/* ===================================
   PupCid's Little TikTok Helper - ltth.app
   Complete Branding & Design System
   =================================== */

/* ===================================
   CSS Custom Properties - Brand Colors
   =================================== */
:root {
    /* Primary Brand Colors */
    --color-primary: #12a116;           /* Main Branding Green */
    --color-primary-light: #19c724;     /* Secondary Accent Green */
    --color-primary-hover: #42ff73;     /* Neon Green for Hover/Success */
    --color-primary-dark: #0d7a10;      /* Darker shade for contrast */
    
    /* Complementary Colors */
    --color-complementary: #6412a1;     /* Purple for visual balance */
    --color-complementary-alt: #7a1cd6; /* Alternative purple */
    
    /* Neutral Colors - Light Mode */
    --color-bg-light: #f5f7f4;          /* Off-White Background */
    --color-surface-light: #ffffff;     /* Pure White Surface */
    --color-text-light: #0e0f10;        /* Deep Anthracite Text */
    --color-text-secondary-light: #4a4b4d;
    --color-border-light: #e0e2df;
    
    /* Neutral Colors - Dark Mode */
    --color-bg-dark: #0e0f10;           /* Deep Anthracite Background */
    --color-bg-dark-alt: #111213;       /* Alternative Dark Background */
    --color-surface-dark: #1a1b1d;      /* Dark Surface */
    --color-text-dark: #f5f7f4;         /* Off-White Text */
    --color-text-secondary-dark: #b5b7b4;
    --color-border-dark: #2a2b2d;
    
    /* Active Theme Colors (Light Mode Default) */
    --color-bg: var(--color-bg-light);
    --color-surface: var(--color-surface-light);
    --color-text: var(--color-text-light);
    --color-text-secondary: var(--color-text-secondary-light);
    --color-border: var(--color-border-light);
    
    /* Semantic Colors */
    --color-success: var(--color-primary-hover);
    --color-warning: #ffa726;
    --color-error: #ef5350;
    --color-info: #29b6f6;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-display: 'Inter', 'SF Pro Display', -apple-system, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Droid Sans Mono', 'Source Code Pro', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */
    
    /* Spacing Scale */
    --space-1: 0.25rem;      /* 4px */
    --space-2: 0.5rem;       /* 8px */
    --space-3: 0.75rem;      /* 12px */
    --space-4: 1rem;         /* 16px */
    --space-5: 1.25rem;      /* 20px */
    --space-6: 1.5rem;       /* 24px */
    --space-8: 2rem;         /* 32px */
    --space-10: 2.5rem;      /* 40px */
    --space-12: 3rem;        /* 48px */
    --space-16: 4rem;        /* 64px */
    --space-20: 5rem;        /* 80px */
    --space-24: 6rem;        /* 96px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(18, 161, 22, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Mode Theme */
[data-theme="dark"] {
    --color-bg: var(--color-bg-dark);
    --color-surface: var(--color-surface-dark);
    --color-text: var(--color-text-dark);
    --color-text-secondary: var(--color-text-secondary-dark);
    --color-border: var(--color-border-dark);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
}

/* ===================================
   Base Styles & Reset
   =================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition-base), color var(--transition-base);
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--text-5xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-4);
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

code {
    background-color: var(--color-surface);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

pre {
    background-color: var(--color-surface);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow-x: auto;
}

pre code {
    background: none;
    padding: 0;
    border: none;
}

/* ===================================
   Layout Components
   =================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
    object-fit: contain;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-display);
}

/* Mascot Styles */
.hero-mascot {
    max-width: 300px;
    width: 100%;
    height: auto;
    margin: 0 auto var(--space-8);
    display: block;
    animation: float 3s ease-in-out infinite;
}

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

.cta-mascot {
    max-width: 200px;
    width: 100%;
    height: auto;
    margin: 0 auto var(--space-6);
    display: block;
    animation: wave 2s ease-in-out infinite;
}

@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-10deg);
    }
    75% {
        transform: rotate(10deg);
    }
}

.nav-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: var(--z-modal);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-surface);
    padding: var(--space-20) var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-2xl);
    z-index: var(--z-fixed);
}

.nav-menu.active {
    right: 0;
}

.nav-link {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    color: var(--color-text);
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(18, 161, 22, 0.1);
    color: var(--color-primary);
}

.nav-link.nav-cta {
    background-color: var(--color-primary);
    color: white;
    text-align: center;
}

.nav-link.nav-cta:hover {
    background-color: var(--color-primary-dark);
    color: white;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        padding: 0;
        flex-direction: row;
        align-items: center;
        box-shadow: none;
        background: none;
    }
    
