/*
 * Copyright (c) 2026 jjopensoftworks-blip. All rights reserved.
 * ShreePdf Engine - Radiant Aesthetics and Intelligent PDF Engineering for .NET
 */

/* Modern Design System - ShreePdf Page */
:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-card-border: rgba(51, 65, 85, 0.6);
    --primary: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.35);
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.3);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --font-heading: 'Outfit', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-code: 'JetBrains Mono', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(79, 70, 229, 0.5) rgba(15, 23, 42, 0.8);
}

/* Modern Sleek Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.8);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb {
    background: rgba(79, 70, 229, 0.5);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.9);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Ambient Glow Overlay */
.ambient-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    pointer-events: none;
    z-index: 0;
}
.glow-1 {
    top: -100px;
    left: 20%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.25) 0%, rgba(0,0,0,0) 70%);
}
.glow-2 {
    top: 600px;
    right: 10%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, rgba(0,0,0,0) 70%);
}

.container {
    width: 100%;
    max-width: 1420px;
    margin: 0 auto;
    padding: 0 1.25rem;
    position: relative;
    z-index: 1;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--bg-card-border);
    padding: 0.75rem 0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
}
.brand-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px var(--primary-glow);
}
.brand-highlight {
    color: var(--accent);
}
.badge-v1 {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(129, 140, 248, 0.3);
    font-size: 0.72rem;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    margin-left: 0.5rem;
}

/* Official Logo Mark: real brand assets (icon.png / logo.png).
   Icon-only badge is used at compact sizes (navbar, footer, favicon);
   the full wordmark (logo.png) is reserved for the large hero banner. */
.brand-icon-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
    filter: drop-shadow(0 0 10px rgba(129, 140, 248, 0.4));
    transition: transform 0.3s ease;
}
.brand:hover .brand-icon-img {
    transform: scale(1.05);
}
.brand-word {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: -0.01em;
}

.hero-logo-banner {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-logo-img {
    width: 100%;
    max-width: 340px;
    height: auto;
    filter: drop-shadow(0 0 25px rgba(129, 140, 248, 0.5));
    transition: transform 0.3s ease;
}
.hero-logo-img:hover {
    transform: scale(1.03);
}

.footer-brand-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.5rem;
}
.footer-icon-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 7px;
}
.footer-word {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
}

/* Section Eyebrow: consistent kicker label above every section title */
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    border: 1px solid rgba(56, 189, 248, 0.25);
    padding: 0.3rem 0.9rem;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.15rem;
    white-space: nowrap;
    flex-wrap: nowrap;
}
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.88rem;
    transition: color 0.2s;
    white-space: nowrap;
}
.nav-links a:hover {
    color: var(--text-main);
}
.btn-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--bg-card-border);
    color: var(--text-main) !important;
    padding: 0.4rem 0.85rem;
    border-radius: 8px;
    font-size: 0.85rem;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-nav:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

/* Hero Section */
.hero {
    padding: 3.5rem 0 2.25rem;
    text-align: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    border: 1px solid rgba(56, 189, 248, 0.25);
    padding: 0.35rem 1rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}
.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}
.hero-title {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}
.gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 750px;
    margin: 0 auto 2rem;
}
.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2.25rem;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: white;
    box-shadow: 0 10px 25px var(--primary-glow);
    border: none;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px var(--primary-glow);
}
.copy-cmd-box {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--bg-card-border);
    padding: 0.6rem 1rem;
    border-radius: 10px;
    font-family: var(--font-code);
    font-size: 0.9rem;
    cursor: pointer;
}
.btn-copy {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-muted);
    padding: 0.25rem 0.6rem;
    border-radius: 5px;
    font-size: 0.75rem;
    cursor: pointer;
}
.btn-copy:hover {
    background: var(--primary);
    color: white;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}
.metric-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--bg-card-border);
    padding: 1.5rem;
    border-radius: 14px;
    text-align: center;
}
.metric-val {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
}
.metric-lbl {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Section Styling */
.section {
    padding: 3.5rem 0;
}
.section-dark {
    background: rgba(15, 23, 42, 0.5);
    border-top: 1px solid var(--bg-card-border);
    border-bottom: 1px solid var(--bg-card-border);
}
.section-header {
    margin-bottom: 2rem;
}
.text-center { text-align: center; }
.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.section-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 650px;
    margin: 0 auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
}
.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}
.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}
.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    flex-grow: 1;
}
.feature-tag {
    align-self: flex-start;
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-top: 1.25rem;
}

/* Glass Card */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: blur(16px);
    border-radius: 16px;
}

/* Playground Layout */
.playground-layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}
.pg-controls {
    padding: 1.75rem;
}
.control-group {
    margin-bottom: 1.5rem;
}
.control-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.6rem;
}
.segmented-control {
    display: flex;
    background: rgba(15, 23, 42, 0.8);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--bg-card-border);
}
.seg-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem 0.25rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}
.seg-btn.active {
    background: var(--primary);
    color: white;
}

