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

body {
    padding-top: 120px;
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    position: relative;
}

body.menu-open {
    /* overflow: hidden; */
    position: relative;
}

.wave-background {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0.7;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.wave {
    position: absolute;
    width: 200%;
    height: 100%;
    bottom: -50%;
    left: -50%;
    border-radius: 40%;
    background: linear-gradient(
        45deg,
        rgba(50, 201, 151, 0.5),
        var(--wave-green-mint)
    );
    animation: wave 100s infinite linear;
}

.wave:nth-child(2) {
    background: linear-gradient(
        135deg,
        var(--wave-green-emerald),  
        var(--wave-green-sage)  
    );
    opacity: 0.5;
    animation: wave 65s infinite linear;
    animation-delay: -5s;
}

.wave:nth-child(3) {
    background: linear-gradient(
        225deg,
        var(--wave-green-medium), 
        var(--wave-green-lime) 
    );
    opacity: 0.4;
    animation: wave 210s infinite linear;
    animation-delay: -2s;
}

.wave:nth-child(4) {
    background: linear-gradient(
        315deg,
        var(--wave-green-forest),
        var(--wave-green-light)  
    );
    width: 250%;
    height: 250%;
    bottom: -70%;
    left: -70%;
    opacity: 0.3;
    animation: wave 180s infinite linear;
    animation-delay: -15s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.btn {
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border: 2px solid var(--primary-dark);

}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: var(--background-light);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 2px solid var(--background-light);;
}

.btn-documentation {
    background: var(--primary-light);
    color: white;
    text-decoration: none;
    border: 2px solid var(--primary-light);
}

.btn-documentation:hover {
    background: var(--background-light);
    color: var(--primary-light);
    border: 2px solid var(--background-light);;
}

.btn-login {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    margin-right: 10px;
    text-decoration: none;
    padding: 10px 20px;
}

.btn-login:hover {
    background: rgba(var(--primary-color), 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-large {
    padding: 15px 40px;
    font-size: 18px;
}

.problems-grid, .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
    color: var(--primary-dark);
}

.problem-card, .feature-card {
    background: var(--background-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.cta {
    background: linear-gradient(145deg, var(--primary-light), var(--primary-dark));
    color: var(--white);
    text-align: center;
}

@keyframes gradient-rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes wave {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Mobile feature grids */
@media (max-width: 768px) {
    .problems-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    section {
        padding: 40px 0;
    }

    section h2 {
        font-size: 28px;
        padding: 0 1rem;
    }

    .problem-card,
    .feature-card {
        margin: 0 1rem;
    }

    .faq-grid {
        margin: 0 1rem;
    }
}