/* ===================================
   LADDO BIRI GLOBAL SERVICES
   Premium Corporate Website Styles
   =================================== */

/* ===================================
   ROOT VARIABLES & RESET
   =================================== */
:root {
    /* Color Palette */
    --primary-gold: #D4AF37;
    --gold-light: #E8C968;
    --gold-dark: #B8941F;
    --dark-bg: #0A0A0A;
    --dark-secondary: #1A1A1A;
    --dark-tertiary: #2A2A2A;
    --text-white: #FFFFFF;
    --text-light: #E0E0E0;
    --text-gray: #B0B0B0;
    --accent-blue: #2C3E50;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   TYPOGRAPHY
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; font-weight: 900; }
h2 { font-size: 2.5rem; font-weight: 700; }
h3 { font-size: 1.75rem; font-weight: 600; }
h4 { font-size: 1.5rem; font-weight: 600; }

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

/* ===================================
   LAYOUT UTILITIES
   =================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-dark {
    background-color: var(--dark-secondary);
}

/* ===================================
   HEADER & NAVIGATION
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.25rem 0;
    transition: var(--transition-smooth);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.header.scrolled {
    padding: 0.75rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1.2;
}

.logo-text small {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--primary-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-gold);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-gold), var(--gold-light));
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--dark-secondary);
    z-index: 2000;
    transition: right 0.3s ease;
    padding: 2rem;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 2rem;
    cursor: pointer;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 4rem;
}

.mobile-nav-link {
    color: var(--text-light);
    font-size: 1.25rem;
    font-weight: 500;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-nav-link:hover {
    color: var(--primary-gold);
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold), var(--gold-light));
    color: var(--dark-bg);
    border-color: var(--primary-gold);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--gold-light), var(--primary-gold));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border-color: var(--text-white);
}

.btn-secondary:hover {
    background: var(--text-white);
    color: var(--dark-bg);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: 
        linear-gradient(135deg, rgba(10, 10, 10, 0.9) 0%, rgba(26, 26, 26, 0.8) 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%23D4AF37;stop-opacity:0.1" /><stop offset="100%" style="stop-color:%23B8941F;stop-opacity:0.05" /></linearGradient></defs><rect fill="url(%23grad)" width="1200" height="800"/></svg>');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    z-index: 10;
    position: relative;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 1rem;
    text-shadow: 2px 4px 10px rgba(0, 0, 0, 0.5);
    line-height: 1.1;
}

.hero-subtitle-inline {
    color: var(--primary-gold);
    display: block;
    font-size: 3.5rem;
}

.hero-subtitle {
    font-size: 1.35rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--primary-gold);
    font-size: 2rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===================================
   SECTION HEADERS
   =================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.title-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-gold), var(--gold-light));
    margin: 1rem auto;
    border-radius: 2px;
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.about-card {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    padding: 2.5rem;
    border-radius: 8px;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-gold), var(--gold-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-gold);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.2);
}

.about-card:hover::before {
    transform: scaleX(1);
}

.about-icon {
    font-size: 3rem;
    color: var(--primary-gold);
    margin-bottom: 1.5rem;
}

.about-card h3 {
    color: var(--text-white);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

.values-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(212, 175, 55, 0.05);
    border-radius: 4px;
    border-left: 3px solid var(--primary-gold);
}

.value-item i {
    color: var(--primary-gold);
    font-size: 1.5rem;
}

.value-item span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-white);
}

/* ===================================
   SERVICES SECTION
   =================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--dark-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
    text-align: center;
}

.service-card:hover {
    border-color: var(--primary-gold);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-gold);
    margin-bottom: 1.5rem;
    transition: var(--transition-fast);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    color: var(--gold-light);
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.service-card p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===================================
   LEADERSHIP SECTION
   =================================== */
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.leadership-card {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    padding: 2.5rem;
    border-radius: 8px;
    border: 1px solid rgba(212, 175, 55, 0.1);
    text-align: center;
    transition: var(--transition-smooth);
}

.leadership-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-gold);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.2);
}

.leadership-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(184, 148, 31, 0.05));
    border-radius: 50%;
    border: 2px solid rgba(212, 175, 55, 0.3);
    font-size: 2.5rem;
    color: var(--primary-gold);
    transition: var(--transition-fast);
}

.leadership-card:hover .leadership-icon {
    transform: scale(1.1);
    border-color: var(--primary-gold);
}

.leadership-card h3 {
    color: var(--text-white);
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.leadership-card p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===================================
   PORTFOLIO SECTION
   =================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-card {
    background: var(--dark-bg);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.portfolio-card:hover {
    border-color: var(--primary-gold);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.portfolio-image {
    height: 200px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(184, 148, 31, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--primary-gold);
    transition: var(--transition-fast);
}

.portfolio-card:hover .portfolio-image {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 31, 0.1));
}

.portfolio-content {
    padding: 2rem;
}

.portfolio-content h3 {
    color: var(--text-white);
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.portfolio-content p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-card {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition-smooth);
}

.contact-info-card:hover {
    border-color: var(--primary-gold);
    transform: translateX(5px);
}

.contact-info-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(184, 148, 31, 0.05));
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--primary-gold);
    margin-bottom: 1rem;
}

.contact-info-card h3 {
    color: var(--text-white);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-info-card p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 0;
}

.contact-info-card a {
    color: var(--primary-gold);
    transition: var(--transition-fast);
}

.contact-info-card a:hover {
    color: var(--gold-light);
}

/* ===================================
   CONTACT FORM
   =================================== */
.contact-form-wrapper {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    padding: 3rem;
    border-radius: 8px;
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-white);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    background: var(--dark-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--text-white);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

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

.form-message {
    padding: 1.5rem;
    border-radius: 4px;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
}

.form-success {
    background: rgba(46, 204, 113, 0.1);
    border: 1px solid rgba(46, 204, 113, 0.3);
    color: #2ECC71;
}

.form-error {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.3);
    color: #E74C3C;
}

.form-message i {
    font-size: 1.5rem;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--dark-bg);
    padding: 3rem 0;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.footer-logo p {
    color: var(--text-light);
    font-size: 1rem;
    margin: 0;
}

.footer-text {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.footer-text p {
    margin: 0.5rem 0;
}

.footer-tagline {
    color: var(--primary-gold);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    justify-content: center;
}

.footer-tagline i {
    font-size: 1rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    /* Navigation */
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .header .btn-primary {
        display: none;
    }
    
    /* Hero */
    .hero {
        min-height: 90vh;
        padding: 8rem 0 4rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle-inline {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Typography */
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Grids */
    .about-grid,
    .services-grid,
    .leadership-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .logo img {
        height: 40px;
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle-inline {
        font-size: 1.8rem;
    }
    
    .section-header {
        margin-bottom: 2.5rem;
    }
    
    .about-card,
    .service-card,
    .leadership-card,
    .contact-info-card {
        padding: 1.5rem;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Large Desktop (1400px and above) */
@media (min-width: 1400px) {
    :root {
        --container-max: 1400px;
    }
    
    .hero-title {
        font-size: 5rem;
    }
    
    .hero-subtitle-inline {
        font-size: 4.5rem;
    }
    
    .section-title {
        font-size: 3.5rem;
    }
}