@media (max-width: 720px) {
    .container { padding: 24px 14px 60px; }

    .app-header { margin-bottom: 24px; }
    .app-header h1 { font-size: 1.55rem; }
    .subtitle { font-size: 0.85rem; }

    .preset-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 12px;
        margin-bottom: 18px;
    }
    .preset-label { font-size: 0.8rem; }

    .preset-chips {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        width: 100%;
    }
    .preset-chip {
        align-items: center;
        text-align: center;
        padding: 8px 4px;
        gap: 2px;
        min-width: 0;
    }
    .preset-chip .chip-name {
        font-size: 0.78rem;
        line-height: 1.2;
    }
    .preset-chip .chip-size {
        font-size: 0.7rem;
    }

    .tab-btn { padding: 12px 16px; font-size: 0.92rem; }

    .drop-zone { padding: 40px 16px; }

    .gif-comparison { grid-template-columns: 1fr; }
    .result-summary { grid-template-columns: 1fr; }
    .settings-row { grid-template-columns: 1fr; gap: 10px; }

    .btn { width: 100%; min-width: 0; }
    .size-text { font-size: 1.35rem; }
}

@media (max-width: 360px) {
    .preset-chips {
        grid-template-columns: repeat(2, 1fr);
    }
    .app-header h1 { font-size: 1.4rem; }
}