/* ==========================================================================
   PDFtoExcel.in - Design System & Master Stylesheet
   Modern Dark/Emerald Aesthetic · Glassmorphic UI · Micro-Interactions
   ========================================================================== */

:root {
    --bg-main: #0B0F19;
    --bg-surface: #131B2A;
    --bg-card: #182235;
    --bg-card-hover: #1E2B42;
    --bg-input: #0F1726;
    
    --primary: #10B981;
    --primary-hover: #059669;
    --primary-glow: rgba(16, 185, 129, 0.25);
    --accent-green: #22C55E;
    --accent-blue: #3B82F6;
    --warning: #F59E0B;
    --danger: #EF4444;

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    --border-primary: rgba(16, 185, 129, 0.4);

    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --text-subtle: #64748B;

    --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 35px var(--primary-glow);

    --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 85px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 10%, rgba(16, 185, 129, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 25%, rgba(59, 130, 246, 0.06) 0%, transparent 45%);
    background-attachment: fixed;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-main);
    font-weight: 700;
    line-height: 1.25;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--text-main);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--text-main);
    letter-spacing: -0.02em;
}
.site-logo:hover {
    color: var(--text-main);
}
.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #10B981, #059669);
    border-radius: var(--radius-sm);
    color: #fff;
    box-shadow: 0 4px 14px var(--primary-glow);
}
.logo-text .tld {
    color: var(--primary);
}

.site-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 0.5rem 0.25rem;
    position: relative;
}
.nav-link:hover, .nav-link.active {
    color: var(--text-main);
}
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.dropdown {
    position: relative;
}
.dropdown-toggle .arrow {
    font-size: 0.65rem;
    margin-left: 0.35rem;
    opacity: 0.7;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: -140px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    min-width: 460px;
    box-shadow: var(--shadow-lg);
    display: none;
    list-style: none;
    z-index: 100;
    grid-template-columns: 1fr 1fr;
    gap: 0.2rem 0.65rem;
}
.dropdown:hover .dropdown-menu {
    display: grid;
    animation: fadeIn 0.18s ease;
}
.dropdown-menu li a {
    display: block;
    padding: 0.6rem 0.85rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
}
.dropdown-menu li a:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.badge-free {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid var(--border-primary);
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
}
.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}
.mobile-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-main);
    transition: var(--transition);
}

/* ==========================================================================
   Hero Section: Split Layout (Text Left + Tool Right)
   ========================================================================== */
.hero-section {
    padding: 3.5rem 0 4.5rem;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 3.5rem;
    align-items: center;
}

.hero-text {
    max-width: 540px;
}

.hero-badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.25rem;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}
.hero-title .gradient-text {
    background: linear-gradient(135deg, #10B981 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.12rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 2rem;
}

.hero-features-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    list-style: none;
    margin-bottom: 2rem;
}
.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.95rem;
    color: var(--text-main);
}
.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: rgba(16, 185, 129, 0.2);
    color: var(--primary);
    border-radius: 50%;
}

/* ==========================================================================
   Converter Tool Card Component
   ========================================================================== */
.converter-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.tool-badge {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    background: rgba(16, 185, 129, 0.12);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-bottom: 0.35rem;
}
.tool-title {
    font-size: 1.25rem;
    font-weight: 700;
}
.security-indicator {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--text-muted);
}
.security-indicator svg {
    color: var(--primary);
}

/* Dropzone */
.dropzone {
    border: 2px dashed rgba(255, 255, 255, 0.18);
    background: rgba(15, 23, 38, 0.6);
    border-radius: var(--radius-lg);
    padding: 3rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.dropzone:hover, .dropzone.dragover {
    border-color: var(--primary);
    background: rgba(16, 185, 129, 0.05);
    transform: scale(1.008);
}
.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}
.dropzone-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 50%;
    color: var(--primary);
    margin-bottom: 1.25rem;
    transition: var(--transition);
}
.dropzone:hover .dropzone-icon {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--primary-glow);
}
.main-prompt {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 0.35rem;
}
.sub-prompt {
    font-size: 0.85rem;
    color: var(--text-subtle);
    margin-bottom: 1.5rem;
}
.btn-upload {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #10B981, #059669);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.8rem 1.75rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px var(--primary-glow);
    transition: var(--transition);
}
.btn-upload:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px var(--primary-glow);
}