    .nav-link {
        padding: var(--space-2) var(--space-4);
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    padding: var(--space-4) 0 var(--space-4);
    background: linear-gradient(135deg, var(--color-bg) 0%, rgba(18, 161, 22, 0.05) 100%);
}

@media (min-width: 768px) {
    .hero {
        padding: var(--space-6) 0 var(--space-5);
    }
}

@media (min-width: 1024px) {
    .hero {
        padding: var(--space-8) 0 var(--space-6);
    }
}

.hero .container {
    display: grid;
    gap: var(--space-8);
}

.hero-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
    line-height: 1.1;
}

.hero-highlight {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-6);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.hero-visual {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
}

.hero-visual-card {
    background-color: var(--color-surface);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-4);
}

.hero-visual-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.visual-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
}

.visual-icon svg {
    width: 100%;
    height: 100%;
}

.visual-text {
    font-size: var(--text-lg);
    font-weight: 600;
}

@media (min-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
    
    .hero-title {
        font-size: var(--text-6xl);
    }
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(18, 161, 22, 0.05);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ===================================
   Sections
   =================================== */
section {
    padding: var(--space-4) 0;
}

@media (min-width: 768px) {
    section {
        padding: var(--space-6) 0;
    }
}

@media (min-width: 1024px) {
    section {
        padding: var(--space-8) 0;
    }
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-3);
    color: var(--color-text);
}

.section-subtitle {
    text-align: center;
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-cta {
    text-align: center;
    margin-top: var(--space-6);
}

/* ===================================
   Features
   =================================== */
.features-preview {
    background-color: var(--color-surface);
    padding: var(--space-6) 0;
}

@media (min-width: 768px) {
    .features-preview {
        padding: var(--space-8) 0;
    }
}

@media (min-width: 1024px) {
    .features-preview {
        padding: var(--space-10) 0;
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    background-color: var(--color-bg);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    color: white;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.feature-description {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* ===================================
   How It Works
   =================================== */
.steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 900px;
    margin: 0 auto;
}

.step {
    text-align: center;
    padding: var(--space-6);
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.step-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    font-weight: 700;
    margin: 0 auto var(--space-4);
}

.step-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
}

.step-description {
    color: var(--color-text-secondary);
    margin: 0;
}

.step-arrow {
    display: none;
}

@media (min-width: 768px) {
    .steps {
        grid-template-columns: 1fr auto 1fr auto 1fr;
        align-items: center;
    }
    
    .step-arrow {
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-primary);
    }
    
    .step-arrow svg {
        width: 32px;
        height: 32px;
    }
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    padding: var(--space-6) 0;
}

@media (min-width: 768px) {
    .cta-section {
        padding: var(--space-8) 0;
    }
}

@media (min-width: 1024px) {
    .cta-section {
        padding: var(--space-8) 0;
    }
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    color: white;
    margin-bottom: var(--space-4);
}

.cta-description {
    font-size: var(--text-lg);
    margin-bottom: var(--space-6);
    opacity: 0.95;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
}

.cta-section .btn-primary {
    background-color: white;
    color: var(--color-primary);
}

.cta-section .btn-primary:hover {
    background-color: var(--color-bg-light);
    transform: translateY(-2px);
}

.cta-section .btn-secondary {
    border-color: white;
    color: white;
}

.cta-section .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: white;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-8) 0 var(--space-4);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.footer-description {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.footer-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    color: var(--color-text);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-copyright,
.footer-credits {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.heart {
    color: var(--color-error);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10%, 30% { transform: scale(1.1); }
    20%, 40% { transform: scale(1); }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-4 {
    margin-top: var(--space-4);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 767px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.75rem;
    }
    
    .hero {
        padding: var(--space-8) 0 var(--space-6);
    }
    
    section {
        padding: var(--space-6) 0;
    }
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .navbar,
    .footer,
    .btn,
    .nav-toggle,
    .theme-toggle {
        display: none;
    }
}

/* ===================================
   Beta Notice
   =================================== */
.beta-notice {
    background: linear-gradient(135deg, var(--color-warning) 0%, #ff9800 100%);
    color: #111;
    padding: var(--space-4) 0;
    position: relative;
    overflow: hidden;
}

.beta-notice::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.beta-content {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    position: relative;
    z-index: 1;
}

.beta-icon {
    flex-shrink: 0;
}

.beta-icon svg {
    width: 24px;
    height: 24px;
    color: #111;
}

.beta-text {
    flex: 1;
    font-size: var(--text-base);
    line-height: 1.6;
}

.beta-text strong {
    font-weight: 700;
}

.beta-text a {
    color: #111;
    text-decoration: underline;
    font-weight: 600;
    transition: opacity var(--transition-fast);
}

.beta-text a:hover {
    opacity: 0.8;
}

/* ===================================
   Plugin System Section
   =================================== */
.plugin-system {
    background: var(--color-surface);
}

