:root {
    --primary-white: #ffffff;
    --primary-light-green: #e8f5e9;
    --primary-green: #a8d5ba;
    --accent-green: #52b788;
    --primary-dark-green: #2d6a4f;
    --text-dark: #1b4332;
    --text-light: #555555;
    --border-light: #c7e9c0;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--primary-light-green);
    color: var(--text-dark);
    line-height: 1.6;
}

.navbar {
    background-color: var(--primary-white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark-green);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1rem;
}

.nav-links button {
    background: none;
    border: none;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s;
}

.nav-links button:hover, .nav-links button.active {
    background-color: var(--primary-green);
    color: var(--primary-dark-green);
    font-weight: 600;
}

.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.4s ease-in-out;
}

.tab-pane.active {
    display: block;
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 2.5rem;
    color: var(--primary-dark-green);
    margin-bottom: 1rem;
}

.quote {
    font-size: 1.2rem;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 3rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--primary-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid var(--border-light);
}

.card h3 {
    color: var(--accent-green);
    margin-bottom: 1rem;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    background: var(--primary-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-top: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-group label {
    font-weight: 600;
    color: var(--primary-dark-green);
}

.input-group input, .input-group select {
    padding: 0.8rem;
    border: 1px solid var(--border-light);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
}

.calc-btn {
    background-color: var(--accent-green);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 1rem;
    transition: background-color 0.3s;
}

.calc-btn:hover {
    background-color: var(--primary-dark-green);
}

.results-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.result-card {
    background: var(--primary-light-green);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-green);
}

.result-card h4 {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.result-card h2 {
    color: var(--primary-dark-green);
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    margin-top: 2rem;
}

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

@media (max-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    .nav-links {
        flex-direction: column;
        text-align: center;
    }
}
/* --- About Section Styles --- */
.about-card {
    background: var(--primary-white);
    padding: 3rem 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid var(--border-light);
    text-align: center;
    max-width: 700px;
    margin: 2rem auto;
}

.about-card h3 {
    color: var(--primary-dark-green);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.bio {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-btn {
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    color: white;
    background-color: var(--accent-green);
}

.social-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Brand-specific button colors */
.social-btn.linkedin {
    background-color: #0a66c2;
}

.social-btn.github {
    background-color: #24292e;
}

:root {
    --primary-white: #ffffff;
    --primary-light-green: #e8f5e9;
    --primary-green: #a8d5ba;
    --accent-green: #52b788;
    --primary-dark-green: #2d6a4f;
    --border-light: #c7e9c0;
}

body {
    font-family: 'Poppins', sans-serif;
}

/* Custom Color Utility Classes */
.bg-light-green { background-color: var(--primary-light-green) !important; }
.text-dark-green { color: var(--primary-dark-green) !important; }
.text-accent-green { color: var(--accent-green) !important; }
.border-light-green { border-color: var(--border-light) !important; }

/* Custom Nav Pills */
.nav-pills .nav-link {
    color: #555555;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-pills .nav-link:hover {
    color: var(--primary-dark-green);
    background-color: rgba(168, 213, 186, 0.2); 
}

.nav-pills .nav-link.active {
    background-color: var(--primary-green) !important;
    color: var(--primary-dark-green) !important;
    font-weight: 600;
}

/* Custom Inputs Focus Outline */
.form-control:focus, .form-select:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 0.25rem rgba(82, 183, 136, 0.25);
}

/* Custom Buttons & Cards */
.btn-accent {
    background-color: var(--accent-green);
    color: white;
    transition: background-color 0.2s;
}

.btn-accent:hover {
    background-color: var(--primary-dark-green);
    color: white;
}

.custom-result-card {
    background-color: var(--primary-light-green);
    border-left: 4px solid var(--accent-green);
}

.brand-linkedin {
    background-color: #0a66c2;
    transition: opacity 0.2s;
}

.brand-github {
    background-color: #24292e;
    transition: opacity 0.2s;
}

.brand-linkedin:hover, .brand-github:hover {
    opacity: 0.9;
    color: white;
}