/* ================================================================
   Image ↔ Base64 URI — image-base64-uri.css
   Accent: #6366F1 (indigo)
   ================================================================ */

.img-b64-section {
    --tool-accent: #6366F1;
    --tool-accent-rgb: 99, 102, 241;
}

/* ── Primary button ─────────────────────────────────────────── */
.img-b64-section .tool-btn--primary {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    border-color: transparent;
    color: #fff;
}

.img-b64-section .tool-btn--primary:hover {
    background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
}

/* ── Mode toggle ────────────────────────────────────────────── */
.ib-mode-toggle {
    display: flex;
    gap: 4px;
    background: #F1F5F9;
    border-radius: 10px;
    padding: 4px;
    width: fit-content;
    margin-bottom: 1.25rem;
}

.ib-mode-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 18px;
    border-radius: 7px;
    border: none;
    background: transparent;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--tool-text-muted);
    cursor: pointer;
    transition: background 0.18s, color 0.18s, box-shadow 0.18s;
    white-space: nowrap;
}

.ib-mode-btn--active {
    background: #fff;
    color: var(--tool-accent);
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.10);
}

.ib-mode-btn:not(.ib-mode-btn--active):hover {
    color: var(--tool-text-primary);
    background: rgba(255, 255, 255, 0.55);
}

/* ── Method bar ─────────────────────────────────────────────── */
.ib-method-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.ib-method-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 14px;
    border-radius: 20px;
    border: 1.5px solid rgba(100, 116, 139, 0.2);
    background: transparent;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--tool-text-muted);
    cursor: pointer;
    transition: all 0.15s;
}

.ib-method-btn--active {
    border-color: var(--tool-accent);
    color: var(--tool-accent);
    background: rgba(var(--tool-accent-rgb), 0.07);
    font-weight: 600;
}

.ib-method-btn:not(.ib-method-btn--active):hover {
    border-color: rgba(var(--tool-accent-rgb), 0.35);
    color: var(--tool-text-primary);
}

.ib-method-hint {
    font-size: 0.8125rem;
    color: var(--tool-text-muted);
    margin-left: 4px;
}

/* ── Drop zone ──────────────────────────────────────────────── */
.ib-drop-zone {
    border: 2px dashed rgba(var(--tool-accent-rgb), 0.35);
    border-radius: 12px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.18s, background 0.18s;
    position: relative;
    background: rgba(var(--tool-accent-rgb), 0.02);
    outline: none;
}

.ib-drop-zone:hover,
.ib-drop-zone:focus-visible {
    border-color: var(--tool-accent);
    background: rgba(var(--tool-accent-rgb), 0.05);
}

.ib-drop-zone--over {
    border-color: var(--tool-accent);
    background: rgba(var(--tool-accent-rgb), 0.08);
    border-style: solid;
}

.ib-drop-icon {
    font-size: 2.75rem;
    color: var(--tool-accent);
    display: block;
    margin-bottom: 0.625rem;
    opacity: 0.75;
}

.ib-drop-text {
    font-weight: 600;
    font-size: 1rem;
    color: var(--tool-text-primary);
    margin: 0 0 0.25rem;
}

.ib-drop-sub {
    font-size: 0.875rem;
    color: var(--tool-text-muted);
    margin: 0;
}

.ib-file-hidden {
    position: absolute;
    inset: 0;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    pointer-events: none;
    /* handled by drop-zone click */
}

/* ── URL panel ──────────────────────────────────────────────── */
.ib-url-panel {
    background: rgba(var(--tool-accent-rgb), 0.04);
    border: 1.5px solid rgba(var(--tool-accent-rgb), 0.14);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

.ib-url-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
    flex-wrap: wrap;
}

.ib-url-input {
    flex: 1;
    min-width: 200px;
}

.ib-url-hint {
    font-size: 0.8125rem;
    color: var(--tool-text-muted);
    margin: 0.625rem 0 0;
    display: flex;
    align-items: center;
    gap: 5px;
}

.ib-url-status {
    margin-top: 0.625rem;
}

/* ── Batch list ─────────────────────────────────────────────── */
.ib-batch-list {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    margin-bottom: 0.875rem;
}

/* ── Batch bar ──────────────────────────────────────────────── */
.ib-batch-bar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 0.5rem 0.25rem 0.625rem;
    flex-wrap: wrap;
}

/* ── Skeleton / loading card ────────────────────────────────── */
@keyframes ibShimmer {
    0% {
        background-position: -400px 0;
    }

    100% {
        background-position: 400px 0;
    }
}

@keyframes ibIndeterminate {
    0% {
        left: -35%;
        width: 35%;
    }

    60% {
        left: 100%;
        width: 35%;
    }

    100% {
        left: 100%;
        width: 35%;
    }
}

.ib-skel-thumb,
.ib-skel-line {
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 800px 100%;
    animation: ibShimmer 1.4s infinite linear;
    border-radius: 6px;
}

.ib-skel-label {
    font-size: 0.8125rem;
    color: var(--tool-text-muted);
}

.ib-progress-track {
    position: relative;
    height: 3px;
    background: #E2E8F0;
    border-radius: 99px;
    overflow: hidden;
    margin-top: 4px;
}

.ib-progress-fill {
    position: absolute;
    top: 0;
    height: 100%;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    border-radius: 99px;
    animation: ibIndeterminate 1.5s infinite ease-in-out;
}

/* Decode button spinner */
.ib-spin {
    display: inline-block;
    animation: ibSpinAnim 0.7s linear infinite;
}

