/* ============================================================
   Moving Sale — Main Stylesheet
   Clean, minimal, mobile-first design
   ============================================================ */

/* -- Variables ------------------------------------------------ */
:root {
    --color-primary:     #2563eb;
    --color-primary-dk:  #1d4ed8;
    --color-success:     #16a34a;
    --color-warning:     #d97706;
    --color-danger:      #dc2626;
    --color-sold:        #6b7280;
    --color-pending:     #d97706;
    --color-available:   #16a34a;
    --color-text:        #111827;
    --color-text-muted:  #6b7280;
    --color-border:      #e5e7eb;
    --color-bg:          #f9fafb;
    --color-card:        #ffffff;
    --color-whatsapp:    #25d366;
    --color-whatsapp-dk: #128c7e;

    --radius:       8px;
    --radius-sm:    4px;
    --shadow:       0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
    --shadow-md:    0 4px 6px rgba(0,0,0,.1), 0 2px 4px rgba(0,0,0,.06);
    --font:         system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --transition:   150ms ease;
    --max-width:    1200px;
}

/* -- Reset ---------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0 0 .5rem; line-height: 1.25; }
p { margin: 0 0 1rem; }
textarea, input, select, button { font: inherit; }

/* -- Layout --------------------------------------------------- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* -- Header --------------------------------------------------- */
.site-header {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: .75rem;
    padding-bottom: .75rem;
    gap: 1rem;
    flex-wrap: wrap;
}
.site-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    white-space: nowrap;
}
.admin-nav {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap;
}
.admin-nav a { font-size: .9rem; }

/* -- Footer --------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    margin-top: 3rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: .875rem;
}

/* -- Main content -------------------------------------------- */
main.container { padding-top: 1.5rem; padding-bottom: 2rem; }

/* -- Page section -------------------------------------------- */
.page-section { margin-bottom: 2rem; }
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.page-header h1 { margin: 0; }

/* -- Buttons -------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .55rem 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: .95rem;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1.4;
    background: transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary  { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dk); border-color: var(--color-primary-dk); }
.btn-outline  { border-color: var(--color-border); color: var(--color-text); background: var(--color-card); }
.btn-outline:hover { background: var(--color-bg); }
.btn-ghost    { color: var(--color-primary); }
.btn-ghost:hover { background: var(--color-bg); }
.btn-danger   { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.btn-danger:hover { opacity: .9; }
.btn-sm       { padding: .35rem .75rem; font-size: .85rem; }
.btn-lg       { padding: .75rem 1.5rem; font-size: 1.05rem; }
.btn-full     { width: 100%; justify-content: center; }
.btn-upload   { cursor: pointer; }
.btn-whatsapp {
    background: var(--color-whatsapp);
    color: #fff;
    border-color: var(--color-whatsapp);
    padding: .75rem 1.5rem;
    font-size: 1.05rem;
    border-radius: var(--radius);
}
.btn-whatsapp:hover { background: var(--color-whatsapp-dk); border-color: var(--color-whatsapp-dk); }
.inline-form { display: inline; margin: 0; padding: 0; }

/* -- Alerts --------------------------------------------------- */
.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: .95rem;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef9c3; color: #92400e; border: 1px solid #fde68a; }

/* -- Status badges -------------------------------------------- */
.status-badge {
    display: inline-block;
    padding: .15rem .5rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.status-badge--available { background: #dcfce7; color: #166534; }
.status-badge--pending   { background: #fef9c3; color: #92400e; }
.status-badge--sold      { background: #f3f4f6; color: #6b7280; }
.status-badge--lg        { padding: .3rem .8rem; font-size: .85rem; }

/* -- Filter bar (public) ------------------------------------- */
.filter-bar {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}
.filter-link {
    padding: .4rem .9rem;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    font-size: .875rem;
    color: var(--color-text);
    background: var(--color-card);
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition);
}
.filter-link:hover { background: var(--color-bg); text-decoration: none; }
.filter-link.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* -- Item grid (public) -------------------------------------- */
.item-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
}
.item-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), transform var(--transition);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}
.item-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); text-decoration: none; }
.item-card--sold { opacity: .6; }
.item-card__image {
    position: relative;
    aspect-ratio: 4/3;
    background: #f3f4f6;
    overflow: hidden;
}
.item-card__image img { width: 100%; height: 100%; object-fit: cover; }
.item-card__no-image {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 3rem;
    color: var(--color-text-muted);
}
.item-card__image .status-badge {
    position: absolute;
    top: .5rem;
    right: .5rem;
}
.item-card__body { padding: .75rem; flex: 1; }
.item-card__title { font-size: 1rem; font-weight: 600; margin-bottom: .25rem; }
.item-card__price { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin: 0; }
.item-card__meta  { font-size: .8rem; color: var(--color-text-muted); margin: .25rem 0 0; }

