:root {
    --bg-dark: #050505;
    --bg-card: rgba(20, 20, 20, 0.8);
    --neon-green: #00ff88;
    --neon-blue: #00d4ff;
    --neon-purple: #cc00ff;
    --text-main: #e0e0e0;
    --text-dim: #a0a0a0;
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
}

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

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

/* Animated Background */
.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.glow-circle {
    position: absolute;
    width: 40vw;
    height: 40vw;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: float 20s infinite alternate;
}

.glow-1 { background: var(--neon-green); top: -10%; left: -10%; }
.glow-2 { background: var(--neon-purple); bottom: -10%; right: -10%; animation-delay: -5s; }
.glow-3 { background: var(--neon-blue); top: 40%; left: 30%; animation-delay: -10s; }

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.neon-text {
    color: var(--neon-green);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 120px;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(to right, #fff, var(--neon-green), var(--neon-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto 40px;
}

.btn-primary {
    display: inline-block;
    padding: 16px 32px;
    background: var(--neon-green);
    color: #000;
    text-decoration: none;
    font-weight: 700;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

/* QR Tool Section */
.tool-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

@media (max-width: 992px) {
    .tool-container { grid-template-columns: 1fr; }
}

/* Tabs */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 20px;
}

.tab-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-dim);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.tab-btn.active {
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--neon-green);
    color: var(--neon-green);
}

.tab-btn:hover:not(.active) {
    border-color: var(--text-dim);
    color: var(--text-main);
}

/* Form Controls */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-dim);
    font-weight: 500;
}

.input-field {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 12px 16px;
    border-radius: 8px;
    color: #fff;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--neon-blue);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Customization Accordion */
.accordion-item {
    margin-bottom: 15px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
}

.accordion-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 15px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.accordion-content {
    padding: 20px;
    display: none;
    background: rgba(0, 0, 0, 0.2);
}

.accordion-item.active .accordion-content {
    display: block;
}

/* Preview Area */
.preview-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    position: sticky;
    top: 40px;
}

#qr-preview {
    background: #fff;
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 30px;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    min-width: 280px;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    max-width: 100%;
}

#qr-preview canvas, #qr-preview svg {
    max-width: 100%;
    height: auto !important;
}

.download-btns {
    display: flex;
    gap: 15px;
    width: 100%;
}

.btn-download {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-png { background: var(--neon-blue); color: #000; }
.btn-svg { background: transparent; border: 1px solid var(--neon-blue); color: var(--neon-blue); }

.btn-download:hover { transform: translateY(-2px); opacity: 0.9; }

/* Share Section */
.share-section {
    margin-top: 30px;
    width: 100%;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    padding-top: 20px;
}

.share-section p {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 15px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.share-btns {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.3s ease;
}

.share-btn:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.1);
}

.share-btn.twitter:hover { color: #1DA1F2; border-color: #1DA1F2; box-shadow: 0 0 15px rgba(29, 161, 242, 0.3); }
.share-btn.facebook:hover { color: #4267B2; border-color: #4267B2; box-shadow: 0 0 15px rgba(66, 103, 178, 0.3); }
.share-btn.linkedin:hover { color: #0077B5; border-color: #0077B5; box-shadow: 0 0 15px rgba(0, 119, 181, 0.3); }
.share-btn.whatsapp:hover { color: #25D366; border-color: #25D366; box-shadow: 0 0 15px rgba(37, 211, 102, 0.3); }
.share-btn.telegram:hover { color: #0088cc; border-color: #0088cc; box-shadow: 0 0 15px rgba(0, 136, 204, 0.3); }
.share-btn.reddit:hover { color: #FF4500; border-color: #FF4500; box-shadow: 0 0 15px rgba(255, 69, 0, 0.3); }
.share-btn.copy:hover { color: var(--neon-green); border-color: var(--neon-green); box-shadow: 0 0 15px rgba(0, 255, 136, 0.3); }

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    padding: 40px;
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-green);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--neon-green);
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.faq-question {
    padding: 20px 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    color: var(--text-dim);
    padding-bottom: 0;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding-bottom: 20px;
}

/* Footer */
footer {
    padding: 60px 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--text-dim);
}

/* Icon SVG placeholder styling */
svg.icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    
    .home-page .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 60px;
    }

    .home-page .hero-content h1 {
        font-size: 2.2rem;
        line-height: 1.2;
    }

    .home-page .hero-content h1 br {
        display: none;
    }

    .tool-container {
        padding: 20px;
        gap: 30px;
        border-radius: 16px;
    }

    .tabs {
        justify-content: center;
        gap: 8px;
    }

    .tab-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
        flex: 1 1 calc(50% - 10px);
        justify-content: center;
        text-align: center;
    }

    #qr-preview {
        min-width: unset;
        min-height: unset;
        width: 100%;
        padding: 15px;
    }

    .preview-area {
        position: static;
        margin-top: 20px;
    }

    .download-btns {
        flex-wrap: wrap;
        gap: 10px;
    }

    .btn-download {
        flex: 1 1 calc(50% - 5px);
        padding: 12px 8px;
        font-size: 0.9rem;
    }

    .features-grid {
        gap: 20px;
    }

    .feature-card {
        padding: 25px;
    }

    footer .container > div {
        flex-wrap: wrap;
    }

    section {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .tab-btn {
        flex: 1 1 100%;
    }
    
    .btn-download {
        flex: 1 1 100%;
    }
}

/* 3-Step Flow */
.step-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    text-align: center;
}

.step-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    padding: 20px;
    border-radius: 16px;
    position: relative;
}

.step-number {
    width: 30px;
    height: 30px;
    background: var(--neon-blue);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 10px;
    font-size: 0.9rem;
}

.step-item h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: var(--text-main);
}

.step-item p {
    font-size: 0.8rem;
    color: var(--text-dim);
}

@media (max-width: 768px) {
    .step-flow { grid-template-columns: 1fr; }
}

/* Trust Signals */
.trust-signals {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--neon-green);
    background: rgba(0, 255, 136, 0.05);
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid rgba(0, 255, 136, 0.2);
}

/* Loading & Success */
#loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: 16px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--neon-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

#success-msg {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--neon-green);
    color: #000;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
    display: none;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* CTA Buttons */
.cta-container {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

.btn-cta {
    flex: 1;
    padding: 16px;
    border-radius: 8px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-generate {
    background: var(--neon-green);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

.btn-download-qr {
    background: var(--neon-blue);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.btn-cta:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.seo-content h2 {
    color: var(--text-main);
    margin: 30px 0 15px;
}

.seo-content p {
    margin-bottom: 15px;
}