:root {
    --color-bg-dark: #0A0D14;
    --color-bg-dark-rgb: 10,13,20;
    --color-bg-medium: #1A1F2E;
    --color-bg-medium-rgb: 26,31,46;
    --color-card-bg: rgba(26,31,46,0.5);

    --color-primary-accent: #4ADE80;
    --color-primary-accent-rgb: 74,222,128;

    --color-accent-emerald: #10B981;
    --color-accent-emerald-rgb: 16,185,129;
    --color-accent-amber: #F59E0B;
    --color-accent-amber-rgb: 245,158,11;
    --color-accent-slate: #64748B;
    --color-accent-slate-rgb: 100,116,139;

    --color-highlight: var(--color-accent-emerald);
    --color-highlight-rgb: var(--color-accent-emerald-rgb);

    --color-text-main: #E2E8F0;
    --color-text-main-rgb: 226,232,240;
    --color-text-muted: #94A3B8;
    --color-text-muted-rgb: 148,163,184;

    --color-terminal-prompt: var(--color-accent-amber);
    --color-terminal-command: var(--color-primary-accent);
    --color-terminal-keyword: var(--color-accent-emerald);
    --color-terminal-value: var(--color-accent-slate);
    --color-terminal-comment: var(--color-text-muted);
    --color-terminal-operator: var(--color-primary-accent);
    --color-terminal-special: var(--color-accent-emerald);
    --color-terminal-special-rgb: var(--color-accent-emerald-rgb);

    --font-main: 'JetBrains Mono', 'Fira Code', 'Share Tech Mono', monospace;
    --font-accent: 'JetBrains Mono', 'Fira Code', monospace;
    --font-title: 'JetBrains Mono', 'Fira Code', monospace;
}

body {
    background-color: var(--color-bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-main);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
    overflow-y: auto;
}

body::before {
    content: "";
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -3;
    background: radial-gradient(ellipse at center,
        rgba(var(--color-bg-medium-rgb), 0.05) 0%,
        rgba(var(--color-bg-dark-rgb), 0.1) 70%,
        rgba(var(--color-bg-dark-rgb), 0.2) 100%);
}

body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: linear-gradient(to bottom, rgba(var(--color-text-muted-rgb), 0.03) 1px, transparent 1px);
    background-size: 100% 3px;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.5;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

.animated-grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
}

.animated-grid-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image:
        linear-gradient(to right, rgba(var(--color-text-muted-rgb), 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(var(--color-text-muted-rgb), 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    transform-origin: center center;
}

.main-interface-wrapper {
    width: 100%;
    max-width: 1400px;
    padding: 1rem;
    position: relative;
    z-index: 1;
    margin-left: auto;
    margin-right: auto;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg-dark); }
::-webkit-scrollbar-thumb {
    background: var(--color-text-muted);
    border-radius: 4px;
    border: 1px solid var(--color-bg-dark);
    transition: background 0.2s ease-in-out;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-accent);
}

html {
    scrollbar-width: thin;
    scrollbar-color: var(--color-text-muted) var(--color-bg-dark);
}

.data-sector {
    padding: 1.5rem 0;
    position: relative;
}

@media (max-width: 900px) {
    .data-sector {
        content-visibility: auto;
        contain-intrinsic-size: 1000px;
    }
    
    #sector-about {
        content-visibility: auto;
        contain-intrinsic-size: 800px;
    }
}

#sector-landing {
    min-height: 95vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    z-index: 2;
}

#logo-main {
    width: clamp(180px, 30vw, 300px);
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 15px var(--color-primary-accent));
    position: relative;
}

#logo-main::after {
    content: "";
    position: absolute;
    top:0; left:0; width:100%; height:100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 250 250' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.5' numOctaves='1' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.07'/%3E%3C/svg%3E");
    pointer-events: none;
}

.landing-title {
    font-family: var(--font-title);
    font-weight: 500;
    font-size: clamp(3rem, 7vw, 5.5rem);
    color: var(--color-primary-accent);
    letter-spacing: -0.5px;
    margin-bottom: 1.5rem;
    position: relative;
    filter: drop-shadow(0 0 10px var(--color-primary-accent));
}



.landing-subtitle {
    font-family: var(--font-main);
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--color-text-main);
    font-weight: 400;
    letter-spacing: 0.5px;
    opacity: 0.8;
    margin-bottom: 2rem;
}

.recruitment-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, var(--color-primary-accent), var(--color-accent-emerald));
    color: var(--color-bg-dark);
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-family: var(--font-accent);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 8px 25px rgba(var(--color-primary-accent-rgb), 0.3);
    position: relative;
    overflow: hidden;
}

.recruitment-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.recruitment-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(var(--color-primary-accent-rgb), 0.4);
    border-color: var(--color-highlight);
}

.recruitment-btn:hover::before {
    left: 100%;
}

.recruitment-btn i {
    font-size: 1.2rem;
}

.recruitment-btn[href*="nitectf"] {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.recruitment-btn[href*="nitectf"]:hover {
    box-shadow: 0 12px 35px rgba(59, 130, 246, 0.4);
    border-color: #60a5fa;
}

@media (max-width: 900px) {
    .recruitment-btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
        gap: 0.5rem;
    }
    
    .recruitment-btn i {
        font-size: 1.1rem;
    }
}

.sector-heading {
    font-family: var(--font-title);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    color: var(--color-primary-accent);
    margin-top: 2.5rem;
    margin-bottom: 2.5rem;
    text-align: left;
    position: relative;
    padding-bottom: 0.5rem;
    font-weight: 500;
    letter-spacing: -0.5px;
}

.sector-heading::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0px;
    height: 3px;
    background-color: var(--color-primary-accent);
    filter: drop-shadow(0 0 3px var(--color-primary-accent));
    transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.sector-heading::after {
    width: 70px;
}

.team-section-title {
    font-family: var(--font-title);
    font-size: clamp(1.4rem, 3vw, 2rem);
    color: var(--color-highlight);
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 500;
    letter-spacing: -0.5px;
    position: relative;
}

.team-section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: var(--color-highlight);
    filter: drop-shadow(0 0 3px var(--color-highlight));
}

.card-grid {
    display: grid;
    gap: 2rem;
}

#subsystems-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

#team-grid {
    grid-template-columns: repeat(3, 1fr);
}

#board-members-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: 1400px;
    margin: 0 auto;
    justify-items: stretch;
    gap: 2rem;
}

#alumni-grid {
    grid-template-columns: repeat(4, 1fr);
}



@media (max-width: 900px) {
    #team-grid {
        grid-template-columns: 1fr;
    }
    
    #board-members-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 1000px;
        gap: 1.5rem;
    }
    
    #alumni-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .card-grid {
        gap: 1.5rem;
    }
    
    #team-grid,
    #board-members-grid,
    #alumni-grid {
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .perspective-container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 600px) {
    #board-members-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
        gap: 1rem;
    }
}