@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   File Forge — design system (Vercel-inspired: stark ink-on-near-white,
   a single hero mesh gradient as the only decoration, hairline borders,
   stacked shadows, geometric sans + mono for technical labels).
   ============================================================ */

:root {
    /* Surfaces */
    --canvas: #ffffff;
    --canvas-soft: #fafafa;
    --canvas-soft-2: #f5f5f5;

    /* Ink / text */
    --ink: #171717;
    --body-text: #4d4d4d;
    --mute: #888888;
    --on-primary: #ffffff;

    /* Hairlines */
    --hairline: #ebebeb;
    --hairline-strong: #d4d4d4;

    /* Link / accent (the only flat color outside the gradient) */
    --link: #0070f3;
    --link-deep: #0761d1;

    /* Semantic */
    --success: #0070f3;
    --success-tint: rgba(0, 112, 243, 0.08);
    --error: #ee0000;
    --warning: #f5a623;

    /* Brand mesh-gradient stops */
    --grad-develop-start: #007cf0;
    --grad-develop-end: #00dfd8;
    --grad-preview-start: #7928ca;
    --grad-preview-end: #ff0080;
    --grad-ship-start: #ff4d4d;
    --grad-ship-end: #f9cb28;

    /* Radii */
    --r-xs: 4px;
    --r-sm: 6px;
    --r-md: 8px;
    --r-lg: 12px;
    --r-xl: 16px;
    --r-pill: 100px;
    --r-full: 9999px;

    /* Stacked elevation (calm, multi-offset — never a single heavy drop) */
    --shadow-1: 0 0 0 1px rgba(0, 0, 0, 0.07);
    --shadow-2: 0 0 0 1px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.03);
    --shadow-3: 0 0 0 1px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04), 0 8px 16px -8px rgba(0, 0, 0, 0.08);
    --shadow-4: 0 0 0 1px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.05), 0 14px 24px -6px rgba(0, 0, 0, 0.10);
    --shadow-5: 0 0 0 1px rgba(0, 0, 0, 0.06), 0 8px 16px -4px rgba(0, 0, 0, 0.08), 0 24px 32px -8px rgba(0, 0, 0, 0.12);

    /* Fonts */
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;

    /* Tool icon-tile accents */
    --accent-pdf: #ef4444;
    --accent-word: #0070f3;
    --accent-excel: #22c55e;
    --accent-ppt: #f97316;
    --accent-image: #ec4899;
    --accent-workflow: #7928ca;

    /* Back-compat aliases (old variable names → new system) */
    --primary: var(--ink);
    --primary-hover: #000000;
    --bg-dark: var(--canvas);
    --card-bg: var(--canvas);
    --border: var(--hairline);
    --text: var(--ink);
    --text-muted: var(--body-text);
}

[data-theme="dark"] {
    --canvas: #121212;
    --canvas-soft: #1a1a1a;
    --canvas-soft-2: #242424;
    --ink: #ffffff;
    --body-text: #b3b3b3;
    --mute: #888888;
    --on-primary: #121212;
    --hairline: rgba(255, 255, 255, 0.1);
    --hairline-strong: rgba(255, 255, 255, 0.2);
    --link: #3291ff;
    --link-deep: #0070f3;
    --primary-hover: #333333;

    --shadow-1: 0 0 0 1px rgba(255, 255, 255, 0.1);
    --shadow-2: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-3: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 2px 4px rgba(0, 0, 0, 0.5), 0 8px 16px -8px rgba(0, 0, 0, 0.5);
    --shadow-4: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 2px 6px rgba(0, 0, 0, 0.5), 0 14px 24px -6px rgba(0, 0, 0, 0.5);
    --shadow-5: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 8px 16px -4px rgba(0, 0, 0, 0.5), 0 24px 32px -8px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .tool-card,
[data-theme="dark"] .action-card,
[data-theme="dark"] .drop-zone,
[data-theme="dark"] .options-panel,
[data-theme="dark"] .result-display,
[data-theme="dark"] .theme-toggle {
    background: rgba(18, 18, 18, 0.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-sans);
}

html {
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body {
    background-color: var(--canvas-soft);
    color: var(--ink);
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2.5rem 1rem 4rem;
    letter-spacing: -0.011em;
}

