/* ===================================
   QR Code Generator Pro - Styles
   Blue & White Color Scheme
   =================================== */

:root {
    --bg-primary: #0a1628;
    --bg-secondary: #0f2140;
    --bg-card: #142952;
    --bg-input: #0d1e38;
    
    --text-primary: #ffffff;
    --text-secondary: #94a3c4;
    --text-muted: #5a6d8a;
    
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-light: #93c5fd;
    --accent-glow: rgba(59, 130, 246, 0.3);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.15);
    
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --container-width: 1200px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.background-pattern {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-primary) 0%, #050d1a 100%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 22, 40, 0.9);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.1rem;
    color: white;
}

.logo span {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
}

.nav {
    display: flex;
    gap: 2rem;
}

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

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

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-light);
    margin-bottom: 1rem;
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.hero h1 em {
    font-style: italic;
    color: var(--accent-light);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Paywall */
.paywall-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow-y: auto;
}

.paywall-overlay.hidden { display: none; }

.paywall-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 2.5rem 3rem;
    max-width: 520px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.paywall-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    color: white;
}

.paywall-icon svg {
    width: 28px;
    height: 28px;
}

.paywall-content h2 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.paywall-content > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.paywall-content strong {
    color: var(--accent-light);
    font-size: 1.4rem;
}

.paywall-features {
    list-style: none;
    text-align: left;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.paywall-features li {
    padding: 0.4rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.payment-options { margin-bottom: 1.5rem; }

.stripe-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #635bff, #7c3aed);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.stripe-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 91, 255, 0.4);
}

.divider {
    display: flex;
    align-items: center;
    margin: 1rem 0;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    padding: 0 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.payment-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
    text-align: center;
}

.already-purchased {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.already-purchased p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.unlock-btn {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.unlock-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 22, 40, 0.9);
    z-index: 1001;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.modal-overlay.show { display: flex; }

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 400px;
    width: 100%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-content h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.access-input {
    width: 100%;
    padding: 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.access-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.submit-code-btn {
    width: 100%;
    padding: 1rem;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.error-message {
    color: #ef4444;
    font-size: 0.9rem;
    margin-top: 1rem;
    display: none;
}

.error-message.show { display: block; }

/* App Section */
.app-section {
    padding: 2rem 0 4rem;
}

.app-section.locked {
    filter: blur(5px);
    pointer-events: none;
}

.app-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.app-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.app-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.app-card h4 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Content Tabs */
.content-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: var(--accent-primary);
    color: white;
}

/* Input Sections */
.input-section {
    display: none;
    margin-bottom: 1.5rem;
}

.input-section.active { display: block; }

.input-section label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.text-input {
    width: 100%;
    padding: 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-sans);
    margin-bottom: 1rem;
}

.text-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.text-input::placeholder {
    color: var(--text-muted);
}

.textarea {
    min-height: 100px;
    resize: vertical;
}

.textarea.small { min-height: 60px; }

.textarea.batch-textarea { min-height: 150px; }

.select-input {
    width: 100%;
    padding: 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
}

/* Customization */
.customization-section {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
}

.color-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.color-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-input);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.color-picker {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
}

.color-value {
    font-family: 'SF Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.value-display {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-light);
}

.slider {
    width: 100%;
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    cursor: pointer;
}

.style-btns {
    display: flex;
    gap: 0.5rem;
}

.style-btn {
    flex: 1;
    padding: 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.style-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.style-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: var(--accent-primary);
    color: white;
}

/* Logo Upload */
.logo-upload {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.file-input { display: none; }

.file-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px dashed var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-label:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.file-name {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.remove-logo {
    background: var(--bg-card);
    border: none;
    color: var(--text-secondary);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
}

.remove-logo:hover {
    background: #ef4444;
    color: white;
}

/* Generate Button */
.generate-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: 1rem;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.generate-btn.secondary {
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    width: auto;
}

.generate-btn.secondary:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* Preview Panel */
.preview-panel {
    display: flex;
    flex-direction: column;
}

.qr-preview {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border-radius: var(--radius-lg);
    min-height: 300px;
    padding: 2rem;
    position: relative;
}

/* Hide qrcodejs title tooltip and style the generated elements */
.qr-preview > div {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-preview img,
.qr-preview canvas {
    border-radius: var(--radius-sm);
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* Hide the title attribute that qrcodejs adds */
.qr-preview img[title] {
    title: none;
}

.qr-placeholder {
    text-align: center;
    color: var(--text-muted);
}

.qr-placeholder svg {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.qr-placeholder p {
    font-size: 0.9rem;
}

#qrCanvas {
    max-width: 100%;
    border-radius: var(--radius-md);
}

/* Download Section */
.download-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.download-btns {
    display: flex;
    gap: 0.75rem;
}

.download-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.download-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* Batch Card */
.batch-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(59, 130, 246, 0.05) 100%);
}

.batch-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.batch-header h3 { margin-bottom: 0.25rem; }

.card-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.batch-toggle {
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.batch-toggle:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.batch-toggle.open svg {
    transform: rotate(180deg);
}

.batch-content {
    display: none;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.batch-content.show { display: block; }

.batch-content label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.batch-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.batch-count {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.batch-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.batch-item {
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.batch-item canvas {
    max-width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.batch-item-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    word-break: break-all;
}

.batch-item button {
    margin-top: 0.5rem;
    padding: 0.4rem 0.75rem;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.75rem;
    cursor: pointer;
}

/* Features Section */
.features-section {
    padding: 4rem 0;
    text-align: center;
}

.features-section h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    margin-bottom: 3rem;
}

.features-section h2 em {
    font-style: italic;
    color: var(--accent-light);
}

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

.feature-card {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: var(--accent-light);
}

.feature-card h4 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Pricing Section */
.pricing-section {
    padding: 4rem 0;
    text-align: center;
}

.pricing-section h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.pricing-section h2 em {
    font-style: italic;
    color: var(--accent-light);
}

.pricing-subtitle {
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.pricing-single {
    max-width: 400px;
    margin: 0 auto;
}

.pricing-card {
    padding: 2.5rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(59, 130, 246, 0.1) 100%);
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-xl);
    text-align: center;
}

.pricing-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.pricing-header h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.price {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.price span {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-muted);
}

.price-note {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent-light);
    font-weight: 600;
}

/* Footer */
.footer {
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--accent-light); }

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border-radius: var(--radius-md);
    font-weight: 500;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

/* Responsive */
@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav { gap: 1.5rem; }
    
    .content-tabs {
        justify-content: center;
    }
    
    .color-row {
        grid-template-columns: 1fr;
    }
    
    .download-btns {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Mobile Paywall Styles */
    .paywall-overlay {
        padding: 1rem;
    }

    .paywall-content {
        padding: 1.5rem;
    }

    .paywall-icon {
        width: 48px;
        height: 48px;
    }

    .paywall-icon svg {
        width: 24px;
        height: 24px;
    }

    .paywall-content h2 {
        font-size: 1.4rem;
    }

    .paywall-features {
        padding: 1rem;
    }

    .paywall-features li {
        font-size: 0.85rem;
    }

    .stripe-btn {
        padding: 0.9rem 1.25rem;
        font-size: 0.95rem;
    }
}