/* ==========================================
   CSS Variables & Root Styles
   ========================================== */
:root {
    /* Color Palette - Deep Blue Theme */
    --primary-navy: #0a1628;
    --secondary-navy: #132642;
    --accent-blue: #1e3a5f;
    --bright-blue: #2d5f8d;
    --electric-blue: #4a90e2;
    --light-blue: #6bb6ff;
    
    /* Neutral Colors */
    --text-light: #e8f1f8;
    --text-muted: #a8c5e0;
    --border-color: #2d4663;
    --overlay: rgba(10, 22, 40, 0.85);
    
    /* Typography */
    --font-heading: 'Crimson Pro', serif;
    --font-body: 'DM Sans', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--primary-navy);
    color: var(--text-light);
    line-height: 1.7;
    overflow-x: hidden;
}

::selection {
    background: var(--electric-blue);
    color: var(--text-light);
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-light);
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition-smooth);
}

.header.scrolled {
    background: var(--overlay);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar {
    padding: 1.5rem 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: -0.5px;
    position: relative;
}

.logo-text::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--electric-blue), var(--light-blue));
    border-radius: 2px;
}

.navbar-nav {
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted) !important;
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--electric-blue);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-light) !important;
}

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

.btn-contact {
    background: linear-gradient(135deg, var(--electric-blue), var(--bright-blue));
    color: var(--text-light) !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: 30px;
    transition: var(--transition-smooth);
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(74, 144, 226, 0.4);
}

.btn-contact::before {
    display: none;
}

.navbar-toggler {
    border: none;
    color: var(--text-light);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(232, 241, 248, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 50%, var(--accent-blue) 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(74, 144, 226, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(45, 95, 141, 0.15) 0%, transparent 50%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.1;
}

.title-line {
    display: block;
    background: linear-gradient(135deg, var(--text-light), var(--light-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out backwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.btn {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--electric-blue), var(--bright-blue));
    color: var(--text-light);
    border: none;
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(74, 144, 226, 0.4);
    color: var(--text-light);
}

.btn-outline {
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--accent-blue);
    border-color: var(--electric-blue);
    transform: translateY(-3px);
    color: var(--text-light);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: fadeIn 1s ease-out 1s backwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.scroll-indicator span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
}

.scroll-line {
    width: 2px;
    height: 50px;
    background: linear-gradient(to bottom, var(--electric-blue), transparent);
    animation: scrollAnimation 2s ease-in-out infinite;
}

@keyframes scrollAnimation {
    0%, 100% {
        height: 50px;
        opacity: 1;
    }
    50% {
        height: 30px;
        opacity: 0.5;
    }
}

/* ==========================================
   Section Styles
   ========================================== */
.section-padding {
    padding: var(--section-padding) 0;
}

.section-header {
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
    position: relative;
}

.title-decoration {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--electric-blue), var(--light-blue));
    border-radius: 2px;
    position: relative;
}

.title-decoration::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: var(--electric-blue);
    border-radius: 50%;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 700px;
    margin-top: 1rem;
}

/* ==========================================
   About Section
   ========================================== */
.about {
    background: var(--secondary-navy);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.value-card {
    padding: 2rem;
    background: var(--accent-blue);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    height: 100%;
}

.value-card:hover {
    transform: translateY(-10px);
    background: var(--bright-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.value-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--light-blue);
}

.value-card p {
    color: var(--text-muted);
    margin: 0;
}

/* ==========================================
   Services Section
   ========================================== */
.services {
    background: var(--primary-navy);
}

.service-card {
    padding: 2.5rem 2rem;
    background: var(--secondary-navy);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--electric-blue), var(--light-blue));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

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

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--electric-blue);
    box-shadow: 0 20px 50px rgba(74, 144, 226, 0.2);
}

.service-icon {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-heading);
    background: linear-gradient(135deg, var(--electric-blue), var(--light-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    opacity: 0.4;
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
    opacity: 1;
}

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

.service-card p {
    color: var(--text-muted);
    margin: 0;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq {
    background: var(--secondary-navy);
}

.accordion-item {
    background: var(--accent-blue);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    border-radius: 15px;
    overflow: hidden;
}

.accordion-button {
    background: transparent;
    color: var(--text-light);
    font-weight: 600;
    font-size: 1.125rem;
    padding: 1.5rem 2rem;
    border: none;
    transition: var(--transition-smooth);
}

.accordion-button:not(.collapsed) {
    background: var(--bright-blue);
    color: var(--text-light);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: transparent;
}

.accordion-button::after {
    filter: brightness(0) invert(1);
}

.accordion-body {
    padding: 0 2rem 2rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact {
    background: var(--primary-navy);
}

.contact-info {
    padding: 2.5rem;
    background: var(--secondary-navy);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    height: 100%;
    transition: var(--transition-smooth);
}

.contact-info:hover {
    transform: translateY(-5px);
    border-color: var(--electric-blue);
    box-shadow: 0 15px 40px rgba(74, 144, 226, 0.2);
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--light-blue);
}

.contact-detail {
    color: var(--text-muted);
    line-height: 1.8;
}

.contact-detail strong {
    color: var(--text-light);
    display: block;
    margin-bottom: 0.5rem;
}

.contact-detail a {
    color: var(--electric-blue);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.contact-detail a:hover {
    color: var(--light-blue);
    text-decoration: underline;
}

.contact-cta {
    background: var(--accent-blue);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.contact-cta h4 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-cta p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--secondary-navy);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-brand .logo-text {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer h4 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

.footer-contact {
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-contact a {
    color: var(--electric-blue);
    text-decoration: none;
}

.footer-contact a:hover {
    color: var(--light-blue);
}

.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 991px) {
    :root {
        --section-padding: 80px;
    }
    
    .navbar-nav {
        gap: 1rem;
        margin-top: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 767px) {
    :root {
        --section-padding: 60px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.875rem 2rem;
    }
}

/* ==========================================
   Utility Classes
   ========================================== */
.text-gradient {
    background: linear-gradient(135deg, var(--electric-blue), var(--light-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}