/* CSS Reset and Variables */
:root {
    --bg-base: #050505;
    --text-main: #ffffff;
    --text-muted: #a1a1aa;
    --accent: #0052FF;
    --accent-glow: rgba(0, 82, 255, 0.5);
    
    /* Theme color for QR Code Generator product */
    --theme-color: #8b5cf6; /* Violet */
    --theme-bg: rgba(139, 92, 246, 0.08); /* #8b5cf614 approx */
    --theme-border: rgba(139, 92, 246, 0.2); /* #8b5cf633 approx */

    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.06);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Effects */
.grid-bg {
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -2;
    pointer-events: none;
}

.glow-container {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.glow-1 {
    top: -10%;
    left: 20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,82,255,0.15) 0%, transparent 70%);
}

.glow-2 {
    bottom: -10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0,82,255,0.1) 0%, transparent 70%);
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 28px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.text-accent {
    color: var(--theme-color); /* Changed to product theme color */
    font-style: italic;
    font-family: serif;
    font-weight: normal;
    padding: 0 4px;
}

/* Header */
.navbar {
    padding: 24px 0;
    position: relative;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-accent {
    color: var(--accent);
    font-family: serif;
    font-style: italic;
    font-weight: normal;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-main);
}

/* Mobile Nav Structure */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    z-index: 101;
}

.mobile-nav-overlay {
    position: absolute;
    top: 80px;
    right: 24px;
    width: calc(100% - 48px);
    max-width: 300px;
    background: rgba(20, 20, 25, 0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    z-index: 999;
    display: flex;
    flex-direction: column;
    padding: 16px 24px;
    
    /* Animation */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu-close {
    display: none;
}

.mobile-link {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
    text-decoration: none;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: color 0.3s ease;
    text-align: left;
}
.mobile-link:last-child {
    border-bottom: none;
}


/* Hero Section */
.hero-section {
    padding: 80px 24px 60px;
    text-align: center;
}

.hero-text {
    max-width: 800px;
    margin: 0 auto 60px;
}

.hero-text h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.hero-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Ad Placeholders */
.ad-placeholder {
    background: rgba(255,255,255,0.03);
    border: 1px dashed rgba(255,255,255,0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin: 0 auto;
}

.ad-top {
    width: 100%;
    max-width: 728px;
    height: 90px;
    margin-bottom: 40px;
}

.ad-bottom {
    width: 100%;
    max-width: 728px;
    height: 90px;
    margin-top: 60px;
    margin-bottom: 60px;
}

/* Generator Layout */
.generator-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px;
}

.generator-layout {
    display: flex;
    gap: 60px;
    align-items: stretch;
}

.generator-controls {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
    text-align: left;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #71717a;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper svg {
    position: absolute;
    left: 16px;
    color: #71717a;
    width: 18px;
    height: 18px;
}

.input-wrapper input {
    width: 100%;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 16px 16px 16px 44px;
    color: var(--text-main);
    font-size: 1rem;
    font-family: var(--font-body);
    outline: none;
    transition: border-color 0.3s ease;
}

.input-wrapper input:focus {
    border-color: var(--theme-color);
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 16px;
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    background: transparent;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(255,255,255,0.1);
}

.color-hex {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-main);
}

.btn-primary {
    background: var(--theme-color);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 18px;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.2);
    margin-top: auto;
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(139, 92, 246, 0.3);
}

/* Generator Preview */
.generator-preview {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    background: rgba(255,255,255,0.01);
    border-radius: 20px;
    padding: 32px;
    border: 1px dashed rgba(255,255,255,0.1);
}

.qr-container {
    background: #fff;
    padding: 24px;
    border-radius: 16px;
    min-width: 250px;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    transition: transform 0.3s ease;
}

.qr-container:hover {
    transform: scale(1.02);
}

.qr-container img, .qr-container canvas {
    width: 100% !important;
    height: auto !important;
    max-width: 250px;
    display: block;
}

.qr-placeholder {
    color: #a1a1aa;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.qr-placeholder svg {
    width: 32px;
    height: 32px;
    opacity: 0.5;
}

.btn-secondary {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: #fff;
    border-radius: 12px;
    padding: 14px 24px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
}

/* Sections */
.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 48px;
}

.how-it-works-section, .faq-section {
    padding: 80px 24px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* Clevra Product Card Format (Replicated from Clevra Main Site) */
.feature-card {
    padding: 32px;
    text-align: left;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.15); /* Product Glow */
    border-color: rgba(139, 92, 246, 0.3);
}

.feature-icon-container {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--theme-bg);
    border: 1px solid var(--theme-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon-container svg {
    color: var(--theme-color);
    width: 24px;
    height: 24px;
}

.feature-tagline {
    font-size: 11px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--theme-color);
    margin-bottom: 4px;
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    transition: color 0.3s ease;
}

.feature-card:hover h3 {
    color: #fff;
}

.feature-card p {
    color: #9f9fa9;
    font-size: 14.5px;
    line-height: 1.6;
}

/* SEO Content Section */
.seo-section {
    padding: 20px 24px 60px;
}

.seo-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 48px;
    text-align: left;
}

.seo-content h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: #fff;
}

.seo-content h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 16px;
    color: #fff;
}

.seo-content p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

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

/* FAQ */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    padding: 24px;
}

.faq-item {
    border-bottom: 1px solid var(--glass-border);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 24px 0;
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer p {
    color: var(--text-muted);
    padding-bottom: 24px;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

/* Footer */
.footer {
    margin-top: auto;
    border-top: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.2);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 12px;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--glass-border);
    padding-top: 30px;
}

/* Page Standard Layout (for legal/about pages) */
.page-header {
    padding: 100px 24px 60px;
    text-align: center;
}
.page-header h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
}
.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    margin-bottom: 100px;
}
.page-content h2 {
    font-family: var(--font-heading);
    margin-top: 40px;
    margin-bottom: 20px;
}
.page-content p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

/* Responsive Media Queries (Mobile First & Tablet) */
@media (max-width: 900px) {
    .generator-layout {
        flex-direction: column;
        gap: 40px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .hero-section {
        padding: 40px 16px;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none; /* Hide on small mobile, replaced by hamburger menu */
    }

    .mobile-menu-btn {
        display: block; /* Show hamburger icon on mobile */
    }

    .generator-card {
        padding: 24px 16px;
        border-radius: 20px;
    }

    .ad-top, .ad-bottom {
        max-width: 320px;
        height: 50px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}