/* ═══════════════════════════════════════════════
   BASE64 IMAGE CONVERTER APP
═══════════════════════════════════════════════ */

.b64-wrap {
    max-width: 520px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.b64-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--text, #0f172a);
}

/* Drop zone */
.b64-drop {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 2rem 1.5rem;
    border: 2px dashed var(--border, #e2e8f0);
    border-radius: var(--radius-lg, 14px);
    background: var(--bg2, #f8fafc);
    color: var(--muted, #64748b);
    cursor: pointer;
    transition: border-color var(--transition, 0.18s ease), background var(--transition, 0.18s ease);
    text-align: center;
}

.b64-drop:hover,
.b64-drop:focus-visible,
.b64-drop.is-dragover {
    border-color: var(--accent, #2563eb);
    background: var(--bg3, #f1f5f9);
}

.b64-drop-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text2, #334155);
}

.b64-drop-hint {
    font-size: 0.75rem;
}

.b64-filename {
    display: none;
    text-align: center;
    font-size: 0.8rem;
    font-family: var(--font-mono, monospace);
    color: var(--accent, #2563eb);
    word-break: break-all;
}

/* Checkbox */
.b64-checkbox {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text2, #334155);
}

.b64-checkbox input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--accent, #2563eb);
    cursor: pointer;
}

/* Resize controls */
.b64-resize {
    display: none;
    align-items: flex-end;
    justify-content: center;
    gap: 0.75rem;
}

.b64-resize.is-active {
    display: flex;
}

.b64-control {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
}

.b64-control label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--muted, #64748b);
}

.b64-dim {
    width: 5.5rem;
    text-align: center;
    font-size: 0.95rem;
    font-weight: 600;
    -moz-appearance: textfield;
}

.b64-dim::-webkit-outer-spin-button,
.b64-dim::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Lock icon */
.b64-link-icon {
    width: 36px;
    height: 36px;
    color: var(--accent, #2563eb);
    cursor: pointer;
    flex-shrink: 0;
    padding: 0.4rem;
    border: 1px solid var(--border, #e2e8f0);
    border-radius: var(--radius-sm, 6px);
    background: var(--bg2, #f8fafc);
    transition: color var(--transition, 0.18s ease), opacity var(--transition, 0.18s ease), border-color var(--transition, 0.18s ease);
    margin-bottom: 0.35rem;
}

.b64-link-icon:hover {
    border-color: var(--accent, #2563eb);
}

.b64-link-icon.is-unlocked {
    color: var(--muted, #64748b);
    opacity: 0.6;
}

/* Buttons */
.b64-btns {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Output */
.b64-output {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg2, #f8fafc);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: var(--radius-lg, 14px);
    padding: 1.25rem;
}

.b64-preview {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--radius, 10px);
    border: 1px solid var(--border, #e2e8f0);
    object-fit: contain;
    background: var(--bg, #fff);
}

.b64-result {
    width: 100%;
    font-family: var(--font-mono, monospace);
    font-size: 0.75rem;
    resize: vertical;
    word-break: break-all;
    line-height: 1.5;
}

.b64-meta {
    font-size: 0.75rem;
    color: var(--muted, #64748b);
    text-align: center;
}