/* Image to Base64 Converter
-------------------------------------- */

.i2b-page {
    --i2b-accent: #06b6d4;
    --i2b-accent-dark: #0e7490;
    --i2b-accent-light: color-mix(in srgb, #06b6d4 10%, transparent);
    --i2b-good: #10b981;
    --i2b-good-light: color-mix(in srgb, #10b981 12%, transparent);
    --i2b-warn: #f59e0b;
    --i2b-warn-light: color-mix(in srgb, #f59e0b 12%, transparent);
    --i2b-danger: #dc2626;
    --i2b-danger-light: color-mix(in srgb, #dc2626 10%, transparent);
    --i2b-border: var(--flex-gray-15, rgba(0, 0, 0, 0.08));
    --i2b-border-strong: #e5e7eb;
    --i2b-surface: var(--solid-white, #fff);
    --i2b-soft: #f3f4f6;
    --i2b-radius: 16px;
    --i2b-radius-sm: 12px;
    --i2b-radius-xs: 10px;
    --i2b-shadow: 0 2px 4px rgba(0, 0, 0, 0.03), 0 6px 24px rgba(0, 0, 0, 0.07);
    --i2b-transition: 0.25s ease;
    position: relative;
    padding: 36px 0 80px;
}

/* Hero
-------------------------------------- */

.i2b-hero {
    max-width: 860px;
    margin: 0 auto;
    padding: 18px 0 28px;
    text-align: center;
}

.i2b-title {
    margin-bottom: 12px;
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.i2b-subtitle {
    max-width: 720px;
    margin: 0 auto;
    font-size: clamp(0.9rem, 1.5vw, 1rem);
    line-height: 1.65;
    color: var(--excerpt-color);
}

.i2b-subtitle code {
    padding: 1px 6px;
    font-size: 0.88em;
    background: var(--i2b-soft);
    border-radius: 4px;
}

/* Tool card
-------------------------------------- */

.i2b-tool-section {
    max-width: 940px;
    margin: 0 auto 28px;
}

.i2b-tool-card {
    border: 1px solid #ddd;
    border-radius: var(--i2b-radius);
    background: var(--i2b-surface);
    box-shadow: var(--i2b-shadow);
    padding: 36px 36px 32px;
}

/* Drop zone
-------------------------------------- */

.i2b-drop-zone {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 38px 24px;
    border: 2px dashed var(--i2b-border-strong);
    border-radius: var(--i2b-radius-sm);
    background: var(--i2b-soft);
    color: var(--headline-fcolor, #111);
    cursor: pointer;
    transition: border-color var(--i2b-transition), background var(--i2b-transition), transform var(--i2b-transition);
}

.i2b-drop-zone:hover,
.i2b-drop-zone:focus-visible {
    border-color: var(--i2b-accent);
    background: color-mix(in srgb, var(--i2b-accent) 5%, var(--i2b-soft));
    outline: none;
}

.i2b-drop-zone.is-drag-over {
    border-color: var(--i2b-accent);
    background: var(--i2b-accent-light);
    transform: scale(1.005);
}

.i2b-drop-icon {
    width: 44px;
    height: 44px;
    color: var(--i2b-accent);
}

.i2b-drop-icon svg {
    width: 100%;
    height: 100%;
}

.i2b-drop-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.i2b-drop-pick {
    color: var(--i2b-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.i2b-drop-hint {
    margin: 0;
    font-size: 0.85rem;
    color: var(--excerpt-color);
}

/* Error toast
-------------------------------------- */

.i2b-error {
    margin-top: 14px;
    padding: 10px 14px;
    font-size: 0.88rem;
    color: var(--i2b-danger);
    background: var(--i2b-danger-light);
    border-radius: var(--i2b-radius-xs);
}

/* Result cards
-------------------------------------- */

.i2b-cards {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 22px;
}

.i2b-card {
    border: 1px solid var(--i2b-border-strong);
    border-radius: var(--i2b-radius-sm);
    background: var(--i2b-surface);
    overflow: hidden;
}

.i2b-card-head {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: 14px;
    align-items: start;
    padding: 16px;
    border-bottom: 1px solid var(--i2b-border);
    background: var(--i2b-soft);
}

.i2b-thumb {
    width: 80px;
    height: 80px;
    border-radius: var(--i2b-radius-xs);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--i2b-border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
}

.i2b-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.i2b-meta {
    min-width: 0;
}

.i2b-filename {
    margin: 0 0 4px;
    font-size: 0.95rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.i2b-meta-row {
    margin: 0;
    font-size: 0.82rem;
    color: var(--excerpt-color);
    line-height: 1.5;
}