/* Theme Picker */
.theme-picker {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.theme-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--bg-card-border);
    color: var(--text-main);
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.2s;
}
.theme-btn.active {
    border-color: var(--accent);
    background: rgba(56, 189, 248, 0.1);
}
.theme-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
}
.swatch-glassdark { background: #0f172a; border: 2px solid #818cf8; }
.swatch-saas { background: #4f46e5; border: 2px solid #38bdf8; }
.swatch-minimal { background: #ffffff; border: 2px solid #0f172a; }

/* Toggle Switch */
.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.toggle-label {
    font-weight: 600;
    font-size: 0.9rem;
}
.toggle-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #334155;
    transition: .3s;
    border-radius: 24px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--primary); }
input:checked + .slider:before { transform: translateX(20px); }

.code-output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    margin-top: 1.5rem;
}
.btn-sm {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-main);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    cursor: pointer;
}
.code-block {
    background: #090d16;
    border: 1px solid var(--bg-card-border);
    padding: 0.85rem;
    border-radius: 8px;
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: #38bdf8;
    white-space: pre-wrap;
    overflow-x: auto;
}

/* Playground Preview Stage */
.pg-preview {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}
.preview-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--bg-card-border);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}
.preview-tabs {
    display: flex;
    gap: 0.5rem;
}
.prev-tab {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    cursor: pointer;
}
.prev-tab.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}
.preview-status {
    font-size: 0.8rem;
    color: var(--success);
    font-family: var(--font-code);
}

/* Simulated PDF Sheet */
.pdf-stage {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #070a12;
    border-radius: 12px;
    padding: 2rem;
}
.pdf-paper {
    width: 100%;
    max-width: 500px;
    min-height: 520px;
    border-radius: 8px;
    padding: 2rem;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.8);
    transition: all 0.3s;
}

/* Theme Swatches for PDF Paper */
.pdf-paper.theme-glassdark {
    background: #0f172a;
    color: #f8fafc;
    border: 1px solid #334155;
}
.pdf-paper.theme-saas {
    background: #ffffff;
    color: #1e293b;
    border: 1px solid #e2e8f0;
}
.pdf-paper.theme-minimal {
    background: #ffffff;
    color: #0f172a;
    border: 1px solid #cbd5e1;
    font-family: 'Georgia', serif;
}

.pdf-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}
.pdf-badge {
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.05em;
}
.pdf-date { font-size: 0.7rem; opacity: 0.7; }
.pdf-h1 { font-family: var(--font-heading); font-size: 1.5rem; margin-bottom: 0.5rem; }
.pdf-quote {
    font-size: 0.85rem;
    font-style: italic;
    opacity: 0.8;
    border-left: 3px solid var(--accent);
    padding-left: 0.75rem;
    margin-bottom: 1.25rem;
}
.pdf-section-title { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
.pdf-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    margin-bottom: 1.25rem;
}
.pdf-table th {
    background: rgba(79, 70, 229, 0.2);
    text-align: left;
    padding: 0.4rem 0.6rem;
}
.pdf-table td {
    padding: 0.4rem 0.6rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.tag { font-size: 0.65rem; font-weight: 700; padding: 0.1rem 0.4rem; border-radius: 4px; }
.tag-success { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.tag-primary { background: rgba(56, 189, 248, 0.2); color: #38bdf8; }

.pdf-container-box {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 0.85rem;
    border-radius: 6px;
}
.box-title { font-size: 0.75rem; font-weight: 700; color: var(--accent); }
.box-desc { font-size: 0.75rem; opacity: 0.8; margin-top: 0.2rem; }

.pdf-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-35deg);
    font-size: 1.2rem;
    font-weight: 800;
    opacity: 0.08;
    pointer-events: none;
    white-space: nowrap;
}

/* RAG Inspector */
.rag-stage {
    flex-grow: 1;
    background: #070a12;
    border-radius: 12px;
    padding: 1.5rem;
}
.rag-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.rag-title { font-size: 0.9rem; font-weight: 600; color: var(--accent); }
.rag-badge { background: rgba(16, 185, 129, 0.15); color: #10b981; font-size: 0.75rem; padding: 0.2rem 0.5rem; border-radius: 4px; }
.rag-json-block {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: #a7f3d0;
    white-space: pre-wrap;
    max-height: 420px;
    overflow-y: auto;
}
.hidden { display: none !important; }

/* Matrix Table */
.table-responsive {
    overflow-x: auto;
    padding: 1.5rem;
}
.matrix-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.matrix-table th, .matrix-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--bg-card-border);
}
.matrix-table th { font-family: var(--font-heading); font-size: 1rem; }
.col-highlight {
    background: rgba(79, 70, 229, 0.12);
    color: var(--accent);
}

/* Footer */
.footer {
    background: rgba(15, 23, 42, 0.95);
    border-top: 1px solid var(--bg-card-border);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}
.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}
.footer-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}
.footer-links {
    display: flex;
    gap: 1.5rem;
}
.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--accent);
}
.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-bottom a { color: var(--text-main); }

