/* PDF Tools — brutalist styling matching randomstorms.net */

:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --accent-hover: #ff3300;
    --secondary-text: #333333;
    --muted-text: #666666;
    --card-bg: #ffffff;
    --card-hover: #f0f0f0;
    --nav-bg: rgba(255, 255, 255, 0.95);

    --font-main: "Space Mono", "SF Mono", "Fira Code", monospace;

    --gap-xs: 6px;
    --gap-sm: 12px;
    --gap-md: 24px;
    --gap-lg: 36px;
    --gap-xl: 56px;

    --content-width: 960px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--text-color);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--accent-hover);
}

img, canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

/* ─── Header ─── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 3px solid #000;
}

.site-header-inner {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--gap-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.brand {
    font-size: 0.85rem;
    font-weight: 700;
    color: #000;
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.brand:hover {
    color: var(--accent-hover);
}

.site-header-links {
    display: flex;
    gap: var(--gap-md);
}

.site-header-links a {
    color: var(--text-color);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color 0.15s ease;
}

.site-header-links a:hover {
    color: var(--accent-hover);
}

/* ─── Page Container ─── */
.page-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--gap-md);
}

/* ─── Hero ─── */
.hero {
    padding: var(--gap-xl) 0;
    border-bottom: 3px solid #000;
}

.hero h1 {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    margin-bottom: var(--gap-sm);
}

.hero p {
    color: var(--secondary-text);
    font-size: 0.95rem;
    max-width: 640px;
    line-height: 1.6;
    margin-bottom: var(--gap-sm);
}

.hero p:last-child {
    margin-bottom: 0;
}

.hero .tag {
    display: inline-block;
    padding: 4px 10px;
    border: 2px solid #000;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: var(--gap-md);
}

/* ─── Tool grid (index page) ─── */
.tool-grid {
    padding: var(--gap-xl) 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--gap-md);
}

.tool-card {
    display: block;
    background: var(--card-bg);
    border: 2px solid #000;
    padding: var(--gap-md);
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.15s ease;
}

.tool-card:hover {
    box-shadow: 5px 5px 0 #000;
    transform: translate(-2px, -2px);
    text-decoration: none;
    color: var(--text-color);
}

.tool-card .icon {
    width: 56px;
    height: 56px;
    background: #f0f0f0;
    border: 2px solid #000;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--gap-sm);
    font-size: 1.6rem;
}

.tool-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--gap-xs);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.tool-card p {
    color: var(--secondary-text);
    font-size: 0.85rem;
    line-height: 1.55;
}

/* ─── Tool page ─── */
.tool-page {
    padding: var(--gap-xl) 0;
}

.back-link {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--muted-text);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-decoration: none;
    margin-bottom: var(--gap-md);
}

.back-link:hover {
    color: var(--accent-hover);
}

.tool-page h1 {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    margin-bottom: var(--gap-xs);
}

.tool-page .subtitle {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: var(--gap-lg);
    max-width: 640px;
}

/* ─── Dropzone ─── */
.dropzone {
    border: 3px dashed #000;
    padding: var(--gap-xl) var(--gap-md);
    text-align: center;
    background: var(--card-bg);
    cursor: pointer;
    transition: all 0.15s ease;
}

.dropzone:hover {
    background: var(--card-hover);
}

.dropzone.dragover {
    background: #000;
    color: #fff;
}

.dropzone.dragover .icon,
.dropzone.dragover h3,
.dropzone.dragover p {
    color: #fff;
}

.dropzone .icon {
    font-size: 2rem;
    margin-bottom: var(--gap-sm);
    color: #000;
}

.dropzone h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--gap-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.dropzone p {
    font-size: 0.85rem;
    color: var(--muted-text);
}

.dropzone input[type="file"] {
    display: none;
}

/* ─── File list (merge) ─── */
.file-list {
    margin-top: var(--gap-md);
    display: flex;
    flex-direction: column;
    gap: var(--gap-xs);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    background: var(--card-bg);
    border: 2px solid #000;
    padding: 10px 14px;
    font-size: 0.85rem;
}