.plugin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.plugin-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.plugin-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.plugin-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.plugin-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.plugin-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===================================
   Developer Features Section
   =================================== */
.developer-features {
    background: var(--color-bg);
}

.dev-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.dev-feature {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
}

.dev-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.dev-feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.dev-feature h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.dev-feature p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ===================================
   CTA Links
   =================================== */
.cta-links {
    margin-top: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    justify-content: center;
    font-size: var(--text-sm);
}

.cta-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: color var(--transition-fast);
}

.cta-links a:hover {
    color: var(--color-primary);
}

.cta-links span {
    color: var(--color-text-secondary);
}

/* ===================================
   Responsive Adjustments
   =================================== */
@media (max-width: 768px) {
    .beta-content {
        flex-direction: column;
        text-align: center;
    }
    
    .beta-icon {
        margin-bottom: var(--space-2);
    }
    
    .plugin-grid {
        grid-template-columns: 1fr;
    }
    
    .dev-features-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-links {
        flex-direction: column;
        gap: var(--space-2);
    }
    
    .cta-links span {
        display: none;
    }
}

/* ===================================
   Screenshot Container
   =================================== */
.screenshot-container {
    text-align: center;
    margin: var(--space-4) 0;
}

@media (min-width: 768px) {
    .screenshot-container {
        margin: var(--space-6) 0;
    }
}

.screenshot-container img {
    max-width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-base);
    object-fit: cover;
    width: 100%;
    height: auto;
}

.screenshot-container img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-2xl);
}

/* ===================================
   Download Page Styles
   =================================== */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.download-card {
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    transition: all var(--transition-base);
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.download-card.disabled {
    opacity: 0.6;
    pointer-events: none;
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.download-icon svg {
    width: 48px;
    height: 48px;
}

.download-name {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.download-version {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.download-btn {
    width: 100%;
}

.install-steps {
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-top: var(--space-6);
}

.install-step {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    margin-bottom: var(--space-4);
}

.install-step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.install-step-content h3 {
    margin-bottom: var(--space-2);
    font-size: var(--text-lg);
}

.install-step-content p {
    margin: 0;
    color: var(--color-text-secondary);
}

.system-requirements {
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-top: var(--space-6);
}

.system-requirements h3 {
    margin-bottom: var(--space-4);
}

.requirements-list {
    list-style: none;
    padding: 0;
}

.requirements-list li {
    padding: var(--space-2) 0;
    padding-left: var(--space-8);
    position: relative;
}

.requirements-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* ===================================
   Scroll Progress Bar (New Feature)
   =================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(18, 161, 22, 0.1);
    z-index: var(--z-fixed);
    pointer-events: none;
}

.scroll-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
    width: 0%;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 10px rgba(18, 161, 22, 0.5);
}

/* ===================================
   Monochrome Mode (Accessibility)
   =================================== */
[data-theme="monochrome"] {
    --color-primary: #000000;
    --color-primary-light: #333333;
    --color-primary-hover: #000000;
    --color-primary-dark: #000000;
    
    --color-bg: #ffffff;
    --color-surface: #f8f8f8;
    --color-text: #000000;
    --color-text-secondary: #666666;
    --color-border: #cccccc;
    
    --color-success: #000000;
    --color-warning: #666666;
    --color-error: #000000;
    --color-info: #666666;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 0, 0, 0.3);
}

[data-theme="monochrome"] * {
    filter: grayscale(100%) !important;
}

/* ===================================
   Version Badge
   =================================== */
.version-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.version-badge:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.version-badge-status {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--color-warning);
}

.version-badge-status.stable {
    background: var(--color-success);
}

.version-badge-status.beta {
    background: var(--color-warning);
}

.version-badge-status.alpha {
    background: var(--color-error);
}

/* ===================================
   Live Search (New Feature)
   =================================== */
.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto var(--space-6);
}

.search-input {
    width: 100%;
    padding: var(--space-4) var(--space-6) var(--space-4) var(--space-12);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    font-size: var(--text-base);
    background: var(--color-surface);
    color: var(--color-text);
    transition: all var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(18, 161, 22, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
    pointer-events: none;
}

.search-results {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-height: 400px;
    overflow-y: auto;
    display: none;
    z-index: var(--z-dropdown);
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

.search-result-item:hover {
    background-color: rgba(18, 161, 22, 0.05);
}

.search-result-title {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.search-result-excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.search-no-results {
    padding: var(--space-6);
    text-align: center;
    color: var(--color-text-secondary);
}

/* ===================================
   Theme Switcher Enhanced
   =================================== */
.theme-switcher {
    position: relative;
    display: inline-block;
}

.theme-switcher-button {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.theme-switcher-button:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.theme-switcher-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 180px;
    display: none;
    z-index: var(--z-dropdown);
}