/* -- Item detail (public) ------------------------------------ */
.item-detail { max-width: 960px; margin: 0 auto; }
.breadcrumb { margin-bottom: 1rem; font-size: .9rem; }
.item-detail__layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
@media (min-width: 640px) {
    .item-detail__layout { grid-template-columns: 1fr 1fr; }
}
.gallery-main img {
    width: 100%;
    border-radius: var(--radius);
    max-height: 450px;
    object-fit: contain;
    background: #f3f4f6;
}
.gallery-thumbs {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    margin-top: .75rem;
}
.gallery-thumb {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    opacity: .75;
    transition: opacity var(--transition), border-color var(--transition);
}
.gallery-thumb:hover, .gallery-thumb.active { opacity: 1; border-color: var(--color-primary); }
.gallery-placeholder {
    background: #f3f4f6;
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
    font-size: 3rem;
    color: var(--color-text-muted);
}
.item-detail__title { font-size: 1.5rem; margin-bottom: .5rem; }
.item-detail__price-row {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: 1rem;
}
.item-detail__price { font-size: 1.75rem; font-weight: 700; color: var(--color-primary); }
.item-detail__section { margin-bottom: 1.25rem; }
.item-detail__section h3 { font-size: 1rem; font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: .25rem; }
.item-detail__meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.item-detail__meta-grid div { display: flex; flex-direction: column; }
.item-detail__meta-grid strong { font-size: .8rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .04em; }
.item-detail__cta { margin-top: 1.5rem; }

/* -- Auth page ----------------------------------------------- */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 3rem;
}
.auth-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-md);
}
.auth-card h1 { text-align: center; margin-bottom: 1.5rem; }
.auth-form { display: flex; flex-direction: column; gap: 1rem; }
.auth-back { text-align: center; margin-top: 1rem; font-size: .875rem; }

/* -- Forms ---------------------------------------------------- */
.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group--full { grid-column: 1 / -1; }
.form-group label { font-size: .9rem; font-weight: 500; }
.required { color: var(--color-danger); }
.form-hint { font-size: .8rem; color: var(--color-text-muted); }
input[type="text"],
input[type="password"],
input[type="number"],
textarea,
select {
    padding: .55rem .75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-card);
    width: 100%;
    transition: border-color var(--transition);
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
textarea { resize: vertical; }
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
@media (max-width: 540px) {
    .form-grid { grid-template-columns: 1fr; }
    .form-group--full { grid-column: auto; }
}
.form-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}
.item-form { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.5rem; }
.file-input-hidden { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.file-count { font-size: .85rem; color: var(--color-text-muted); }
.upload-controls { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: .75rem; }

/* -- Admin table --------------------------------------------- */
.admin-table-wrapper { overflow-x: auto; }
.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.admin-table th {
    background: #f3f4f6;
    text-align: left;
    padding: .65rem 1rem;
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}
.admin-table td {
    padding: .75rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--color-border);
    font-size: .9rem;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr.row--sold td { opacity: .6; }
.td-thumb { width: 60px; }
.td-actions {
    display: flex;
    align-items: center;
    gap: .4rem;
    flex-wrap: wrap;
}
.admin-thumb {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    background: #f3f4f6;
}
.admin-thumb--empty {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}
.text-muted { color: var(--color-text-muted); }

/* -- Dropdown ----------------------------------------------- */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 200;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    min-width: 150px;
    padding: .25rem 0;
    margin-top: 2px;
}
.dropdown-item {
    display: block;
    width: 100%;
    padding: .45rem .9rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: .9rem;
    color: var(--color-text);
    transition: background var(--transition);
}
.dropdown-item:hover { background: var(--color-bg); }

/* -- Images section ------------------------------------------ */
.images-section {
    margin-top: 2rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}
.images-section h2 { margin-bottom: .25rem; }
.image-grid {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin: 1rem 0;
}
.image-card {
    position: relative;
    background: #f3f4f6;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    user-select: none;
}
.image-card.dragging { opacity: .5; border-style: dashed; }
.image-card__thumb { width: 120px; height: 120px; object-fit: cover; }
.image-card__actions {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,.55);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .25rem .4rem;
    opacity: 0;
    transition: opacity var(--transition);
}
.image-card:hover .image-card__actions { opacity: 1; }
.image-card__handle { color: #fff; cursor: grab; font-size: 1.25rem; }
.upload-section { margin-top: 1.5rem; border-top: 1px solid var(--color-border); padding-top: 1.5rem; }
.upload-section h3 { margin-bottom: .75rem; }

/* -- Error / empty states ------------------------------------ */
.empty-state {
    text-align: center;
    color: var(--color-text-muted);
    padding: 3rem 1rem;
    font-size: 1.05rem;
}
.error-page {
    text-align: center;
    padding: 4rem 1rem;
}
.error-page h1 { font-size: 2rem; margin-bottom: .5rem; }

/* -- Responsive tweaks --------------------------------------- */
@media (max-width: 640px) {
    .item-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
    .admin-table th:nth-child(1),
    .admin-table td:nth-child(1) { display: none; }
    .td-actions { flex-direction: column; align-items: flex-start; }
}
@media (min-width: 640px) {
    .item-detail__layout { align-items: start; }
}