:root {
    color-scheme: dark;
    --catalog-bg-start: #1a1a2e;
    --catalog-bg-mid: #16213e;
    --catalog-bg-end: #0f3460;
    --catalog-accent: #667eea;
    --catalog-accent-deep: #764ba2;
    --catalog-text: #ffffff;
    --catalog-muted: #b8c5d6;
    --catalog-card: rgba(255, 255, 255, 0.05);
    --catalog-surface: rgba(255, 255, 255, 0.1);
    --catalog-border: rgba(255, 255, 255, 0.1);
    --catalog-border-strong: rgba(255, 255, 255, 0.2);
    --catalog-focus: #a9b8ff;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    background: var(--catalog-bg-mid);
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
    background: linear-gradient(
        135deg,
        var(--catalog-bg-start) 0%,
        var(--catalog-bg-mid) 50%,
        var(--catalog-bg-end) 100%
    );
    background-attachment: fixed;
    color: var(--catalog-text);
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

button,
input {
    font: inherit;
}

button {
    letter-spacing: 0;
}

a {
    color: inherit;
}

[hidden] {
    display: none !important;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1000;
    padding: 9px 13px;
    border-radius: 6px;
    background: #ffffff;
    color: #16213e;
    font-weight: 700;
    text-decoration: none;
    transform: translateY(-150%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.catalog-page {
    min-height: 100vh;
}

.catalog-container {
    width: min(100% - 30px, 1320px);
    margin-inline: auto;
}

.catalog-hero {
    padding: 60px 0 40px;
    text-align: center;
}

.logo-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 0 0 20px;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0;
}

.logo-title span {
    background: linear-gradient(45deg, var(--catalog-accent) 0%, var(--catalog-accent-deep) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.logo-title svg {
    width: 0.9em;
    height: 0.9em;
    flex: 0 0 auto;
    color: var(--catalog-accent);
    fill: currentColor;
    stroke-width: 1.7;
}

.slogan {
    max-width: 600px;
    margin: 0 auto 30px;
    color: var(--catalog-muted);
    font-size: 1.1rem;
}

.search-container {
    position: relative;
    width: min(100%, 500px);
    margin: 0 auto 40px;
}

.search-input {
    display: block;
    width: 100%;
    min-height: 54px;
    padding: 14px 52px 14px 25px;
    border: 1px solid var(--catalog-border-strong);
    border-radius: 27px;
    outline: 0;
    background: var(--catalog-surface);
    color: var(--catalog-text);
    caret-color: var(--catalog-text);
    font-size: 1rem;
    line-height: 1.5;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}

.search-input::-webkit-search-cancel-button {
    display: none;
}

.search-input::placeholder {
    color: var(--catalog-muted);
    opacity: 1;
}

.search-input:hover {
    border-color: rgba(255, 255, 255, 0.32);
}

.search-input:focus {
    border-color: var(--catalog-accent);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.search-clear {
    position: absolute;
    top: 50%;
    right: 13px;
    display: inline-flex;
    width: 34px;
    height: 34px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: var(--catalog-muted);
    cursor: pointer;
    transform: translateY(-50%);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.search-clear:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--catalog-text);
}

.search-clear svg {
    width: 18px;
    height: 18px;
}

.catalog-controls {
    width: 100%;
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    justify-content: center;
    width: min(100% - 20px, 1600px);
    margin: 0 auto 30px;
}

.category-btn {
    min-height: 41px;
    padding: 9px 20px;
    border: 1px solid var(--catalog-border-strong);
    border-radius: 21px;
    background: var(--catalog-surface);
    color: var(--catalog-text);
    font-size: 0.9rem;
    line-height: 1.4;
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.category-btn:hover {
    border-color: var(--catalog-accent);
    background: rgba(102, 126, 234, 0.3);
}