/* Changelog & Release Notes Widget */
.changelog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.changelog-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, border-color 0.2s;
}
.changelog-card:hover {
    transform: translateY(-3px);
    border-color: rgba(129, 140, 248, 0.4);
}
.changelog-card.pipeline {
    border-color: rgba(245, 158, 11, 0.3);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
}
.cl-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.cl-version {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-main);
}
.badge-released {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-pipeline {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}
.changelog-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}
.cl-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}
.cl-list {
    list-style: none;
    padding: 0;
}
.cl-list li {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

/* How It Works Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}
.step-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: 16px;
    position: relative;
}
.step-number {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, #818cf8 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.75rem;
}
.step-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}
.step-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 1.25rem;
}
.step-code {
    display: block;
    background: #090d16;
    border: 1px solid var(--bg-card-border);
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    font-family: var(--font-code);
    font-size: 0.78rem;
    color: #38bdf8;
    overflow-x: auto;
    white-space: nowrap;
}

/* FAQ Accordion */
.faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.2s;
}
.faq-item.active {
    border-color: rgba(129, 140, 248, 0.4);
}
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    background: none;
    border: none;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.98rem;
    font-weight: 600;
    text-align: left;
    padding: 1.1rem 1.4rem;
    cursor: pointer;
}
.faq-toggle-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent);
    font-size: 1.1rem;
    line-height: 1;
    transition: transform 0.25s ease;
}
.faq-item.active .faq-toggle-icon {
    transform: rotate(45deg);
}
.faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.25s ease;
}
.faq-item.active .faq-answer {
    grid-template-rows: 1fr;
}
.faq-answer p {
    overflow: hidden;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    padding: 0 1.4rem;
    transition: padding-bottom 0.25s ease;
}
.faq-item.active .faq-answer p {
    padding-bottom: 1.25rem;
}
.faq-answer a { color: var(--accent); }
.faq-answer code {
    font-family: var(--font-code);
    font-size: 0.85em;
    background: rgba(255, 255, 255, 0.06);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
}

/* Final CTA Band */
.cta-band {
    padding: 5rem 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.18) 0%, rgba(56, 189, 248, 0.12) 100%);
    border-top: 1px solid var(--bg-card-border);
}
.cta-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}
.cta-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}
.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

@media (max-width: 900px) {
    .playground-layout { grid-template-columns: 1fr; }
    .hero-title { font-size: 2.5rem; }
    .hero-logo-img { max-width: 220px; }
    .nav-links { display: none; }
    .cta-title { font-size: 1.75rem; }
}

/* QA & 316 Unit Test Coverage Grid */
.qa-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}
.qa-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 14px;
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}
.qa-card:hover {
    border-color: rgba(129, 140, 248, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.15);
}
.qa-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.qa-icon-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-main);
}
.qa-count-badge {
    background: rgba(16, 185, 129, 0.12);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-family: var(--font-code);
}
.qa-desc {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.45;
}
.qa-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.4rem;
    font-size: 0.75rem;
    color: #818cf8;
}

/* Visual Widgets & HTML Showcase */
.widgets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.widget-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 16px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.step-code {
    background: #090d16;
    border: 1px solid var(--bg-card-border);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    font-family: var(--font-code);
    font-size: 0.82rem;
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: hidden;
}
.step-code code {
    font-family: var(--font-code);
    font-size: inherit;
}
.widget-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.sparkline-demo {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 48px;
    background: rgba(15, 23, 42, 0.6);
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.sparkbar {
    flex: 1;
    background: linear-gradient(180deg, #38bdf8 0%, #4f46e5 100%);
    border-radius: 3px 3px 0 0;
    transition: height 0.3s ease;
}

/* Ecosystem & Cross-Product Suite */
.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.ecosystem-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    text-decoration: none;
    color: var(--text-main);
    position: relative;
}
.ecosystem-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.6);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(99, 102, 241, 0.2);
}
.ecosystem-card.featured {
    border-color: rgba(56, 189, 248, 0.4);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.95) 100%);
}
.ecosystem-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.ecosystem-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}
.ecosystem-badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    background: rgba(56, 189, 248, 0.12);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.25);
}
.ecosystem-badge.green {
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.25);
}
.ecosystem-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}
.ecosystem-desc {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}
.ecosystem-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid rgba(51, 65, 85, 0.4);
    font-size: 0.82rem;
    color: var(--accent);
    font-weight: 600;
}
.ecosystem-footer i {
    transition: transform 0.2s ease;
}
.ecosystem-card:hover .ecosystem-footer i {
    transform: translateX(4px);
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #1e293b;
    border: 1px solid #38bdf8;
    color: #f8fafc;
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    font-size: 0.9rem;
    font-weight: 600;
    z-index: 9999;
    opacity: 0;
    transform: translateY(12px);
    transition: all 0.3s ease;
    pointer-events: none;
}
.toast-notification.show {
    opacity: 1;
    transform: translateY(0);
}