/* Design System & Custom Properties */
:root {
    /* Light Theme (Default) */
    --primary: #0056b3;
    --primary-light: #3385ff;
    --primary-dark: #003d80;
    --secondary: #00e5ff;
    --accent: #ff4081;
    --bg-main: #f8fafe;
    --bg-card: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.8);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: rgba(226, 232, 240, 0.8);
    --shadow-color: rgba(0, 86, 179, 0.08);
    --glow-opacity: 0.15;
    
    /* System Font */
    --font-sans: 'Outfit', sans-serif;
    
    /* Layout Constants */
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Dark Theme */
    --primary: #3385ff;
    --primary-light: #66a3ff;
    --primary-dark: #0056b3;
    --secondary: #00e5ff;
    --accent: #ff4081;
    --bg-main: #0b1329;
    --bg-card: #1c2541;
    --bg-nav: rgba(11, 19, 41, 0.8);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --glow-opacity: 0.3;
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    border: 3px solid var(--bg-main);
}

/* Navigation Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--bg-nav);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.main-header.scrolled {
    height: 70px;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
}

.logo-svg {
    width: 44px;
    height: 44px;
    transition: var(--transition);
}

.logo:hover .logo-svg {
    transform: rotate(15deg) scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.1;
    letter-spacing: 0.5px;
}

.brand-sub {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
}

/* Menu Links */
.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

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

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

.nav-btn {
    background-color: var(--primary);
    color: white !important;
    padding: 10px 20px !important;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 14px rgba(0, 86, 179, 0.2);
}

.nav-btn::after {
    display: none;
}

.nav-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.3);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover {
    background-color: var(--border-color);
    color: var(--primary);
}

.sun-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 100px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 86, 179, var(--glow-opacity)) 0%, rgba(0, 229, 255, 0) 70%);
    z-index: -1;
    pointer-events: none;
    border-radius: 50%;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.hero-tagline {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    display: block;
    margin-bottom: 16px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 86, 179, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.35);
}

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

.btn-outline:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Interactive Card Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.card-visual-wrapper {
    position: relative;
    width: 320px;
    height: 420px;
}

.card-visual-element {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    z-index: -1;
}

.primary-glow {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    filter: blur(30px);
    opacity: 0.4;
    transform: scale(0.95);
}

.interactive-card {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 32px;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.interactive-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: skewX(-25deg);
    transition: 0.75s;
}

.interactive-card:hover::before {
    left: 150%;
}

.interactive-card:hover {
    transform: translateY(-10px) rotateY(5deg);
}

.card-logo {
    width: 70px;
    height: 70px;
}

.card-logo-svg {
    width: 100%;
    height: 100%;
}

.interactive-card h3 {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: 1px;
    margin-top: auto;
}

.slogan-visual {
    font-size: 0.65rem;
    letter-spacing: 1.2px;
    opacity: 0.7;
    margin-top: 4px;
    margin-bottom: 24px;
    font-weight: 600;
}

.card-chip {
    width: 45px;
    height: 35px;
    background: linear-gradient(135deg, #ffd700, #ffa500);
    border-radius: 6px;
    position: absolute;
    right: 32px;
    top: 32px;
    opacity: 0.9;
}

.card-footer-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    opacity: 0.8;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 16px;
}

/* Sections Base Styling */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 60px;
}

.sub-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
}

/* Services */
.services {
    background-color: var(--bg-card);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 32px var(--shadow-color);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background-color: rgba(0, 86, 179, 0.06);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background-color: var(--primary);
    color: white;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* About Us Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-visual {
    position: relative;
    height: 450px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glow-sphere {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.2) 0%, rgba(0, 86, 179, 0) 70%);
    border-radius: 50%;
    filter: blur(20px);
}

.about-image-card {
    width: 340px;
    height: 380px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    padding: 40px;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    box-shadow: 0 20px 40px var(--shadow-color);
    position: relative;
}

.stats-badge {
    position: absolute;
    top: -20px;
    right: -20px;
    background-color: var(--secondary);
    color: #0b1329;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 20px rgba(0, 229, 255, 0.3);
    text-align: center;
    font-family: var(--font-sans);
}

.badge-num {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
}

.badge-txt {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.about-image-card h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.about-image-card p {
    font-size: 0.95rem;
    opacity: 0.8;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.about-content > p {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.value-item {
    display: flex;
    gap: 16px;
}

.value-bullet {
    width: 12px;
    height: 12px;
    background-color: var(--secondary);
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
    box-shadow: 0 0 10px var(--secondary);
}

.value-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.value-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Benefits Section */
.benefits {
    background-color: var(--bg-card);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.benefit-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
}

.benefit-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(0, 229, 255, 0.1);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    margin-bottom: 20px;
}

.benefit-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.benefit-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--text-muted);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.detail-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(0, 86, 179, 0.06);
    color: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-item span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.detail-item strong {
    font-size: 1.05rem;
    color: var(--text-main);
}

/* Form */
.contact-form-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-main);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.15);
}

.form-feedback {
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 10px;
    text-align: center;
}

.form-feedback.success {
    color: #2e7d32;
}

.form-feedback.error {
    color: #c62828;
}

/* Footer */
.footer {
    background-color: #0b1329;
    color: #94a3b8;
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 48px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.95rem;
}

.footer-links h4 {
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    grid-column: 1 / -1;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    margin-top: 30px;
    text-align: center;
    font-size: 0.85rem;
}

/* Reveal on Scroll Elements */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .about-container, .contact-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-visual {
        order: 2;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .mobile-toggle {
        display: flex;
        z-index: 1100;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--bg-card);
        z-index: 1050;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    /* Toggle icon state when open */
    .mobile-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    .mobile-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    .mobile-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
}