/* ==========================================================================
   PDF to JPG - Custom Styles
   All selectors scoped with .site- prefix to avoid Google AdSense conflicts.
   No aggressive resets on body, html, *, ins, iframe elements.
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
    --site-color-primary: #e74c3c;
    --site-color-primary-dark: #c0392b;
    --site-color-primary-light: #fdf0ef;
    --site-color-secondary: #3498db;
    --site-color-secondary-dark: #2980b9;
    --site-color-text: #2c3e50;
    --site-color-text-light: #7f8c8d;
    --site-color-bg: #ffffff;
    --site-color-bg-alt: #f8f9fa;
    --site-color-border: #e9ecef;
    --site-color-success: #27ae60;
    --site-color-error: #e74c3c;
    --site-color-warning: #f39c12;
    --site-font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --site-font-size-base: 16px;
    --site-line-height: 1.6;
    --site-max-width: 1200px;
    --site-radius: 8px;
    --site-radius-lg: 12px;
    --site-shadow: 0 2px 8px rgba(0,0,0,0.08);
    --site-shadow-lg: 0 4px 24px rgba(0,0,0,0.12);
    --site-transition: 0.2s ease;
}

/* --- Base (minimal, AdSense-safe) --- */
html {
    font-size: var(--site-font-size-base);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--site-font-family);
    font-size: 1rem;
    line-height: var(--site-line-height);
    color: var(--site-color-text);
    background-color: var(--site-color-bg);
}

/* --- Header --- */
.site-header {
    background: var(--site-color-bg);
    border-bottom: 1px solid var(--site-color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header-inner {
    max-width: var(--site-max-width);
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--site-color-text);
}

.site-logo-icon {
    flex-shrink: 0;
}

.site-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.site-nav {
    display: flex;
    gap: 1.5rem;
}

.site-nav-link {
    text-decoration: none;
    color: var(--site-color-text-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--site-transition);
}

.site-nav-link:hover {
    color: var(--site-color-primary);
}

/* --- Main --- */
.site-main {
    max-width: var(--site-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- Hero Section --- */
.site-hero {
    text-align: center;
    padding: 3rem 1rem 2rem;
}

.site-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--site-color-text);
    margin: 0 0 1rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.site-hero-subtitle {
    font-size: 1.15rem;
    color: var(--site-color-text-light);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Upload Section --- */
.site-upload-section {
    padding: 0 0 2rem;
}

.site-upload-card {
    max-width: 700px;
    margin: 0 auto;
    background: var(--site-color-bg);
    border: 1px solid var(--site-color-border);
    border-radius: var(--site-radius-lg);
    padding: 2rem;
    box-shadow: var(--site-shadow);
}

.site-dropzone {
    border: 2px dashed var(--site-color-border);
    border-radius: var(--site-radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--site-transition), background-color var(--site-transition);
    position: relative;
}

.site-dropzone:hover,
.site-dropzone.site-dropzone-active {
    border-color: var(--site-color-primary);
    background-color: var(--site-color-primary-light);
}

.site-dropzone:focus {
    outline: 2px solid var(--site-color-primary);
    outline-offset: 2px;
}

.site-dropzone-icon {
    color: var(--site-color-text-light);
    margin-bottom: 1rem;
}

.site-dropzone-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--site-color-text);
    margin: 0 0 0.25rem;
}

.site-dropzone-subtext {
    font-size: 0.95rem;
    color: var(--site-color-text-light);
    margin: 0 0 0.5rem;
}

.site-dropzone-hint {
    font-size: 0.85rem;
    color: var(--site-color-text-light);
    margin: 0;
}

.site-file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* --- Options Row --- */
.site-options {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--site-color-border);
}

.site-option-group {
    flex: 1;
    min-width: 160px;
}

.site-option-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--site-color-text);
    margin-bottom: 0.4rem;
}

.site-select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--site-color-text);
    background: var(--site-color-bg);
    border: 1px solid var(--site-color-border);
    border-radius: var(--site-radius);
    appearance: auto;
    cursor: pointer;
    transition: border-color var(--site-transition);
}

.site-select:focus {
    outline: 2px solid var(--site-color-primary);
    outline-offset: 1px;
    border-color: var(--site-color-primary);
}