.theme-toggle {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    color: var(--ink);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-1);
    transition: all 0.2s;
    z-index: 100;
}

.theme-toggle:hover {
    box-shadow: var(--shadow-2);
    transform: translateY(-1px);
}

::selection {
    background: var(--ink);
    color: #f2f2f2;
}

/* ── Hero mesh gradient (the brand's only decoration, at hero scale) ── */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 720px;
    z-index: -1;
    overflow: hidden;
    filter: blur(90px) saturate(1.1);
    opacity: 0.5;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 100%);
}

.blob {
    position: absolute;
    border-radius: 50%;
    opacity: 0.55;
    animation: move 22s infinite alternate ease-in-out;
}

.blob-1 {
    width: 460px;
    height: 460px;
    background: radial-gradient(circle at 30% 30%, var(--grad-develop-start), var(--grad-develop-end));
    top: -160px;
    left: -60px;
}

.blob-2 {
    width: 520px;
    height: 520px;
    background: radial-gradient(circle at 50% 50%, var(--grad-preview-start), var(--grad-preview-end));
    top: -220px;
    right: -40px;
    animation-duration: 26s;
}

.blob-3 {
    width: 360px;
    height: 360px;
    background: radial-gradient(circle at 50% 50%, var(--grad-ship-start), var(--grad-ship-end));
    top: -120px;
    left: 48%;
    animation-duration: 18s;
}

@keyframes move {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(60px, 40px);
    }
}

.app-container {
    width: 100%;
    max-width: 1040px;
    z-index: 10;
}

.view {
    display: none;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.view.active {
    display: flex;
    flex-direction: column;
    opacity: 1;
    transform: translateY(0);
}

/* ── Hero ── */
.hero {
    text-align: center;
    margin-bottom: 2rem;
    padding-top: 0.75rem;
}

.hero h1 {
    font-size: clamp(2rem, 5.5vw, 2.75rem);
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: 0.75rem;
    color: var(--ink);
}

.hero .accent {
    background: linear-gradient(100deg, var(--grad-develop-start) 0%, var(--grad-preview-start) 42%, var(--grad-preview-end) 70%, var(--grad-ship-end) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ── Tool grid (home) ── */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1.25rem;
}

@media (min-width: 600px) {
    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .tool-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tool-card {
    background: var(--canvas);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-2);
    padding: 1.75rem;
    text-align: center;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card:hover:not(.disabled) {
    transform: translateY(-4px);
    box-shadow: var(--shadow-4);
}

.tool-card.disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: var(--r-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    font-size: 1.4rem;
}

.icon-wrapper.pdf {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-pdf);
}

.icon-wrapper.word {
    background: rgba(0, 112, 243, 0.1);
    color: var(--accent-word);
}

.icon-wrapper.excel {
    background: rgba(34, 197, 94, 0.1);
    color: var(--accent-excel);
}

.icon-wrapper.ppt {
    background: rgba(249, 115, 22, 0.1);
    color: var(--accent-ppt);
}

.icon-wrapper.image {
    background: rgba(236, 72, 153, 0.1);
    color: var(--accent-image);
}

.icon-wrapper.workflow {
    background: rgba(121, 40, 202, 0.1);
    color: var(--accent-workflow);
}

.tool-card h3 {
    margin-bottom: 0.4rem;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.tool-card p {
    font-size: 0.9rem;
    color: var(--body-text);
    line-height: 1.5;
}

.badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: var(--r-full);
    background: var(--canvas-soft-2);
    color: var(--body-text);
    border: 1px solid var(--hairline);
}

/* ── Drill-down ── */
.breadcrumb {
    margin-bottom: 1.75rem;
}

.back-btn {
    background: none;
    border: none;
    color: var(--body-text);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s;
}

.back-btn:hover {
    color: var(--ink);
}

.drill-down-content {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 2rem;
}

.drop-zone {
    background: var(--canvas);
    border: 1.5px dashed var(--hairline-strong);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-1);
    height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    text-align: center;
    padding: 1.5rem;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--ink);
    background: var(--canvas-soft);
}

.upload-icon {
    font-size: 2.5rem;
    color: var(--ink);
    margin-bottom: 1rem;
}

