/* Mystreva Design System */
:root {
    /* Backgrounds */
    --bg-primary: #0B0B0B;
    --bg-secondary: #121212;
    --bg-section: #161616;
    --bg-card: #1A1A1A;

    /* Brand Accents */
    --accent-primary: #8B0000;
    --accent-secondary: #FF2E2E;
    --accent-glow: rgba(255, 46, 46, 0.25);
    
    /* Text Colors */
    --txt-primary: #FFFFFF;
    --txt-secondary: #B3B3B3;
    --txt-muted: #7A7A7A;
    
    /* UI Borders */
    --border-subtle: #1F1F1F;
    --border-divider: #242424;
    
    /* Shadows */
    --shadow-card: rgba(0, 0, 0, 0.4);
    --hover-glow: rgba(255, 46, 46, 0.2);

    /* Typography */
    --font-heading: 'Bebas Neue', sans-serif;
    --font-body: 'Inter', Helvetica, sans-serif;

    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-xxl: 8rem;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    /* Hide scrollbar for cleaner look */
}

body {
    background-color: var(--bg-primary);
    color: var(--txt-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Typography Classes */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    letter-spacing: 1px;
    line-height: 1.1;
    text-transform: uppercase;
}

.text-accent { color: var(--accent-secondary); }
.text-muted { color: var(--txt-muted); }

/* Layout & Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--space-xl) 0;
    position: relative;
    z-index: 10;
}

.section-title {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    text-align: center;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--txt-secondary);
    text-align: center;
    margin-bottom: var(--space-xl);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
    font-family: var(--font-body);
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 0 20px rgba(139, 0, 0, 0.4);
    padding: 0.75rem 1.5rem;
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--txt-primary);
    border: 1px solid var(--border-subtle);
    padding: 0.75rem 1.5rem;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    background: rgba(11, 11, 11, 0.75);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.logo-link {
    display: inline-flex;
    align-items: center;
}

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

.nav-links a {
    color: var(--txt-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

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

.mobile-menu-btn {
    background: none;
    border: none;
    color: var(--txt-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.desktop-only {
    display: none; /* Mobile first */
}

.mobile-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 1.5rem;
    display: none;
    flex-direction: column;
    gap: 1rem;
}

.mobile-menu.active {
    display: flex;
}

.mobile-link {
    font-size: 1.2rem;
    color: var(--txt-secondary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-subtle);
}

.mobile-link:hover { color: var(--txt-primary); }

.mobile-btn {
    margin-top: 1rem;
    width: 100%;
}

/* Desktop Navigation overrides */
@media (min-width: 768px) {
    .desktop-only { display: flex; }
    .mobile-menu-btn { display: none; }
    .mobile-menu { display: none !important; }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xxl) 1.5rem 6rem;
    overflow: hidden;
}

.glow-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at center, rgba(255,46,46,0.15), transparent 60%);
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(255, 46, 46, 0.1);
    color: var(--accent-secondary);
    border: 1px solid rgba(255, 46, 46, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: var(--space-md);
    line-height: 0.95;
}

.hero-subtext {
    font-size: 1.1rem;
    color: var(--txt-secondary);
    margin-bottom: var(--space-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-title { font-size: 8rem; }
    .hero-subtext { font-size: 1.3rem; }
    .hero-actions {
        flex-direction: row;
        justify-content: center;
    }
}

/* Hero Enhancements */
.hero-trust {
    margin-top: var(--space-lg);
    color: var(--txt-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.trust-platforms {
    margin-top: 0.5rem;
    color: var(--txt-secondary);
    font-weight: 500;
}

.scroll-indicator {
    margin-top: var(--space-xl);
    color: var(--txt-muted);
    animation: fadeBounce 2.5s infinite;
    display: flex;
    justify-content: center;
    opacity: 0.6;
}

