/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent !important;
}

::selection {
    color: var(--color-bg-primary);
    background: var(--color-text-primary);
}

:root {
    /* Color Palette - OpenDraft (Yellow branding) */
    --color-primary: #f7ca13;
    --color-primary-hover: #e0b50f;
    --color-primary-dark: #c99f0d;
    --color-primary-light: #ffe082;
    --color-secondary: #f7ca13;
    --color-secondary-hover: #ddb00f;
    --color-accent: #f5c518;
    
    /* Accent shadows/glows (yellow) */
    --shadow-accent-weak: rgba(247, 202, 19, 0.2);
    --shadow-accent: rgba(247, 202, 19, 0.3);
    --shadow-accent-strong: rgba(247, 202, 19, 0.45);
    --glow-accent-weak: rgba(247, 202, 19, 0.2);
    --glow-accent: rgba(247, 202, 19, 0.25);
    --glow-accent-strong: rgba(247, 202, 19, 0.3);
    /* use existing bg/border vars for logo/nav */
    
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #e7e7e7;
    
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;
    
    --color-shadow-light: rgba(0, 0, 0, 0.05);
    --color-shadow-medium: rgba(0, 0, 0, 0.1);
    --color-shadow-heavy: rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-primary: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-mono: 'Courier Prime', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-text-primary: #ffffff;
        --color-text-secondary: #cccccc;
        --color-text-muted: #999999;
        
        --color-bg-primary: #1a1a1a;
        --color-bg-secondary: #2a2a2a;
        --color-bg-tertiary: #333333;
        
        --color-border: #404040;
        --color-border-light: #2a2a2a;
        
        --color-shadow-light: rgba(0, 0, 0, 0.1);
        --color-shadow-medium: rgba(0, 0, 0, 0.2);
        --color-shadow-heavy: rgba(0, 0, 0, 0.3);
    }
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.loaded {
    opacity: 1;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg-primary);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
    padding: var(--spacing-sm) 0;
}

.navbar.visible {
    transform: translateY(0);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    text-shadow: 0 0 10px var(--glow-accent);
    margin: 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-logo {
    width: 56px;
    aspect-ratio: 361/201;
    display: block;
}

.nav-links {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    cursor: pointer;
    font-family: var(--font-mono);
}

.nav-btn-primary {
    background-color: var(--color-primary);
    color: #1a1a1a;
    border-color: var(--color-primary);
}

.nav-btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-accent-strong);
}

.nav-btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.nav-btn-secondary:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-text-secondary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--color-shadow-medium);
}
/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: var(--spacing-3xl) var(--spacing-md);
}

/* Intro overlay and logo */
.intro-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: var(--color-bg-primary);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    transition: backdrop-filter 900ms cubic-bezier(.2,.8,.2,1), -webkit-backdrop-filter 900ms cubic-bezier(.2,.8,.2,1);
    pointer-events: none;
}

#intro-logo {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(1.6);
    transform-origin: center center;
    width: min(420px, 46vw);
    height: auto;
    background: #ededed;
    border-radius: 12px;
    padding: 6px;
    box-shadow: 0 28px 80px rgba(0,0,0,0.28);
    transition: transform 900ms cubic-bezier(.2,.8,.2,1), box-shadow 900ms ease;
    will-change: transform;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.gradient-orb-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    top: 15%;
    left: -5%;
    animation-delay: 0s;
}

.gradient-orb-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary-dark));
    bottom: 15%;
    right: -5%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

.hero-content {
    max-width: 800px;
    padding: 0 var(--spacing-md);
    z-index: 1;
}

.hero-title {
    margin-bottom: var(--spacing-lg);
}

.app-logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    perspective: 800px;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.app-logo {
    width: clamp(96px, 16vw, 160px);
    height: auto;
    background-color: #ededed;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: block;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
    transition: box-shadow var(--transition-fast);
    will-change: transform, box-shadow, filter;
    position: relative;
    z-index: 2001;
}

@media (width < 800px) {
    .app-logo {
        padding: var(--spacing-md) var(--spacing-xs);
    }
}

.app-logo:hover,
.app-logo:focus-visible {
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.25);
}

/* Pulse after intro lands */
@keyframes logoPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.04); }
    100% { transform: scale(1); }
}

.logo-pulse {
    animation: logoPulse 600ms ease-out;
}

.title-main {
    display: block;
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.04em;
    font-family: var(--font-primary);
    text-shadow: 0 0 20px var(--glow-accent-strong);
}

.title-tagline {
    display: block;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 400;
    color: var(--color-text-secondary);
    letter-spacing: 0.01em;
}

