:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --accent-color: #FFC94B;
    --background-color: #F4F7F9;
    --card-background: #FFFFFF;
    --text-color: #333333;
    --light-text-color: #6A6A6A;
    --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.12);
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Secondary Header Styling */
.secondary-header {
    background-color: var(--primary-color);
    color: var(--card-background);
    padding: 2rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom-left-radius: 50px;
    border-bottom-right-radius: 50px;
}

.secondary-header::before,
.secondary-header::after {
    content: '';
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.secondary-header::before {
    top: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
}

.secondary-header::after {
    bottom: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
}

.secondary-header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
}

.secondary-header p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Main Header Styling */
.main-header {
    background-color: var(--card-background);
    box-shadow: var(--shadow-light);
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex-wrap: wrap;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo span {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-links ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-links li {
    position: relative;
    margin: 5px 10px;
}

.nav-links a {
    text-decoration: none;
    color: var(--light-text-color);
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background-color 0.3s, color 0.3s;
    font-size: 0.9rem;
}

.nav-links a:hover, .nav-links .active-link {
    background-color: var(--primary-color);
    color: #FFFFFF;
}

.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-background);
    box-shadow: var(--shadow-medium);
    border-radius: 8px;
    min-width: 160px;
    z-index: 1;
    padding: 10px 0;
    top: 100%;
    left: 0;
    margin-top: 10px;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 12px 16px;
    display: block;
    text-align: left;
    transition: background-color 0.3s;
}

.dropdown-content a:hover {
    background-color: var(--background-color);
}

.dropdown:hover .dropdown-content {
    display: block;
}

.language-switcher, .mode-switcher {
    padding: 8px;
    border: 1px solid #E0E0E0;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    margin-left: 10px;
}

.main-content {
    margin-top: 60px;
    position: relative;
    z-index: 10;
}

section {
    padding: 40px 0;
}

.card {
    background-color: var(--card-background);
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
    padding: 20px;
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0;
    border-left: 5px solid var(--secondary-color);
    padding-left: 10px;
    font-weight: 600;
}

.tool-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.form-group {
    width: 100%;
    max-width: 400px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--light-text-color);
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #E0E0E0;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    background-color: var(--secondary-color);
    color: #FFFFFF;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: var(--shadow-light);
}

.btn:hover {
    background-color: #3ADBB9;
    transform: translateY(-2px);
}

/* Result Section Styling */
#result-section {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    border: 1px solid #e9ecef;
    text-align: center;
    font-weight: bold;
    min-height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.faq-item {
    margin-bottom: 15px;
    cursor: pointer;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--primary-color);
    padding: 10px;
    background-color: #F8F9FA;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #E8F0FE;
}

.faq-question h4 {
    margin: 0;
    font-size: 0.9rem;
}

.faq-question .toggle-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    padding-left: 10px;
    padding-right: 10px;
}

.faq-answer.closed {
    max-height: 0;
}

.faq-answer p {
    padding-top: 10px;
    margin: 0;
    color: var(--light-text-color);
    font-size: 0.9rem;
}

.tool-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.tool-card {
    background-color: var(--background-color);
    padding: 15px;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-color);
    box-shadow: var(--shadow-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.tool-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.tool-info h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--primary-color);
}

.tool-info p {
    margin: 3px 0 0;
    font-size: 0.8rem;
    color: var(--light-text-color);
}

footer {
    text-align: center;
    padding: 20px 0;
    background-color: var(--primary-color);
    color: #FFFFFF;
    border-top-left-radius: 30px;
    border-top-right-radius: 30px;
    font-size: 0.9rem;
}

/* Media Queries for Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .nav-links {
        display: none;
    }

    .header-container {
        justify-content: center;
    }

    .secondary-header h1 {
        font-size: 2rem;
    }

    .card {
        padding: 25px;
    }

    .tool-cards-container {
        grid-template-columns: 1fr;
    }

    #result-section {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .secondary-header {
        padding: 1rem 0;
        border-bottom-left-radius: 20px;
        border-bottom-right-radius: 20px;
    }

    .secondary-header h1 {
        font-size: 1.5rem;
    }

    .secondary-header p {
        font-size: 0.8rem;
    }

    .main-content {
        margin-top: 30px;
    }

    .card h2 {
        font-size: 1.2rem;
    }

    .form-group input, .form-group select {
        padding: 10px;
        font-size: 0.8rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    footer {
        padding: 15px 0;
        border-top-left-radius: 20px;
        border-top-right-radius: 20px;
    }
}