/* CSS Variables */
:root {
    --bg: #ffffff;
    --fg: #000000;
    --fg-rgb: 0, 0, 0;
    --muted: #666666;
    --accent: #0066cc;
    --border-light: #e0e0e0;
    --border-separator: #cccccc;
    --container-max-width: 900px;
    --container-padding-desktop: 3rem;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --spacing-xxxl: 4rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --font-size-base: 1rem;
    --font-size-small: 0.9rem;
    --font-size-xsmall: 0.8rem;
    --font-size-h1: 2rem;
    --font-size-h2: 1.5rem;
    --hover-color: #333333;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --fg: #ffffff;
        --fg-rgb: 255, 255, 255;
        --muted: #999999;
        --accent: #4d9fff;
        --border-light: #333333;
        --border-separator: #444444;
        --hover-color: #cccccc;
    }
}

/* Reset & Base */
* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
        Cantarell, sans-serif;
}

body {
    background: var(--bg);
    color: var(--fg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition:
        background 0.2s,
        color 0.2s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.card {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--container-padding-desktop);
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Header - Centered */
header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    padding-top: var(--spacing-xxxl);
}

.logo {
    background: var(--fg);
    color: var(--bg);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 24px;
    transition:
        background 0.2s,
        color 0.2s;
}

.name-link {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

.name-link:hover {
    color: var(--hover-color);
}

.name-link:visited {
    color: inherit;
}

h1 {
    font-size: var(--font-size-h1);
    margin: 0;
    transition: color 0.2s ease;
}

h2 {
    font-size: var(--font-size-h2);
    margin: 0 0 1.5rem;
    text-align: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

h2::before,
h2::after {
    content: "";
    height: 1px;

    flex: 1;
    margin: 0 1rem;
    opacity: 0.5;
    max-width: 100px;
}

p.lead {
    margin: var(--spacing-xs) 0 0;
    color: var(--muted);
    font-size: var(--font-size-small);
}

kbd {
    background: rgba(var(--fg-rgb), 0.1);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
    font-size: 0.9em;
    border: 1px solid var(--border-light);
}

/* Main Content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    color: var(--muted);
    line-height: 1.6;
}

/* Search Section */
.search-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
    width: 100%;
}

.autocomplete-container {
    position: relative;
    width: 100%;
    max-width: 700px;
}

.search-container {
    width: 100%;
    position: relative;
}

.search-bar {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    padding-right: 3rem;
    font-size: 1.1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    background: var(--bg);
    color: var(--fg);
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
    font-family: inherit;
}

.search-bar:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--fg-rgb), 0.1);
}

.search-bar::placeholder {
    color: var(--muted);
}

.clear-search {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--muted);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    line-height: 1;
}

.clear-search:hover {
    background: rgba(var(--fg-rgb), 0.1);
    color: var(--fg);
}

.clear-search.visible {
    display: flex;
}

/* Autocomplete */
.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border: 2px solid var(--border-light);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    margin-top: -2px;
}

.autocomplete-dropdown.active {
    display: block;
}

.autocomplete-item {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: background 0.15s;
    border-bottom: 1px solid var(--border-light);
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
    background: rgba(var(--fg-rgb), 0.08);
}

.autocomplete-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(var(--fg-rgb), 0.15);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-small);
    color: var(--accent);
    font-weight: 500;
}

.autocomplete-history {
    color: var(--muted);
    font-size: var(--font-size-small);
}

.autocomplete-history-icon {
    display: inline-block;
    margin-right: 8px;
    opacity: 0.6;
}

/* Results Area */
.results-area {
    width: 100%;
    max-width: 700px;
    margin-top: var(--spacing-xl);
    display: none;
}

.results-area.active {
    display: block;
}

.results-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
}

.results-header {
    color: var(--muted);
    font-size: var(--font-size-small);
    font-weight: 500;
}

.share-button {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(var(--fg-rgb), 0.05);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--fg);
    cursor: pointer;
    font-size: var(--font-size-small);
    transition: all 0.2s;
    font-family: inherit;
}

.share-button:hover {
    background: rgba(var(--fg-rgb), 0.1);
    border-color: var(--accent);
}

.share-button svg {
    width: 14px;
    height: 14px;
}

.result-item {
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    transition: all 0.2s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
    color: inherit;
}

.result-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.result-title {
    font-weight: 600;
    font-size: 1.15rem;
    margin-bottom: var(--spacing-sm);
    color: var(--fg);
}

.result-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.result-tag {
    padding: 3px 10px;
    background: rgba(var(--fg-rgb), 0.1);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xsmall);
    color: var(--accent);
    font-weight: 500;
}

.result-description {
    color: var(--muted);
    line-height: 1.6;
    font-size: var(--font-size-small);
}

.no-results,
.empty-state,
.loading-state {
    text-align: center;
    color: var(--muted);
    padding: var(--spacing-xxl);
    font-size: 1.1rem;
}

.empty-state h3 {
    margin: 0 0 var(--spacing-lg);
    color: var(--fg);
    font-size: 1.2rem;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.tag-pill {
    padding: 8px 16px;
    background: rgba(var(--fg-rgb), 0.08);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    font-size: var(--font-size-small);
    color: var(--accent);
    cursor: pointer;
    transition: all 0.2s;
}

.tag-pill:hover {
    background: rgba(var(--fg-rgb), 0.15);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.recent-searches {
    margin-top: var(--spacing-xl);
}

.recent-searches h4 {
    margin: 0 0 var(--spacing-md);
    color: var(--muted);
    font-size: var(--font-size-small);
    font-weight: 500;
}

.recent-search-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.recent-search-item {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(var(--fg-rgb), 0.05);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    font-size: var(--font-size-small);
    color: var(--muted);
}

.recent-search-item:hover {
    background: rgba(var(--fg-rgb), 0.1);
    color: var(--fg);
}

.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-light);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

mark {
    background: rgba(var(--fg-rgb), 0.2);
    padding: 2px 4px;
    border-radius: 3px;
    color: var(--fg);
    font-weight: 500;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--fg);
    color: var(--bg);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 2000;
    font-size: var(--font-size-small);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Footer - Centered */
footer {
    margin-top: auto;
    padding-top: var(--spacing-xxl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

footer p {
    margin: 0;
    font-size: var(--font-size-small);
}

footer a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: var(--hover-color);
}

/* Responsive */
@media (max-width: 768px) {
    .card {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    header {
        padding-top: var(--spacing-xl);
        margin-bottom: var(--spacing-xl);
    }

    h1 {
        font-size: 1.5rem;
    }

    .search-bar {
        padding: var(--spacing-md) var(--spacing-lg);
        padding-right: 3rem;
        font-size: 1rem;
    }

    .result-item {
        padding: var(--spacing-md);
    }

    .result-title {
        font-size: 1rem;
    }

    .results-header-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .share-button {
        align-self: flex-end;
    }
}

@media (max-width: 480px) {
    .card {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .logo {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    h1 {
        font-size: 1.3rem;
    }

    .search-bar {
        padding: var(--spacing-sm) var(--spacing-md);
        padding-right: 2.5rem;
        font-size: 0.95rem;
    }

    .clear-search {
        right: var(--spacing-sm);
        width: 28px;
        height: 28px;
        font-size: 1.5rem;
    }

    .autocomplete-item {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }

    .result-item {
        padding: var(--spacing-sm);
    }

    .tag-cloud {
        gap: var(--spacing-xs);
    }

    .tag-pill {
        padding: 6px 12px;
        font-size: var(--font-size-xsmall);
    }
}