/* ===========================================================
   EcoAds — base styles (leboncoin/craigslist inspired, green theme)
   =========================================================== */
:root {
  --green-900: #14532d;
  --green-700: #1f7a4d;
  --green-600: #2e9563;
  --green-500: #3cb371;
  --green-100: #e6f4ea;
  --accent-500: #2f9e44;
  --accent-600: #1f7a33;
  --ink: #1c2a24;
  --gray-700: #4b5a54;
  --gray-500: #7c8c85;
  --gray-300: #d7e2dc;
  --gray-100: #f4f8f6;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(20, 60, 40, 0.08), 0 1px 2px rgba(20, 60, 40, 0.06);
  --shadow-hover: 0 8px 20px rgba(20, 60, 40, 0.14);
  --max-width: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--gray-100);
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0 0 .5rem; line-height: 1.25; }
p { margin: 0 0 .75rem; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--green-700); color: #fff; padding: .5rem 1rem; z-index: 999;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons & form basics ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .55rem 1.1rem; border-radius: 999px; font-weight: 600; font-size: .9rem;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap; transition: transform .1s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent-500); color: #fff; }
.btn-primary:hover { background: var(--accent-600); }
.btn-outline { background: transparent; border-color: var(--gray-300); color: var(--green-900); }
.btn-outline:hover { border-color: var(--green-600); }
.btn-green { background: var(--green-700); color: #fff; }
.btn-green:hover { background: var(--green-900); }
.btn-danger { background: #fff; color: #b3261e; border-color: #f2c6c2; }
.btn-danger:hover { background: #fdecea; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

input[type=text], input[type=email], input[type=tel], input[type=number], input[type=password],
select, textarea {
  font: inherit; padding: .6rem .75rem; border: 1px solid var(--gray-300); border-radius: 8px; background: #fff; color: var(--ink);
  width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--green-500); outline-offset: 1px; }
label { font-weight: 600; font-size: .9rem; display: block; margin-bottom: .3rem; }
.field { margin-bottom: 1rem; }
.field small { color: var(--gray-500); font-weight: 400; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ---------- Header ---------- */
.site-header { background: var(--white); box-shadow: var(--shadow); position: sticky; top: 0; z-index: 100; }
.brand-lockup { display: flex; align-items: center; gap: .65rem; flex-shrink: 0; padding-right: .65rem; border-right: 1px solid var(--gray-300); }
.m2m-mark-link { display: inline-flex; align-items: center; }
.m2m-mark-img { display: block; height: 34px; width: auto; max-width: 180px; object-fit: contain; }
.topbar-inner {
  display: flex; align-items: center; gap: 1rem; padding: .75rem 1.25rem; flex-wrap: nowrap;
}
.logo { font-weight: 800; font-size: 1.3rem; color: var(--green-900); flex-shrink: 0; }
.logo span b { color: var(--accent-500); }

.search-bar { display: flex; flex: 1; min-width: 0; border: 1px solid var(--gray-300); border-radius: 999px; overflow: hidden; }
.search-bar input, .search-bar select { border: none; border-left: 1px solid var(--gray-300); border-radius: 0; }
.search-bar input { flex: 2; min-width: 0; border-left: none; }
.search-bar select { flex: 1; min-width: 0; }
.search-bar button { border: none; background: var(--green-700); color: #fff; padding: 0 1rem; cursor: pointer; }
.search-bar button:hover { background: var(--green-900); }

.topbar-actions { display: flex; align-items: center; gap: .6rem; flex-shrink: 0; }
.green-points { font-weight: 700; color: var(--green-700); background: var(--green-100); padding: .4rem .7rem; border-radius: 999px; font-size: .85rem; }
.nav-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; }

.category-nav { background: var(--green-900); }
.category-nav-inner { display: flex; gap: 1.25rem; overflow-x: auto; padding: .6rem 1.25rem; scrollbar-width: thin; }
.category-nav a { color: #d9ecdf; white-space: nowrap; font-size: .9rem; padding: .3rem .2rem; border-bottom: 2px solid transparent; }
.category-nav a:hover, .category-nav a.active { color: #fff; border-color: var(--accent-500); }
.category-nav a.eco-link { margin-left: auto; color: #b7f0c9; font-weight: 700; }

.flash { padding: .75rem 0; }
.flash .container { background: var(--green-100); color: var(--green-900); border-radius: 8px; padding: .75rem 1rem; font-weight: 600; }
.flash-error .container { background: #fdecea; color: #7a271a; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(135deg, var(--green-700), var(--green-900)); color: #fff; padding: 3rem 0 2.5rem; }
.hero h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
.hero p { color: #d9ecdf; max-width: 42rem; }
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.25rem; }

