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

:root {
    /* Base Colors (Slate Theme) */
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.05);
    
    /* Domain Specific Colors */
    --color-multi: #d600ff;
    --color-data: #00f2ff;
    --color-elec: #ffcc00;
    --color-space: #3b82f6;
    
    /* Default Accent (Overridden by specific pages) */
    --accent-color: #ffffff;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    /* Subtle background glow */
    background-image: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.03) 0%, transparent 50%);
}

/* --- NAVIGATION --- */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

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

.nav-links { display: flex; gap: 30px; }

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: 0.3s;
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-color);
}

/* Underline animation for active link */
.nav-links a.active::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
}

/* --- HERO SECTION --- */
header {
    text-align: center;
    padding: 80px 20px 50px;
    animation: fadeIn 0.8s ease-out;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 15px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--accent-color);
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-size: 0.9rem;
    text-shadow: 0 0 20px rgba(0,0,0,0.5);
}

/* --- LAYOUT --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
    width: 100%;
    flex: 1;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

/* --- CARDS --- */
.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 35px;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Card Hover Effect */
.card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3), 
                0 0 0 1px var(--accent-color) inset;
}

/* Subtle gradient overlay on hover */
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);
    opacity: 0;
    transition: 0.4s;
}
.card:hover::before { opacity: 1; }

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 25px;
    flex-grow: 1;
}

/* --- TAGS --- */
.tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 50px;
    margin-right: 8px;
    transition: 0.3s;
}

.card:hover .tag {
    background: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
}

/* --- PORTAL GRID (Index Page) --- */
.portal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.portal-card {
    text-decoration: none;
    height: 220px;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.portal-card span {
    display: block;
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Specific Themes for Portal Cards */
.theme-multi { --accent-color: var(--color-multi); }
.theme-data { --accent-color: var(--color-data); }
.theme-elec { --accent-color: var(--color-elec); }
.theme-space { --accent-color: var(--color-space); }

.portal-card h3 { font-size: 1.8rem; margin: 0; }

/* --- CONTACT SECTION --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}
.contact-info { padding: 50px; background: rgba(0,0,0,0.2); }
.contact-form { padding: 50px; }

.info-item { display: flex; gap: 15px; margin-bottom: 25px; align-items: center; }
.icon-box { 
    width: 40px; height: 40px; 
    border-radius: 50%; 
    background: rgba(255,255,255,0.05);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 15px;
    background: #0f172a;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: #fff;
    margin-bottom: 20px;
    font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: var(--accent-color);
    color: #fff; /* Or black if accent is bright */
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}
.submit-btn:hover { filter: brightness(1.1); transform: translateY(-2px); }

/* --- FOOTER --- */
footer {
    text-align: center;
    padding: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: auto;
}

/* --- ANIMATION --- */
@keyframes fadeIn