/* Header Styles */
:root {
    --primary-color: #2C3E50;
    --secondary-color: #8CC73E;
    --accent-color: #3498DB;
    --text-color: #2C3E50;
    --light-bg: #F8F9FA;
    --dark-bg: #1A252F;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-bg) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, #3BB2E6 100%);
    --box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Base Styles */
body {
    font-family: "SF Pro Text", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "SF Pro Text", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 600;
}

/* Navbar Styles */
.navbar {
    background: white;
    padding: 15px 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand img {
    height: 45px;
    transition: var(--transition);
}

.navbar-brand img:hover {
    transform: scale(1.05);
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 16px;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-secondary);
    transition: var(--transition);
    transform: translateX(-50%);
}

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

.nav-link:hover::after {
    width: 80%;
}

.nav-link.active {
    color: var(--secondary-color);
}

.nav-link.active::after {
    width: 80%;
}

/* Button Styles */
.btn-primary {
    background: var(--gradient-secondary);
    border: none;
    padding: 10px 25px;
    border-radius: 30px;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(231, 76, 60, 0.4);
}

/* Responsive Styles */
@media (max-width: 991.98px) {
    .navbar {
        padding: 10px 0;
    }

    .navbar-brand img {
        height: 36px;
    }

    .navbar-collapse {
        background: white;
        padding: 20px;
        border-radius: 15px;
        box-shadow: var(--box-shadow);
        margin-top: 15px;
        animation: slideDown 0.3s ease;
    }

    .nav-link {
        text-align: center;
        padding: 15px 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        font-size: 1.1rem;
        font-weight: 500;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .nav-link::after {
        display: none;
    }

    .navbar-toggler {
        border: none;
        padding: 8px 12px;
        background: rgba(0, 0, 0, 0.05);
        border-radius: 8px;
        transition: all 0.3s ease;
    }

    .navbar-toggler:focus {
        box-shadow: none;
        background: rgba(0, 0, 0, 0.1);
    }

    .navbar-toggler:hover {
        background: rgba(0, 0, 0, 0.1);
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 37, 41, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
}

@media (max-width: 576px) {
    .navbar {
        padding: 8px 0;
    }

    .navbar-brand img {
        height: 32px;
    }

    .navbar-collapse {
        padding: 15px;
        margin-top: 10px;
        border-radius: 12px;
    }

    .nav-link {
        padding: 12px 0;
        font-size: 1rem;
    }

    .navbar-toggler {
        padding: 6px 10px;
        font-size: 1rem;
    }
}

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

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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