:root {
    --primary: #D97706;
    --primary-dim: #D9770640;
    --primary-glow: #D9770618;
    --secondary: #FBBF24;
    --accent: #6366F1;
    --accent-dim: #6366F130;
    --bg: #1A1400;
    --bg-card: #261E08;
    --bg-card-hover: #302610;
    --bg-input: #1E1805;
    --border: #3D3010;
    --border-hover: #D9770660;
    --text: #F5F0E0;
    --text-muted: #8B7B55;
    --text-dim: #6B5E3E;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --success: #10B981;
    --danger: #EF4444;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

html {
    font-size: 16px;
    scroll-behavior: smooth
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: linear-gradient(180deg, rgba(26, 20, 0, 0.98), rgba(26, 20, 0, 0.92));
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 1.5rem
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
    gap: 1rem
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg);
    font-size: 1.5rem;
    font-weight: 800;
    box-shadow: 0 0 20px var(--primary-dim)
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: -2px
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    justify-content: flex-end
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 420px
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none
}

.search-input {
    width: 100%;
    padding: 0.55rem 0.75rem 0.55rem 2.25rem;
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.85rem;
    outline: none;
    transition: border-color var(--transition)
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow)
}

.search-input::placeholder {
    color: var(--text-dim)
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition)
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted)
}

.btn-ghost:hover {
    color: var(--primary);
    background: var(--primary-glow)
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition)
}

.btn-icon:hover {
    color: var(--primary);
    background: var(--primary-glow)
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem
}

.category-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem
}

.cat-chip {
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 0.78rem;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap
}

.cat-chip:hover {
    border-color: var(--primary);
    color: var(--text)
}

.cat-chip.active {
    background: var(--primary-glow);
    border-color: var(--primary);
    color: var(--primary)
}

.meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem
}

.recently-used {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap
}

.meta-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600
}

.meta-empty {
    font-size: 0.75rem;
    color: var(--text-dim)
}

.recent-char {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition)
}

.recent-char:hover {
    border-color: var(--primary);
    transform: scale(1.1)
}

.result-count {
    font-size: 0.75rem;
    color: var(--text-muted)
}

.preview-panel {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    position: relative;
    animation: slideDown 0.3s ease
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

.preview-char {
    font-size: 4rem;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    flex-shrink: 0
}

.preview-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.4rem
}

.preview-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem
}

.preview-key {
    font-weight: 600;
    color: var(--text-muted);
    min-width: 70px
}

.preview-val {
    font-weight: 500
}

.preview-val.mono {
    font-family: var(--font-mono);
    color: var(--secondary)
}

.copy-btn-small {
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all var(--transition)
}

.copy-btn-small:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow)
}

.preview-sizes {
    display: flex;
    gap: 1rem;
    margin-top: 0.25rem;
    align-items: baseline
}

.size-sample {
    color: var(--secondary)
}

.sz-sm {
    font-size: 0.75rem
}

.sz-md {
    font-size: 1.25rem
}

.sz-lg {
    font-size: 2rem
}

.sz-xl {
    font-size: 3rem
}

.preview-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem
}

.entity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.5rem
}

.entity-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    position: relative
}

.entity-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3)
}

.entity-card:active {
    transform: translateY(0)
}

.entity-char {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.25rem;
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center
}

.entity-name {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.entity-code {
    font-size: 0.6rem;
    color: var(--text-dim);
    font-family: var(--font-mono)
}

.entity-fav {
    position: absolute;
    top: 0.4rem;
    right: 0.4rem;
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-dim);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    border-radius: 50%;
    opacity: 0
}

.entity-card:hover .entity-fav {
    opacity: 1
}

.entity-fav.active {
    color: var(--danger);
    opacity: 1
}

.entity-fav:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1)
}

.loading-more {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem
}

.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 0.5rem
}

.toast {
    padding: 0.6rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    box-shadow: var(--shadow);
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(20px)
    }

    to {
        opacity: 1;
        transform: translateX(0)
    }
}

::-webkit-scrollbar {
    width: 6px
}

::-webkit-scrollbar-track {
    background: transparent
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted)
}

@media(max-width:1024px) {
    .entity-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr))
    }
}

@media(max-width:640px) {
    .header-content {
        flex-wrap: wrap
    }

    .search-box {
        max-width: 100%;
        order: 3;
        width: 100%
    }

    .main-content {
        padding: 1rem
    }

    .preview-panel {
        flex-direction: column;
        text-align: center
    }

    .entity-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr))
    }
}