:root {
    --primary-color: #002f6c;
    --primary-dark: #001f4d;
    --primary-light: #004080;
    --accent-color: #0066cc;
    --success-color: #27ae60;
    --b2b-color: #3498db;
    --b2c-color: #9b59b6;
    --d2c-color: #e74c3c;
    --text-dark: #1a1a1a;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 47, 108, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 47, 108, 0.15);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

.loader {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

#loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

/* Scroll to Top Button */
#scrollToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    z-index: 1000;
}

#scrollToTop:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 47, 108, 0.25);
}

#scrollToTop.show {
    display: flex;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 30px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-section .lead {
    font-size: 1.4rem;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons .btn {
    margin: 10px;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-primary-custom {
    background: white;
    color: var(--primary-color);
    border: 2px solid white;
}

.btn-primary-custom:hover {
    background: transparent;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline-custom {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline-custom:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* Stats Section */
.stats-section {
    background: var(--primary-dark);
    color: white;
    padding: 60px 0;
}

.stat-card {
    text-align: center;
    padding: 30px 20px;
}

.stat-card h3 {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 10px;
}

.stat-card p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin: 0;
}

/* Content Sections */
.content-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
}

/* Feature Cards */
.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
    border-top: 4px solid var(--primary-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 25px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

/* Sales Model Cards */
.model-card {
    background: white;
    padding: 50px 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
    border-left: 5px solid var(--primary-color);
}

.model-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.model-card.b2b {
    border-left-color: var(--b2b-color);
}

.model-card.b2c {
    border-left-color: var(--b2c-color);
}

.model-card.d2c {
    border-left-color: var(--d2c-color);
}

.model-badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.model-badge.b2b {
    background: rgba(52, 152, 219, 0.1);
    color: var(--b2b-color);
}

.model-badge.b2c {
    background: rgba(155, 89, 182, 0.1);
    color: var(--b2c-color);
}

.model-badge.d2c {
    background: rgba(231, 76, 60, 0.1);
    color: var(--d2c-color);
}

.model-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.model-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

.model-features {
    list-style: none;
    padding: 0;
    margin-top: 25px;
}

.model-features li {
    position: relative;
    margin-bottom: 12px;
    color: var(--text-light);
}



/* Similarity Cards */
.similarity-card {
    background: white;
    padding: 35px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.similarity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.similarity-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.similarity-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Success Stories */
.success-card {
    background: white;
    padding: 40px 35px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
    border-top: 5px solid var(--success-color);
}

.success-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.success-card h4 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.success-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.success-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
}

.results-highlight {
    background: rgba(39, 174, 96, 0.1);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.results-highlight strong {
    color: var(--success-color);
}

/* Content Block */
.content-block {
    padding: 40px;
}

.content-block p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

/* CTA Section */
.cta-section {
    background: var(--primary-dark);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 25px;
}

.cta-section p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Background Utilities */
.bg-light-custom {
    background: var(--bg-light);
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }

    .hero-section .lead {
        font-size: 1.2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0 60px;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section .lead {
        font-size: 1.1rem;
    }

    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin: 10px 0;
    }

    .content-section {
        padding: 60px 0;
    }

    .stat-card h3 {
        font-size: 2.5rem;
    }

    #scrollToTop {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}