/* 
 * Kolkata SEO Wala — Premium Visual Design System & Core Stylesheet
 * Brand Palette: Deep Navy, Midnight Navy, Metallic Gold, Champagne Gold, White
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
    --color-deep-navy: #08111F;
    --color-midnight-navy: #0D1726;
    --color-dark-black: #05080D;
    --color-metallic-gold: #C9A227;
    --color-champagne-gold: #E3C76F;
    --color-light: #F5F5F2;
    --color-secondary-text: #A7B0BC;
    --color-border: #263244;
    --color-border-glow: rgba(201, 162, 39, 0.3);
    
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --glass-bg: rgba(13, 23, 38, 0.75);
    --glass-border: rgba(38, 50, 68, 0.8);
    --glass-card: rgba(13, 23, 38, 0.6);
    --shadow-gold: 0 10px 30px -10px rgba(201, 162, 39, 0.25);
    --shadow-navy: 0 20px 40px -15px rgba(5, 8, 13, 0.7);
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-deep-navy);
    color: var(--color-light);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-light);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.35rem); }

p {
    color: var(--color-secondary-text);
    font-size: 1.05rem;
    margin-bottom: 1rem;
}

p:last-child { margin-bottom: 0; }

a {
    color: var(--color-champagne-gold);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-metallic-gold);
}

/* Layout Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: 5rem 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 3.5rem 0;
    }
}

/* Text Gradient Accents */
.text-gold-gradient {
    background: linear-gradient(135deg, #FFF 0%, var(--color-champagne-gold) 50%, var(--color-metallic-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge-gold {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    background: rgba(201, 162, 39, 0.1);
    border: 1px solid var(--color-border-glow);
    color: var(--color-champagne-gold);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.25rem;
}

/* -------------------------------------------------------------------------- */
/* BLOG ARTICLE RICH-TEXT TYPOGRAPHY & INLINE MEDIA                           */
/* -------------------------------------------------------------------------- */
.blog-article-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-secondary-text);
}

.blog-article-body p {
    margin-bottom: 1.25rem;
}

.blog-article-body h2 {
    color: var(--color-champagne-gold);
    font-size: 1.65rem;
    margin-top: 2.25rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.blog-article-body h3 {
    color: var(--color-light);
    font-size: 1.3rem;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.blog-article-body blockquote {
    border-left: 3px solid var(--color-champagne-gold);
    padding: 1rem 1.25rem;
    font-style: italic;
    color: var(--color-secondary-text);
    background: rgba(201, 162, 39, 0.04);
    border-radius: 0 8px 8px 0;
    margin: 1.75rem 0;
}

.blog-article-body ul, 
.blog-article-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.blog-article-body li {
    margin-bottom: 0.4rem;
}

.blog-article-body a {
    color: var(--color-champagne-gold);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.blog-article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    display: block;
    margin: 1.5rem auto;
}

.blog-article-body figure {
    margin: 2rem 0;
    text-align: center;
}

.blog-article-body figure img {
    margin: 0 auto;
}

.blog-article-body figcaption {
    font-size: 0.85rem;
    color: var(--color-secondary-text);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Dropdown Navigation */
.nav-item-has-dropdown {
    position: relative;
}

.dropdown-caret {
    font-size: 0.65rem;
    margin-left: 0.25rem;
    transition: transform 0.3s ease;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 290px;
    background: rgba(13, 23, 38, 0.98);
    backdrop-filter: blur(16px);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0.5rem 0;
    margin: 0;
    list-style: none !important;
    list-style-type: none !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    z-index: 1000;
}

.nav-dropdown-menu li {
    list-style: none !important;
    list-style-type: none !important;
    margin: 0 !important;
    padding: 0 !important;
}

.nav-item-has-dropdown:hover > .nav-dropdown-menu,
.nav-item-has-dropdown.open > .nav-dropdown-menu {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.nav-dropdown-menu li a {
    display: flex;
    flex-direction: column;
    padding: 0.65rem 1.25rem;
    color: var(--color-light);
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-dropdown-menu li a:hover {
    background: rgba(201, 162, 39, 0.08);
    color: var(--color-champagne-gold);
}

.nav-dropdown-menu li a strong {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-light);
}

.nav-dropdown-menu li a:hover strong {
    color: var(--color-champagne-gold);
}

.nav-dropdown-menu li a span {
    font-size: 0.75rem;
    color: var(--color-secondary-text);
    margin-top: 0.15rem;
}

/* Nav Phone Link */
.nav-phone-link {
    color: var(--color-champagne-gold) !important;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

/* Floating WhatsApp Button */
.whatsapp-float-btn {
    position: fixed !important;
    bottom: 24px !important;
    right: 24px !important;
    width: 58px !important;
    height: 58px !important;
    background-color: #25D366 !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4) !important;
    z-index: 99999 !important;
    text-decoration: none !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-float-btn:hover {
    transform: scale(1.08) !important;
    box-shadow: 0 12px 32px rgba(37, 211, 102, 0.6) !important;
}

