:root {
    --bg: #0b1021;
    --panel: #0f162f;
    --muted: #9aa4b2;
    --text: #e6e9ef;
    --primary: #5b8cff;
    --primary-900: #3157d8;
    --accent: #7ef5d2;
    --ring: rgba(91, 140, 255, 0.35);
    --card: #121935;
    --border: #1e2a4a;
    --shadow: 0 20px 40px rgba(8, 12, 24, 0.45);
    --radius: 14px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(126, 245, 210, 0.08), transparent 60%),
        radial-gradient(900px 600px at 100% 10%, rgba(91, 140, 255, 0.12), transparent 70%),
        linear-gradient(180deg, #0a0f20 0%, #0b1021 100%);
    color: var(--text);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(1.2) blur(8px);
    background: rgba(11, 16, 33, 0.7);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 16px;
}

.logo {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.2px;
    color: var(--text);
    background: linear-gradient(90deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.search-form {
    flex: 1;
    display: flex;
    gap: 8px;
}

.search-form input[type="text"] {
    flex: 1;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    outline: none;
    transition: border-color .2s, box-shadow .2s;
}
.search-form input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--ring);
}

.search-form button {
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid var(--primary-900);
    background: linear-gradient(180deg, var(--primary), var(--primary-900));
    color: #ffffff;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(49, 87, 216, 0.25);
    transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
}
.search-form button:hover {
    transform: translateY(-1px);
    filter: brightness(1.08);
}

.nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav a {
    font-size: 14px;
    color: var(--muted);
    padding: 6px 8px;
    border-radius: 8px;
    transition: color .2s, background-color .2s;
}
.nav a:hover {
    color: var(--text);
    background: rgba(126, 245, 210, 0.08);
}

.nav-user {
    font-size: 14px;
    color: var(--muted);
}

.btn-primary {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--primary), var(--primary-900));
    color: #ffffff;
    border: 1px solid var(--primary-900);
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(49, 87, 216, 0.25);
    transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
}
.btn-primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.08);
}

.btn-primary.full-width {
    width: 100%;
    text-align: center;
}

.categories-bar {
    background: linear-gradient(180deg, rgba(15, 22, 47, 0.8), rgba(15, 22, 47, 0.6));
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.categories-inner {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 8px 16px;
    scroll-snap-type: x mandatory;
}

.category-chip {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 13px;
    white-space: nowrap;
    color: var(--muted);
    background: var(--panel);
    transition: border-color .2s, color .2s, transform .15s ease;
    scroll-snap-align: start;
}
.category-chip:hover {
    border-color: var(--primary);
    color: var(--text);
    transform: translateY(-1px);
}

.category-chip.active {
    background: linear-gradient(180deg, var(--primary), var(--primary-900));
    color: #ffffff;
    border-color: var(--primary-900);
}

.site-main {
    padding: 16px 0 48px;
}

.filters {
    margin-bottom: 16px;
}

.filters-form {
    background: var(--card);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.filters-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.filters-row > div {
    flex: 1;
    min-width: 180px;
}

label {
    display: block;
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 6px;
    letter-spacing: .2px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    font-size: 14px;
    background: var(--panel);
    color: var(--text);
    outline: none;
    transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--ring);
}

textarea {
    min-height: 120px;
}

.filters-actions {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.filters-actions button {
    padding: 10px 16px;
    border-radius: 10px;
    border: 1px solid var(--primary-900);
    background: linear-gradient(180deg, var(--primary), var(--primary-900));
    color: #ffffff;
    cursor: pointer;
}

.link-reset {
    font-size: 13px;
    color: var(--muted);
}

.listings-grid .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 18px;
}

.listing-card {
    background: linear-gradient(180deg, #121935, #0f162f);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color .2s ease;
    box-shadow: var(--shadow);
}

.listing-card:hover {
    box-shadow: 0 30px 60px rgba(8, 12, 24, 0.55);
    transform: translateY(-2px);
    border-color: var(--primary);
}

.listing-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.placeholder-image {
    width: 100%;
    height: 200px;
    background:
        radial-gradient(400px 200px at 10% 20%, rgba(126, 245, 210, 0.08), transparent 60%),
        repeating-linear-gradient(45deg, #182342, #182342 10px, #14203b 10px, #14203b 20px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-size: 13px;
}

