:root {
    --primary-bg: #ffffff;
    --secondary-bg: #f8fafc;
    --accent: #0d9488; /* Darker Teal for readability on light */
    --accent-light: #ccfbf1;
    --cta: #f59e0b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.05);
    --card-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.05);
    --transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

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

/* Navigation */
header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
    transition: 0.3s;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img { height: 40px; }

.nav-links { display: flex; gap: 2.5rem; list-style: none; align-items: center; }
.nav-links a { 
    text-decoration: none; 
    color: var(--text-secondary); 
    font-weight: 600; 
    font-size: 0.9rem;
    transition: 0.3s;
}
.nav-links a:hover { color: var(--accent); }

/* Hero */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    background: radial-gradient(circle at 70% 30%, var(--accent-light) 0%, transparent 50%);
}

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

.hero-content h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.cta-group { display: flex; gap: 1rem; }

.btn {
    padding: 1rem 2.5rem;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 10px 25px -5px rgba(13, 148, 136, 0.3);
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 15px 30px -5px rgba(13, 148, 136, 0.4); }

.btn-secondary {
    background: #f1f5f9;
    color: var(--text-primary);
}

.btn-secondary:hover { background: #e2e8f0; }

/* Comparison */
.comparison-section { padding: 8rem 0; background: var(--secondary-bg); }
.comp-table {
    width: 100%;
    background: white;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    border-collapse: collapse;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    margin-top: 3rem;
}

.comp-table th, .comp-table td {
    padding: 1.8rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.comp-table th { background: #f8fafc; color: var(--text-secondary); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; }
.comp-table .highlight { background: #f0fdfa; color: var(--accent); font-weight: 700; }

/* Bundles */
.bundle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.bundle-card {
    background: white;
    border: 1px solid var(--glass-border);
    padding: 3rem 2rem;
    border-radius: 32px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
}

.bundle-card.popular {
    border: 2px solid var(--accent);
    transform: scale(1.05);
    position: relative;
}

.bundle-card:hover { transform: translateY(-10px); }

.price { font-size: 3rem; font-weight: 800; color: var(--text-primary); margin: 1.5rem 0; }
.price span { font-size: 1.1rem; color: #94a3b8; text-decoration: line-through; margin-right: 8px; font-weight: 400; }

/* Features */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 4rem 0;
}

.feature-item {
    padding: 2.5rem;
    background: white;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.feature-item i { font-size: 2rem; color: var(--accent); margin-bottom: 1.5rem; }

/* FAQ */
.faq-container { max-width: 800px; margin: 3rem auto; }
.faq-item {
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    margin-bottom: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
}

.faq-header { padding: 1.5rem 2rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 700; }
.faq-content { max-height: 0; overflow: hidden; transition: 0.3s ease-out; }
.faq-content p { padding: 0 2rem 2rem; color: var(--text-secondary); font-size: 0.95rem; }

/* Footer */
footer { background: #0f172a; color: white; padding: 6rem 0 3rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 4rem; margin-bottom: 4rem; }
footer a { color: #94a3b8; text-decoration: none; display: block; margin-bottom: 0.8rem; font-size: 0.9rem; }
footer a:hover { color: white; }

/* Header & Branding */
.nav-brand {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-brand span { color: var(--accent); }

/* Sections */
section { padding: 10rem 0; }
.section-tag {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    padding: 0.5rem 1.2rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 800;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title h2 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    font-weight: 800;
}

/* Audience Grid */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 4rem;
}

.audience-card {
    background: #f8fafc;
    padding: 3.5rem;
    border-radius: 32px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.audience-card:hover { 
    background: white; 
    box-shadow: var(--card-shadow); 
    border-color: var(--glass-border); 
    transform: translateY(-10px);
}

.audience-card i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 2rem;
}

/* Steps / Guide */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5rem;
    position: relative;
}

.step-item { position: relative; }
.step-number {
    font-size: 4rem;
    font-weight: 900;
    color: rgba(13, 148, 136, 0.1);
    position: absolute;
    top: -20px;
    left: -20px;
}

/* Review Cards */
.review-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.review-card {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    border: 1px solid var(--glass-border);
}

.stars { color: #f59e0b; margin-bottom: 1.5rem; }

/* Interpretation Guide */
.info-box {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
}

.info-item {
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

.info-item.green { border-left: 5px solid #10b981; background: #f0fdf4; }
.info-item.yellow { border-left: 5px solid #f59e0b; background: #fffbeb; }
.info-item.red { border-left: 5px solid #ef4444; background: #fef2f2; }

/* Animation Keyframes */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(-15px) rotate(1deg); }
}

@keyframes pulse-glow {
    0% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(13, 148, 136, 0); }
    100% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0); }
}

/* Staggered Delay Utilities */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* Enhanced Hero Interaction */
.hero-image img {
    animation: float 6s ease-in-out infinite;
}

/* Specific Component Transitions */
.bundle-card, .audience-card, .feature-item, .step-item {
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), 
                box-shadow 0.6s ease, 
                border-color 0.6s ease, 
                background 0.6s ease;
}

.bundle-card:hover, .audience-card:hover {
    transform: translateY(-12px) scale(1.02) !important;
}

/* Header Scroll State */
header.scrolled {
    padding: 0.5rem 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* Button Micro-interactions */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255,255,255,0.1);
    transform: rotate(45deg);
    transition: 0.6s;
    opacity: 0;
}

.btn-primary:hover::after {
    left: 120%;
    opacity: 1;
}

header.scrolled {
    height: 70px;
}