/* CSS Variables for Design System */
:root {
    --jcb-yellow: #FFCC00;
    /* Standard JCB Yellow */
    --jcb-black: #000000;
    --dark-grey: #333333;
    --light-grey: #F4F4F4;
    --white: #FFFFFF;
    --text-color: #333333;
    --border-radius: 4px;
    --container-width: 1200px;
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--jcb-black);
    margin-bottom: 20px;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 5px;
    background-color: var(--jcb-yellow);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--jcb-yellow);
    color: var(--jcb-black);
}

.btn-primary:hover {
    background-color: #e6b800;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--jcb-black);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: #333;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--jcb-yellow);
    color: var(--jcb-black);
}

.btn-outline:hover {
    background-color: var(--jcb-yellow);
    color: var(--jcb-black);
    transform: translateY(-2px);
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.top-bar {
    background-color: var(--jcb-black);
    color: var(--jcb-yellow);
    padding: 8px 0;
    font-size: 0.9rem;
}

.top-bar .container {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--jcb-black);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--jcb-text);
}

.logo-highlight {
    background-color: var(--jcb-yellow);
    padding: 5px 10px;
    color: var(--jcb-black) !important;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-weight: 600;
    font-size: 1rem;
    color: var(--dark-grey);
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--jcb-black);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -5px;
    left: 0;
    background-color: var(--jcb-yellow);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Footer */
footer {
    background-color: var(--jcb-black);
    color: var(--white);
    padding: 60px 0 20px;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: var(--jcb-yellow);
    margin-bottom: 20px;
    font-size: 1.2rem;
    text-transform: uppercase;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--jcb-yellow);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #888;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Mobile menu logic to be added in JS */
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* EMI Calculator Styles */
.calculator-section {
    background-color: var(--jcb-yellow);
    padding: 80px 0;
}

.calc-container {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    margin: 0 auto;
    border-top: 6px solid var(--jcb-black);
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.calc-input-group {
    margin-bottom: 20px;
}

.calc-label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--jcb-black);
}

.calc-range {
    width: 100%;
    margin: 10px 0;
    cursor: pointer;
}

.calc-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.calc-number-input {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-weight: 600;
}

.result-box {
    background: var(--jcb-black);
    color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
}

.result-title {
    color: var(--jcb-yellow);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.result-amount {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 5px;
}

.result-note {
    font-size: 0.8rem;
    color: #888;
}

@media (max-width: 768px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }
}