
}

/* Back to top */
.back-to-top{
  position:fixed; right:16px; bottom:16px; z-index:1001;
  width:46px; height:46px; border-radius:14px; background:#ffffff;
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  box-shadow:0 10px 26px rgba(0,0,0,.22);
  transition: transform var(--trans), box-shadow var(--trans), opacity var(--trans);
  opacity:0; pointer-events:none;
}
.back-to-top.show{ opacity:1; pointer-events:auto }
.back-to-top:hover{ transform:translateY(-2px); box-shadow:0 14px 34px rgba(0,0,0,.26) }

/* --------------------------- Tables (nice) ------------------------------ */
.table{ width:100%; border-collapse:collapse; background:#fff; border-radius:var(--radius-m); overflow:hidden; box-shadow: var(--shadow-m); }
.table th, .table td{ padding:10px 12px; border-bottom:1px dashed var(--line); text-align:left; }
.table th{ background:linear-gradient(90deg, rgba(43,177,255,.1), rgba(255,99,165,.1)); font-weight:800; color:var(--ink); }
.table tr:last-child td{ border-bottom:none; }

/* --------------------------- Stats ------------------------------------- */
.stat{ text-align:center; padding:14px 10px; }
.stat .num{ font-size:34px; font-weight:800; }
.stat .lbl{ opacity:.75; font-size:14px; }
@media (max-width:640px){ .stat .num{ font-size:28px; } }

/* --------------------------- Animations -------------------------------- */
@keyframes fade{ from{opacity:0; transform: translateY(8px);} to{opacity:1; transform:none;} }
@keyframes floaty{ 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-6px) } }
@keyframes spin{ to{ transform: rotate(360deg) } }
@keyframes shimmer{ 0%{ transform: translateX(-100%)} 100%{ transform: translateX(100%)} }
@keyframes agriBand{ to{ background-position:100% 0 } }
@keyframes footerBand{ to{ background-position:100% 0 } }
@keyframes pulse{ 0%{box-shadow:0 0 0 0 rgba(43,177,255,.35)} 70%{box-shadow:0 0 0 18px rgba(43,177,255,0)} 100%{box-shadow:0 0 0 0 rgba(43,177,255,0)} }

/* --------------------------- W3.css polish ------------------------------ */
.w3-button.w3-white.w3-border{ border-color: var(--line) !important; }
.w3-badge, .w3-badge-neo{
  background:linear-gradient(90deg, var(--blue), var(--pink));
  color:#fff !important; border-radius:999px; padding:6px 10px;
}

/* --------------------------- Helpers for Pages -------------------------- */
/* Index hero container */
.hero-wrap{ position:relative; overflow:hidden; border-radius: var(--radius-xl); }
.soft-shadow{ box-shadow: var(--shadow-m); }
.glow-ring{ position:relative; }
.glow-ring::after{
  content:""; position:absolute; inset:-2px; border-radius:inherit; z-index:-1;
  background: conic-gradient(from 0deg, var(--blue), var(--pink), var(--green), var(--red), var(--teal), var(--blue));
  filter: blur(28px); opacity:.25;
}

/* Mini badges */
.badge-mix{
  background:linear-gradient(90deg, var(--blue), var(--pink), var(--green), var(--red), var(--teal));
  color:#fff; border-radius:999px; padding:4px 8px; font-size:12px; font-weight:800;
}

/* --------------------------- Media Queries ------------------------------ */
@media (max-width: 1200px){
  :root{ --container: 1060px; }
}
@media (max-width: 1060px){
  :root{ --container: 940px; }
}
@media (max-width: 960px){
  :root{ --container: 860px; }
}
@media (max-width: 760px){
  :root{ --container: 680px; }
}
@media (max-width: 560px){
  :root{ --container: 100%; }
}