.eco-strip { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.eco-strip span { background: rgba(255,255,255,.12); padding: .35rem .8rem; border-radius: 999px; font-size: .85rem; }

/* ---------- Category grid (homepage) ---------- */
.section { padding: 2.25rem 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1rem; flex-wrap: wrap; gap: .5rem; }
.section-head a { color: var(--green-700); font-weight: 700; font-size: .9rem; }

.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; }
.category-tile {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem 1rem; text-align: center;
  transition: box-shadow .15s ease, transform .15s ease;
}
.category-tile:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.category-tile .icon { font-size: 1.8rem; display: block; margin-bottom: .4rem; }
.category-tile .name { font-weight: 700; font-size: .92rem; }
.category-tile .count { color: var(--gray-500); font-size: .8rem; }

/* ---------- Listing cards / grid ---------- */
.listing-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1.25rem; }
.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: box-shadow .15s ease, transform .15s ease; }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }

.card-media { position: relative; aspect-ratio: 4 / 3; background: var(--gray-100); }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.badge { position: absolute; top: .5rem; left: .5rem; background: var(--green-700); color: #fff; font-size: .72rem; font-weight: 700; padding: .25rem .55rem; border-radius: 999px; }
.badge-eco { background: var(--green-600); }

.card-body { padding: .8rem .9rem 1rem; }
.card-price { font-weight: 800; color: var(--green-900); font-size: 1.05rem; }
.card-title { font-weight: 600; font-size: .92rem; margin: .2rem 0; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.card-meta { color: var(--gray-500); font-size: .78rem; }
.card-co2 { margin-top: .4rem; font-size: .76rem; color: var(--green-700); font-weight: 700; }

/* body.eco-mode: hide heavy images to save bandwidth/energy */
body.eco-mode .card-media img { display: none; }
body.eco-mode .card-media::after { content: "🍃 Eco mode: image hidden to save data"; display: flex; align-items: center; justify-content: center; height: 100%; font-size: .72rem; text-align: center; padding: .5rem; color: var(--gray-500); }

/* ---------- Filters sidebar (browse page) ---------- */
.browse-layout { display: grid; grid-template-columns: 260px 1fr; gap: 1.5rem; align-items: start; }
.filters { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; position: sticky; top: 90px; }
.filters h3 { font-size: 1rem; }
.filters .field { margin-bottom: .9rem; }
.checkbox-row { display: flex; align-items: center; gap: .5rem; font-weight: 400; }
.checkbox-row input { width: auto; }
.results-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: .5rem; }
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--gray-500); background: #fff; border-radius: var(--radius); }

/* ---------- Pagination ---------- */
.pagination { display: flex; justify-content: center; gap: .4rem; margin-top: 2rem; flex-wrap: wrap; }
.pagination a, .pagination span { padding: .4rem .8rem; border-radius: 8px; background: #fff; border: 1px solid var(--gray-300); font-size: .9rem; }
.pagination .current { background: var(--green-700); color: #fff; border-color: var(--green-700); }

/* ---------- Listing detail ---------- */
.listing-detail { display: grid; grid-template-columns: 1.6fr 1fr; gap: 2rem; align-items: start; }
.gallery-main { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--gray-100); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 2;
  width: 38px; height: 38px; border-radius: 50%; border: none; background: rgba(20, 30, 25, .55); color: #fff;
  font-size: 1.4rem; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .15s ease;
}
.gallery-nav:hover { background: rgba(20, 30, 25, .8); }
.gallery-prev { left: .6rem; }
.gallery-next { right: .6rem; }
.gallery-counter {
  position: absolute; bottom: .6rem; right: .6rem; z-index: 2;
  background: rgba(20, 30, 25, .6); color: #fff; font-size: .75rem; font-weight: 600;
  padding: .2rem .55rem; border-radius: 999px;
}
.gallery-thumbs { display: flex; gap: .5rem; margin-top: .6rem; flex-wrap: wrap; }
.gallery-thumbs img { width: 70px; height: 70px; object-fit: cover; border-radius: 8px; cursor: pointer; border: 2px solid transparent; }
.gallery-thumbs img.active { border-color: var(--green-600); }