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

/* ── Card ───────────────────────────────────────────────────── */
.ib-card {
    display: flex;
    gap: 1rem;
    background: #F8FAFC;
    border: 1.5px solid rgba(100, 116, 139, 0.12);
    border-radius: 12px;
    padding: 1rem;
    overflow: hidden;
    animation: ibCardIn 0.2s ease both;
}

@keyframes ibCardIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

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

/* ── Card preview (thumbnail) ───────────────────────────────── */
.ib-card-preview {
    position: relative;
    flex-shrink: 0;
    width: 110px;
    height: 110px;
    border-radius: 8px;
    overflow: hidden;
    background: #E2E8F0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ib-card-thumb {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.ib-card-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 22px;
    height: 22px;
    padding: 0;
    background: rgba(15, 23, 42, 0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s;
}

.ib-card:hover .ib-card-remove,
.ib-card-remove:focus-visible {
    opacity: 1;
}

/* ── Card body ──────────────────────────────────────────────── */
.ib-card-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.ib-card-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ib-card-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--tool-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ib-card-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.ib-chip {
    display: inline-flex;
    align-items: center;
    padding: 2px 9px;
    background: #E2E8F0;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--tool-text-secondary, #475569);
    font-family: var(--tool-font-mono, monospace);
    white-space: nowrap;
}

.ib-chip--overhead {
    background: #FEF3C7;
    color: #92400E;
}

/* ── Format tabs ────────────────────────────────────────────── */
.ib-fmt-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.ib-fmt-btn {
    padding: 3px 10px;
    border-radius: 5px;
    border: 1.5px solid rgba(100, 116, 139, 0.2);
    background: transparent;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--tool-font-mono, monospace);
    color: var(--tool-text-muted);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.ib-fmt-btn:hover {
    border-color: rgba(var(--tool-accent-rgb), 0.4);
    color: var(--tool-accent);
}

.ib-fmt-btn--active:hover {
    background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    border-color: transparent;
    color: #fff;
}

.ib-fmt-btn--active {
    background: var(--tool-accent);
    border-color: var(--tool-accent);
    color: #fff;
    font-weight: 600;
}

/* ── Card output row ────────────────────────────────────────── */
.ib-card-output-row {
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.ib-card-output {
    flex: 1;
    height: 72px;
    font-size: 0.8125rem;
    resize: vertical;
    overflow-y: auto;
}

/* ── Decode panel ───────────────────────────────────────────── */
.ib-decode-textarea {
    min-height: 120px;
    font-size: 0.875rem;
    resize: vertical;
}

.ib-decode-result {
    margin-top: 1.25rem;
    background: #F8FAFC;
    border: 1.5px solid rgba(100, 116, 139, 0.12);
    border-radius: 12px;
    padding: 1.25rem;
}

.ib-decode-preview-wrap {
    text-align: center;
    padding: 1rem;
    background: #E2E8F0;
    border-radius: 8px;
    margin-bottom: 1rem;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ib-decode-img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: 4px;
}

.ib-decode-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 1rem;
}

.ib-decode-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
    .ib-mode-toggle {
        width: 100%;
        justify-content: center;
    }

    .ib-method-hint {
        display: none;
    }

    .ib-card {
        flex-direction: column;
    }

    .ib-card-preview {
        width: 100%;
        height: 160px;
    }

    .ib-fmt-tabs {
        gap: 4px;
    }

    .ib-fmt-btn {
        font-size: 0.6875rem;
        padding: 3px 8px;
    }

    .ib-card-output-row {
        flex-direction: column;
    }

    .ib-decode-actions {
        flex-direction: column;
    }

    .ib-decode-actions .tool-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Drop zone */
.ib-drop-zone {
    border: 2px dashed rgba(var(--tool-accent-rgb), 0.4);
    border-radius: var(--tool-radius-md);
    padding: 3rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
}

.ib-drop-zone:hover,
.ib-drop-zone--over {
    border-color: var(--tool-accent);
    background: rgba(var(--tool-accent-rgb), 0.04);
}

.ib-drop-icon {
    font-size: 2.5rem;
    color: var(--tool-accent);
    display: block;
    margin-bottom: 0.5rem;
}

.ib-drop-text {
    font-weight: 600;
    color: var(--tool-text-primary);
    margin: 0 0 0.25rem;
}

.ib-drop-sub {
    font-size: 0.9375rem;
    color: var(--tool-text-muted);
    margin: 0;
}

.ib-file-hidden {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

/* Result section */
.ib-result-wrap {
    margin-top: 1.25rem;
}

.ib-preview-block {
    background: var(--tool-surface);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-md);
    padding: 1rem;
    text-align: center;
    margin-bottom: 1rem;
    max-height: 320px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ib-preview-img {
    max-width: 100%;
    max-height: 290px;
    object-fit: contain;
    border-radius: 4px;
}

/* Metadata grid */
.ib-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.ib-meta-item {
    background: var(--tool-surface);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-sm);
    padding: 0.6rem 0.875rem;
}

.ib-meta-label {
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tool-text-muted);
    display: block;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.ib-meta-value {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--tool-text-primary);
    font-family: var(--tool-font-mono);
}

/* Output block */
.ib-output-block {
    background: var(--tool-surface);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 0.875rem;
}

.ib-output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ib-output-label {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tool-accent);
}

.ib-uri-textarea {
    font-size: 1rem;
    min-height: 120px;
}

.ib-reset-btn {
    display: block;
    margin: 0 auto;
}