/* ==========================================================================
   BERG WEBSITE STYLES 
   ========================================================================== */

/* Import fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Icon font */
@font-face {
    font-family: 'et-line';
    src: url('https://cdnjs.cloudflare.com/ajax/libs/et-line/1.0.0/et-line.eot');
    src: url('https://cdnjs.cloudflare.com/ajax/libs/et-line/1.0.0/et-line.eot?#iefix') format('embedded-opentype'),
        url('https://cdnjs.cloudflare.com/ajax/libs/et-line/1.0.0/et-line.woff') format('woff'),
        url('https://cdnjs.cloudflare.com/ajax/libs/et-line/1.0.0/et-line.ttf') format('truetype'),
        url('https://cdnjs.cloudflare.com/ajax/libs/et-line/1.0.0/et-line.svg#et-line') format('svg');
    font-weight: normal;
    font-style: normal;
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */
html {
    scroll-behavior: smooth;
}

.landing-body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.landing-body *,
.landing-body *::before,
.landing-body *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.landing-nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(25, 5, 35, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(61, 10, 65, 0.3);
}

.landing-nav-scrolled {
    background: rgba(45, 55, 72, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    border-bottom: none;
}

.landing-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.landing-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.landing-logo:hover {
    color: #a855f7;
}

.landing-logo img {
    height: 40px;
    width: auto;
}

.landing-nav-scrolled .landing-logo {
    color: white;
}

.landing-nav-scrolled .landing-logo:hover {
    color: rgb(172, 50, 74);
}

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

.landing-nav-links a {
    color: #e2e8f0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.landing-nav-links a:hover {
    color: #a855f7;
}

.landing-nav-scrolled .landing-nav-links a {
    color: white;
}

.landing-nav-scrolled .landing-nav-links a:hover {
    color: #8055bd;
}

/* Mobile Navigation Toggle */
.landing-nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    z-index: 2001;
    position: relative;
}

.landing-nav-toggle span {
    width: 25px;
    height: 3px;
    background: #ffffff;
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 3px;
}

.landing-nav-toggle.landing-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.landing-nav-toggle.landing-active span:nth-child(2) {
    opacity: 0;
}

.landing-nav-toggle.landing-active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Overlay */
.landing-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(25, 5, 35, 0.98);
    z-index: 1999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.landing-nav-overlay.landing-open {
    opacity: 1;
    visibility: visible;
}

.landing-overlay-nav ul {
    list-style: none;
    text-align: center;
}

.landing-overlay-nav li {
    margin: 2rem 0;
}

.landing-overlay-nav a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.landing-overlay-nav a:hover {
    color: #a855f7;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.landing-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: url('img/geo_banner_smaller.png') center/cover no-repeat;
    overflow: hidden;
    padding-top: 60px;
}

/* Starfield background effect */
.landing-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="10" cy="10" r="0.5" fill="white" opacity="0.3"/><circle cx="30" cy="25" r="0.3" fill="white" opacity="0.5"/><circle cx="50" cy="15" r="0.4" fill="white" opacity="0.4"/><circle cx="70" cy="35" r="0.2" fill="white" opacity="0.6"/><circle cx="85" cy="20" r="0.3" fill="white" opacity="0.5"/><circle cx="20" cy="50" r="0.4" fill="white" opacity="0.3"/><circle cx="60" cy="60" r="0.3" fill="white" opacity="0.4"/><circle cx="40" cy="75" r="0.5" fill="white" opacity="0.5"/><circle cx="80" cy="70" r="0.2" fill="white" opacity="0.6"/><circle cx="15" cy="85" r="0.4" fill="white" opacity="0.4"/></svg>') center/cover;
    animation: landing-starField 40s linear infinite;
    z-index: 1;
}

.landing-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><radialGradient id="violet1" cx="50%" cy="50%" r="50%"><stop offset="0%" style="stop-color:rgba(196,144,255,0.7);stop-opacity:1" /><stop offset="100%" style="stop-color:rgba(196,144,255,0);stop-opacity:0" /></radialGradient><radialGradient id="pink1" cx="50%" cy="50%" r="50%"><stop offset="0%" style="stop-color:rgba(249,168,212,0.5);stop-opacity:1" /><stop offset="100%" style="stop-color:rgba(249,168,212,0);stop-opacity:0" /></radialGradient></defs><circle cx="88" cy="92" r="0.4" fill="url(%23violet1)"><animate attributeName="opacity" values="0.2;0.6;0.2" dur="12s" repeatCount="indefinite"/><animateTransform attributeName="transform" type="translate" values="0,0; -3,-2; 0,0" dur="16s" repeatCount="indefinite"/></circle><circle cx="12" cy="8" r="0.3" fill="url(%23pink1)"><animate attributeName="opacity" values="0.3;0.7;0.3" dur="15s" repeatCount="indefinite"/><animateTransform attributeName="transform" type="translate" values="0,0; 2,3; 0,0" dur="18s" repeatCount="indefinite"/></circle></svg>') center/cover;
    animation: landing-starFieldSlow 60s linear infinite reverse;
    z-index: 2;
}

@keyframes landing-starField {
    0%, 100% { 
        transform: translateY(0px) translateX(0px) rotate(0deg); 
        opacity: 1;
    }
    25% { 
        transform: translateY(-15px) translateX(5px) rotate(0.5deg); 
        opacity: 0.8;
    }
    50% { 
        transform: translateY(-5px) translateX(-3px) rotate(-0.3deg); 
        opacity: 1;
    }
    75% { 
        transform: translateY(8px) translateX(7px) rotate(0.8deg); 
        opacity: 0.9;
    }
}