.placeholder-image.large {
    height: 340px;
}

.listing-body {
    padding: 12px 14px 14px;
}

.listing-body h3 {
    font-size: 16px;
    margin-bottom: 6px;
    color: var(--text);
}

.listing-meta {
    font-size: 12px;
    color: var(--muted);
    display: flex;
    gap: 8px;
    margin-bottom: 4px;
}

.listing-price {
    font-weight: 700;
    color: var(--accent);
}

.listing-detail {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    gap: 24px;
}

.listing-gallery {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 12px;
    box-shadow: var(--shadow);
}

.gallery-main img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    border-radius: 12px;
}

.gallery-thumbs {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.gallery-thumbs img {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform .15s ease, border-color .2s ease;
}
.gallery-thumbs img:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.listing-info {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 16px;
    box-shadow: var(--shadow);
}

.listing-info h1 {
    font-size: 22px;
    margin-bottom: 8px;
}

.listing-price-main {
    font-size: 20px;
    font-weight: 800;
    margin: 8px 0;
    color: var(--accent);
}

.listing-fee {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 8px;
}

.listing-actions {
    margin: 12px 0;
}

.listing-description h2 {
    font-size: 16px;
    margin-bottom: 6px;
}

.listing-description p {
    font-size: 14px;
    line-height: 1.6;
}

.auth-container {
    display: flex;
    justify-content: center;
    padding: 32px 16px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 24px 20px;
    box-shadow: var(--shadow);
}

.auth-card h1 {
    font-size: 22px;
    margin-bottom: 16px;
}

.auth-card form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.auth-switch {
    margin-top: 16px;
    font-size: 13px;
}

.auth-switch a {
    color: var(--primary);
}

.alert {
    background-color: rgba(185, 28, 28, 0.18);
    border: 1px solid rgba(185, 28, 28, 0.35);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 13px;
    color: #ffb2b2;
    margin-bottom: 12px;
}

.listing-form {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow);
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-actions {
    margin-top: 8px;
}

.threads-list {
    list-style: none;
    margin-top: 12px;
}

.thread-item {
    background: var(--card);
    border-radius: var(--radius);
    padding: 12px 14px;
    border: 1px solid var(--border);
    margin-bottom: 8px;
    box-shadow: var(--shadow);
}

.thread-item h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.thread-container {
    max-width: 860px;
}

.messages-box {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 12px;
    max-height: 460px;
    overflow-y: auto;
    margin-bottom: 12px;
    box-shadow: var(--shadow);
}

.message {
    margin-bottom: 10px;
    display: flex;
}

.message.mine .message-body {
    background: linear-gradient(180deg, var(--primary), var(--primary-900));
    color: #ffffff;
    margin-left: auto;
}

.message-meta {
    font-size: 11px;
    color: var(--muted);
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
}

.message-body {
    max-width: 70%;
    background: #182342;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 10px 12px;
}

.message-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 12px;
    box-shadow: var(--shadow);
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 12px;
}

.admin-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 14px 16px;
    box-shadow: var(--shadow);
}

.admin-card h2 {
    font-size: 16px;
    margin-bottom: 4px;
}

.admin-card p {
    font-size: 20px;
    font-weight: 800;
}

.admin-links {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.admin-links a {
    font-size: 14px;
    color: var(--primary);
}

.admin-table {
    width: 100%;
    margin-top: 16px;
    border-collapse: collapse;
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.admin-table th,
.admin-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    color: var(--text);
}

.admin-table th {
    text-align: left;
    background: #182342;
}

.category-form {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 12px;
    margin-bottom: 16px;
    display: flex;
    gap: 8px;
    box-shadow: var(--shadow);
}

.category-form input[type="text"] {
    flex: 1;
}

.site-footer {
    border-top: 1px solid var(--border);
    background: rgba(11, 16, 33, 0.7);
    backdrop-filter: blur(8px);
}

.footer-inner {
    padding: 12px 16px;
    font-size: 13px;
    color: var(--muted);
    text-align: center;
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        gap: 8px;
    }

    .nav {
        width: 100%;
        justify-content: flex-end;
        flex-wrap: wrap;
    }

    .listing-detail {
        grid-template-columns: 1fr;
    }

    .messages-box {
        max-height: 360px;
    }
}