.i2b-meta-row strong {
    color: var(--headline-fcolor, #111);
    font-weight: 600;
}

.i2b-card-remove {
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 6px;
    color: var(--excerpt-color);
    border-radius: 6px;
    transition: background var(--i2b-transition), color var(--i2b-transition);
    align-self: start;
}

.i2b-card-remove:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--i2b-danger);
}

.i2b-card-remove svg {
    width: 16px;
    height: 16px;
}

/* Size readout + savings badge
-------------------------------------- */

.i2b-size-readout {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    font-size: 0.85rem;
}

.i2b-size-original {
    color: var(--excerpt-color);
}

.i2b-size-arrow {
    color: var(--excerpt-color);
}

.i2b-size-output {
    font-weight: 600;
    color: var(--headline-fcolor, #111);
}

.i2b-savings-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1;
    background: var(--i2b-soft);
    color: var(--excerpt-color);
    transition: background var(--i2b-transition), color var(--i2b-transition);
}

.i2b-savings-badge[data-tier="great"] {
    background: var(--i2b-good-light);
    color: var(--i2b-good);
}

.i2b-savings-badge[data-tier="good"] {
    background: var(--i2b-good-light);
    color: var(--i2b-good);
}

.i2b-savings-badge[data-tier="warn"] {
    background: var(--i2b-warn-light);
    color: var(--i2b-warn);
}

.i2b-savings-badge.is-pulse {
    animation: i2bPulse 1s ease-out 1;
}

@keyframes i2bPulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.45); }
    50% { transform: scale(1.08); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.i2b-base64-len {
    color: var(--excerpt-color);
}

.i2b-base64-len strong {
    color: var(--headline-fcolor, #111);
    font-weight: 600;
}

/* Re-encode controls panel
-------------------------------------- */

.i2b-controls {
    padding: 14px 16px;
    background: var(--i2b-soft);
    border-bottom: 1px solid var(--i2b-border);
    display: grid;
    grid-template-columns: minmax(140px, auto) 1fr;
    gap: 12px 18px;
    align-items: center;
}

.i2b-controls-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--headline-fcolor, #111);
}

.i2b-format-select {
    padding: 8px 12px;
    font-size: 0.88rem;
    background: #fff;
    border: 1px solid var(--i2b-border-strong);
    border-radius: var(--i2b-radius-xs);
    color: var(--headline-fcolor, #111);
    cursor: pointer;
}

.i2b-format-select:focus-visible {
    outline: 2px solid var(--i2b-accent);
    outline-offset: 1px;
}

.i2b-quality-row {
    display: grid;
    grid-template-columns: minmax(140px, auto) 1fr 48px;
    gap: 12px;
    align-items: center;
}

.i2b-quality-row[hidden] {
    display: none;
}

.i2b-quality-slider {
    width: 100%;
    accent-color: var(--i2b-accent);
}

.i2b-quality-value {
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    text-align: right;
    color: var(--headline-fcolor, #111);
    font-size: 0.9rem;
}

.i2b-format-note {
    font-size: 0.8rem;
    color: var(--excerpt-color);
    grid-column: 1 / -1;
    margin: 2px 0 0;
}

/* Snippet tabs
-------------------------------------- */

.i2b-snippets {
    padding: 16px;
}

.i2b-tabs {
    display: flex;
    gap: 2px;
    margin-bottom: 10px;
    overflow-x: auto;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--i2b-border);
}

.i2b-tab {
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--excerpt-color);
    background: transparent;
    border: 0;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--i2b-transition), border-color var(--i2b-transition);
    margin-bottom: -1px;
}

.i2b-tab:hover {
    color: var(--headline-fcolor, #111);
}

.i2b-tab.is-active {
    color: var(--i2b-accent);
    border-bottom-color: var(--i2b-accent);
}

.i2b-tab:focus-visible {
    outline: 2px solid var(--i2b-accent);
    outline-offset: 2px;
    border-radius: 4px;
}

.i2b-snippet-box {
    position: relative;
    background: #0f172a;
    color: #e2e8f0;
    border-radius: var(--i2b-radius-xs);
    padding: 14px 16px;
    font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', 'Consolas', 'Monaco', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
    word-break: break-all;
    white-space: pre-wrap;
    max-height: 200px;
    overflow: auto;
}

.i2b-snippet-box[data-state="encoding"] {
    color: #94a3b8;
    font-style: italic;
}

.i2b-copy-row {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.i2b-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    font-size: 0.88rem;
    font-weight: 600;
    color: #fff;
    background: var(--i2b-accent-dark);
    border: 0;
    border-radius: var(--i2b-radius-xs);
    cursor: pointer;
    transition: background var(--i2b-transition), transform var(--i2b-transition), box-shadow var(--i2b-transition);
}