.site-option-actions {
    display: flex;
    align-items: flex-end;
}

/* --- Buttons --- */
.site-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--site-radius);
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--site-transition), transform var(--site-transition);
    white-space: nowrap;
}

.site-btn:active {
    transform: scale(0.97);
}

.site-btn-primary {
    background-color: var(--site-color-primary);
    color: #fff;
}

.site-btn-primary:hover {
    background-color: var(--site-color-primary-dark);
}

.site-btn-secondary {
    background-color: var(--site-color-bg-alt);
    color: var(--site-color-text);
    border: 1px solid var(--site-color-border);
}

.site-btn-secondary:hover {
    background-color: var(--site-color-border);
}

.site-btn-small {
    padding: 0.4rem 1rem;
    font-size: 0.875rem;
}

.site-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* --- File Info --- */
.site-file-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--site-color-bg-alt);
    border-radius: var(--site-radius);
    border: 1px solid var(--site-color-border);
}

.site-file-info-icon {
    color: var(--site-color-primary);
    flex-shrink: 0;
}

.site-file-info-details {
    flex: 1;
    min-width: 0;
}

.site-file-info-name {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-file-info-size {
    display: block;
    font-size: 0.85rem;
    color: var(--site-color-text-light);
}

.site-file-remove {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--site-color-text-light);
    cursor: pointer;
    padding: 0 0.25rem;
    line-height: 1;
    transition: color var(--site-transition);
}

.site-file-remove:hover {
    color: var(--site-color-error);
}

/* --- Progress --- */
.site-progress {
    margin-top: 1.5rem;
}

.site-progress-label {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--site-color-text);
}

.site-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--site-color-bg-alt);
    border-radius: 4px;
    overflow: hidden;
}

.site-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--site-color-primary), var(--site-color-secondary));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.site-progress-percent {
    font-size: 0.85rem;
    color: var(--site-color-text-light);
    margin-top: 0.3rem;
    text-align: right;
}

/* --- Error --- */
.site-error {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: #fdf0ef;
    border: 1px solid #f5c6cb;
    border-radius: var(--site-radius);
    color: var(--site-color-error);
    font-size: 0.95rem;
}

.site-error-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

/* --- Results --- */
.site-results {
    padding: 0 0 3rem;
}

.site-results-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.site-results-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--site-color-text);
}

.site-results-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.site-results-info {
    font-size: 0.95rem;
    color: var(--site-color-text-light);
    margin-bottom: 1.5rem;
}

.site-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.site-result-card {
    background: var(--site-color-bg);
    border: 1px solid var(--site-color-border);
    border-radius: var(--site-radius);
    overflow: hidden;
    box-shadow: var(--site-shadow);
    transition: box-shadow var(--site-transition);
}

.site-result-card:hover {
    box-shadow: var(--site-shadow-lg);
}

.site-result-preview {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: contain;
    background: var(--site-color-bg-alt);
    display: block;
}

.site-result-info {
    padding: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-result-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--site-color-text);
}

.site-result-download {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--site-color-primary);
    background: var(--site-color-primary-light);
    border: none;
    border-radius: var(--site-radius);
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--site-transition);
}

.site-result-download:hover {
    background: #f9d6d3;
}

/* --- Features Section --- */
.site-features {
    padding: 3rem 0;
    text-align: center;
}

.site-features h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 2rem;
    color: var(--site-color-text);
}

.site-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.site-feature-card {
    padding: 2rem 1.5rem;
    background: var(--site-color-bg);
    border: 1px solid var(--site-color-border);
    border-radius: var(--site-radius-lg);
    text-align: center;
    transition: box-shadow var(--site-transition), transform var(--site-transition);
}

.site-feature-card:hover {
    box-shadow: var(--site-shadow-lg);
    transform: translateY(-2px);
}

.site-feature-icon {
    color: var(--site-color-primary);
    margin-bottom: 1rem;
}

.site-feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: var(--site-color-text);
}

.site-feature-card p {
    font-size: 0.95rem;
    color: var(--site-color-text-light);
    margin: 0;
    line-height: 1.6;
}

/* --- How to Use Section --- */
.site-howto {
    padding: 3rem 0;
    text-align: center;
    background: var(--site-color-bg-alt);
    margin: 0 -1.5rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.site-howto h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 2rem;
    color: var(--site-color-text);
}

