:root {
    --primary-blue: #007bff;
    --success-green: #198754;
    --info-turquoise: #0dcaf0;
    --dark-text: #212529;
    --light-bg: #f8f9fa;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-blue) !important;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    color: var(--dark-text);
    margin-left: 1rem;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-blue);
}

/* Hero Section */
.hero-section {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, #fff 0%, #eef6ff 100%);
    position: relative;
}

.hero-title {
    font-weight: 800;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-text);
    overflow-wrap: break-word;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #6c757d;
    margin-bottom: 2.5rem;
    max-width: 700px;
}

.btn-hero {
    padding: 0.8rem 2.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

.hero-credits {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: #adb5bd;
}

/* MVP Block */
.mvp-section {
    background-color: var(--light-bg);
    padding: 80px 0;
    border-top: 1px solid #dee2e6;
    border-bottom: 1px solid #dee2e6;
}

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

.section-title {
    font-weight: 700;
    margin-bottom: 1rem;
}

/* Cards */
.exercise-card {
    border: none;
    border-radius: 20px;
    padding: 2rem;
    height: 100%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
}

.exercise-card:hover:not(.locked) {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.exercise-card.locked {
    background-color: #f1f3f5;
    opacity: 0.8;
    filter: grayscale(1);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.card-title {
    font-weight: 700;
    margin-bottom: 1rem;
}

.btn-start {
    margin-top: auto;
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    font-weight: 600;
}

.lock-badge {
    background: #dee2e6;
    color: #6c757d;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* Testing Program */
.testing-section {
    padding: 80px 0;
}

.highlight-box {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    padding: 3rem;
    border-radius: 30px;
    box-shadow: 0 20px 50px rgba(0, 123, 255, 0.2);
}

.benefit-award {
    border: 2px dashed rgba(255, 255, 255, 0.4);
    padding: 1.5rem;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

/* Form */
.form-section {
    padding: 80px 0;
    background: #fff;
}

.form-control {
    border-radius: 10px;
    padding: 0.8rem 1rem;
    border: 1px solid #dee2e6;
}

.form-control:focus {
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.1);
    border-color: var(--primary-blue);
}

/* Utility */
.text-blue {
    color: var(--primary-blue);
}

.text-green {
    color: var(--success-green);
}

.text-turquoise {
    color: var(--info-turquoise);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .highlight-box {
        padding: 2rem;
    }
}

/* Team Section */
.team-card {
    background: #fff;
    border-radius: 20px;
    border: 1px solid rgba(0, 0, 0, 0.03);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
}

.team-img-placeholder {
    width: 80px;
    height: 80px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #dee2e6;
    border: 2px solid #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.bg-primary-soft {
    background: rgba(0, 123, 255, 0.1);
}

.bg-success-soft {
    background: rgba(25, 135, 84, 0.1);
}

.quote-plate {
    background: linear-gradient(to right, #f8f9fa, #fff);
    border-radius: 20px;
    border-left: 5px solid var(--primary-blue);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

/* Modal Styling */
.modal-content {
    border-radius: 20px;
    overflow: hidden;
}

.terms-content section p {
    font-size: 0.95rem;
    color: #495057;
}

.modal-header .btn-close {
    background-color: #f8f9fa;
    opacity: 1;
    padding: 0.8rem;
    border-radius: 50%;
    font-size: 0.75rem;
}

.modal-footer .btn {
    font-weight: 600;
}