/* ============================================================
   PDFora — Base Stylesheet
   ============================================================ */

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --color-primary:    #e63946;
    --color-primary-dk: #c1121f;
    --color-bg:         #ffffff;
    --color-bg-soft:    #f8f9fa;
    --color-text:       #1a1a2e;
    --color-text-muted: #6c757d;
    --color-border:     #dee2e6;
    --color-success:    #2dc653;
    --color-warning:    #ffc107;
    --color-shadow:     0 2px 8px rgba(0,0,0,.08);

    --font-sans:  'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
    --radius:     8px;
    --radius-lg:  16px;
    --container:  1200px;
    --transition: .2s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

img { max-width: 100%; height: auto; }
a   { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Container */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1rem; }

/* ---- Navbar ---- */
.site-header         { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid var(--color-border); box-shadow: var(--color-shadow); }
.navbar              { height: 60px; }
.navbar .container   { display: flex; align-items: center; gap: 1.5rem; height: 100%; }
.navbar__logo        { flex-shrink: 0; line-height: 0; }
.navbar__menu        { display: flex; align-items: center; gap: .5rem; margin-left: auto; position: relative; }
.navbar__link   { padding: .5rem .75rem; border-radius: var(--radius); font-weight: 500; color: var(--color-text); transition: background var(--transition); background: none; border: none; cursor: pointer; font-size: 1rem; }
.navbar__link:hover { background: var(--color-bg-soft); text-decoration: none; }

/* Dropdown */
.navbar__tools-dropdown { position: static; }
/* Bridge pseudo-element fills the gap so hover doesn't break */
.navbar__tools-dropdown::after { content: ''; display: block; position: absolute; top: 100%; left: 0; right: 0; height: 12px; }
.navbar__dropdown {
    display: none;
    position: absolute; top: 100%; right: 0; left: auto; padding-top: 8px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    width: 600px;
    max-width: calc(100vw - 1rem);
    padding: 1rem;
    z-index: 200;
}
.navbar__tools-dropdown.open .navbar__dropdown {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .5rem;
}
.navbar__dropdown-heading { font-size: .75rem; font-weight: 700; text-transform: uppercase; color: var(--color-text-muted); padding: .25rem .5rem; }
.navbar__dropdown-item { display: block; padding: .4rem .5rem; border-radius: var(--radius); font-size: .875rem; color: var(--color-text); }
.navbar__dropdown-item:hover { background: var(--color-bg-soft); text-decoration: none; }

.navbar__toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: .5rem; }
.navbar__toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; }

/* ---- Hero ---- */
.hero { padding: 4rem 1rem; background: linear-gradient(135deg, #fff0f1 0%, #fff 60%); text-align: center; }
.hero__title { font-size: clamp(1.75rem, 4vw, 3rem); font-weight: 700; line-height: 1.2; margin-bottom: 1rem; }
.hero__highlight { color: var(--color-primary); }
.hero__desc { font-size: 1.125rem; color: var(--color-text-muted); max-width: 640px; margin: 0 auto 2rem; }
.hero__stats { display: flex; justify-content: center; gap: 3rem; flex-wrap: wrap; }
.hero__stat strong { display: block; font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.hero__stat span { font-size: .875rem; color: var(--color-text-muted); }

/* ---- Tools Section ---- */
.tools-section { padding: 3rem 1rem; }
.tools-section:nth-child(even) { background: var(--color-bg-soft); }
.section-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; display: flex; align-items: center; gap: .5rem; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }

/* ---- Tool Card ---- */
.tool-card { display: flex; align-items: flex-start; gap: .875rem; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: #fff; transition: box-shadow var(--transition), border-color var(--transition); cursor: pointer; }
.tool-card:hover { box-shadow: var(--color-shadow); border-color: var(--color-primary); text-decoration: none; }
.tool-card__icon { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; flex-shrink: 0; border-radius: var(--radius); background: #fff0f1; color: var(--color-primary); }
.tool-card__body { min-width: 0; flex: 1; }
.tool-card__title { font-size: .9rem; font-weight: 600; color: var(--color-text); margin-bottom: .25rem; }
.tool-card__desc { font-size: .8rem; color: var(--color-text-muted); }
.tool-card__badge { display: inline-block; vertical-align: middle; font-size: .65rem; padding: .1rem .4rem; border-radius: 4px; font-weight: 600; white-space: nowrap; margin-left: .3rem; line-height: 1.4; }
.tool-card__badge--privacy { background: #d4edda; color: #155724; }

