:root {
    --bg: #f4f7fb;
    --surface: #ffffff;
    --surface-soft: #eef4ff;
    --text: #0f172a;
    --muted: #64748b;
    --primary: #1d4ed8;
    --primary-dark: #0f3da8;
    --border: rgba(15, 23, 42, 0.08);
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --font-main: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: var(--font-main);
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(29, 78, 216, 0.12), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

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

button,
input {
    font: inherit;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 290px 1fr;
}

.sidebar {
    padding: 24px;
    background: linear-gradient(180deg, #0f172a 0%, #12214a 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.brand {
    display: flex;
    gap: 14px;
    align-items: center;
}

.brand__mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    display: grid;
    place-items: center;
    font-weight: 800;
    letter-spacing: 0.06em;
}

.brand__title {
    font-size: 1.05rem;
    font-weight: 700;
}

.brand__subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.92rem;
    margin-top: 2px;
}

.module-nav {
    display: grid;
    gap: 8px;
}

.module-nav__title {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 4px;
}

.module-nav__link {
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.9);
    transition: transform 0.2s ease, background 0.2s ease;
}

.module-nav__link:hover,
.module-nav__link.is-active {
    background: rgba(255, 255, 255, 0.14);
    transform: translateX(3px);
}

.page-shell {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 28px;
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(18px);
    background: rgba(244, 247, 251, 0.72);
    border-bottom: 1px solid var(--border);
}

.topbar__links {
    display: flex;
    gap: 18px;
    color: var(--muted);
    flex-wrap: wrap;
}

.topbar__links a:hover {
    color: var(--primary);
}

.auth-button,
.auth-form__submit,
.auth-modal__social button,
.auth-modal__tabs button {
    border: 0;
    border-radius: 999px;
    cursor: pointer;
}

.auth-button,
.auth-form__submit {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 12px 18px;
    box-shadow: 0 14px 30px rgba(29, 78, 216, 0.24);
}

.content {
    padding: 28px;
}

.hero,
.section,
.panel {
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius-xl);
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
    gap: 22px;
    padding: 30px;
}

.hero__eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    font-size: 0.78rem;
}

.hero h1,
.section h2,
.feature-card h3,
.hero__card h2 {
    margin-top: 0;
}

.hero h1 {
    font-size: clamp(2.2rem, 4vw, 4.2rem);
    line-height: 1.02;
    margin-bottom: 16px;
}

.hero p,
.section p,
.feature-card p,
.hero__card li {
    color: var(--muted);
    line-height: 1.65;
}

.hero__card {
    padding: 22px;
    background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(29, 78, 216, 0.12);
}

.hero__card ul {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 10px;
}

.section {
    margin-top: 22px;
    padding: 26px 30px 30px;
}

.section__header {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: end;
    margin-bottom: 18px;
}

.section__header p {
    max-width: 600px;
    margin: 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.feature-card h3 {
    margin-bottom: 10px;
}

.module-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.module-badges span {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(29, 78, 216, 0.08);
    color: var(--primary-dark);
    font-size: 0.9rem;
}

.catalog-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 18px;
}

.catalog-sidebar {
    display: grid;
    gap: 10px;
    align-self: start;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
}

.catalog-sidebar__title,
.catalog-toolbar__label {
    font-weight: 700;
    color: var(--text);
}

.catalog-sidebar__title {
    margin-bottom: 4px;
}

.catalog-item,
.catalog-card {
    display: block;
    background: #f8fbff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 14px 16px;
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.catalog-item {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
}

.brand-media {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(29, 78, 216, 0.18);
    background: #fff;
    position: relative;
    display: block;
}

.brand-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.12), rgba(59, 130, 246, 0.22));
    color: var(--primary-dark);
    font-weight: 800;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
}

.brand-media .brand-icon {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
}

.brand-logo:not([src]),
.brand-logo[src=""] {
    display: none;
}

.brand-logo:not([src]) + .brand-icon,
.brand-logo[src=""] + .brand-icon {
    opacity: 1;
}

.catalog-item {
    color: var(--text);
}

.catalog-item strong,
.catalog-card h3 {
    display: block;
    margin-bottom: 6px;
}

.catalog-item span,
.catalog-card p,
.catalog-card span,
.catalog-toolbar__hint,
.trim-card li {
    color: var(--muted);
}

.catalog-item.is-active,
.catalog-card.is-active {
    border-color: rgba(29, 78, 216, 0.35);
    box-shadow: 0 12px 30px rgba(29, 78, 216, 0.12);
    transform: translateY(-1px);
}

.catalog-content {
    min-width: 0;
}

.vehicle-catalog.is-loading .catalog-content,
.vehicle-catalog.is-loading .catalog-sidebar {
    opacity: 0.7;
    transition: opacity 0.15s ease;
}

