:root {
    --bg-main: #020813;
    --bg-card: rgba(13, 30, 60, 0.4);
    --bg-card-hover: rgba(20, 45, 80, 0.6);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-blue: #1d72f2;
    --accent-blue-hover: #1557c0;
    --accent-cyan: #38bdf8;
    --border-color: rgba(56, 189, 248, 0.15);
    
    /* Tier Colors based on images */
    --color-starter: #22c55e;
    --color-basic: #3b82f6;
    --color-performance: #a855f7;
    --color-pro: #ef4444;
    
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
    box-shadow: 0 0 15px rgba(29, 114, 242, 0.4);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-outline:hover {
    border-color: white;
    background-color: rgba(255, 255, 255, 0.05);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.2rem 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background-color: rgba(2, 8, 19, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-icon {
    position: relative;
    color: var(--accent-blue);
    font-size: 2.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon .inner-k {
    position: absolute;
    color: var(--bg-main);
    font-size: 1rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.logo-text .kynox {
    font-weight: 800;
    color: var(--accent-blue);
}

.logo-text .heberg {
    font-weight: 500;
    font-size: 0.9rem;
}

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

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
}

.nav-links a:hover, .nav-links a.active {
    color: white;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    line-height: 1.2;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    padding: 8rem 0 4rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-bg-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle at 50% 50%, rgba(29, 114, 242, 0.15) 0%, transparent 60%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.text-gradient {
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 450px;
}

.hero-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-icon {
    font-size: 1.5rem;
    color: var(--accent-cyan);
}

.feature-text {
    display: flex;
    flex-direction: column;
}

.feature-text strong {
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.feature-text span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.3d-logo-mockup {
    position: relative;
    width: 100%;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    perspective: 1000px;
}

.glowing-k {
    font-size: 15rem;
    color: #123c8a;
    position: relative;
    text-shadow: 0 0 40px rgba(29, 114, 242, 0.6), 
                 inset 0 0 20px rgba(56, 189, 248, 0.8);
    transform-style: preserve-3d;
    transform: rotateY(-10deg) rotateX(10deg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.inner-k-large {
    position: absolute;
    font-size: 7rem;
    color: var(--bg-main);
    opacity: 0.8;
}

.pedestal {
    width: 300px;
    height: 30px;
    background: radial-gradient(ellipse at top, rgba(29, 114, 242, 0.3), transparent 70%);
    border-radius: 50%;
    position: absolute;
    bottom: 20px;
    transform: rotateX(70deg);
    box-shadow: 0 20px 50px rgba(56, 189, 248, 0.4);
}

.ambient-glow {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(29, 114, 242, 0.2) 0%, transparent 60%);
    z-index: -1;
}

/* ==========================================================================
   Stats Bar
   ========================================================================== */
.stats-bar-section {
    padding: 2rem 0;
    margin-top: -2rem;
}

.stats-grid {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    justify-content: space-between;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    padding: 0 1rem;
}

.stat-icon {
    font-size: 2rem;
    color: var(--accent-blue);
    background: rgba(29, 114, 242, 0.1);
    padding: 0.8rem;
    border-radius: 50%;
}

.stat-content strong {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
}

.stat-content p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

.stat-divider {
    width: 1px;
    background-color: var(--border-color);
}

/* ==========================================================================
   Offers Section & Tabs
   ========================================================================== */
.offers-section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn i {
    font-size: 1.2rem;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.tab-btn.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: 0 0 15px rgba(29, 114, 242, 0.4);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-header {
    text-align: center;
    margin-bottom: 3rem;
}

.tab-header h3 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    text-transform: uppercase;
    font-style: italic;
    letter-spacing: 1px;
}

.tab-header .text-highlight {
    background: linear-gradient(90deg, #c084fc, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tab-header p {
    color: var(--text-secondary);
    letter-spacing: 2px;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

/* ==========================================================================
   Pricing Cards
   ========================================================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.pricing-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.pricing-card:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-flex;
}

.pricing-card h4 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.2rem;
}

.card-subtitle {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    display: inline-block;
    color: white;
}

.card-features {
    margin-bottom: 2rem;
    flex-grow: 1;
}

.card-features li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: #e2e8f0;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-features li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.card-features i {
    font-size: 1.2rem;
}

.card-price {
    text-align: center;
    margin-top: auto;
}

.card-price .price-amount {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.card-price .price-suffix {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 0.5rem;
}

