/* style.css */
:root {
    --animation-speed: 0.3s;
}

/* 基础布局和图标样式 */
body {
    transition: background-color var(--animation-speed) ease, color var(--animation-speed) ease;
}
.icon {
    vertical-align: middle;
    margin-right: 0.25rem;
}
button .icon { margin-right: 0.5rem; }

/* 提升视觉效果 */
article, section {
    border-radius: var(--pico-border-radius);
    padding: var(--pico-spacing);
}

/* 错误消息 */
.error-message {
    color: var(--pico-color-red-500);
}

/* 占位符文本 */
.placeholder-text {
    color: var(--pico-secondary);
    text-align: center;
    padding: 1rem;
    font-style: italic;
}

/* 分析结果卡片 */
#result-section article {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: var(--pico-block-spacing-horizontal);
    align-items: start;
    animation: fadeIn 0.5s ease-in-out;
}
#result-section img {
    max-width: 100%;
    border-radius: var(--pico-border-radius);
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
@media (max-width: 576px) {
    #result-section article {
        grid-template-columns: 1fr;
    }
}

/* 下载历史卡片网格布局 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--pico-grid-spacing-vertical) var(--pico-grid-spacing-horizontal);
}
.history-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    animation: fadeIn 0.5s ease-in-out;
}
.history-card footer {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    padding-top: var(--pico-block-spacing-vertical);
}
.history-card .file-info {
    font-size: 0.8em;
    color: var(--pico-secondary);
}

/* 进度条样式 */
.progress-bar {
    width: 100%;
    background-color: var(--pico-form-element-background-color);
    border: 1px solid var(--pico-form-element-border-color);
    border-radius: var(--pico-border-radius);
    overflow: hidden;
    margin-top: 0.5rem;
}
.progress-bar-fill {
    height: 1.5rem;
    width: 0%;
    background-color: var(--pico-primary);
    text-align: center;
    line-height: 1.5rem;
    color: var(--pico-primary-inverse);
    transition: width var(--animation-speed) ease;
    white-space: nowrap;
    overflow: hidden;
}
.task-status {
    font-size: 0.8em;
    color: var(--pico-secondary);
    margin-top: 0.25rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.history-card.highlight {
    transition: background-color 0.5s ease, border-color 0.5s ease;
    background-color: var(--pico-primary-background);
    border-color: var(--pico-primary-border);
}