.category-btn:active {
    transform: translateY(1px);
}

.category-btn.is-active {
    border-color: var(--catalog-accent);
    background: linear-gradient(45deg, var(--catalog-accent) 0%, var(--catalog-accent-deep) 100%);
    box-shadow: 0 5px 16px rgba(31, 38, 92, 0.25);
}

.category-btn:focus-visible,
.search-clear:focus-visible,
.retry-button:focus-visible,
.template-image-link:focus-visible,
.demo-icon:focus-visible,
.demo-link:focus-visible {
    outline: 3px solid var(--catalog-focus);
    outline-offset: 3px;
}

.template-count {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: min(100% - 20px, 1600px);
    margin: 0 auto 30px;
    color: var(--catalog-muted);
    text-align: center;
}

.template-count svg {
    width: 16px;
    height: 16px;
    flex: 0 0 auto;
}

.catalog-results {
    width: 100%;
    padding-bottom: 20px;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 397px));
    gap: 25px;
    justify-content: center;
    width: min(100% - 20px, 1663px);
    margin: 0 auto;
}

.template-card {
    width: 100%;
    max-width: 397px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid var(--catalog-border);
    border-radius: 8px;
    background: var(--catalog-card);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

@media (hover: hover) {
    .template-card:hover {
        border-color: rgba(102, 126, 234, 0.3);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        transform: translateY(-5px);
    }
}

.template-image-container {
    position: relative;
    width: 100%;
    aspect-ratio: 397 / 635;
    overflow: hidden;
    background: linear-gradient(45deg, var(--catalog-accent) 0%, var(--catalog-accent-deep) 100%);
}

.template-image-link {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

.template-image {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: auto;
    min-height: 100%;
    object-fit: cover;
    object-position: top center;
    background: linear-gradient(45deg, var(--catalog-accent) 0%, var(--catalog-accent-deep) 100%);
    cursor: pointer;
    transform: translate3d(0, 0, 0);
    will-change: transform;
    transition: transform 1s ease-out;
}

.template-image.is-broken {
    display: none;
}

.template-image-container.is-image-broken::after {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    color: var(--catalog-muted);
    content: "预览图暂不可用";
    font-size: 0.9rem;
    text-align: center;
}

@media (hover: hover) {
    .template-card:hover .template-image-container.can-scroll .template-image {
        transform: translate3d(0, var(--image-travel, 0), 0);
        transition-duration: 7s;
        transition-timing-function: ease-in-out;
    }
}

.demo-icon {
    position: absolute;
    top: 3.5%;
    right: 3.5%;
    z-index: 2;
    display: flex;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    background: rgba(102, 126, 234, 0.92);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    color: #ffffff;
    opacity: 0;
    text-decoration: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform: scale(0.96);
    transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.demo-icon svg {
    width: 15px;
    height: 15px;
}

.template-card:hover .demo-icon,
.template-card:focus-within .demo-icon {
    opacity: 1;
    transform: scale(1);
}

.demo-icon:hover {
    background: var(--catalog-accent);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: scale(1.05);
}

.template-content {
    padding: 20px;
    text-align: left;
}

.template-title {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    justify-content: space-between;
    min-width: 0;
    margin-bottom: 10px;
}

.template-title h2 {
    min-width: 0;
    margin: 0;
    color: var(--catalog-text);
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: 0;
    overflow-wrap: anywhere;
}

.category-tag {
    flex: 0 0 auto;
    max-width: 48%;
    padding: 4px 12px;
    overflow: hidden;
    border-radius: 12px;
    background: linear-gradient(45deg, var(--catalog-accent) 0%, var(--catalog-accent-deep) 100%);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 500;
    line-height: 1.35;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.template-description {
    min-height: 1.5em;
    margin: 0 0 15px;
    color: var(--catalog-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 15px;
    padding: 0;
    list-style: none;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    min-height: 25px;
    padding: 4px 8px;
    border-radius: 8px;
    background: var(--catalog-surface);
    color: var(--catalog-muted);
    font-size: 0.8rem;
    line-height: 1.3;
}