.i2b-copy-btn:hover {
    background: #0c5e75;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(14, 116, 144, 0.25);
}

.i2b-copy-btn:focus-visible {
    outline: 2px solid var(--i2b-accent);
    outline-offset: 2px;
}

.i2b-copy-btn[data-state="copied"] {
    background: var(--i2b-good);
}

.i2b-copy-btn svg {
    width: 14px;
    height: 14px;
}

/* Bottom actions
-------------------------------------- */

.i2b-actions {
    display: flex;
    justify-content: center;
    margin-top: 22px;
}

.i2b-secondary {
    padding: 10px 18px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--headline-fcolor, #111);
    background: var(--i2b-soft);
    border: 1px solid var(--i2b-border-strong);
    border-radius: var(--i2b-radius-xs);
    cursor: pointer;
    transition: background var(--i2b-transition), border-color var(--i2b-transition);
}

.i2b-secondary:hover {
    background: #e9eaee;
    border-color: #d1d5db;
}

.i2b-secondary:focus-visible {
    outline: 2px solid var(--i2b-accent);
    outline-offset: 2px;
}

/* Toast
-------------------------------------- */

.i2b-toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.i2b-toast {
    padding: 10px 16px;
    font-size: 0.88rem;
    color: #fff;
    background: var(--i2b-accent-dark);
    border-radius: var(--i2b-radius-xs);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
    animation: i2bToastIn 0.25s ease;
}

@keyframes i2bToastIn {
    from { transform: translateY(8px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Sections below the tool card — separator pattern
-------------------------------------- */

.i2b-seo-content,
.i2b-faq {
    margin-top: 54px;
    padding-top: 36px;
    border-top: 1px solid var(--i2b-border);
}

/* FAQ — flat inner per design rule
-------------------------------------- */

.i2b-faq-inner {
    padding: 0;
}

.i2b-faq-label {
    display: inline-block;
    margin-bottom: 8px;
    padding: 4px 12px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--i2b-accent-dark);
    background: var(--i2b-accent-light);
    border-radius: 999px;
}

.i2b-faq-title {
    margin: 0 0 22px;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.i2b-faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.i2b-faq-item {
    border: 1px solid var(--i2b-border);
    border-radius: var(--i2b-radius-sm);
    background: var(--i2b-surface);
    overflow: hidden;
    transition: border-color var(--i2b-transition), box-shadow var(--i2b-transition);
}

.i2b-faq-item:hover {
    border-color: color-mix(in srgb, var(--i2b-accent) 40%, var(--i2b-border-strong));
}

.i2b-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 16px 18px;
    background: transparent;
    border: 0;
    cursor: pointer;
    text-align: left;
    font-size: 0.96rem;
    font-weight: 600;
    color: var(--headline-fcolor, #111);
    transition: background var(--i2b-transition);
}

.i2b-faq-question:hover {
    background: var(--i2b-soft);
}

.i2b-faq-question:focus-visible {
    outline: 2px solid var(--i2b-accent);
    outline-offset: -2px;
}

.i2b-faq-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    color: var(--excerpt-color);
    transition: transform var(--i2b-transition), color var(--i2b-transition);
    flex-shrink: 0;
}

.i2b-faq-question[aria-expanded="true"] .i2b-faq-toggle {
    transform: rotate(180deg);
    color: var(--i2b-accent);
}

.i2b-faq-toggle svg {
    width: 16px;
    height: 16px;
}

.i2b-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--i2b-transition);
}

.i2b-faq-answer-inner {
    padding: 0 18px 16px;
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--excerpt-color);
}

.i2b-faq-answer-inner p {
    margin: 0;
}

/* Responsive
-------------------------------------- */

@media (max-width: 767px) {
    .i2b-tool-card {
        padding: 22px 18px 20px;
    }

    .i2b-card-head {
        grid-template-columns: 64px 1fr auto;
        gap: 12px;
        padding: 14px;
    }

    .i2b-thumb {
        width: 64px;
        height: 64px;
    }

    .i2b-controls {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .i2b-quality-row {
        grid-template-columns: minmax(80px, auto) 1fr 40px;
    }

    .i2b-snippet-box {
        font-size: 0.78rem;
        padding: 12px;
    }

    /* Mobile mustn't re-introduce padding on .faq-inner — design rule */
    .i2b-faq-inner {
        padding: 0;
    }

    .i2b-seo-content,
    .i2b-faq {
        margin-top: 42px;
        padding-top: 28px;
    }
}