.hero-description {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    font-family: var(--font-mono);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    min-width: 140px;
}

.btn svg {
    transition: transform var(--transition-fast);
}

.btn:hover svg {
    transform: translate(2px, -2px);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #010101;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-accent);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-text-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--color-shadow-medium);
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
    font-family: var(--font-mono);
}

.scroll-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    border-radius: 1px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}


/* Features Section */
.features {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--shadow-accent-weak) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    z-index: 0;
}

.features::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -15%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    z-index: 0;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    font-family: var(--font-primary);
    position: relative;
    z-index: 1;
    text-shadow: 0 0 15px var(--glow-accent-weak);
}

.section-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-family: var(--font-mono);
    position: relative;
    z-index: 1;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

@media (width < 720px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

.feature-card {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(20px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}


.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-accent-weak);
    border-color: var(--shadow-accent);
    background: rgba(0, 0, 0, 0.15);
}


.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #010101;
    box-shadow: 0 8px 25px var(--shadow-accent);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-family: var(--font-mono);
}

.features-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.features-cta p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-mono);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Preview Section */
.preview {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.preview::before {
    content: '';
    position: absolute;
    top: 20%;
    left: -10%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, color-mix(in srgb, var(--shadow-accent-weak) 50%, transparent) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    z-index: 0;
}

.preview::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: -5%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    z-index: 0;
}

.preview-container {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.preview-frame {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px var(--color-shadow-heavy);
    overflow: hidden;
    border: 1px solid var(--color-border);
    max-width: 800px;
    width: 100%;
}

.preview-header {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.preview-dots {
    display: flex;
    gap: var(--spacing-xs);
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-text-muted);
}

.preview-dots span:nth-child(1) { background-color: #ff5f57; }
.preview-dots span:nth-child(2) { background-color: #ffbd2e; }
.preview-dots span:nth-child(3) { background-color: #28ca42; }

.preview-title {
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-left: var(--spacing-sm);
}

.preview-content {
    padding: 0;
    background-color: var(--color-bg-primary);
    overflow: hidden;
}

.app-screenshot {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    transition: transform var(--transition-normal);
    object-fit: contain;
    max-height: 600px;
}

.app-screenshot:hover {
    transform: scale(1.02);
}

.video-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

.video-placeholder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--shadow-accent-weak) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    transform: translate(-50%, -50%);
    z-index: 0;
}

.play-button {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 1;
    cursor: pointer;
}

.play-button:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 30px var(--shadow-accent);
}

.video-placeholder p {
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
    text-align: center;
}

@media (width < 720px) {
    .app-screenshot {
        max-height: 400px;
        object-fit: contain;
    }
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-secondary) 100%);
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, color-mix(in srgb, var(--shadow-accent-weak) 30%, transparent) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    z-index: 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.footer-brand h3 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-primary);
    text-shadow: 0 0 10px var(--glow-accent-weak);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.footer-logo {
    width: 86px;
    aspect-ratio: 361/201;
    display: block;
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

.footer-brand a {
    color: var(--color-text-secondary);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-normal);
    padding: 2px 4px;
    border-radius: 4px;
}

.footer-brand a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transition: height var(--transition-fast);
    border-radius: 1px;
    text-decoration: none;
    z-index: -1;
}

.footer-brand a:hover {
    color: #010101;
}

.footer-brand a:hover::before {
    height: 100%;
}

.footer-credits {
    color: var(--color-text-muted) !important;
    font-size: 0.75rem !important;
    font-style: italic;
    margin-top: var(--spacing-xs);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-normal);
    font-family: var(--font-mono);
    padding: 4px 8px;
    border-radius: 4px;
}

.footer-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transition: height var(--transition-normal);
    border-radius: 1px;
    z-index: -1;
}

.footer-link:hover {
    color: #010101;
}

.footer-link:hover::before {
    height: 100%;
}

/* Footer Donation Section */
.footer-donation {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, color-mix(in srgb, var(--shadow-accent-weak) 40%, transparent) 0%, rgba(59, 130, 246, 0.05) 100%);
    border: 1px solid color-mix(in srgb, var(--shadow-accent) 50%, transparent);
    border-radius: 12px;
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.footer-donation::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, var(--shadow-accent-weak) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    z-index: 0;
}

.donation-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.donation-icon {
    font-size: 2rem;
    flex-shrink: 0;
    filter: drop-shadow(0 0 10px var(--shadow-accent));
}

.donation-text h4 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    text-shadow: 0 0 10px var(--glow-accent-weak);
}

