/* ===================================
   RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-primary: #0a0a0a;
    --color-secondary: #1a1a1a;
    --color-accent: #478CBF;
    --color-accent-light: #5FBCE4;
    --color-text: #ffffff;
    --color-text-muted: #a0a0a0;
    --color-border: #2a2a2a;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
}

html {
    scroll-behavior: smooth;
}

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

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

/* ===================================
   HEADER & NAVIGATION
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.nav {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 140px;
    width: auto;
    transition: transform var(--transition-normal);
}

.logo-img:hover {
    transform: scale(1.05);
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav__link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-weight-normal);
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    transition: width var(--transition-normal);
}

.nav__link:hover {
    color: var(--color-accent-light);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav__toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-normal);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero__content {
    z-index: 2;
}

.hero__logo {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero__logo-img {
    height: 280px;
    width: auto;
    filter: drop-shadow(0 10px 30px rgba(71, 140, 191, 0.3));
    transition: transform var(--transition-normal);
}

.hero__logo-img:hover {
    transform: scale(1.05);
}

.hero__title {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

.hero__title-main {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: -2px;
    line-height: 0.9;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease;
}

.hero__title-sub {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-light);
    letter-spacing: 8px;
    color: var(--color-text-muted);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero__description {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero__cta {
    display: flex;
    gap: var(--spacing-sm);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero__visual {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.geometric-shape {
    position: absolute;
    border: 2px solid var(--color-accent);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    transform: rotate(45deg);
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    border-color: var(--color-accent-light);
    transform: rotate(15deg);
    animation-delay: 1s;
}

.shape-3 {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    animation-delay: 2s;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 50px;
    border: 2px solid var(--color-border);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-indicator span {
    width: 4px;
    height: 10px;
    background-color: var(--color-accent);
    border-radius: 2px;
    animation: scroll 1.5s ease-in-out infinite;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    border-radius: 2px;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-text);
    box-shadow: 0 4px 15px rgba(71, 140, 191, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(71, 140, 191, 0.5);
}

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

.btn-secondary:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ===================================
   SECTIONS
   =================================== */
section {
    padding: var(--spacing-xl) 0;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section__title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -1px;
}

.section__line {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    margin: 0 auto;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about {
    background-color: var(--color-secondary);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about__paragraph {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.about__paragraph strong {
    color: var(--color-text);
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-card {
    background-color: var(--color-primary);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-accent);
    transform: translateX(10px);
}

.feature-card__icon {
    width: 50px;
    height: 50px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.feature-card__icon svg {
    width: 100%;
    height: 100%;
}

.feature-card__title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semibold);
}

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

/* ===================================
   TECH SECTION
   =================================== */
.tech__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.tech__showcase {
    text-align: center;
}

.tech__logo {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-md);
    animation: float 6s ease-in-out infinite;
}

.tech__logo svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 10px 30px rgba(71, 140, 191, 0.3));
}

.tech__name {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
}

.tech__description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
}

.tech__benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: start;
    padding: var(--spacing-sm);
    border-left: 2px solid var(--color-border);
    transition: all var(--transition-normal);
}

.benefit-item:hover {
    border-left-color: var(--color-accent);
    transform: translateX(10px);
}

.benefit-item__number {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    line-height: 1;
    opacity: 0.3;
}

.benefit-item__content h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semibold);
}

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

/* ===================================
   ECOSYSTEM SECTION
   =================================== */
.ecosystem {
    background-color: var(--color-secondary);
}

/* Projects Grid - Featured */
.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.project-card {
    background-color: var(--color-primary);
    border: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.project-card--featured {
    border-width: 2px;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    transition: width var(--transition-normal);
}

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.project-card:hover::before {
    width: 100%;
}

.project-card__banner {
    height: 200px;
    background: linear-gradient(135deg, rgba(71, 140, 191, 0.1), rgba(95, 188, 228, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.project-card__banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(71, 140, 191, 0.1), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover .project-card__banner::after {
    opacity: 1;
}

.project-card__logo {
    max-height: 140px;
    max-width: 80%;
    object-fit: contain;
    transition: transform var(--transition-normal);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
    z-index: 1;
    position: relative;
}

.project-card:hover .project-card__logo {
    transform: scale(1.1);
}

.project-card__content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card__header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
}

.project-card__title {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.5px;
}

.project-card__arrow {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.project-card:hover .project-card__arrow {
    transform: translate(5px, -5px);
}

.project-card__description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
    font-size: 1.05rem;
    line-height: 1.6;
}

.project-card__tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.project-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: rgba(71, 140, 191, 0.15);
    color: var(--color-accent-light);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid rgba(71, 140, 191, 0.3);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.project-card:hover .project-tag {
    background-color: rgba(71, 140, 191, 0.25);
    border-color: var(--color-accent);
}

/* Institutional Support */
.institutional-support {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.institutional-support__header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.institutional-support__title {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.institutional-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-primary);
    border: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition-normal);
    max-width: 600px;
    margin: 0 auto;
}

.institutional-card:hover {
    border-color: var(--color-accent);
    transform: translateX(5px);
}

.institutional-card__logo {
    height: 60px;
    width: auto;
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.institutional-card:hover .institutional-card__logo {
    transform: scale(1.05);
}

.institutional-card__info {
    flex-grow: 1;
}

.institutional-card__name {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0.25rem;
}

.institutional-card__description {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.institutional-card__arrow {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.institutional-card:hover .institutional-card__arrow {
    transform: translateX(5px);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact__text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.contact__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
    max-width: 400px;
    margin: 0 auto;
}

.contact__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    text-decoration: none;
    font-size: 1.1rem;
    transition: color var(--transition-fast);
}

.contact__link:hover {
    color: var(--color-accent-light);
}

.contact__link svg {
    width: 24px;
    height: 24px;
}

/* ===================================
   TECH LINK
   =================================== */
.tech__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-accent);
    text-decoration: none;
    font-size: 1rem;
    margin-top: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.tech__link:hover {
    color: var(--color-accent-light);
}

.tech__link svg {
    width: 20px;
    height: 20px;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background-color: var(--color-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer__brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.footer__logo {
    height: 200px;
    width: auto;
    margin-bottom: var(--spacing-xs);
}

.footer__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 2px;
}

.footer__text {
    color: var(--color-text-muted);
}

.footer__heading {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
}

.footer__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer__link {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-accent-light);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    50% {
        transform: translateY(-20px) rotate(45deg);
    }
}

@keyframes scroll {
    0% {
        opacity: 0;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(15px);
    }
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 968px) {
    .hero__container,
    .about__content,
    .tech__content {
        grid-template-columns: 1fr;
    }
    
    .hero__visual {
        height: 300px;
    }
    
    .hero__logo-img {
        height: 160px;
    }
    
    .logo-img {
        height: 90px;
    }
    
    .projects__grid {
        grid-template-columns: 1fr;
    }
    
    .project-card__banner {
        height: 180px;
    }
    
    .project-card__logo {
        max-height: 120px;
    }
    
    .institutional-card {
        flex-direction: column;
        text-align: center;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__brand {
        align-items: center;
    }
    
    .nav__menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: var(--color-primary);
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        transition: left var(--transition-normal);
    }
    
    .nav__menu.active {
        left: 0;
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .nav__toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .nav__toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav__toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero__cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .projects__grid {
        gap: var(--spacing-md);
    }
    
    .project-card__banner {
        height: 150px;
    }
    
    .project-card__logo {
        max-height: 100px;
    }
    
    .project-card__title {
        font-size: 1.4rem;
    }
}