.detail-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; }
.detail-price { font-size: 1.8rem; font-weight: 800; color: var(--green-900); }
.detail-meta { color: var(--gray-500); font-size: .88rem; margin-bottom: 1rem; }
.eco-tag-list { display: flex; flex-wrap: wrap; gap: .4rem; margin: .75rem 0; }
.eco-tag { background: var(--green-100); color: var(--green-900); font-size: .78rem; font-weight: 600; padding: .3rem .6rem; border-radius: 999px; }
.co2-callout { background: var(--green-100); border-radius: 10px; padding: .8rem 1rem; margin-top: 1rem; font-weight: 600; color: var(--green-900); }
.contact-card { margin-top: 1.25rem; }
.contact-reveal { background: var(--gray-100); border-radius: 10px; padding: 1rem; margin-top: .75rem; }

/* ---------- Forms (post ad) ---------- */
.form-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.75rem; max-width: 720px; margin: 0 auto; }
.eco-tag-picker { display: flex; flex-wrap: wrap; gap: .5rem; }
.eco-tag-picker label { display: flex; align-items: center; gap: .4rem; font-weight: 400; background: var(--gray-100); padding: .4rem .7rem; border-radius: 999px; cursor: pointer; border: 1px solid var(--gray-300); }
.eco-tag-picker input { width: auto; }
.eco-tag-picker input:checked + span { font-weight: 700; }
.file-drop { border: 2px dashed var(--gray-300); border-radius: var(--radius); padding: 1.25rem; text-align: center; color: var(--gray-500); }
.preview-strip { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: .75rem; }
.preview-strip img { width: 80px; height: 80px; object-fit: cover; border-radius: 8px; }
.preview-item { position: relative; cursor: pointer; border-radius: 8px; overflow: hidden; border: 2px solid transparent; }
.preview-item img { width: 80px; height: 80px; object-fit: cover; display: block; border-radius: 6px; }
.preview-item.is-primary { border-color: var(--green-600); }
.preview-badge {
  position: absolute; left: 0; right: 0; bottom: 0; text-align: center;
  background: rgba(20, 30, 25, .65); color: #fff; font-size: .62rem; font-weight: 700; padding: .15rem 0;
}
.preview-item.is-primary .preview-badge { background: var(--green-700); }
.photo-picker { display: flex; gap: .75rem; flex-wrap: wrap; }
.photo-picker-item { display: flex; flex-direction: column; align-items: center; gap: .35rem; font-size: .78rem; cursor: pointer; }
.photo-picker-item img { width: 90px; height: 90px; object-fit: cover; border-radius: 8px; border: 2px solid transparent; }
.photo-picker-item.is-primary img { border-color: var(--green-600); }
.photo-picker-item input { width: auto; }
.helper-banner { background: var(--green-100); border-radius: 10px; padding: .9rem 1rem; margin-bottom: 1.25rem; color: var(--green-900); font-size: .9rem; }

/* ---------- Eco tips page ---------- */
.tips-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.tip-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; }
.tip-card h3 { color: var(--green-900); font-size: 1rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--green-900); color: #d9ecdf; padding: 2.5rem 0 1rem; margin-top: 3rem; }
.site-footer h4 { color: #fff; font-size: .95rem; }
.site-footer a { color: #cfe7d6; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.5rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 1.5rem; padding-top: 1rem; font-size: .8rem; color: #a9c9b3; display: flex; justify-content: space-between; flex-wrap: wrap; gap: .4rem; }
.footer-bottom a { text-decoration: underline; }
.switch { display: inline-flex; align-items: center; gap: .5rem; cursor: pointer; }

#back-to-top {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 200;
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: var(--green-700); color: #fff; font-size: 1.2rem; line-height: 1;
  box-shadow: var(--shadow-hover); cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease, background .15s ease;
}
#back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
#back-to-top:hover { background: var(--green-900); }

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-2 { margin-top: 1rem; }
.stack { display: flex; flex-direction: column; gap: .75rem; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: .5rem; flex-wrap: wrap; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .browse-layout { grid-template-columns: 1fr; }
  .filters { position: static; }
  .listing-detail { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .topbar-inner { flex-wrap: wrap; }
  .search-bar { order: 3; width: 100%; flex-basis: 100%; }
  .nav-toggle { display: inline-block; }
  .btn-outline { display: none; }
  .category-nav { display: none; }
  .category-nav.open { display: block; }
  .field-row { grid-template-columns: 1fr; }
  .brand-lockup { gap: .4rem; padding-right: .4rem; }
  .m2m-mark-img { height: 26px; max-width: 130px; }
}