.whatsapp-tooltip {
    position: absolute;
    right: 68px;
    background: rgba(13, 23, 38, 0.92);
    color: var(--color-light);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    white-space: nowrap;
    border: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.whatsapp-float-btn:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 991px) {
    .nav-dropdown-menu {
        position: static;
        width: 100%;
        opacity: 0;
        visibility: hidden;
        transform: none;
        box-shadow: none;
        background: transparent;
        border: none;
        padding-left: 1rem;
        display: none !important;
    }
    
    .nav-item-has-dropdown.open > .nav-dropdown-menu {
        display: block !important;
        opacity: 1 !important;
        visibility: visible !important;
    }
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.9rem 1.75rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    text-align: center;
    white-space: nowrap;
}

.btn-gold {
    background: linear-gradient(135deg, var(--color-champagne-gold) 0%, var(--color-metallic-gold) 100%);
    color: var(--color-dark-black);
    box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px -10px rgba(201, 162, 39, 0.4);
    color: var(--color-dark-black);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-light);
}

.btn-outline:hover {
    border-color: var(--color-metallic-gold);
    background: rgba(201, 162, 39, 0.08);
    color: var(--color-champagne-gold);
}

/* Header & Navbar */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 1.25rem 0;
    background: transparent;
}

.site-header.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 0.85rem 0;
    box-shadow: var(--shadow-navy);
}

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

.logo-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.site-logo-img {
    height: 48px;
    width: auto;
    max-width: 240px;
    object-fit: contain;
    transition: var(--transition);
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.4));
}

@media (max-width: 576px) {
    .site-logo-img {
        height: 38px;
    }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-secondary-text);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-light);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-light);
    font-size: 1.75rem;
    cursor: pointer;
}

@media (max-width: 992px) {
    .mobile-toggle { display: block; }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: var(--color-midnight-navy);
        border-left: 1px solid var(--color-border);
        flex-direction: column;
        justify-content: center;
        gap: 1.75rem;
        padding: 3rem 2rem;
        transition: right 0.35s ease;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    .nav-menu.open { right: 0; }
    .nav-cta-btn { width: 100%; }
}

/* Section Header */
.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 3.5rem auto;
}

.section-header p {
    font-size: 1.15rem;
    margin-top: 0.75rem;
}

/* Cards & Glassmorphism */
.glass-card {
    background: var(--glass-card);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 2rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.glass-card:hover {
    border-color: var(--color-border-glow);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px -10px rgba(5, 8, 13, 0.6);
}

/* Grid System */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

@media (max-width: 992px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Hero Section */
.hero-section {
    padding-top: 10rem;
    padding-bottom: 5rem;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 50% 20%, rgba(13, 23, 38, 0.8) 0%, var(--color-deep-navy) 70%);
}

.hero-glow {
    position: absolute;
    top: 15%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(circle, rgba(201, 162, 39, 0.12) 0%, rgba(8, 17, 31, 0) 70%);
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-btns {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 2.25rem;
}

@media (max-width: 576px) {
    .hero-btns { flex-direction: column; width: 100%; }
    .hero-btns .btn { width: 100%; }
}

/* Trust / Results Strip */
.trust-strip {
    background: var(--color-midnight-navy);
    border-y: 1px solid var(--color-border);
    padding: 2.5rem 0;
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--color-champagne-gold);
    line-height: 1;
    margin-bottom: 0.4rem;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--color-secondary-text);
}

/* Service Card Icon */
.service-icon {
    width: 54px;
    height: 54px;
    border-radius: 12px;
    background: rgba(201, 162, 39, 0.1);
    border: 1px solid var(--color-border-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-champagne-gold);
    margin-bottom: 1.25rem;
}

.service-icon svg {
    width: 26px;
    height: 26px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.service-card h3 {
    margin-bottom: 0.6rem;
}

.service-benefit {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--color-border);
    font-size: 0.9rem;
    color: var(--color-champagne-gold);
    font-weight: 500;
}

/* Process Timeline */
.process-step {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 2rem;
}

.process-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--color-midnight-navy);
    border: 1px solid var(--color-metallic-gold);
    color: var(--color-champagne-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
}

/* Case Study Badge */
.case-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--color-secondary-text);
    margin-bottom: 0.75rem;
}

/* FAQ Accordion */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--glass-card);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    color: var(--color-light);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}

.faq-answer {
    padding: 0 1.5rem 1.25rem 1.5rem;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question {
    color: var(--color-champagne-gold);
}

/* Form Controls */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-light);
    margin-bottom: 0.4rem;
}

.form-control, .form-select {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--color-dark-black);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-light);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-metallic-gold);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.15);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Modal Overlay & Sheet */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 8, 13, 0.85);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--color-midnight-navy);
    border: 1px solid var(--color-border-glow);
    border-radius: 16px;
    width: 100%;
    max-width: 580px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2.25rem;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: none;
    border: none;
    color: var(--color-secondary-text);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-close:hover { color: var(--color-light); }

/* Alert Box */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.alert-success {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.4);
    color: #4ade80;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #f87171;
}

/* Footer */
.site-footer {
    background: var(--color-dark-black);
    border-top: 1px solid var(--color-border);
    padding: 4rem 0 2rem 0;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 992px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 576px) {
    .footer-grid { grid-template-columns: 1fr; }
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}