/* ---- SVG Icons ---- */
.icon { display: inline-block; vertical-align: middle; flex-shrink: 0; }
.navbar__dropdown-item .icon { color: var(--color-text-muted); margin-right: .35rem; }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .625rem 1.25rem; border-radius: var(--radius); font-weight: 600; font-size: .95rem; cursor: pointer; border: none; transition: all var(--transition); }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dk); text-decoration: none; color: #fff; }
.btn--outline { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: #fff; text-decoration: none; }
.btn--lg { padding: .875rem 2rem; font-size: 1.1rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---- Upload Area ---- */
.upload-area { border: 2px dashed var(--color-border); border-radius: var(--radius-lg); padding: 3rem 2rem; text-align: center; cursor: pointer; transition: all var(--transition); background: var(--color-bg-soft); }
.upload-area:hover, .upload-area.dragover { border-color: var(--color-primary); background: #fff0f1; }
.upload-area__icon { font-size: 3rem; margin-bottom: .75rem; }
.upload-area__title { font-size: 1.125rem; font-weight: 600; margin-bottom: .5rem; }
.upload-area__hint { font-size: .875rem; color: var(--color-text-muted); }

/* ---- Progress ---- */
.progress { height: 8px; background: var(--color-border); border-radius: 4px; overflow: hidden; margin: 1rem 0; }
.progress__bar { height: 100%; background: var(--color-primary); border-radius: 4px; transition: width .3s ease; }

/* ---- USP Section ---- */
.usp-section { padding: 4rem 1rem; background: var(--color-bg-soft); }
.usp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; }
.usp-card { background: #fff; padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
.usp-card__icon { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: #fff0f1; color: var(--color-primary); border-radius: var(--radius); margin-bottom: .75rem; }
.usp-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: .5rem; }
.usp-card p { font-size: .875rem; color: var(--color-text-muted); }

/* ---- Breadcrumb ---- */
.breadcrumb { padding: .75rem 0; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: .25rem; font-size: .875rem; }
.breadcrumb li::after { content: ' / '; color: var(--color-text-muted); margin-left: .25rem; }
.breadcrumb li:last-child::after { content: ''; }
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }

/* ---- FAQ ---- */
.faq-section { padding: 3rem 1rem; }
.faq-section h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item summary { padding: 1rem 0; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: '+'; font-size: 1.25rem; color: var(--color-primary); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 0 1rem; color: var(--color-text-muted); }

/* ---- HowTo Steps ---- */
.howto-section { padding: 3rem 1rem; }
.howto-steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1.5rem; counter-reset: steps; padding-top: .875rem; }
.howto-step { counter-increment: steps; position: relative; padding: 1.5rem 1.25rem 1.25rem; background: var(--color-bg-soft); border-radius: var(--radius-lg); }
.howto-step::before { content: counter(steps); position: absolute; top: -14px; left: 1.25rem; width: 28px; height: 28px; background: var(--color-primary); color: #fff; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: .8rem; line-height: 1; }
.howto-step h3 { font-size: .95rem; font-weight: 600; margin-bottom: .4rem; }
.howto-step p { font-size: .85rem; color: var(--color-text-muted); }

/* ---- Footer ---- */
.site-footer { background: #1a1a2e; color: #ccc; padding: 3rem 1rem 1.5rem; }
.footer__grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 2rem; margin-bottom: 2rem; }
.footer__heading { font-size: .875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: #fff; margin-bottom: .75rem; }
.footer__list { list-style: none; }
.footer__list li { margin-bottom: .4rem; }
.footer__list a { color: #aaa; font-size: .875rem; }
.footer__list a:hover { color: #fff; text-decoration: none; }
.footer__brand p { font-size: .875rem; color: #aaa; margin-top: .75rem; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 1.5rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem; font-size: .8rem; color: #888; }

/* ---- Static Pages ---- */
.page-hero { padding: 3rem 1rem 2rem; background: linear-gradient(135deg, #fff0f1 0%, #fff 60%); text-align: center; }
.page-hero__title { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 700; margin-bottom: .75rem; }
.page-hero__desc { font-size: 1.05rem; color: var(--color-text-muted); max-width: 560px; margin: 0 auto; }

.page-section { padding: 3rem 1rem; }
.page-section--soft { background: var(--color-bg-soft); }

/* About */
.about-mission { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.about-mission__content h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
.about-mission__content p { color: var(--color-text-muted); margin-bottom: .75rem; }
.about-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.about-stat { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.5rem; text-align: center; }
.about-stat strong { display: block; font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.about-stat span { font-size: .875rem; color: var(--color-text-muted); }