@keyframes fadeBounce {
    0%, 100% {
        transform: translateY(0);
        opacity: 0.3;
    }
    50% {
        transform: translateY(10px);
        opacity: 0.8;
    }
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .grid { grid-template-columns: repeat(2, 1fr); }
    .problem-grid { grid-template-columns: repeat(2, 1fr); }
    .solution-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--border-subtle);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card {
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--shadow-card);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--accent-secondary);
}

.card h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: none;
    letter-spacing: normal;
}

.card p {
    color: var(--txt-secondary);
    font-size: 0.95rem;
}

/* Intersection Observer Animations Base */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Advanced Vercel-like Glow Cards */
.border-card {
    background: var(--bg-card);
    overflow: hidden;
}

.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0;
    height: 0;
    background: radial-gradient(circle, var(--hover-glow) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 1;
}

.border-card:hover .card-glow {
    opacity: 1;
}

.border-card .card-content {
    position: relative;
    z-index: 2;
}

.highlight-text {
    color: var(--accent-secondary) !important;
    font-size: 0.9rem !important;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem !important;
}

/* Problem Section */
.problem-section {
    background-color: var(--bg-section);
}

@media (min-width: 1024px) {
    .section-title { font-size: 4rem; }
}

/* Platforms Section */
.platforms-section {
    position: relative;
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-divider);
    border-bottom: 1px solid var(--border-divider);
    overflow: hidden;
}

.platforms-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(139,0,0,0.1), transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.platforms-desc {
    font-size: 1.15rem;
    color: var(--txt-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.platforms-cards-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.platform-card h3 {
    margin-bottom: 0.5rem;
    color: var(--txt-primary);
}

.platform-card p {
    font-size: 0.95rem;
    color: var(--txt-secondary);
    margin: 0;
    line-height: 1.4;
}

@media (min-width: 768px) {
    .platforms-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .platforms-cards-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
    }
}

/* How It Works Section */
.how-it-works-section {
    background-color: var(--bg-primary);
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.timeline-step {
    padding: 2rem;
    border-left: 2px solid var(--border-subtle);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.timeline-step:hover {
    border-left-color: var(--accent-secondary);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--txt-muted);
    opacity: 0.5;
    line-height: 1;
    margin-bottom: 1rem;
}

.step-content h3 {
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 0;
    color: var(--txt-primary);
}

@media (min-width: 768px) {
    .timeline {
        flex-direction: row;
        gap: 0;
    }
    
    .timeline-step {
        flex: 1;
        border-left: none;
        border-top: 2px solid var(--border-subtle);
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        padding: 3rem 2rem;
    }

    .timeline-step:hover {
        border-top-color: var(--accent-secondary);
        border-left-color: transparent;
    }
}

/* CTA Section */
.cta-section {
    position: relative;
    padding: var(--space-xxl) 0;
    overflow: hidden;
    text-align: center;
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle at center, rgba(139,0,0,0.3), transparent 70%);
    z-index: 1;
    pointer-events: none;
}

.cta-container {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: 3.5rem;
    margin-bottom: var(--space-md);
}

.cta-subtitle {
    font-size: 1.2rem;
    color: var(--txt-secondary);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .cta-title { font-size: 5rem; }
}

/* Footer */
.footer {
    background-color: var(--bg-section);
    border-top: 1px solid var(--border-divider);
    padding: var(--space-xl) 0 2rem;
    font-size: 0.95rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 2rem;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-brand .logo-link {
    margin-bottom: 1.5rem;
}

.footer-tagline {
    color: var(--txt-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.footer-description {
    font-size: 0.9rem;
    line-height: 1.5;
    max-width: 280px;
}

.footer-heading {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--txt-primary);
    margin-bottom: 1.5rem;
    letter-spacing: normal;
    text-transform: none;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: var(--txt-secondary);
    transition: color 0.2s ease;
}

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

.footer-social {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.5rem;
    justify-content: center; /* Center on mobile */
}

.footer-social a {
    color: var(--txt-muted);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.footer-social a:hover {
    color: var(--accent-secondary);
    border-color: var(--accent-secondary);
    background: rgba(255, 46, 46, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(255, 46, 46, 0.15);
}