.drop-zone p {
    color: var(--body-text);
}

.browse-text {
    color: var(--link);
    font-weight: 600;
}

.file-info {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--ink);
    font-weight: 500;
}

.file-info i {
    color: var(--accent-pdf);
}

/* ── Actions panel ── */
.actions-panel h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.action-card {
    background: var(--canvas);
    box-shadow: var(--shadow-1);
    padding: 1.05rem 1.2rem;
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    gap: 1.1rem;
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.2s, background 0.2s;
}

.action-card:hover {
    background: var(--canvas-soft);
    box-shadow: var(--shadow-3);
    transform: translateY(-1px);
}

.action-card i {
    font-size: 1.4rem;
    width: 40px;
    text-align: center;
    color: var(--ink);
}

.action-card h4 {
    margin-bottom: 0.15rem;
    font-size: 0.98rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}

.action-card p {
    font-size: 0.82rem;
    color: var(--mute);
}

/* ── Forms & option panels ── */
.password-area {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: stretch;
}

.password-area input,
.password-area select,
.password-area textarea {
    width: 100%;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    padding: 0.7rem 0.85rem;
    color: var(--ink);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.password-area input::placeholder,
.password-area textarea::placeholder {
    color: var(--mute);
}

.password-area input:focus,
.password-area select:focus,
.password-area textarea:focus {
    border-color: var(--ink);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.06);
}

.password-area label {
    font-size: 0.85rem;
    color: var(--body-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.primary-btn {
    background: var(--link);
    color: #ffffff;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--r-pill);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.2s, transform 0.05s, box-shadow 0.2s;
    align-self: flex-start;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.primary-btn:hover {
    background: var(--link-deep);
    box-shadow: 0 4px 14px rgba(0, 112, 243, 0.35);
}

.primary-btn:active {
    transform: translateY(1px);
}

.status-display {
    margin-top: 2rem;
    text-align: center;
}

.loader {
    width: 28px;
    height: 28px;
    border: 2.5px solid var(--hairline);
    border-top-color: var(--ink);
    border-radius: 50%;
    animation: spin 0.8s infinite linear;
    margin: 0 auto 1rem;
}

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

.status-display p {
    color: var(--body-text);
    font-size: 0.9rem;
}

.result-display {
    margin-top: 1.5rem;
    text-align: center;
    padding: 1.75rem;
    background: var(--canvas);
    box-shadow: var(--shadow-2);
    border-radius: var(--r-lg);
}

.result-display p {
    color: var(--ink);
}

.success-icon {
    font-size: 2.25rem;
    color: var(--success);
    margin-bottom: 0.85rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    margin-top: 1.25rem;
}

.hidden {
    display: none !important;
}

/* ── AI toggle ── */
.options-panel {
    margin-bottom: 1.25rem;
    padding: 0.9rem 1rem;
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--r-md);
}

#convert-password-area .options-panel {
    margin-bottom: 0.25rem;
}

.toggle-control {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: 0.85rem;
    user-select: none;
}

.toggle-control input {
    display: none;
}

.toggle-control .control {
    width: 42px;
    height: 24px;
    background: var(--hairline-strong);
    border-radius: var(--r-full);
    position: relative;
    transition: background 0.25s;
    flex-shrink: 0;
}

.toggle-control .control:after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    transition: transform 0.25s;
}

.toggle-control input:checked+.control {
    background: var(--ink);
}

.toggle-control input:checked+.control:after {
    transform: translateX(18px);
}

.toggle-control .label {
    font-size: 0.88rem;
    color: var(--ink);
}

/* ── Quality slider ── */
.quality-control {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.quality-control .label {
    font-size: 0.88rem;
    color: var(--ink);
}

.quality-control input[type="range"],
.password-area input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    background: var(--hairline);
    border-radius: var(--r-full);
    outline: none;
    padding: 0;
}

.quality-control input[type="range"]::-webkit-slider-thumb,
.password-area input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--ink);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s;
}

.quality-control input[type="range"]::-webkit-slider-thumb:hover,
.password-area input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.quality-control input[type="range"]::-moz-range-thumb,
.password-area input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--ink);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* ── Image resizer ── */
.switch-toggle {
    display: flex;
    justify-content: center;
    background: var(--canvas-soft-2);
    border-radius: var(--r-full);
    padding: 0.3rem;
    margin-bottom: 1.5rem;
    position: relative;
    border: 1px solid var(--hairline);
}

