/* ===============================================
   极智搜 · Vercel-Inspired Minimal Design System
   =============================================== */

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #fff;
    --fg: #000;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eaeaea;
    --gray-300: #ddd;
    --gray-400: #999;
    --gray-500: #888;
    --gray-600: #666;
    --gray-700: #444;
    --gray-800: #333;
    --gray-900: #111;
    --accent: #0070f3;
    --error: #e00;
    --radius-sm: 6px;
    --radius-md: 8px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== Navigation ========== */
.nav {
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-inner {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-logo {
    font-weight: 700;
    font-size: 15px;
    color: var(--fg);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-link {
    font-size: 14px;
    color: var(--gray-500);
}

/* ========== Hero / Search ========== */
.hero {
    text-align: center;
    padding: 80px 24px 48px;
    max-width: 640px;
    margin: 0 auto;
}

.hero-title {
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.15;
    color: var(--fg);
    margin-bottom: 12px;
}

.hero-desc {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 40px;
}

.search-form {
    display: flex;
    align-items: center;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--bg);
    transition: border-color 0.15s, box-shadow 0.15s;
    overflow: hidden;
}

.search-form:focus-within {
    border-color: var(--fg);
    box-shadow: 0 0 0 1px var(--fg);
}

.search-icon {
    flex-shrink: 0;
    margin-left: 14px;
    color: var(--gray-400);
}

.search-form input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 12px;
    font-size: 15px;
    font-family: var(--font);
    background: transparent;
    color: var(--fg);
}

.search-form input::placeholder {
    color: var(--gray-400);
}

.search-form button {
    flex-shrink: 0;
    border: none;
    background: var(--fg);
    color: var(--bg);
    padding: 10px 24px;
    margin: 4px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: background 0.15s;
}

.search-form button:hover {
    background: var(--gray-800);
}

/* ========== Main ========== */
.main {
    flex: 1;
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px 80px;
}

/* ========== Loading ========== */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 0;
    color: var(--gray-500);
    font-size: 14px;
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-200);
    border-top-color: var(--fg);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-bottom: 16px;
}

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

/* ========== Error ========== */
.error-box {
    text-align: center;
    padding: 32px 24px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--error);
    font-size: 14px;
    margin-top: 16px;
}

.error-box.hidden {
    display: none;
}

/* ========== Results List ========== */
.results {
    display: flex;
    flex-direction: column;
}

/* ========== Single Result Card ========== */
.result-item {
    border-bottom: 1px solid var(--gray-200);
    padding: 24px 0;
}

.result-item:first-child {
    border-top: 1px solid var(--gray-200);
}

.result-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--fg);
    margin-bottom: 4px;
    line-height: 1.4;
}

.result-desc {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== Resource Links ========== */
.result-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.res-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--fg);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.15s;
    max-width: 100%;
}

.res-link:hover {
    background: var(--fg);
    color: var(--bg);
    border-color: var(--fg);
}

.res-link .cloud-icon {
    font-size: 14px;
    flex-shrink: 0;
}

.res-link .link-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.res-link .provider-tag {
    font-size: 11px;
    color: var(--gray-400);
    border-left: 1px solid var(--gray-200);
    padding-left: 6px;
    margin-left: 2px;
    flex-shrink: 0;
}

.res-link:hover .provider-tag {
    color: var(--gray-300);
    border-color: var(--gray-600);
}

.res-row {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.report-btn {
    display: inline-flex;
    align-items: center;
    padding: 4px 6px;
    font-size: 11px;
    color: var(--gray-300);
    background: none;
    border: 1px dashed var(--gray-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font);
}

.report-btn:hover {
    color: var(--error);
    border-color: var(--error);
}

/* ========== Footer ========== */
.footer {
    text-align: center;
    padding: 32px 24px;
    border-top: 1px solid var(--gray-200);
    font-size: 13px;
    color: var(--gray-400);
}

/* ========== Responsive ========== */
@media (max-width: 640px) {
    .hero {
        padding: 48px 20px 32px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-desc {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .search-form input {
        font-size: 14px;
        padding: 12px 10px;
    }

    .search-form button {
        padding: 8px 16px;
        font-size: 13px;
    }

    .main {
        padding: 0 20px 48px;
    }

    .result-title {
        font-size: 15px;
    }

    .result-links {
        gap: 6px;
    }

    .res-link {
        font-size: 12px;
        padding: 5px 10px;
    }
}