:root {
    --primary-color: #0f172a;
    --secondary-color: #64748b;
    --accent-color: #16a34a;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --text-dark: #1e293b;
    --text-light: #475569;
    --font-main: 'Inter', sans-serif;
    --font-tamil: 'Mukta Malar', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --radius: 0.5rem;
    --container-width: 1200px;
}

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

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

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

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

ul {
    list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
    color: var(--primary-color);
}

.ta-font {
    font-family: var(--font-tamil);
}

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #1e293b;
}

.btn-accent {
    background-color: var(--accent-color);
    color: var(--white);
}

.btn-accent:hover {
    background-color: #15803d;
}

.btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.grid {
    display: grid;
    gap: 2rem;
}

.text-center {
    text-align: center;
}

.mb-1 {
    margin-bottom: 1rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.section-padding {
    padding: 4rem 0;
}

/* Header & Nav */
header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-dark);
}

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

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

/* Enhanced Language Toggle */
.lang-btn {
    background: var(--light-bg);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    cursor: pointer;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 15px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.lang-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Call Button Enhancements */
.nav-links .btn-primary {
    background-color: #ef4444;
    /* Bright Red/Orange for visibility */
    color: white;
    box-shadow: 0 4px 14px 0 rgba(239, 68, 68, 0.39);
    padding: 0.6rem 1.2rem !important;
}

.nav-links .btn-primary:hover {
    background-color: #dc2626;
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.23);
}

/* Language Visibility Logic */
[lang="ta"] {
    display: none;
}

[lang="en"] {
    display: block;
}

body[data-lang="ta"] [lang="ta"] {
    display: block;
}

body[data-lang="ta"] [lang="en"] {
    display: none;
}

body[data-lang="ta"] .ta-font-show {
    font-family: var(--font-tamil);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('assets/images/garden-sofa-upholstery-madurai.jpg');
    background-size: cover;
    background-position: center;
    color: var(--white);
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Voice Search / SEO Section */
.voice-search {
    background: var(--light-bg);
    padding: 3rem 0;
    text-align: center;
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.keyword-tag {
    background: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
    color: var(--text-light);
}

/* Before/After Grid */
.before-after-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.ba-card img {
    border-radius: var(--radius);
    width: 100%;
    height: 250px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
}

/* Services Preview */
.services-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        text-align: center;
    }

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

    .mobile-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }
}
/* --- Animations --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    animation: fadeInUp 0.8s ease-out forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

.service-card { transition: transform 0.4s, box-shadow 0.4s; }
.service-card:hover { transform: translateY(-10px); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }

.ba-card img { transition: transform 0.5s ease; }
.ba-card:hover img { transform: scale(1.03); }