:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --bg-color: #ffffff;
    --light-bg: #f8f9fa;
    --text-color: #333333;
    --light-text: #666666;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    text-align: center;
    padding-top: 60px;
}

.initial-logo {
    width: 120px;
    height: 120px;
    background-color: var(--white);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 auto 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: fadeInUp 1s ease;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 5px;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.subtitle {
    font-size: 1.2rem;
    color: #bdc3c7;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease 0.6s backwards;
}

.contact-grid span {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Sections */
.section {
    padding: 6rem 0;
}

.light-bg {
    background-color: var(--light-bg);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
    color: var(--primary-color);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
}

/* About Content */
.about-content p {
    font-size: 1.1rem;
    color: var(--light-text);
    max-width: 800px;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid #ddd;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: -2.6rem;
    top: 0.5rem;
    width: 16px;
    height: 16px;
    background-color: var(--accent-color);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.2);
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.timeline-content ul {
    list-style: none;
}

.timeline-content li {
    margin-bottom: 0.8rem;
    position: relative;
    padding-left: 1.5rem;
    color: var(--light-text);
}

.timeline-content li::before {
    content: 'o';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Education Cards */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.edu-card {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
    border-left: 5px solid var(--primary-color);
}

.edu-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.edu-year {
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

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

/* Skills list */
.skills-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
}

.skills-column {
    flex: 1;
    min-width: 250px;
}

.skills-list {
    list-style: none;
}

.skills-list li {
    background-color: var(--white);
    margin-bottom: 0.8rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    border-left: 3px solid var(--accent-color);
    transition: var(--transition);
}

.skills-list li:hover {
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateX(10px);
}

/* Optional section */
.optional-content ul {
    list-style: none;
    padding: 0;
}

.optional-content li {
    background-color: var(--white);
    margin-bottom: 0.8rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    border-left: 3px solid var(--primary-color);
    color: var(--light-text);
    transition: var(--transition);
}

.optional-content li:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

/* Footer */
footer {
    padding: 4rem 0;
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Reveal effect */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .nav-links {
        display: none;
    }
}

/* ===================== */
/* CHATBOT STYLES BELOW  */
/* ===================== */

.chatbot-toggle-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #2980b9);
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 25px rgba(52, 152, 219, 0.4);
    z-index: 999;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: pulseChatbot 2s infinite;
}

.chatbot-toggle-btn:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 30px rgba(52, 152, 219, 0.6);
}

.chatbot-toggle-btn svg {
    transition: transform 0.3s ease;
}

.chatbot-toggle-btn:active {
    transform: scale(0.9);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: #e74c3c;
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--white);
    animation: shakeBadge 1s ease-in-out infinite alternate;
}

.chatbot-window {
    position: fixed;
    bottom: 6rem;
    right: 2rem;
    width: 380px;
    height: 520px;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.075, 0.82, 0.165, 1);
    transform-origin: bottom right;
}

.chatbot-window.hidden {
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8) translateY(40px);
    pointer-events: none;
}

.chatbot-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.chatbot-profile {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.chatbot-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--white);
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.chatbot-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: 0.5px;
}

.chatbot-info .status {
    font-size: 0.75rem;
    color: #bdc3c7;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

.status-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: #2ecc71;
    border-radius: 50%;
    animation: blinkStatus 1.5s infinite;
}

.chatbot-close-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.8rem;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.chatbot-close-btn:hover {
    color: var(--white);
    transform: rotate(90deg);
}

.chatbot-messages {
    flex: 1;
    padding: 1.2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background-color: rgba(248, 249, 250, 0.5);
    scroll-behavior: smooth;
}

.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

.message {
    max-width: 80%;
    display: flex;
    flex-direction: column;
    animation: messageFadeIn 0.3s ease forwards;
}

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

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

.message-content {
    padding: 0.8rem 1rem;
    border-radius: 14px;
    font-size: 0.9rem;
    line-height: 1.5;
    word-break: break-word;
}

.message.user .message-content {
    background-color: var(--accent-color);
    color: var(--white);
    border-bottom-right-radius: 2px;
    box-shadow: 0 3px 10px rgba(52, 152, 219, 0.2);
}

.message.assistant .message-content {
    background-color: var(--white);
    color: var(--text-color);
    border-bottom-left-radius: 2px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.message-time {
    font-size: 0.7rem;
    color: var(--light-text);
    margin-top: 4px;
    padding: 0 4px;
}

.message.user .message-time {
    align-self: flex-end;
}

.message.assistant .message-time {
    align-self: flex-start;
}

.chatbot-input-area {
    padding: 1rem;
    background-color: var(--white);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    gap: 0.6rem;
    align-items: center;
}

.chatbot-input-area input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1.5px solid #e2e8f0;
    border-radius: 25px;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

.chatbot-input-area input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.chatbot-input-area button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.chatbot-input-area button:hover {
    background-color: #2980b9;
    transform: scale(1.05);
}

.chatbot-input-area button:active {
    transform: scale(0.95);
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background-color: #94a3b8;
    border-radius: 50%;
    display: inline-block;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes pulseChatbot {
    0% { box-shadow: 0 5px 25px rgba(52, 152, 219, 0.4); }
    50% { box-shadow: 0 5px 30px rgba(52, 152, 219, 0.7); }
    100% { box-shadow: 0 5px 25px rgba(52, 152, 219, 0.4); }
}

@keyframes shakeBadge {
    0% { transform: translateY(0); }
    100% { transform: translateY(-4px); }
}

@keyframes blinkStatus {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

@keyframes messageFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typingBounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

@media (max-width: 480px) {
    .chatbot-toggle-btn {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }

    .chatbot-window {
        bottom: 0;
        right: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
        z-index: 10000;
    }

    .chatbot-window.hidden {
        transform: translateY(100%);
        opacity: 0;
        visibility: hidden;
    }
}

.chatbot-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.5rem 0;
    margin-top: 0.2rem;
    animation: messageFadeIn 0.3s ease forwards;
}

.suggestion-btn {
    background-color: var(--white);
    border: 1.5px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(52, 152, 219, 0.08);
}

.suggestion-btn:hover {
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.2);
}

.suggestion-btn:active {
    transform: translateY(0);
}