.donation-text p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    font-family: var(--font-mono);
}

.donation-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.donation-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-mono);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.donation-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.donation-btn:hover::before {
    left: 100%;
}

.donation-btn.paypal {
    background: linear-gradient(135deg, #0070ba 0%, #003087 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 112, 186, 0.2);
}

.donation-btn.paypal:hover {
    background: linear-gradient(135deg, #005ea6 0%, #002a6b 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 112, 186, 0.4);
}

.donation-btn.upi {
    background: linear-gradient(135deg, #f7ca13 0%, #c99f0d 100%);
    color: #1a1a1a;
    box-shadow: 0 4px 15px var(--shadow-accent-weak);
}

.donation-btn.upi:hover {
    background: linear-gradient(135deg, #e0b50f 0%, #5a4a00 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-accent-strong);
}

.donation-btn span {
    font-size: 1rem;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.3));
}

.donation-btn .material-symbols-rounded {
    font-size: 1rem;
    color: currentColor;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.3));
    font-family: 'Material Symbols Rounded', sans-serif;
    font-weight: normal;
    font-style: normal;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
}

/* Toast notification styles */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #10b981;
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    font-family: var(--font-mono, monospace);
    font-size: 14px;
    max-width: 300px;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toast-icon {
    font-size: 18px;
    font-family: 'Material Symbols Rounded', sans-serif;
}

.toast-message {
    font-weight: 500;
}

/* Responsive Design */
@media (width < 720px) {
    .navbar {
        padding: var(--spacing-xs) 0;
    }
    
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-brand h3 {
        font-size: 1.1rem;
    }
    
    .nav-links {
        gap: var(--spacing-xs);
    }
    
    .nav-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .navbar {
        padding: var(--spacing-sm) 0;
    }
    .hero {
        padding: var(--spacing-2xl) var(--spacing-md);
        min-height: 90vh;
    }
    
    .gradient-orb-1 {
        width: 200px;
        height: 200px;
        top: 10%;
        left: -10%;
    }
    
    .gradient-orb-2 {
        width: 150px;
        height: 150px;
        bottom: 10%;
        right: -10%;
    }
    
    .hero-content {
        max-width: 100%;
        padding: 0;

    }

    .title-main {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }
    
    .title-tagline {
        font-size: clamp(1rem, 4vw, 1.2rem);
    }
    
    .hero-description {
        font-size: clamp(0.9rem, 3vw, 1.1rem);
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-2xl);
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        padding: 0.8rem 1.2rem;
    }
    
    .features {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        margin-top: var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-xs);
    }
    
    .feature-card h3 {
        font-size: 1.1rem;
    }
    
    .feature-card p {
        font-size: 0.9rem;
    }
    
    .preview {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .preview-frame {
        margin: 0;
        box-shadow: 0 10px 30px var(--color-shadow-medium);
    }
    
    .preview-content {
        padding: 0;
    }
    
    .app-screenshot {
        max-height: 300px;
    }
    
    
    .video-placeholder {
        padding: var(--spacing-xl);
        min-height: 200px;
    }
    
    .play-button {
        width: 60px;
        height: 60px;
    }
    
    .video-placeholder p {
        font-size: 1rem;
    }
    
    .footer {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .footer-brand h3 {
        font-size: 1.1rem;
    }
    
    .footer-brand p {
        font-size: 0.8rem;
    }
    
    .footer-credits {
        font-size: 0.7rem !important;
    }
    
    .footer-donation {
        margin-top: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .donation-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .donation-icon {
        font-size: 1.8rem;
    }
    
    .donation-text h4 {
        font-size: 1rem;
    }
    
    .donation-text p {
        font-size: 0.85rem;
    }
    
    .donation-options {
        justify-content: center;
        gap: var(--spacing-xs);
    }
    
    .donation-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
        flex: 1;
        min-width: 110px;
    }
    
    .features-cta {
        margin-top: var(--spacing-lg);
        padding: var(--spacing-lg);
        margin: var(--spacing-lg) var(--spacing-xs) 0;
    }
    
    .features-cta p {
        font-size: 1rem;
    }
    
}

@media (width >= 720px) and (width < 1024px) {
    .gradient-orb-1 {
        width: 250px;
        height: 250px;
        top: 12%;
        left: -8%;
    }
    
    .gradient-orb-2 {
        width: 180px;
        height: 180px;
        bottom: 12%;
        right: -8%;
    }
}


/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
.btn:focus,
.footer-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .hero-background,
    .hero-scroll,
    .gradient-orb {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }
}