:root {
    --primary-color: #1b3a61;
    --primary-dark: #122844;
    --accent-color: #a8cf12;
    --accent-purple: #7d3cb5;
    --text-color: #333;
    --text-light: #666;
    --white: #ffffff;
    --bg-light: #f8f9fa;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--white);
}

h1, h2, h3, h4, .logo-text {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #92b510;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(168, 207, 18, 0.3);
}

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

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

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

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

/* Nav */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
}

#main-nav.scrolled {
    background: rgba(27, 58, 97, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

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

.logo a {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-size: 1.2rem;
}

.logo-text {
    font-size: 1.5rem;
    color: var(--white);
    letter-spacing: -1px;
}

.logo-text span {
    color: var(--accent-color);
}

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

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--accent-color);
}

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    color: var(--white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(27, 58, 97, 0.9) 0%, rgba(125, 60, 181, 0.4) 100%);
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero .highlight {
    color: var(--accent-color);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

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

.section-header {
    margin-bottom: 60px;
}

.subtitle {
    display: block;
    color: var(--accent-purple);
    text-transform: uppercase;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.divider {
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    margin: 0;
}

.align-center .divider { margin: 0 auto; }

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

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

.service-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.service-card .icon {
    width: 60px;
    height: 60px;
    background: rgba(168, 207, 18, 0.1);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.learn-more {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Solutions */
.solutions-wrapper {
    display: flex;
    align-items: center;
    gap: 5rem;
}

.solutions-image {
    flex: 1;
    background: var(--primary-color);
    border-radius: 30px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(168, 207, 18, 0.2);
    position: relative;
    overflow: hidden;
}

.image-inner {
    position: relative;
}

.floating-data {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--accent-color);
    font-weight: 800;
    opacity: 0.5;
}

.solutions-content {
    flex: 1;
}

.check-list {
    list-style: none;
    margin: 2rem 0;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.check-list i {
    color: var(--accent-color);
}

/* Stats */
.stats {
    background: var(--primary-color);
    color: var(--white);
    padding: 60px 0;
}

.stats-grid {
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.stat-item .number {
    font-size: 3.5rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
}

.stat-item .plus {
    font-size: 2rem;
    color: var(--accent-color);
}

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

.pub-card {
    padding: 1.5rem;
    border-left: 4px solid var(--accent-purple);
    background: var(--bg-light);
    transition: var(--transition);
}

.pub-card:hover {
    background: #eee;
}

/* Contact */
.contact {
    background-color: var(--bg-light);
}

.contact-card {
    display: flex;
    background: var(--white);
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
}

.contact-info {
    flex: 1;
    background: var(--primary-color);
    color: var(--white);
    padding: 4rem;
}

.contact-info h2 { color: var(--white); }

.info-items {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.info-item i {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--accent-color);
}

.contact-form {
    flex: 1.5;
    padding: 4rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

input, textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

input:focus, textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(168, 207, 18, 0.1);
}

textarea {
    height: 150px;
    resize: none;
}

/* Footer */
footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.6);
    padding: 40px 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
}

/* Animations Reveal */
.reveal-up, .reveal-text, .reveal-left, .reveal-right {
    opacity: 0;
}

/* Responsive */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .solutions-wrapper { flex-direction: column; text-align: center; }
    .align-center { text-align: center; }
    .contact-card { flex-direction: column; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-btns { flex-direction: column; }
    .stats-grid { flex-direction: column; gap: 3rem; }
}