.values-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }
.value-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.5rem; }
.value-card__icon { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: #fff0f1; color: var(--color-primary); border-radius: var(--radius); margin-bottom: .75rem; }
.value-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: .4rem; }
.value-card p { font-size: .875rem; color: var(--color-text-muted); }

.about-cta { text-align: center; padding: 3rem 1rem; background: var(--color-bg-soft); border-radius: var(--radius-lg); }
.about-cta h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: .75rem; }
.about-cta p { color: var(--color-text-muted); margin-bottom: 1.5rem; }

/* Contact */
.contact-layout { display: grid; grid-template-columns: 1fr 340px; gap: 2.5rem; align-items: start; }
.contact-form-wrap h2 { font-size: 1.375rem; font-weight: 700; margin-bottom: 1.5rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-label { font-size: .9rem; font-weight: 600; }
.form-label .required { color: var(--color-primary); }
.form-input { padding: .625rem .875rem; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: .95rem; font-family: var(--font-sans); color: var(--color-text); background: #fff; transition: border-color var(--transition); }
.form-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(230, 57, 70, .1); }
.form-textarea { resize: vertical; min-height: 140px; }

.contact-info { display: flex; flex-direction: column; gap: 1rem; }
.contact-info-card { background: var(--color-bg-soft); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.25rem; }
.contact-info-card h3, .contact-info-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: .875rem; }
.contact-info-list { list-style: none; display: flex; flex-direction: column; gap: .875rem; }
.contact-info-list li { display: flex; align-items: flex-start; gap: .75rem; }
.contact-info-list__icon { flex-shrink: 0; color: var(--color-primary); margin-top: 2px; }
.contact-info-list strong { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .15rem; }
.contact-info-list a, .contact-info-list span { font-size: .85rem; color: var(--color-text-muted); }
.contact-faq { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.contact-faq a { font-size: .875rem; color: var(--color-text-muted); }
.contact-faq a:hover { color: var(--color-primary); }

.alert { padding: .875rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: .9rem; }
.alert--success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert--error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert--error p { margin: .25rem 0; }

/* Prose (privacy/terms/blog post) */
.prose-layout { display: grid; grid-template-columns: 1fr 260px; gap: 2.5rem; align-items: start; }
.prose h2 { font-size: 1.25rem; font-weight: 700; margin: 2rem 0 .75rem; color: var(--color-text); }
.prose h3 { font-size: 1rem; font-weight: 700; margin: 1.25rem 0 .5rem; }
.prose p { margin-bottom: .875rem; color: var(--color-text-muted); line-height: 1.7; }
.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: .875rem; }
.prose li { margin-bottom: .35rem; color: var(--color-text-muted); line-height: 1.6; }
.prose a { color: var(--color-primary); }
.prose strong { color: var(--color-text); }

.prose-sidebar { position: sticky; top: 80px; display: flex; flex-direction: column; gap: 1rem; }
.prose-sidebar-card { background: var(--color-bg-soft); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.25rem; }
.prose-sidebar-card h4 { font-size: .9rem; font-weight: 700; margin-bottom: .75rem; }
.toc { padding-left: 1.25rem; }
.toc li { margin-bottom: .4rem; }
.toc a { font-size: .85rem; color: var(--color-text-muted); }
.toc a:hover { color: var(--color-primary); }
.quick-summary { list-style: none; display: flex; flex-direction: column; gap: .4rem; }
.quick-summary li { font-size: .85rem; color: var(--color-text-muted); }

/* Blog index */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; margin-bottom: 2.5rem; }
.blog-card { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; background: #fff; transition: box-shadow var(--transition); display: flex; flex-direction: column; }
.blog-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.blog-card__img-wrap { display: block; aspect-ratio: 16/9; overflow: hidden; }
.blog-card__img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.blog-card:hover .blog-card__img-wrap img { transform: scale(1.03); }
.blog-card__body { padding: 1.25rem; display: flex; flex-direction: column; flex: 1; }
.blog-card__date { font-size: .8rem; color: var(--color-text-muted); margin-bottom: .5rem; display: block; }
.blog-card__title { font-size: 1rem; font-weight: 700; margin-bottom: .5rem; line-height: 1.4; }
.blog-card__title a { color: var(--color-text); }
.blog-card__title a:hover { color: var(--color-primary); text-decoration: none; }
.blog-card__excerpt { font-size: .875rem; color: var(--color-text-muted); margin-bottom: .75rem; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.blog-card__read-more { font-size: .875rem; font-weight: 600; color: var(--color-primary); margin-top: auto; }
.blog-card__read-more:hover { text-decoration: none; }