.catalog-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: end;
    margin-bottom: 14px;
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.generation-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.generation-card {
    display: grid;
    gap: 8px;
    background: #f8fbff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 14px 16px;
    color: var(--text);
}

.generation-card span {
    color: var(--muted);
}

.generation-card.is-active {
    border-color: rgba(29, 78, 216, 0.35);
    box-shadow: 0 12px 30px rgba(29, 78, 216, 0.12);
}

.detail-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.detail-tab {
    padding: 12px 16px;
    border-radius: 999px;
    background: #eef4ff;
    color: var(--text);
    border: 1px solid transparent;
}

.detail-tab.is-active {
    background: var(--primary);
    color: #fff;
}

.detail-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.generation-media {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    margin-bottom: 14px;
    background: #f8fbff;
}

.generation-media img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 6;
    object-fit: cover;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.admin-form {
    display: grid;
    gap: 10px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
}

.admin-form h3 {
    margin: 0 0 8px;
}

.admin-ai-box {
    display: grid;
    gap: 12px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    margin-bottom: 16px;
}

.admin-ai-box h3 {
    margin: 0;
}

.admin-ai-box p {
    margin: 0;
    color: var(--muted);
}

.admin-ai-box textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    min-height: 110px;
    resize: vertical;
}

.admin-ai-box small {
    color: var(--muted);
}

.admin-form label {
    display: grid;
    gap: 6px;
    color: var(--muted);
    font-size: 0.92rem;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
    background: #fff;
}

.admin-form textarea {
    min-height: 88px;
    resize: vertical;
}

.admin-check {
    display: flex !important;
    align-items: center;
    gap: 8px;
}

.admin-check input {
    width: auto;
}

.admin-flash {
    border-radius: 12px;
    padding: 12px 14px;
    margin-bottom: 14px;
}

.admin-flash--ok {
    border: 1px solid rgba(22, 163, 74, 0.25);
    background: rgba(22, 163, 74, 0.08);
    color: #166534;
}

.admin-flash--error {
    border: 1px solid rgba(220, 38, 38, 0.25);
    background: rgba(220, 38, 38, 0.08);
    color: #991b1b;
}

.admin-table-wrap {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    border-bottom: 1px solid var(--border);
    text-align: left;
    padding: 10px 8px;
    font-size: 0.92rem;
}

.admin-table th {
    color: var(--text);
}

.admin-table td {
    color: var(--muted);
    vertical-align: top;
}

.admin-table input,
.admin-table select,
.admin-table textarea {
    width: 100%;
    margin-bottom: 6px;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 10px;
    background: #fff;
    color: var(--text);
}

.admin-actions {
    min-width: 180px;
}

.admin-btn {
    border: 0;
    border-radius: 10px;
    padding: 8px 10px;
    cursor: pointer;
    background: #e8f0ff;
    color: #1e3a8a;
    width: 100%;
    margin-bottom: 6px;
}

.admin-btn--danger {
    background: #fee2e2;
    color: #991b1b;
}

.admin-pager {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.admin-pager .admin-btn {
    width: auto;
    margin-bottom: 0;
    text-decoration: none;
}

.catalog-card {
    color: var(--text);
}

.trim-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.trim-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
}

.trim-card h3 {
    margin-top: 0;
}

.trim-card ul {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 8px;
}

.auth-modal {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: grid;
    place-items: center;
}

.auth-modal[hidden] {
    display: none !important;
}

.auth-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.56);
}

.auth-modal__dialog {
    position: relative;
    z-index: 1;
    width: min(100% - 32px, 520px);
    background: #fff;
    border-radius: 24px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.auth-modal__close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 38px;
    height: 38px;
    background: #eef2ff;
    color: var(--text);
}

.auth-modal__tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 22px;
}

.auth-modal__tabs button,
.auth-modal__social button {
    padding: 12px 16px;
    background: #eef4ff;
    color: var(--text);
}

.auth-modal__tabs button.is-active {
    background: var(--primary);
    color: #fff;
}

.auth-form {
    display: grid;
    gap: 14px;
}

.auth-form label {
    display: grid;
    gap: 8px;
    color: var(--muted);
    font-size: 0.95rem;
}

.auth-form input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    outline: none;
    background: #fff;
}

.auth-form input:focus {
    border-color: rgba(29, 78, 216, 0.35);
    box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.08);
}

.auth-form__submit {
    width: 100%;
    margin-top: 4px;
}

.auth-modal__social {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 16px;
}

@media (max-width: 1080px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-bottom-left-radius: 28px;
        border-bottom-right-radius: 28px;
    }

    .hero,
    .feature-grid,
    .catalog-layout,
    .catalog-grid,
    .trim-list,
    .generation-list,
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .topbar {
        padding: 16px 18px;
        flex-direction: column;
        align-items: flex-start;
    }

    .content {
        padding: 18px;
    }

    .section {
        padding: 20px;
    }
}