.site-howto-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.site-howto-step {
    text-align: center;
}

.site-howto-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--site-color-primary);
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.site-howto-step h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: var(--site-color-text);
}

.site-howto-step p {
    font-size: 0.95rem;
    color: var(--site-color-text-light);
    margin: 0;
    line-height: 1.6;
}

/* --- FAQ Section --- */
.site-faq {
    padding: 3rem 0;
}

.site-faq h2 {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin: 0 0 2rem;
    color: var(--site-color-text);
}

.site-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.site-faq-item {
    border: 1px solid var(--site-color-border);
    border-radius: var(--site-radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.site-faq-item summary {
    padding: 1rem 1.25rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    color: var(--site-color-text);
    background: var(--site-color-bg);
    transition: background-color var(--site-transition);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-faq-item summary::-webkit-details-marker {
    display: none;
}

.site-faq-item summary::after {
    content: "+";
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--site-color-text-light);
    transition: transform var(--site-transition);
    flex-shrink: 0;
    margin-left: 1rem;
}

.site-faq-item[open] summary::after {
    content: "\2212";
}

.site-faq-item summary:hover {
    background: var(--site-color-bg-alt);
}

.site-faq-item p {
    padding: 0 1.25rem 1rem;
    margin: 0;
    font-size: 0.95rem;
    color: var(--site-color-text-light);
    line-height: 1.7;
}

/* --- Content Pages (Privacy, etc.) --- */
.site-content-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

.site-content-page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: var(--site-color-text);
}

.site-content-page h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 2rem 0 0.75rem;
    color: var(--site-color-text);
}

.site-content-page p {
    margin: 0 0 1rem;
    line-height: 1.7;
    color: var(--site-color-text-light);
}

.site-content-page ul {
    margin: 0 0 1rem;
    padding-left: 1.5rem;
    color: var(--site-color-text-light);
}

.site-content-page ul li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.site-content-page a {
    color: var(--site-color-primary);
}

.site-content-updated {
    font-size: 0.9rem;
    color: var(--site-color-text-light);
    margin-bottom: 2rem;
}

/* --- Error Page --- */
.site-error-page {
    text-align: center;
    padding: 4rem 0;
}

.site-error-page h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.site-error-page p {
    margin-bottom: 2rem;
}

.site-error-request-id {
    font-size: 0.85rem;
    color: var(--site-color-text-light);
    margin-bottom: 2rem;
}

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--site-color-border);
    padding: 2rem 0;
    margin-top: 2rem;
}

.site-footer-inner {
    max-width: var(--site-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-footer-inner p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--site-color-text-light);
}

.site-footer-nav {
    display: flex;
    gap: 1.5rem;
}

.site-footer-nav a {
    font-size: 0.9rem;
    color: var(--site-color-text-light);
    text-decoration: none;
    transition: color var(--site-transition);
}

.site-footer-nav a:hover {
    color: var(--site-color-primary);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .site-hero h1 {
        font-size: 1.75rem;
    }

    .site-hero-subtitle {
        font-size: 1rem;
    }

    .site-hero {
        padding: 2rem 0.5rem 1.5rem;
    }

    .site-upload-card {
        padding: 1.25rem;
    }

    .site-dropzone {
        padding: 2rem 1rem;
    }

    .site-options {
        flex-direction: column;
    }

    .site-option-group {
        min-width: 100%;
    }

    .site-results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .site-results-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .site-features h2,
    .site-howto h2,
    .site-faq h2 {
        font-size: 1.4rem;
    }

    .site-footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .site-hero h1 {
        font-size: 1.4rem;
    }

    .site-header-inner {
        padding: 0.5rem 1rem;
    }

    .site-nav {
        gap: 1rem;
    }

    .site-main {
        padding: 0 1rem;
    }

    .site-results-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .site-howto-steps {
        grid-template-columns: 1fr;
    }
}

/* --- Print --- */
@media print {
    .site-header,
    .site-footer,
    .site-upload-section,
    .site-results-actions {
        display: none;
    }
}

/* --- Loading spinner (used during conversion) --- */
.site-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--site-color-border);
    border-top-color: var(--site-color-primary);
    border-radius: 50%;
    animation: site-spin 0.6s linear infinite;
}

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