.blog-empty { text-align: center; padding: 4rem 1rem; color: var(--color-text-muted); }
.blog-empty p { margin-bottom: 1.5rem; font-size: 1.1rem; }

.pagination { display: flex; align-items: center; justify-content: center; gap: .5rem; flex-wrap: wrap; }
.pagination__btn { padding: .5rem 1rem; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: .875rem; color: var(--color-text); }
.pagination__btn:hover { background: var(--color-bg-soft); text-decoration: none; }
.pagination__pages { display: flex; gap: .25rem; }
.pagination__page { padding: .4rem .75rem; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: .875rem; color: var(--color-text); }
.pagination__page:hover { background: var(--color-bg-soft); text-decoration: none; }
.pagination__page--active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination__ellipsis { padding: .4rem .5rem; color: var(--color-text-muted); }

/* Blog post */
.post-layout { display: grid; grid-template-columns: 1fr 260px; gap: 2.5rem; align-items: start; }
.post__header { margin-bottom: 1.5rem; }
.post__date { font-size: .85rem; color: var(--color-text-muted); display: block; margin-bottom: .5rem; }
.post__title { font-size: clamp(1.375rem, 2.5vw, 2rem); font-weight: 700; line-height: 1.3; margin-bottom: .75rem; }
.post__excerpt { font-size: 1.05rem; color: var(--color-text-muted); border-left: 3px solid var(--color-primary); padding-left: 1rem; }
.post__featured-img { width: 100%; height: auto; border-radius: var(--radius-lg); margin-bottom: 2rem; }
.post__content { margin-bottom: 2rem; }
.post__footer { padding-top: 1.5rem; border-top: 1px solid var(--color-border); }
.post-sidebar { position: sticky; top: 80px; display: flex; flex-direction: column; gap: 1rem; }

/* ---- Custom Content Section (injected via Admin) ---- */
.tool-custom-content { padding: 3rem 1rem; background: var(--color-bg-soft); }
.page-custom-content  { padding: 2.5rem 1rem; }

/* ---- Error Page ---- */
.error-page { text-align: center; padding: 5rem 1rem; }
.error-page h1 { font-size: 2rem; margin-bottom: 1rem; }
.error-page p { color: var(--color-text-muted); margin-bottom: 2rem; }

/* ---- Responsive ---- */
@media (min-width: 769px) and (max-width: 1100px) {
    .navbar__tools-dropdown.open .navbar__dropdown {
        grid-template-columns: repeat(2, 1fr);
        width: 420px;
    }
}

@media (max-width: 768px) {
    .navbar__toggle { display: flex; margin-left: auto; }
    .navbar__menu {
        display: none; flex-direction: column;
        position: absolute; top: 60px; left: 0; right: 0;
        background: #fff;
        padding: .5rem .75rem .75rem;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 4px 12px rgba(0,0,0,.08);
        z-index: 99;
    }
    .navbar__menu.open { display: flex; }
    .navbar__menu .navbar__link { padding: .5rem .75rem; font-size: .9rem; }

    /* Tools dropdown on mobile: expandable list */
    .navbar__tools-dropdown { width: 100%; }
    .navbar__link--dropdown { width: 100%; text-align: left; display: flex; justify-content: space-between; }
    .navbar__dropdown {
        position: static; min-width: auto;
        grid-template-columns: 1fr 1fr;
        box-shadow: none; border: none;
        background: var(--color-bg-soft);
        border-radius: var(--radius);
        padding: .5rem;
        margin-top: .25rem;
        display: none;
    }
    .navbar__tools-dropdown.open .navbar__dropdown { display: grid; }
    .navbar__dropdown-heading { font-size: .65rem; padding: .25rem .4rem .1rem; }
    .navbar__dropdown-item { font-size: .8rem; padding: .35rem .5rem; }
    .navbar__dropdown-group { margin-bottom: .25rem; }

    .footer__grid { grid-template-columns: 1fr 1fr; }
    .hero__stats { gap: 1.5rem; }
    .about-mission { grid-template-columns: 1fr; gap: 2rem; }
    .contact-layout { grid-template-columns: 1fr; }
    .prose-layout { grid-template-columns: 1fr; }
    .post-layout { grid-template-columns: 1fr; }
    .prose-sidebar, .post-sidebar { position: static; }
}

@media (max-width: 480px) {
    .footer__grid { grid-template-columns: 1fr; }
}