.feature-tag svg {
    width: 13px;
    height: 13px;
    flex: 0 0 auto;
}

.demo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--catalog-muted);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.25s ease;
}

.demo-link svg {
    width: 14px;
    height: 14px;
    opacity: 0.8;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.demo-link:hover {
    color: var(--catalog-accent);
}

.demo-link:hover svg {
    opacity: 1;
    transform: translateX(2px);
}

.catalog-status {
    display: flex;
    min-height: 84px;
    gap: 10px;
    align-items: center;
    justify-content: center;
    width: min(100% - 20px, 1600px);
    margin: 8px auto 0;
    padding: 24px 10px;
    color: var(--catalog-muted);
    font-size: 0.9rem;
    text-align: center;
}

.catalog-status > svg {
    width: 20px;
    height: 20px;
    flex: 0 0 auto;
}

.empty-state,
.error-state {
    min-height: 150px;
    flex-direction: column;
}

.empty-state > svg,
.error-state > svg {
    width: 42px;
    height: 42px;
    opacity: 0.55;
}

.status-spinner {
    animation: catalog-spin 0.9s linear infinite;
}

.retry-button {
    display: inline-flex;
    min-height: 38px;
    padding: 7px 15px;
    gap: 7px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--catalog-border-strong);
    border-radius: 19px;
    background: var(--catalog-surface);
    color: var(--catalog-text);
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.retry-button:hover {
    border-color: var(--catalog-accent);
    background: rgba(102, 126, 234, 0.3);
}

.retry-button svg {
    width: 15px;
    height: 15px;
}

.scroll-sentinel {
    width: 100%;
    height: 1px;
}

.noscript-notice {
    width: min(100% - 30px, 700px);
    margin: 20px auto 40px;
    padding: 14px 18px;
    border: 1px solid var(--catalog-border-strong);
    border-radius: 6px;
    background: var(--catalog-surface);
    color: var(--catalog-muted);
    text-align: center;
}

@keyframes catalog-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (min-width: 1200px) and (max-width: 1399px) {
    .templates-grid {
        grid-template-columns: repeat(3, minmax(0, 397px));
        max-width: 1241px;
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .templates-grid {
        grid-template-columns: repeat(2, minmax(0, 397px));
        max-width: 819px;
    }
}

@media (max-width: 767px) {
    .logo-title {
        font-size: 2rem;
    }

    .category-tabs {
        width: min(100% - 15px, 1600px);
        gap: 10px;
    }

    .category-btn {
        min-height: 35px;
        padding: 7px 15px;
        font-size: 0.8rem;
    }

    .template-count {
        width: calc(100% - 15px);
    }

    .templates-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
        gap: 20px;
        width: calc(100% - 15px);
    }
}

@media (max-width: 480px) {
    .catalog-hero {
        padding-top: 48px;
    }

    .catalog-container {
        width: calc(100% - 24px);
    }

    .logo-title {
        gap: 7px;
        font-size: 1.5rem;
    }

    .slogan {
        font-size: 1rem;
    }

    .search-input {
        min-height: 48px;
        padding: 11px 48px 11px 20px;
        font-size: 0.9rem;
    }

    .category-tabs {
        width: calc(100% - 10px);
        gap: 8px;
    }

    .category-btn {
        min-height: 32px;
        padding: 5px 12px;
        font-size: 0.75rem;
    }

    .template-count {
        width: calc(100% - 10px);
        font-size: 0.9rem;
    }

    .templates-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 15px;
        width: calc(100% - 10px);
    }

    .demo-icon {
        width: 32px;
        height: 32px;
    }

    .demo-icon svg {
        width: 13px;
        height: 13px;
    }

    .template-content {
        padding: 18px;
    }
}

@media (hover: none), (pointer: coarse) {
    .demo-icon {
        opacity: 1;
        transform: scale(1);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

    .template-image {
        transform: none !important;
    }
}