.switch-toggle input {
    display: none;
}

.switch-toggle label {
    flex: 1;
    text-align: center;
    padding: 0.5rem;
    z-index: 1;
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--body-text);
    border-radius: var(--r-full);
}

.switch-toggle input:checked+label {
    color: var(--on-primary);
    background: var(--ink);
}

.mode-options {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

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

.select-control {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.select-control select {
    background: var(--canvas);
    color: var(--ink);
    border: 1px solid var(--hairline);
    padding: 0.7rem 0.85rem;
    border-radius: var(--r-sm);
    outline: none;
    cursor: pointer;
    font-size: 0.9rem;
}

.select-control select option {
    background: var(--canvas);
    color: var(--ink);
}

.resize-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.resize-inputs input {
    flex: 1;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    padding: 0.7rem;
    color: var(--ink);
    outline: none;
    text-align: center;
}

.resize-inputs .separator {
    color: var(--mute);
    font-weight: 600;
}

.crop-editor-container {
    margin-top: 1rem;
    max-height: 500px;
    background: var(--canvas-soft-2);
    border: 1px solid var(--hairline);
    border-radius: var(--r-lg);
    overflow: hidden;
}

#crop-image-preview {
    max-width: 100%;
    max-height: 500px;
    display: block;
}

.helper-text {
    font-size: 0.85rem;
    color: var(--mute);
    margin-bottom: 0.5rem;
    text-align: center;
}

/* ── Workflow builder ── */
.workflow-builder {
    padding: 1rem 0;
}

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

.workflow-header h2 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.workflow-header h2 i {
    color: var(--accent-workflow);
}

.workflow-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.workflow-input-section h3,
.workflow-palette-section h3,
.workflow-canvas-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-family: var(--font-mono);
    color: var(--mute);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.workflow-drop {
    height: 180px;
}

.step-palette {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.step-item {
    background: var(--canvas);
    box-shadow: var(--shadow-1);
    border-radius: var(--r-md);
    padding: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: grab;
    transition: box-shadow 0.2s, transform 0.2s;
    user-select: none;
}

.step-item:hover {
    box-shadow: var(--shadow-3);
    transform: translateY(-2px);
}

.step-item:active {
    cursor: grabbing;
}

.step-item i {
    font-size: 1.05rem;
    color: var(--accent-workflow);
    width: 24px;
    text-align: center;
}

.step-item span {
    font-size: 0.85rem;
    font-weight: 500;
}

.workflow-canvas-section {
    margin-bottom: 1.5rem;
}

.workflow-canvas {
    background: var(--canvas);
    border: 1.5px dashed var(--hairline-strong);
    border-radius: var(--r-lg);
    min-height: 120px;
    padding: 1rem;
    transition: border-color 0.25s, background 0.25s;
}

.workflow-canvas.drag-over {
    border-color: var(--accent-workflow);
    background: rgba(121, 40, 202, 0.04);
}

.canvas-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100px;
    color: var(--mute);
    gap: 0.5rem;
}

.canvas-placeholder i {
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.workflow-steps {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0.5rem 0;
}

.workflow-step-card {
    background: rgba(121, 40, 202, 0.07);
    border: 1px solid rgba(121, 40, 202, 0.3);
    border-radius: var(--r-md);
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    animation: stepAppear 0.3s ease;
}

@keyframes stepAppear {
    from {
        opacity: 0;
        transform: scale(0.85);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.workflow-step-card i {
    color: var(--accent-workflow);
}

.workflow-step-card .step-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink);
}

.workflow-step-card .remove-step {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--error);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity 0.2s;
}

.workflow-step-card:hover .remove-step {
    opacity: 1;
}

.workflow-step-card .config-btn {
    background: none;
    border: none;
    color: var(--mute);
    cursor: pointer;
    padding: 0.2rem;
    margin-left: 0.3rem;
    transition: color 0.2s;
}