.theme-switcher-dropdown.active {
    display: block;
}

.theme-option {
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: background-color var(--transition-fast);
    border-bottom: 1px solid var(--color-border);
}

.theme-option:last-child {
    border-bottom: none;
}

.theme-option:hover {
    background-color: rgba(18, 161, 22, 0.05);
}

.theme-option.active {
    background-color: rgba(18, 161, 22, 0.1);
    color: var(--color-primary);
    font-weight: 600;
}

.theme-option-icon {
    width: 20px;
    height: 20px;
}

/* ===================================
   Changelog Renderer Styles
   =================================== */
.changelog-entry {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    transition: all var(--transition-base);
}

.changelog-entry:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.changelog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    gap: var(--space-3);
}

.changelog-version {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
}

.changelog-date {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.changelog-changes {
    list-style: none;
    padding: 0;
}

.changelog-changes li {
    padding: var(--space-2) 0 var(--space-2) var(--space-8);
    position: relative;
    color: var(--color-text);
    line-height: 1.6;
}

.changelog-changes li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* ===================================
   Mascot Sprite Sheet System
   =================================== */
.mascot-sprite {
    width: 200px;
    height: 200px;
    background-image: url('/assets/mascot-sprite.png');
    background-repeat: no-repeat;
    background-size: 1200px 200px;
    display: inline-block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    transition: background-position var(--transition-base);
}

.mascot-default {
    background-position: 0 0;
}

.mascot-waving {
    background-position: -200px 0;
}

.mascot-winking {
    background-position: -400px 0;
}

.mascot-happy {
    background-position: -600px 0;
}

.mascot-excited {
    background-position: -800px 0;
}

.mascot-thinking {
    background-position: -1000px 0;
}

/* Hover effects for mascot */
.mascot-sprite:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 10px 20px rgba(18, 161, 22, 0.2));
}

/* ===================================
   Enhanced 120 FPS Animations
   =================================== */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translate3d(0, -30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale3d(0.9, 0.9, 1);
    }
    to {
        opacity: 1;
        transform: scale3d(1, 1, 1);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate3d(0, 0, 1, -10deg);
    }
    to {
        opacity: 1;
        transform: rotate3d(0, 0, 1, 0deg);
    }
}

/* Performance-optimized animations using GPU acceleration */
.animate-slide-up {
    animation: slideInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    will-change: transform, opacity;
}

.animate-slide-down {
    animation: slideInDown 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    will-change: transform, opacity;
}

.animate-scale {
    animation: scaleIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    will-change: transform, opacity;
}

.animate-rotate {
    animation: rotateIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    will-change: transform, opacity;
}

/* Stagger animation delays */
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

/* ===================================
   Loading States
   =================================== */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    will-change: transform;
}

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

.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-border) 25%,
        var(--color-surface) 50%,
        var(--color-border) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===================================
   Accessibility Improvements
   =================================== */
/* Skip to main content link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-to-content:focus {
    top: 0;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .mascot-sprite,
    .hero-mascot,
    .cta-mascot {
        animation: none !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --shadow-sm: none;
        --shadow-md: 0 0 0 2px currentColor;
        --shadow-lg: 0 0 0 3px currentColor;
    }
    
    .btn-primary {
        border: 2px solid currentColor;
    }
    
    .btn-secondary {
        border-width: 3px;
    }
}

/* ===================================
   Print Optimization
   =================================== */
@media print {
    .scroll-progress,
    .search-container,
    .theme-switcher,
    .version-badge {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    a {
        text-decoration: underline;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}

/* ===================================
   Focus Visible (Better Accessibility)
   =================================== */
*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* Remove default focus for mouse users */
*:focus:not(:focus-visible) {
    outline: none;
}

/* ===================================
   Utility Classes (Additional)
   =================================== */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.pointer-events-none { pointer-events: none; }
.user-select-none { user-select: none; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.w-full { width: 100%; }
.h-full { height: 100%; }
.max-w-screen-sm { max-width: 640px; }
.max-w-screen-md { max-width: 768px; }
.max-w-screen-lg { max-width: 1024px; }
.max-w-screen-xl { max-width: 1280px; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* ===================================
   Dark Mode Color Refinements
   =================================== */
[data-theme="dark"] {
    color-scheme: dark;
}

[data-theme="dark"] .beta-notice {
    background: linear-gradient(135deg, #ff9800 0%, #f57c00 100%);
}

[data-theme="dark"] .search-input {
    background: var(--color-bg-dark-alt);
}

[data-theme="dark"] .loading-spinner {
    border-color: var(--color-surface-dark);
    border-top-color: var(--color-primary-hover);
}

/* ===================================
   END OF ENHANCED STYLES
   =================================== */