.upload-actions-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}
.cloud-storage-buttons {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-cloud {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-surface);
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-cloud:hover {
    color: var(--text-main);
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-2px);
}

.converter-quick-jump {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-top: 0.85rem;
    font-size: 0.82rem;
    color: var(--text-subtle);
}
.jump-label {
    font-weight: 600;
}
.jump-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}
.jump-pill:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(16, 185, 129, 0.08);
}

/* File Preview Panel */
.file-preview-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.file-info-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
}
.file-icon-box {
    width: 44px;
    height: 44px;
    background: rgba(239, 68, 68, 0.15);
    border-radius: var(--radius-sm);
    color: #EF4444;
    display: flex;
    align-items: center;
    justify-content: center;
}
.file-meta {
    flex: 1;
    overflow: hidden;
}
.file-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.file-size {
    font-size: 0.8rem;
    color: var(--text-subtle);
}
.btn-remove-file {
    background: transparent;
    border: none;
    color: var(--text-subtle);
    cursor: pointer;
    padding: 0.35rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-remove-file:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.format-options {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
}
.format-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}
.format-radio-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.radio-pill {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition);
}
.radio-pill:hover {
    border-color: var(--border-hover);
}
.radio-pill input:checked + span {
    color: var(--primary);
    font-weight: 600;
}

.btn-convert {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    width: 100%;
    background: linear-gradient(135deg, #10B981, #059669);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    box-shadow: 0 6px 20px var(--primary-glow);
    transition: var(--transition);
}
.btn-convert:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 26px var(--primary-glow);
}

/* Processing Panel */
.processing-panel {
    text-align: center;
    padding: 3rem 1.5rem;
}
.processing-spinner {
    position: relative;
    width: 72px;
    height: 72px;
    margin: 0 auto 1.5rem;
}
.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid rgba(255, 255, 255, 0.08);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
.spinner-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--primary);
}
.progress-status {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 1rem;
}
.progress-bar-container {
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}
.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #10B981, #38BDF8);
    border-radius: 999px;
    transition: width 0.3s ease;
}
.progress-percentage {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Download Panel */
.download-panel {
    text-align: center;
    padding: 2rem 1rem;
}
.success-icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--primary);
    border-radius: 50%;
    margin-bottom: 1.25rem;
}
.download-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.4rem;
}
.download-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}
.download-actions {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    max-width: 360px;
    margin: 0 auto 1.5rem;
}
.btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    background: linear-gradient(135deg, #10B981, #059669);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 6px 20px var(--primary-glow);
}
.btn-download:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 26px var(--primary-glow);
}
.btn-convert-another {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.8rem 1.25rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}
.btn-convert-another:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}
.auto-delete-note {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--text-subtle);
}

/* ==========================================================================
   Content Sections Below Hero (>2,000 words styling)
   ========================================================================== */
.content-section {
    padding: 4.5rem 0;
    border-top: 1px solid var(--border);
}
.content-section:nth-child(even) {
    background: rgba(19, 27, 42, 0.4);
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 3.5rem;
}
.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 0.75rem;
}
.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}
.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* 3-Step Guide Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.25rem 1.75rem;
    position: relative;
    transition: var(--transition);
}
.step-card:hover {
    border-color: var(--border-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--primary);
    font-weight: 800;
    font-size: 1.15rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
}
.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.step-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* Feature & Deep Content Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3.5rem;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}
.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}
.feature-icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(16, 185, 129, 0.12);
    color: var(--primary);
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
}
.feature-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.feature-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* Editorial Body Text / Guides / Rich Content */
.content-rich, .editorial-prose {
    max-width: 980px;
    margin: 0 auto;
}
.article-body, .editorial-prose {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.85;
}
.article-body p, .editorial-prose p {
    margin-bottom: 1.5rem;
}
.article-body h3, .editorial-prose h3 {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--text-main);
    margin: 3.25rem 0 1.25rem;
    letter-spacing: -0.02em;
    padding-left: 1rem;
    border-left: 4px solid var(--primary);
}
.article-body h4, .editorial-prose h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 2rem 0 0.85rem;
}
.article-body ul:not(.checklist), .editorial-prose ul {
    margin: 1.25rem 0 1.75rem 1.5rem;
}
.article-body ol:not(.ordered-feature-list), .editorial-prose ol {
    margin: 1.25rem 0 1.75rem 1.5rem;
}
.article-body li, .editorial-prose li {
    margin-bottom: 0.6rem;
}

