/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #1a1a1a;
    --sidebar-bg: #2b2b2b;
    --primary-blue: #3b8ed0;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #444;
    --card-bg: #2b2b2b;
    --success-green: #4ade80;
    --error-red: #f87171;
}

.light-mode {
    --bg-dark: #f5f5f5;
    --sidebar-bg: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --card-bg: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
    border-right: 1px solid var(--border-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
    z-index: 1000;
}

.theme-toggle-container {
    position: absolute;
    top: 20px;
    right: 20px;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.theme-toggle:hover {
    color: var(--primary-blue);
}

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    align-items: center;
    justify-content: center;
}

.profile {
    text-align: center;
    margin-bottom: 30px;
}

.profile-pic {
    width: 100px;
    height: 100px;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), #5ca3d8);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.profile-pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.profile-pic i {
    font-size: 50px;
    color: white;
}

.profile h2 {
    font-size: 20px;
    margin-bottom: 5px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Navigation */
.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-size: 15px;
}

.nav-item:hover {
    background-color: rgba(59, 142, 208, 0.1);
    color: var(--primary-blue);
}

.nav-item.active {
    background-color: var(--primary-blue);
    color: white;
}

.nav-item i {
    width: 20px;
    text-align: center;
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.social-links a {
    color: var(--text-secondary);
    font-size: 20px;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-blue);
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 40px 60px;
}

.page {
    display: none;
    animation: fadeIn 0.5s ease;
}

.page.active {
    display: block;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page h1 {
    font-size: 36px;
    margin-bottom: 30px;
    color: var(--text-primary);
    border-bottom: 3px solid var(--primary-blue);
    padding-bottom: 10px;
    display: inline-block;
}

/* Welcome Header */
.welcome-header {
    text-align: center;
    margin-bottom: 40px;
}

.welcome-header h1 {
    font-size: 42px;
    margin-bottom: 10px;
    border: none;
    display: block;
}

.welcome-underline {
    width: 60px;
    height: 3px;
    background-color: var(--primary-blue);
    margin: 0 auto;
}

.welcome-message {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
    max-width: 700px;
}

.avatar-small {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), #5ca3d8);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.avatar-small i {
    font-size: 28px;
    color: white;
}

.greeting-text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

/* Buttons */
.cta-buttons {
    display: flex;
    gap: 15px;
}

.btn-primary,
.btn-secondary {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 142, 208, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: rgba(59, 142, 208, 0.1);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.project-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: var(--primary-blue);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.project-icon {
    font-size: 30px;
    color: var(--primary-blue);
}

.project-header h3 {
    font-size: 22px;
}

.project-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    background-color: rgba(59, 142, 208, 0.2);
    color: var(--primary-blue);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 13px;
}

.project-links {
    display: flex;
    gap: 15px;
}

.project-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: var(--primary-blue-hover);
}

/* Skills Page */
.skills-container {
    display: grid;
    gap: 25px;
}

.skill-category {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.skill-category h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.skill-category h3 i {
    color: var(--primary-blue);
    margin-right: 10px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    background-color: rgba(59, 142, 208, 0.1);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--primary-blue);
    font-size: 14px;
}

/* Experience Timeline */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-blue);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-dot {
    position: absolute;
    left: -46px;
    top: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--primary-blue);
    border: 3px solid var(--bg-dark);
}

.timeline-content {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.timeline-content h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.company {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 5px;
}

.duration {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 15px;
}

.timeline-content ul {
    padding-left: 20px;
    color: var(--text-secondary);
}

.timeline-content li {
    margin-bottom: 8px;
}

/* Chat Assistant */
.chat-container {
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    display: flex;
    gap: 12px;
    max-width: 80%;
}

.bot-message {
    align-self: flex-start;
}

.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background-color: #555;
}

.message-content {
    background-color: rgba(59, 142, 208, 0.1);
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--primary-blue);
}

.user-message .message-content {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
}

.chat-input-container {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

#chatInput {
    flex: 1;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    padding: 12px 20px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}

#chatInput:focus {
    border-color: var(--primary-blue);
}

.send-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-blue);
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.send-btn:hover {
    background-color: var(--primary-blue-hover);
    transform: scale(1.05);
}

/* About Page */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.about-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.about-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.about-card h3 i {
    color: var(--primary-blue);
    margin-right: 10px;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Awards List */
.awards-list {
    list-style: none;
    padding: 0;
}

.awards-list li {
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.awards-list strong {
    color: var(--primary-blue);
    display: block;
    margin-bottom: 2px;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--sidebar-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 5px;
}

.timeline-content {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.timeline-content h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.company {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 5px;
}

.duration {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 15px;
}

.timeline-content ul {
    padding-left: 20px;
    color: var(--text-secondary);
}

.timeline-content li {
    margin-bottom: 8px;
}

/* Chat Assistant */
.chat-container {
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    display: flex;
    gap: 12px;
    max-width: 80%;
}

.bot-message {
    align-self: flex-start;
}

.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background-color: #555;
}

.message-content {
    background-color: rgba(59, 142, 208, 0.1);
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--primary-blue);
}

.user-message .message-content {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
}

.chat-input-container {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

#chatInput {
    flex: 1;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    padding: 12px 20px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}

#chatInput:focus {
    border-color: var(--primary-blue);
}

.send-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-blue);
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.send-btn:hover {
    background-color: var(--primary-blue-hover);
    transform: scale(1.05);
}

/* About Page */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.about-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.about-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.about-card h3 i {
    color: var(--primary-blue);
    margin-right: 10px;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Awards List */
.awards-list {
    list-style: none;
    padding: 0;
}

.awards-list li {
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.awards-list strong {
    color: var(--primary-blue);
    display: block;
    margin-bottom: 2px;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--sidebar-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue-hover);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: 250px;
        transform: translateX(-100%);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        padding: 100px 20px 20px;
        /* Top padding for mobile menu button */
        width: 100%;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .welcome-header h1 {
        font-size: 32px;
    }

    .welcome-message {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}