/* Tier Specific Colors */
/* STARTER */
.card-starter {
    border-color: rgba(34, 197, 94, 0.3);
    box-shadow: inset 0 0 20px rgba(34, 197, 94, 0.05);
}
.card-starter:hover {
    border-color: var(--color-starter);
    box-shadow: 0 10px 30px rgba(34, 197, 94, 0.15), inset 0 0 20px rgba(34, 197, 94, 0.1);
}
.card-starter .card-icon { color: var(--color-starter); }
.card-starter h4 { color: var(--color-starter); }
.card-starter .card-subtitle { background: rgba(34, 197, 94, 0.2); border: 1px solid var(--color-starter); }
.card-starter .card-features i { color: var(--color-starter); }
.card-starter .price-amount { color: var(--color-starter); }

/* BASIC */
.card-basic {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: inset 0 0 20px rgba(59, 130, 246, 0.05);
}
.card-basic:hover {
    border-color: var(--color-basic);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15), inset 0 0 20px rgba(59, 130, 246, 0.1);
}
.card-basic .card-icon { color: var(--color-basic); }
.card-basic h4 { color: var(--color-basic); }
.card-basic .card-subtitle { background: rgba(59, 130, 246, 0.2); border: 1px solid var(--color-basic); }
.card-basic .card-features i { color: var(--color-basic); }
.card-basic .price-amount { color: var(--color-basic); }

/* PERFORMANCE */
.card-performance {
    border-color: rgba(168, 85, 247, 0.5);
    box-shadow: inset 0 0 30px rgba(168, 85, 247, 0.1);
    transform: scale(1.02);
    z-index: 2;
}
.card-performance:hover {
    border-color: var(--color-performance);
    box-shadow: 0 15px 40px rgba(168, 85, 247, 0.25), inset 0 0 30px rgba(168, 85, 247, 0.15);
    transform: scale(1.04);
}
.card-performance .card-icon { color: var(--color-performance); }
.card-performance h4 { color: var(--color-performance); }
.card-performance .card-subtitle { background: rgba(168, 85, 247, 0.2); border: 1px solid var(--color-performance); }
.card-performance .card-features i { color: var(--color-performance); }
.card-performance .price-amount { color: var(--color-performance); }

/* PRO */
.card-pro {
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: inset 0 0 20px rgba(239, 68, 68, 0.05);
}
.card-pro:hover {
    border-color: var(--color-pro);
    box-shadow: 0 10px 30px rgba(239, 68, 68, 0.15), inset 0 0 20px rgba(239, 68, 68, 0.1);
}
.card-pro .card-icon { color: var(--color-pro); }
.card-pro h4 { color: var(--color-pro); }
.card-pro .card-subtitle { background: rgba(239, 68, 68, 0.2); border: 1px solid var(--color-pro); }
.card-pro .card-features i { color: var(--color-pro); }
.card-pro .price-amount { color: var(--color-pro); }

.recommended-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-performance);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    box-shadow: 0 4px 10px rgba(168, 85, 247, 0.4);
    white-space: nowrap;
}

/* ==========================================================================
   Bottom CTA Section
   ========================================================================== */
.bottom-cta {
    padding: 0 0 6rem;
}

.cta-card {
    background: linear-gradient(135deg, rgba(13, 30, 60, 0.6) 0%, rgba(2, 8, 19, 0.8) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cta-content {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.cta-icon {
    font-size: 3.5rem;
    color: var(--accent-blue);
    background: rgba(29, 114, 242, 0.1);
    padding: 1rem;
    border-radius: 50%;
}

.cta-text h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.cta-text p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .card-performance {
        transform: scale(1);
    }
    
    .card-performance:hover {
        transform: scale(1.02) translateY(-8px);
    }
}

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-desc {
        margin: 0 auto 2rem;
    }

    .hero-features {
        max-width: 600px;
        margin: 0 auto 2.5rem;
        text-align: left;
    }

    .hero-actions {
        justify-content: center;
    }

    .stats-grid {
        flex-wrap: wrap;
        gap: 2rem;
    }

    .stat-divider {
        display: none;
    }

    .stat-card {
        min-width: calc(50% - 1rem);
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-actions {
        display: none;
    }

    .nav-links.active, .nav-actions.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(2, 8, 19, 0.95);
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
    }

    .mobile-toggle {
        display: block;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .stat-card {
        min-width: 100%;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .category-tabs {
        flex-direction: column;
    }

    .cta-card {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .cta-content {
        flex-direction: column;
        gap: 1rem;
    }
}