/* ===== GLOBAL STYLES & VARIABLES ===== */
:root {
    --bg-color: #1a1a2e;
    --sidebar-bg: #162447;
    --card-bg: #1f4068;
    --primary-accent: #1b77b7;
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
    --border-color: rgba(27, 119, 183, 0.3);
}

/* Ensure the page is allowed to scroll */
html, body {
    overflow-x: hidden;
    overflow-y: auto;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    line-height: 1.7;
}

h1, h2, h3 {
    font-weight: 600;
    color: #fff;
}

a {
    color: var(--primary-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #fff;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: 300px;
    background-color: var(--sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    border-right: 1px solid var(--border-color);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.profile-info {
    text-align: center;
    margin-bottom: 2rem;
}

.profile-picture-container {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    overflow: hidden;
    border: 4px solid var(--primary-accent);
}

.profile-picture-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-info h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.profile-info h2 {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

/* ===== NAVIGATION ===== */
.main-nav ul {
    list-style-type: none;
}

.main-nav .nav-link {
    display: block;
    padding: 0.75rem 1rem;
    margin: 0.5rem 0;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
    cursor: pointer;
}

.main-nav .nav-link i {
    margin-right: 1rem;
    width: 20px;
    text-align: center;
}

.main-nav .nav-link.active,
.main-nav .nav-link:hover {
    background-color: var(--primary-accent);
    color: #fff;
}

/* ===== CONTACT INFO ===== */
.contact-info {
    margin-top: auto;
    text-align: center;
}

.contact-info a {
    font-size: 1.5rem;
    margin: 0 0.75rem;
    color: var(--text-muted);
}

.contact-info a:hover {
    color: var(--primary-accent);
}


/* ===== MAIN CONTENT PANEL ===== */
.main-content {
    margin-left: 300px;
    padding: 3rem;
    width: calc(100% - 300px);
}

.content-section {
    scroll-margin-top: 4rem; 
    min-height: 50vh;
    margin-bottom: 4rem;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--primary-accent);
    padding-bottom: 0.5rem;
    display: inline-block;
}

/* ===== CARDS & GRIDS ===== */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.card h3 {
    color: var(--primary-accent);
    margin-bottom: 0.5rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Skills */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}
.skill-item {
    background-color: rgba(27, 119, 183, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
}

/* Projects */
.project-icon {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    margin-bottom: 1rem;
}
.project-role {
    font-style: italic;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.project-links a {
    font-weight: 600;
    display: inline-block;
    margin-top: 1rem;
}
.project-links i {
    margin-left: 0.5rem;
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 800px;
}
.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--border-color);
    top: 0;
    bottom: 0;
    left: 8px;
}
.timeline-item {
    position: relative;
    padding-left: 40px;
    margin-bottom: -1rem;
}
.timeline-dot {
    position: absolute;
    width: 21px;
    height: 21px;
    border-radius: 50%;
    background-color: var(--primary-accent);
    border: 4px solid var(--bg-color);
    top: 32px; /* Adjusted for better vertical alignment with text */
    left: -2px;
    z-index: 1;
}
.company {
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.timeline-content ul {
    padding-left: 1.2rem;
    color: var(--text-muted);
}

/* Education */
.institution {
    color: var(--text-muted);
    font-weight: 600;
}
.duration {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .sidebar {
        width: 260px;
    }
    .main-content {
        margin-left: 260px;
        width: calc(100% - 260px);
    }
    .profile-picture-container {
        width: 120px;
        height: 120px;
    }
    .profile-info h1 {
        font-size: 1.3rem;
    }
}

@media (max-width: 992px) {
    .sidebar {
        width: 250px;
    }
    .main-content {
        margin-left: 250px;
        width: calc(100% - 250px);
    }
}


/* ===== MOBILE OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }

    /* --- Sidebar becomes top header --- */
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem 1.5rem;
    }
    .sidebar-inner {
        height: auto;
    }

    /* --- Main content takes full width --- */
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 2rem 1.5rem;
    }

    /* --- Compact Profile & Nav --- */
    .profile-info {
        display: flex;
        align-items: center;
        text-align: left;
        margin-bottom: 1rem;
    }
    .profile-picture-container {
        width: 70px;
        height: 70px;
        margin: 0 1rem 0 0;
        flex-shrink: 0;
    }
    .profile-info h1 {
        font-size: 1.2rem;
        margin-bottom: 0;
    }
    .profile-info h2 {
        font-size: 0.9rem;
    }
    .main-nav ul {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 5px;
        margin-top: 1rem;
    }
    .main-nav .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
        margin: 0;
    }
    .main-nav .nav-link i {
        margin-right: 0.5rem;
    }

    /* --- Re-enable and style contact info --- */
    .contact-info {
        display: block;
        margin-top: 1.5rem;
        padding-top: 1rem;
        border-top: 1px solid var(--border-color);
    }
    .contact-info a {
        font-size: 1.4rem;
    }

    /* --- Adjust content typography and spacing --- */
    .section-title {
        font-size: 1.8rem;
    }
    .card {
        padding: 1.5rem;
    }
    .card h3 {
        font-size: 1.2rem;
    }
    .timeline-item .card .card-header {
        align-items: flex-start;
    }

    /* --- Adjust timeline for narrow view --- */
    .timeline::after {
        left: 5px;
    }
    .timeline-item {
        padding-left: 30px;
    }
    .timeline-dot {
        top: 24px; /* Re-align dot for mobile padding */
        left: -4px;
        width: 18px;
        height: 18px;
    }
}