@keyframes landing-starFieldSlow {
    0%, 100% { 
        transform: translateY(0px) translateX(0px) scale(1); 
        opacity: 0.8;
    }
    33% { 
        transform: translateY(10px) translateX(-8px) scale(1.05); 
        opacity: 1;
    }
    66% { 
        transform: translateY(-12px) translateX(4px) scale(0.95); 
        opacity: 0.7;
    }
}

.landing-hero-content {
    text-align: center;
    color: white;
    z-index: 10;
    max-width: 800px;
    padding: 0 2rem;
    position: relative;
}

.landing-hero-logo {
    text-align: center;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.landing-hero-logo img {
    height: 400px;
    width: auto;
    max-width: 100%;
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

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

.landing-hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
    color: white !important;
}

.landing-cta-button {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.landing-cta-button:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    color: white;
    text-decoration: none;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.landing-about {
    padding: 6rem 0;
    background: #f8f9fa;
}

.landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.landing-about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.landing-about h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 2rem;
}

.landing-about p {
    font-size: 1rem !important;
    color: #4a5568;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* ==========================================================================
   RESOURCES SECTION (Projects Grid)
   ========================================================================== */
.landing-projects {
    padding: 6rem 0;
    background: #ffffff;
}

.landing-projects h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 3rem;
}

.landing-resources-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.landing-resource-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    display: flex;
    flex-direction: column;
}

.landing-resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #1a1a2e, #533483);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    z-index: 2;
}

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

.landing-resource-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.landing-resource-image {
    width: 100%;
    height: 200px;
    background-size: contain;  
    background-position: center;
    background-repeat: no-repeat;
    background-color: #f8f9fa;  
    position: relative;
}

.landing-resource-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.1), rgba(83, 52, 131, 0.1));
    transition: opacity 0.3s ease;
}

.landing-resource-card:hover .landing-resource-image::after {
    opacity: 0.7;
}

.landing-resource-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
}

.landing-resource-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    text-align: center;
    margin-bottom: 1.5rem;
}

.landing-project-link {
    display: inline-block;
    background: linear-gradient(135deg, #2d3748, #4a5568);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.landing-project-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.landing-project-link:hover::before {
    left: 100%;
}

.landing-project-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(45, 55, 72, 0.3);
    background: linear-gradient(135deg, #1a202c, #2d3748);
    border-color: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
}

/* ==========================================================================
   CONTRIBUTE SECTION
   ========================================================================== */
.landing-contribute {
    padding: 6rem 0;
    background: #f8f9fa;
}

.landing-contribute h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 2rem;
}

.landing-contribute p {
    font-size: 1rem !important;
    color: #4a5568;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* ==========================================================================
   NEWS SECTION
   ========================================================================== */
.landing-news {
    padding: 6rem 0;
    background: #ffffff;
}

.landing-news h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 3rem;
}

.landing-news-feed {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.landing-news-feed::-webkit-scrollbar {
    width: 8px;
}

.landing-news-feed::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.landing-news-feed::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 10px;
}

.landing-news-feed::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

.landing-news-feed-item {
    padding: 2rem;
    border-bottom: 1px solid #edf2f7;
    transition: background-color 0.3s ease;
}

.landing-news-feed-item:last-child {
    border-bottom: none;
}

.landing-news-feed-item:hover {
    background-color: #f8f9fa;
}

.landing-news-date {
    color: #8055bd;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.landing-news-content p {
    color: #4a5568;
    line-height: 1.6;
    margin: 0;
    text-align: justify;
    font-size: 1rem !important;
}

.landing-news-link {
    color: #8055bd;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.landing-news-link:hover {
    color: #6b46c1;
    text-decoration: underline;
}

/* ==========================================================================
   TEAM SECTION
   ========================================================================== */
.landing-team {
    padding: 6rem 0;
    background: #f8f9fa;
}

.landing-team h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 3rem;
}

.landing-team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    justify-items: center;
}

.landing-team-member {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    width: 240px;
}

.landing-team-member:hover {
    transform: translateY(-5px);
    text-decoration: none;
    color: inherit;
}

.landing-team-avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.landing-team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.landing-team-member h4 {
    color: #2d3748;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.landing-team-member p {
    color: #4a5568;
    font-size: 0.9rem;
    line-height: 1.5;
    text-align: center;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.landing-contact {
    padding: 6rem 0;
    background: #ffffff;
}

.landing-contact h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 2rem;
}

.landing-contact p {
    font-size: 1rem !important;
    color: #4a5568;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: center;
}

.landing-contact a {
    color: #8055bd;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.landing-contact a:hover {
    color: #6b46c1;
    text-decoration: underline;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.landing-footer {
    background: #2d3748;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.landing-footer p {
    color: #a0aec0;
    margin: 0;
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
.landing-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ==========================================================================
   MOBILE RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .landing-resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .landing-team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .landing-nav-container {
        padding: 0 1rem;
    }
    
    .landing-nav-links {
        display: none;
    }
    
    .landing-nav-toggle {
        display: flex;
    }
    
    .landing-hero-content {
        padding: 0 1rem;
    }
    
    .landing-hero-logo img {
        height: 300px;
    }
    
    .landing-container {
        padding: 0 1rem;
    }
    
    .landing-resources-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .landing-team-grid {
        grid-template-columns: 1fr;
    }
    
    .landing-team-member {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .landing-hero-logo img {
        height: 200px;
    }
    
    .landing-about h2,
    .landing-projects h2,
    .landing-contribute h2,
    .landing-news h2,
    .landing-team h2,
    .landing-contact h2 {
        font-size: 1.8rem;
    }
}