.workflow-step-card .config-btn:hover {
    color: var(--ink);
}

.step-arrow {
    color: var(--hairline-strong);
    font-size: 1.1rem;
}

.workflow-run-section {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.large-btn {
    padding: 0.9rem 2.25rem;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.secondary-btn {
    background: var(--canvas);
    color: var(--ink);
    border: 1px solid var(--hairline);
    padding: 0.75rem 1.5rem;
    border-radius: var(--r-pill);
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s, box-shadow 0.2s;
}

.secondary-btn:hover {
    background: var(--canvas-soft);
    box-shadow: var(--shadow-2);
}

/* ── Step config modal ── */
.step-config-modal {
    position: fixed;
    inset: 0;
    background: rgba(23, 23, 23, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.step-config-modal.hidden {
    display: none !important;
}

.modal-content {
    background: var(--canvas);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-5);
    padding: 1.75rem;
    min-width: 350px;
    max-width: 450px;
}

.modal-content h4 {
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.modal-content input,
.modal-content select {
    width: 100%;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    padding: 0.7rem 0.85rem;
    color: var(--ink);
    margin-bottom: 1rem;
    outline: none;
}

.modal-content input:focus,
.modal-content select:focus {
    border-color: var(--ink);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.06);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1rem;
}

/* ── Workflow progress states ── */
.workflow-step-card.processing {
    border-color: var(--accent-workflow);
    background: rgba(121, 40, 202, 0.12);
    animation: processingPulse 1.6s ease-in-out infinite;
}

.workflow-step-card.processing i {
    color: var(--accent-workflow);
    animation: spinIcon 1s linear infinite;
}

.workflow-step-card.completed {
    border-color: var(--success);
    background: var(--success-tint);
}

.workflow-step-card.completed i {
    color: var(--success);
}

.workflow-step-card.pending {
    opacity: 0.5;
    filter: grayscale(40%);
    transform: scale(0.98);
}

.step-arrow.processing {
    color: var(--accent-workflow);
    animation: arrowPulse 1s ease-in-out infinite;
}

.step-arrow.completed {
    color: var(--success);
}

@keyframes processingPulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(121, 40, 202, 0.25);
    }

    50% {
        box-shadow: 0 0 0 6px rgba(121, 40, 202, 0);
    }
}

@keyframes arrowPulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

@keyframes spinIcon {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

#workflow-status-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.workflow-step-progress {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--mute);
}

/* ── Compress level picker ── */
.compress-area {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.compress-area input[type="password"] {
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    padding: 0.7rem 0.85rem;
    color: var(--ink);
    outline: none;
    font-size: 0.9rem;
}

.compress-area input[type="password"]::placeholder {
    color: var(--mute);
}

.compress-levels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.compress-level-option {
    cursor: pointer;
}

.compress-level-option input[type="radio"] {
    display: none;
}

.compress-level-option .level-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 0.95rem 0.5rem;
    background: var(--canvas);
    border: 1.5px solid var(--hairline);
    border-radius: var(--r-lg);
    transition: all 0.2s;
    text-align: center;
}

.compress-level-option .level-card i {
    font-size: 1.3rem;
    color: var(--mute);
    transition: color 0.2s;
}

.compress-level-option .level-card strong {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink);
}

.compress-level-option .level-card small {
    font-size: 0.72rem;
    color: var(--mute);
}

.compress-level-option input[type="radio"]:checked+.level-card {
    border-color: var(--ink);
    background: var(--canvas-soft);
    box-shadow: 0 0 0 1px var(--ink);
}

.compress-level-option input[type="radio"]:checked+.level-card i {
    color: var(--ink);
}

.compress-level-option:hover .level-card {
    border-color: var(--hairline-strong);
}

/* Compression stats in result */
.compress-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0.85rem 0;
    flex-wrap: wrap;
}

.compress-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.6rem 1rem;
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--r-md);
    min-width: 90px;
}

.compress-stat .stat-label {
    font-size: 0.7rem;
    color: var(--mute);
    margin-bottom: 0.2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-mono);
}

.compress-stat .stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
}

.compress-stat-arrow {
    font-size: 1.1rem;
    color: var(--mute);
}

.reduction-badge {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    background: var(--success-tint);
    border: 1px solid rgba(0, 112, 243, 0.25);
    border-radius: var(--r-full);
    color: var(--success);
    font-weight: 600;
    font-size: 1rem;
    margin-top: 0.25rem;
}

