:root {
    --sna-primary: #2B80FF;
    --sna-primary-hover: #1a6ce0;
    --sna-bg: #F4F7FE;
    --sna-card-bg: #ffffff;
    --sna-text: #2b3674;
    --sna-text-muted: #a3aed0;
    --sna-border: #E0E5F2;
    --sna-shadow: 0 18px 40px rgba(112, 144, 176, 0.12);
    --sna-shadow-hover: 0 18px 40px rgba(112, 144, 176, 0.22);
}

.sna-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--sna-text);
    background: var(--sna-bg);
    border-radius: 1.5rem;
    box-shadow: var(--sna-shadow);
}

.sna-header {
    text-align: center;
    margin-bottom: 2rem;
}

.sna-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0 0 0.75rem 0;
    color: #1B2559;
}

.sna-header p {
    color: var(--sna-text-muted);
    font-size: 1.1rem;
    margin: 0;
}

/* Filter Bar */
.sna-filters {
    display: flex;
    overflow-x: auto;
    gap: 0.75rem;
    padding: 0.5rem 0 1.5rem 0;
    margin-bottom: 1rem;
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE */
    justify-content: center;
}

.sna-filters::-webkit-scrollbar {
    display: none;
}

.sna-filter-btn {
    background: var(--sna-card-bg);
    border: 1px solid var(--sna-border);
    color: var(--sna-text-muted);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    font-size: 0.95rem;
    box-shadow: 0 2px 6px rgba(112, 144, 176, 0.08);
}

.sna-filter-btn:hover {
    color: var(--sna-primary);
    border-color: var(--sna-primary);
}

.sna-filter-btn.active {
    background: var(--sna-primary);
    color: #fff;
    border-color: var(--sna-primary);
    box-shadow: 0 4px 12px rgba(43, 128, 255, 0.3);
}

/* Input Area */
.sna-input-wrapper {
    position: relative;
    margin-bottom: 2.5rem;
    background: var(--sna-card-bg);
    padding: 1rem;
    border-radius: 1.25rem;
    box-shadow: var(--sna-shadow);
    border: 1px solid var(--sna-border);
}

#sna-input {
    width: 100%;
    padding: 0.5rem;
    font-size: 1.5rem;
    border: none;
    background: transparent;
    color: var(--sna-text);
    text-align: center;
    font-weight: 600;
}

#sna-input:focus {
    outline: none;
}

#sna-input::placeholder {
    color: var(--sna-text-muted);
    font-weight: 400;
}

/* Results Grid */
.sna-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.sna-card {
    background: var(--sna-card-bg);
    border-radius: 1.25rem;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    min-height: 140px;
}

.sna-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sna-shadow-hover);
    border-color: rgba(43, 128, 255, 0.3);
}

.sna-style-name {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sna-text-muted);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.sna-preview {
    font-size: 1.35rem;
    font-weight: 500;
    color: #1B2559;
    word-break: break-all;
    line-height: 1.4;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sna-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #f0f3f8;
}

.sna-action-btn-group {
    display: flex;
    gap: 0.5rem;
}

.sna-copy-btn {
    background: rgba(43, 128, 255, 0.1);
    color: var(--sna-primary);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 0.75rem;
    font-size: 0.9rem;
    font-weight: 700;
    transition: all 0.2s ease;
    cursor: pointer;
}

.sna-card:hover .sna-copy-btn {
    background: var(--sna-primary);
    color: #fff;
}

.sna-favorite-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--sna-text-muted);
    font-size: 1.2rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.sna-favorite-btn:hover {
    background: #FFEFF1;
    color: #FF5E7D;
}

.sna-loading-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem;
    color: var(--sna-text-muted);
}

/* Toast */
.sna-copied-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #1B2559;
    color: white;
    padding: 1rem 2rem;
    border-radius: 1rem;
    font-weight: 600;
    box-shadow: var(--sna-shadow);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

@media (max-width: 640px) {
    .sna-container {
        padding: 1rem;
        margin: 0.5rem;
        border-radius: 0;
        box-shadow: none;
        background: transparent;
    }

    .sna-filters {
        justify-content: flex-start;
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }

    .sna-results-grid {
        grid-template-columns: 1fr;
    }

    .sna-header h2 {
        font-size: 1.75rem;
    }
}