:root {
    --quantum-blue: #1a237e;
    --quantum-light-blue: #3949ab;
    --accent-purple: #7c4dff;
    --background-color: #ffffff;
    --text-color: #333333;
    --light-gray: #f8f9fa;
    --primary-color: #3f51b5;
    --secondary-color: #5c6bc0;
    --accent-color: #7986cb;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem 2rem;
}

header {
    margin-bottom: 2rem;
    padding: 1rem 0;
    background: linear-gradient(to bottom, #ffffff, var(--light-gray));
    border-bottom: 3px solid var(--quantum-blue);
    position: relative;
    z-index: 10;
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.institute-logo, .ministry-logo {
    height: 100px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.header-content {
    flex: 1;
    text-align: center;
    max-width: 800px;
}

h1 {
    color: var(--quantum-blue);
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.mission-info {
    color: var(--quantum-light-blue);
}

.mission-info p {
    margin: 0.2rem 0;
    font-size: 1.1rem;
    font-weight: 500;
}

.mission-info p:first-child {
    color: var(--accent-purple);
    font-size: 1.2rem;
}

/* Navigation styles */
.main-nav {
    margin-top: 1rem;
    background-color: var(--quantum-blue);
    padding: 0.5rem;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60px;
}

.main-nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 3rem;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.main-nav a:hover {
    background-color: var(--quantum-light-blue);
}

.main-nav a.active {
    background-color: var(--accent-purple);
}

h2 {
    color: var(--quantum-blue);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

h3 {
    color: var(--quantum-blue);
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

section {
    margin-bottom: 3rem;
}

.description p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Bloch Sphere Container */
#bloch-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 60vh;
    margin: 2rem auto;
    background: rgba(248, 249, 250, 0.5);
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    width: 60vh;
    max-width: 90%;
}

#bloch-container canvas {
    border-radius: 8px;
    cursor: grab;
    width: 100%;
    height: 100%;
}

#bloch-container canvas:active {
    cursor: grabbing;
}

/* --- Research Map Styles --- */
.graph-container {
    width: 100%;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    background: var(--light-gray);
    border-radius: 8px;
    margin-bottom: 2rem;
}

#info-box {
    position: absolute;
    background: white;
    border-radius: 10px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.3);
    padding: 15px;
    display: none;
    width: 220px;
    text-align: center;
    transform: translate(-50%, -120%);
    z-index: 20; /* Ensure it's above graph */
}

#info-box.visible {
    display: block;
}

.timeline {
    text-align: center;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 8px;
}

.timeline-events button {
    margin: 5px;
    padding: 10px 15px;
    border: none;
    background-color: var(--quantum-blue);
    color: white;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.timeline-events button:hover {
    background-color: var(--quantum-light-blue);
}

#timeline-details {
    margin-top: 1.5rem;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--quantum-blue);
}

/* --- End Research Map Styles --- */

/* Quantum Section Styling */
.quantum-section {
    padding: 2rem;
    text-align: center;
    max-width: 800px;
    margin: 2rem auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: 0.3s ease-in-out;
}

.quantum-section:hover {
    transform: scale(1.02);
    box-shadow: 0 0 15px rgba(124, 77, 255, 0.3);
}

.quantum-section h2 {
    color: var(--quantum-blue);
    font-size: 1.6rem;
    margin-bottom: 1rem;
    transition: 0.3s;
}

.quantum-section p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-color);
}

/* Floating Qubit Info */
.qubit-info {
    position: absolute;
    display: none;
    background: rgba(255, 255, 255, 0.98);
    color: black;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    min-width: 160px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
    pointer-events: none;
    opacity: 0;
    z-index: 1000;
}

.close-btn {
    position: absolute;
    top: 5px;
    right: 10px;
    font-size: 18px;
    cursor: pointer;
    color: var(--quantum-blue);
}

.note {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: #6c757d;
    text-align: center;
    font-style: italic;
}

.links {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.link-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1rem;
}

.resource-link {
    display: flex;
    align-items: center;
    padding: 0.8rem 1.2rem;
    background-color: var(--light-gray);
    color: var(--quantum-blue);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.resource-link:hover {
    background-color: var(--accent-purple);
    color: white;
}

.link-icon {
    margin-right: 10px;
}

footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--light-gray);
    color: #6c757d;
    font-size: 0.9rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
}

@media screen and (max-width: 1024px) {
    .header-main {
        flex-direction: column;
        gap: 1rem;
    }

    .header-content {
        order: 2;
    }

    .institute-logo {
        order: 1;
    }

    .ministry-logo {
        order: 3;
    }

    h1 {
        font-size: 1.8rem;
    }

    .mission-info p {
        font-size: 1rem;
    }

    .mission-info p:first-child {
        font-size: 1.1rem;
    }
}

@media screen and (max-width: 768px) {
    .container {
        padding: 0.5rem;
    }

    /* Reduce map height on mobile */
    .graph-container {
        height: 400px;
    }

    .main-nav {
        position: relative;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .menu-toggle {
        display: block;
        z-index: 1001;
    }

    .main-nav ul {
        position: absolute;
        top: 100%;
        right: 0;
        background-color: var(--quantum-blue);
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 1rem 0;
        box-shadow: 0 8px 16px rgba(0,0,0,0.2);
        opacity: 0;
        transform: scale(0.98) translateY(-10px);
        visibility: hidden;
        transition: opacity 0.25s ease-out, transform 0.25s ease-out, visibility 0.25s;
    }

    .main-nav ul.show {
        opacity: 1;
        transform: scale(1) translateY(0);
        visibility: visible;
    }

    .main-nav ul li {
        width: 100%;
        text-align: center;
    }

    .main-nav ul li a {
        padding: 1rem;
        border-radius: 0;
    }

    .institute-logo, .ministry-logo {
        height: 80px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }

    #bloch-container {
        height: 50vh;
    }
    
    .link-container {
        flex-direction: column;
        gap: 1rem;
    }
}