.file-item .name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-item .meta {
    color: var(--muted-text);
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.file-item .actions {
    display: flex;
    gap: 4px;
}

.file-item button {
    background: transparent;
    border: 2px solid #000;
    cursor: pointer;
    padding: 2px 8px;
    color: #000;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    transition: all 0.15s ease;
}

.file-item button:hover {
    background: #000;
    color: #fff;
}

.file-item button.danger:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
}

/* ─── Buttons ─── */
.btn-row {
    margin-top: var(--gap-md);
    display: flex;
    gap: var(--gap-sm);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: 2px solid #000;
    background: #000;
    color: #fff;
    font-family: var(--font-main);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn:hover {
    box-shadow: 4px 4px 0 var(--accent-hover);
    transform: translate(-2px, -2px);
}

.btn:disabled {
    background: #cbd5e1;
    border-color: #cbd5e1;
    color: #fff;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-secondary {
    background: #fff;
    color: #000;
}

.btn-secondary:hover {
    background: #000;
    color: #fff;
}

/* ─── Status ─── */
.status {
    margin-top: var(--gap-md);
    padding: 10px 14px;
    border: 2px solid #000;
    font-size: 0.85rem;
    display: none;
}

.status.show {
    display: block;
}

.status.info {
    background: #f0f0f0;
}

.status.error {
    background: var(--accent-hover);
    color: #fff;
    border-color: var(--accent-hover);
}

.status.success {
    background: #000;
    color: #fff;
}

/* ─── Progress ─── */
.progress {
    margin-top: var(--gap-md);
    background: #fff;
    border: 2px solid #000;
    height: 12px;
    overflow: hidden;
    display: none;
}

.progress.show {
    display: block;
}

.progress-bar {
    background: #000;
    height: 100%;
    width: 0%;
    transition: width 0.2s ease;
}

/* ─── Form fields ─── */
label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--gap-xs);
    color: #000;
}

select, input[type="text"], input[type="number"] {
    width: 100%;
    padding: 8px 12px;
    border: 2px solid #000;
    background: #fff;
    font-family: var(--font-main);
    font-size: 0.85rem;
    color: #000;
    appearance: none;
    -webkit-appearance: none;
    border-radius: 0;
}

select {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><polygon points='0,0 12,0 6,8' fill='black'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

select:focus, input:focus {
    outline: none;
    box-shadow: 3px 3px 0 var(--accent-hover);
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-sm);
    margin-top: var(--gap-md);
}

.field {
    margin: 0;
}

#config {
    margin-top: var(--gap-md);
}

#info {
    font-size: 0.8rem;
    color: var(--muted-text);
    letter-spacing: 0.04em;
}

/* ─── Preview (enhance) ─── */
.preview {
    margin-top: var(--gap-md);
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-sm);
}

.preview.show {
    display: grid;
}

.preview-pane {
    background: var(--card-bg);
    border: 2px solid #000;
    overflow: hidden;
}

.preview-pane h4 {
    margin: 0;
    padding: 8px 12px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid #000;
    background: #f0f0f0;
}

.preview-pane canvas {
    width: 100%;
    height: auto;
    display: block;
}

/* ─── Footer ─── */
footer {
    padding: var(--gap-lg) 0 var(--gap-md);
    border-top: 3px solid #000;
    margin-top: var(--gap-xl);
}

.footer-inner {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--gap-md);
    text-align: center;
    font-size: 0.7rem;
    color: var(--muted-text);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.footer-inner a {
    color: var(--muted-text);
}

.footer-inner a:hover {
    color: var(--accent-hover);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
    :root {
        --gap-xl: 40px;
    }

    .hero h1 {
        font-size: 1.6rem;
    }

    .tool-page h1 {
        font-size: 1.5rem;
    }

    .field-row {
        grid-template-columns: 1fr;
    }

    .preview {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
}