/* Polished Data & Comparison Tables */
.table-responsive {
    overflow-x: auto;
    margin: 2.75rem 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
}
.comparison-table, .data-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}
.comparison-table th, .data-table th {
    background: #0f172a;
    padding: 1.15rem 1.4rem;
    font-weight: 700;
    color: var(--text-main);
    border-bottom: 1px solid var(--border);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}
.comparison-table th:last-child, .data-table th:last-child {
    border-right: none;
}
.comparison-table td, .data-table td {
    padding: 1.15rem 1.4rem;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    line-height: 1.6;
    vertical-align: middle;
}
.comparison-table td:last-child, .data-table td:last-child {
    border-right: none;
}
.comparison-table tr:last-child td, .data-table tr:last-child td {
    border-bottom: none;
}
.comparison-table tr:nth-child(even) td, .data-table tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.015);
}
.comparison-table tr:hover td, .data-table tr:hover td {
    background: rgba(16, 185, 129, 0.04);
}
.badge-highlight, .badge-success {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--primary);
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.82rem;
    white-space: nowrap;
}

/* Use Case Grid Cards */
.use-case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin: 2.25rem 0 3rem;
}
.use-case-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    transition: var(--transition);
}
.use-case-card:hover {
    border-color: var(--border-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.use-case-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 0.75rem;
    line-height: 1.4;
}
.use-case-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 0 !important;
}

/* Numbered Step Feature List */
.ordered-feature-list {
    list-style: none !important;
    counter-reset: feature-step;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin: 2rem 0 3rem !important;
    padding: 0 !important;
}
.ordered-feature-list li {
    position: relative;
    counter-increment: feature-step;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem 1.25rem 4.5rem;
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.7;
    transition: var(--transition);
}
.ordered-feature-list li:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}
.ordered-feature-list li::before {
    content: counter(feature-step);
    position: absolute;
    top: 1.25rem;
    left: 1.25rem;
    width: 36px;
    height: 36px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.35);
    color: var(--primary);
    font-weight: 800;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.ordered-feature-list li strong {
    color: var(--text-main);
    font-size: 1.05rem;
    display: block;
    margin-bottom: 0.25rem;
}

/* Checklist Cards */
.checklist {
    list-style: none !important;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 2rem 0 3rem !important;
    padding: 0 !important;
}
.checklist li {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.15rem 1.4rem 1.15rem 3.75rem;
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.65;
    transition: var(--transition);
}
.checklist li:hover {
    border-color: var(--border-hover);
}
.checklist li::before {
    content: "✓";
    position: absolute;
    top: 1.15rem;
    left: 1.25rem;
    width: 26px;
    height: 26px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--primary);
    font-weight: 800;
    font-size: 0.9rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.checklist li strong {
    color: var(--text-main);
}

/* Pro-Tip & Callout Containers */
.content-callout, .pro-tip-box {
    background: rgba(16, 185, 129, 0.06);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 1.5rem 1.75rem;
    margin: 2.25rem 0;
}
.content-callout h4, .pro-tip-box h4 {
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.content-callout p, .pro-tip-box p {
    margin-bottom: 0 !important;
    font-size: 0.96rem;
    color: var(--text-muted);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .use-case-grid {
        grid-template-columns: 1fr;
    }
    .ordered-feature-list li {
        padding: 1.25rem 1.25rem 1.25rem 3.75rem;
    }
    .ordered-feature-list li::before {
        left: 0.85rem;
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
}

/* FAQ Accordion */
.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    max-width: 860px;
    margin: 0 auto;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--border-hover);
}
.faq-question {
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}
.faq-question .toggle-icon {
    font-size: 1.25rem;
    color: var(--primary);
    transition: transform 0.2s ease;
}
.faq-item.open .faq-question .toggle-icon {
    transform: rotate(45deg);
}
.faq-answer {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.98rem;
    color: var(--text-muted);
    line-height: 1.7;
    display: none;
}
.faq-item.open .faq-answer {
    display: block;
}