@media (min-width: 768px) {
    .footer-social {
        justify-content: flex-start; /* Left align on desktop */
    }
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-divider);
    color: var(--txt-muted);
    font-size: 0.85rem;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-legal a {
    transition: color 0.2s ease;
}

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

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* About Section */
.about-section {
    padding: var(--space-xl) 0;
    position: relative;
}

.about-content {
    max-width: 800px;
    margin: 0 auto var(--space-lg);
    text-align: center;
}

.about-description {
    font-size: 1.15rem;
    color: var(--txt-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.about-mission {
    font-size: 1.25rem;
    color: var(--txt-primary);
    margin-top: 2rem;
    font-family: var(--font-body);
}

.about-features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: var(--space-xl);
}

@media (min-width: 768px) {
    .about-features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

/* Flagship OS Section */
.flagship-section {
    position: relative;
    padding: var(--space-xl) 0 var(--space-md);
}

.flagship-card {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: rgba(26, 26, 26, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
    text-align: center;
    box-shadow: 0 15px 50px rgba(0,0,0,0.6);
}

.os-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top, rgba(139,0,0,0.2), transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.flagship-content {
    position: relative;
    z-index: 2;
}

.flagship-title {
    font-size: 2.5rem;
    color: var(--txt-primary);
    margin: var(--space-md) 0;
    text-transform: none;
    font-family: var(--font-body);
    font-weight: 700;
}

.flagship-description {
    font-size: 1.2rem;
    color: var(--txt-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.flagship-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: var(--space-xl);
}

.flagship-features li {
    font-size: 0.95rem;
    color: var(--txt-secondary);
    background: rgba(255,255,255,0.05);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
}

.flagship-features li span {
    color: var(--accent-secondary);
    margin-right: 0.5rem;
}

.flagship-btn {
    box-shadow: 0 0 30px rgba(139,0,0,0.5);
}

@media (min-width: 768px) {
    .flagship-card { padding: var(--space-xxl) var(--space-xl); }
    .flagship-title { font-size: 3.5rem; }
}

/* Creator Tools */
.tools-grid { grid-template-columns: 1fr; }
@media (min-width: 768px) {
    .tools-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Manifesto Section */
.manifesto-section {
    padding: var(--space-xl) 0 0;
}

.manifesto-card {
    text-align: center;
    padding: var(--space-xxl) var(--space-lg);
    border: 1px solid var(--accent-primary);
    box-shadow: 0 0 50px rgba(139, 0, 0, 0.15);
    border-radius: var(--radius-lg);
    max-width: 900px;
    margin: 0 auto;
}

.manifesto-title {
    color: var(--accent-secondary);
    margin-bottom: var(--space-md);
    font-size: 2.5rem;
}

.manifesto-text {
    font-size: 1.5rem;
    font-family: var(--font-heading);
    letter-spacing: 1px;
    margin-bottom: 1rem;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .manifesto-title { font-size: 4rem; }
    .manifesto-text { font-size: 2.5rem; }
}

/* Application Form */
.application-form {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-lg);
    text-align: left;
    border-radius: var(--radius-md);
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--txt-secondary);
    font-size: 0.95rem;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-subtle);
    color: var(--txt-primary);
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 10px rgba(255, 46, 46, 0.2);
    background: rgba(0, 0, 0, 0.6);
}

.form-group select option {
    background: var(--bg-card);
    color: var(--txt-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit-btn {
    width: 100%;
    margin-top: 1rem;
}

/* Careers Specific Styles */
.criteria-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.criteria-list li {
    font-size: 1.15rem;
    color: var(--txt-secondary);
    display: flex;
    align-items: center;
}

.criteria-list li span {
    color: var(--accent-secondary);
    margin-right: 1rem;
    font-size: 1.3rem;
}

@media (min-width: 768px) {
    .application-form {
        padding: var(--space-xl);
    }
}