/* ── Accessibility focus ── */
.tool-card:focus-visible,
.action-card:focus-visible,
.drop-zone:focus-visible,
.step-item:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 3px;
}

/* ── Trust strip (hero) ── */
.trust-strip {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0rem 0.25rem;
    font-size: 0.8rem;
    color: var(--body-text);
    background: var(--canvas-soft-2);
    border: 1px solid var(--hairline);
    border-radius: var(--r-full);
    padding: 0.3rem 0.85rem;
}

.trust-strip span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.15rem 0.55rem;
    white-space: nowrap;
}

.trust-strip span + span {
    border-left: 1px solid var(--hairline);
}

.trust-strip i {
    color: var(--ink);
    font-size: 0.75rem;
}

.trust-strip a {
    color: var(--link);
    text-decoration: none;
}

.trust-strip a:hover {
    text-decoration: underline;
}

/* ── Site footer ── */
.site-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--hairline);
}

/* Reserved-height ad container — keeps Cumulative Layout Shift (CLS) near 0 by
   reserving the ad's footprint before it loads asynchronously. When AdSense is
   not configured the server emits nothing here, so this rule simply never applies. */
.ad-slot {
    display: block;
    min-height: 280px;
    margin: 2.5rem auto;
    max-width: 100%;
    overflow: hidden;
    text-align: center;
}

.ad-slot ins {
    display: block;
    min-height: 280px;
}

@media (max-width: 600px) {
    .ad-slot,
    .ad-slot ins {
        min-height: 250px;
    }
}

.footer-cols {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    color: var(--ink);
    margin-bottom: 0.75rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-family: var(--font-mono);
    font-weight: 500;
}

.footer-col a {
    display: block;
    color: var(--body-text);
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-col a:hover {
    color: var(--ink);
}

.footer-note {
    color: var(--mute);
    font-size: 0.8rem;
    text-align: center;
    padding-bottom: 1rem;
}

/* ── SEO / info pages ── */
body.seo-page {
    display: block;
}

.page-wrap {
    max-width: 760px;
    margin: 0 auto;
    padding: 1rem;
    line-height: 1.7;
}

.page-nav {
    margin-bottom: 2rem;
}

.page-nav a {
    color: var(--body-text);
    text-decoration: none;
    font-size: 0.9rem;
}

.page-nav a:hover {
    color: var(--ink);
}

.page-wrap h1 {
    font-size: clamp(2rem, 5vw, 2.6rem);
    margin-bottom: 0.75rem;
    line-height: 1.1;
    letter-spacing: -0.035em;
    font-weight: 600;
    color: var(--ink);
}

.page-wrap h2 {
    margin: 2.25rem 0 0.75rem;
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.page-wrap h3 {
    margin: 1.5rem 0 0.4rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--ink);
}

.page-wrap p,
.page-wrap li {
    color: var(--body-text);
}

.page-wrap .lede {
    font-size: 1.15rem;
    color: var(--ink);
}

.page-wrap ul,
.page-wrap ol {
    padding-left: 1.5rem;
    margin: 0.75rem 0;
}

.page-wrap li {
    margin-bottom: 0.5rem;
}

.page-wrap a {
    color: var(--link);
}

.page-wrap code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--canvas-soft-2);
    border: 1px solid var(--hairline);
    border-radius: var(--r-xs);
    padding: 0.1rem 0.35rem;
}

.page-wrap .cta {
    display: inline-block;
    margin: 1.25rem 0;
    padding: 0.8rem 1.75rem;
    background: var(--ink);
    color: #fff;
    border-radius: var(--r-pill);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}

.page-wrap .cta:hover {
    background: var(--primary-hover);
}

.page-footer {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--hairline);
    font-size: 0.85rem;
    color: var(--mute);
    text-align: center;
}

.page-footer a {
    color: var(--body-text);
    text-decoration: none;
    margin: 0 0.4rem;
}

.page-footer a:hover {
    color: var(--ink);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .drill-down-content {
        grid-template-columns: 1fr;
    }

    .workflow-layout {
        grid-template-columns: 1fr;
    }

    .workflow-steps {
        justify-content: center;
    }
}