/* Footer */
.site-footer {
    background: #080C14;
    border-top: 1px solid var(--border);
    padding: 4.5rem 0 2rem;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3.5rem;
    margin-bottom: 3.5rem;
}
.brand-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin: 1.25rem 0 1.5rem;
}
.trust-indicators {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.trust-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.8rem;
    color: var(--text-subtle);
}
.trust-pill svg {
    color: var(--primary);
}
.footer-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text-main);
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}
.footer-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
}
.footer-links a:hover {
    color: var(--text-main);
    transform: translateX(3px);
    display: inline-block;
}
.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}
.footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-subtle);
}
.footer-legal {
    display: flex;
    gap: 0.75rem;
}

/* Animations */
@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .hero-section {
        padding: 2.25rem 0 2.75rem;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
    .hero-text, .hero-content {
        max-width: 100%;
        text-align: center;
    }
    .hero-badge-pill, .badge-pill, .badge-tag {
        margin-bottom: 0.85rem;
    }
    .hero-title {
        font-size: 2.25rem;
        margin-bottom: 0.85rem;
    }
    .hero-desc, .hero-subtitle {
        font-size: 1.05rem;
        margin-bottom: 1.25rem;
    }
    .hero-features-list, .hero-features {
        align-items: center;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
    .steps-grid, .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .site-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-surface);
        border-bottom: 1px solid var(--border);
        padding: 1.5rem;
    }
    .site-nav.nav-open {
        display: block;
    }
    .site-nav .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .mobile-toggle {
        display: flex;
    }
    .badge-free {
        display: none;
    }
    .hero-section {
        padding: 1.5rem 0 2rem;
    }
    .hero-grid {
        gap: 1.25rem;
    }
    .hero-title {
        font-size: 1.85rem;
        margin-bottom: 0.65rem;
    }
    .hero-desc, .hero-subtitle {
        font-size: 0.95rem;
        line-height: 1.55;
        margin-bottom: 1rem;
    }
    .converter-card {
        padding: 1.35rem 1rem;
    }
    .footer-top {
        grid-template-columns: 1fr;
    }
    .footer-bottom-inner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* ==========================================================================
   Target Keywords & Related Queries Section
   ========================================================================== */
.keyword-section {
    padding: 3.5rem 0;
    border-top: 1px solid var(--border);
    background: rgba(15, 23, 38, 0.5);
}
.keyword-cloud-header {
    text-align: center;
    margin-bottom: 2rem;
}
.keyword-cloud-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}
.keyword-cloud-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
}
.keyword-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    justify-content: center;
    max-width: 1020px;
    margin: 0 auto;
}
.keyword-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.45rem 0.95rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}
.keyword-tag:hover {
    color: var(--text-main);
    border-color: var(--border-primary);
    background: rgba(16, 185, 129, 0.1);
    transform: translateY(-2px);
}
.keyword-tag.primary-kw {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 700;
}

/* Tool Feedback Bar & Interactive Rating Widget */
.tool-feedback-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.25rem;
    padding: 0.85rem 1.25rem;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.rating-widget {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.rating-prompt {
    font-weight: 600;
    color: var(--text-color);
}

.star-rating {
    display: inline-flex;
    gap: 2px;
}

.star-btn {
    background: none;
    border: none;
    font-size: 1.35rem;
    line-height: 1;
    color: #475569;
    cursor: pointer;
    transition: color 0.15s ease, transform 0.15s ease;
    padding: 0 1px;
}

.star-btn:hover,
.star-btn.hover,
.star-btn.active {
    color: #F59E0B;
    transform: scale(1.15);
}

.rating-score-display {
    color: var(--text-color);
    font-size: 0.85rem;
}

.rating-feedback-msg {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.8rem;
    animation: fadeIn 0.3s ease-in;
}

.live-activity-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.825rem;
    color: var(--text-muted);
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
}

.pulse-indicator {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* Format Hub Grid & Cards (Upgraded Keyword Cloud) */
.format-hub-section {
    padding: 4rem 0;
    background: rgba(15, 23, 42, 0.6);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.format-hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.format-hub-card {
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.format-hub-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.12);
}

.format-hub-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.hub-card-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.55rem;
    background: rgba(16, 185, 129, 0.12);
    color: var(--primary);
    border-radius: 4px;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.hub-card-arrow {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: transform 0.2s ease, color 0.2s ease;
}

.format-hub-card:hover .hub-card-arrow {
    color: var(--primary);
    transform: translateX(3px);
}

.format-hub-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0 0 0.4rem 0;
    color: var(--text-color);
}

.format-hub-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}