:root {
    --primary-color: #319795;
    --primary-light: #4fd1c5;
    --primary-dark: #234e52;
    --secondary-color: #4a5568;
    --background-color: #f7fafc;
    --card-bg: #ffffff;
    --text-color: #2d3748;
    --text-light: #718096;
    --border-color: #e2e8f0;
    --accent-color: #319795;
    --success-color: #319795;
    --danger-color: #e53e3e;
    --font-family: 'Plus Jakarta Sans', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Header */
.header {
    background-color: white;
    color: var(--text-color);
    padding: 18px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--primary-color);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 20px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: white;
    padding: 90px 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.badge {
    background-color: rgba(255, 255, 255, 0.15);
    color: #e6fffa;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.25;
}

.hero p {
    font-size: 1.15rem;
    color: #e6fffa;
    margin-bottom: 35px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border: none;
}

.btn-primary:hover {
    background-color: #81e6d9;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Sections */
.section {
    padding: 75px 0;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: 45px;
}

.section-header h2 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 30px;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
    border: 1px solid var(--border-color);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.25rem;
}

.card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.border-left {
    border-left: 4px solid var(--primary-color);
}

/* Planner */
.planner-box {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 35px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-color);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--text-color);
}

.input-group input {
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-color);
    outline: none;
}

.input-group input:focus {
    border-color: var(--primary-color);
}

/* Results Box */
.results-box {
    background-color: #f8fafc;
    border-radius: 6px;
    padding: 22px;
    border: 1px solid var(--border-color);
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.result-row:last-child {
    border-bottom: none;
}

.result-row strong {
    color: var(--text-color);
}

.total-row {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--primary-dark);
    border-top: 2px solid var(--border-color);
    padding-top: 12px;
    margin-top: 4px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.data-table th {
    background-color: #e6fffa;
    color: var(--primary-dark);
    font-weight: 600;
}

.data-table tr:hover {
    background-color: #f7fafc;
}

/* Footer */
.footer {
    background-color: #2d3748;
    color: #e2e8f0;
    padding: 60px 0 30px 0;
    font-size: 0.9rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.footer-info h3 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.footer-info p {
    color: #a0aec0;
    max-width: 500px;
}

.footer-links {
    display: flex;
    gap: 20px;
    border-bottom: 1px solid #4a5568;
    padding-bottom: 20px;
}

.footer-links a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-disclaimer {
    color: #718096;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-disclaimer strong {
    color: #a0aec0;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links a {
        margin: 0 10px;
    }
    
    .hero h1 {
        font-size: 2.1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
}