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

:root {
    /* Light Theme Colors - Calm Lavender Theme */
    --bg-color: #F3F4F6;
    --text-color: #1F2937;
    --accent-color: #7C3AED;
    --secondary-color: #06B6D4;
    --card-bg: #FEFEFE;
    --border-color: #E5E7EB;
    --shadow: rgba(0, 0, 0, 0.08);
    --nav-bg: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] {
    /* Dark Theme Colors */
    --bg-color: #0F172A;
    --text-color: #F1F5F9;
    --accent-color: #60A5FA;
    --secondary-color: #34D399;
    --card-bg: #0F172A;
    --border-color: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --nav-bg: rgba(15, 23, 42, 0.95);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

#theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

#theme-toggle:hover {
    background-color: var(--border-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, #E0E7FF 0%, #F3F4F6 50%, #FEFEFE 100%);
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 50%, #1e293b 100%);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero .titles {
    margin: 1rem 0;
}

.hero .title {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.hero .tagline {
    font-size: 1.3rem;
    margin: 2rem 0;
    color: var(--text-color);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #2563EB;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-outline:hover {
    background-color: var(--accent-color);
    color: white;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 10px 30px var(--shadow);
}

/* About Section */
.about {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-img {
    width: 100%;
    max-width: 400px;
    height: 350px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 8px 25px var(--shadow);
}

/* Skills Section */
.skills {
    padding: 4rem 0;
    background-color: var(--bg-color);
}

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

.skill-category {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background-color: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Projects Section */
.projects {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-color);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-description {
    font-size: 1.1rem;
    margin: 1rem 0;
}

.project-details {
    margin: 1.5rem 0;
}

.tech-stack, .key-features, .writing-sample {
    margin-bottom: 1rem;
}

.key-features ul {
    margin-left: 1.5rem;
}

.key-features li {
    margin-bottom: 0.5rem;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Writing Portfolio Section */
.writing {
    padding: 4rem 0;
    background-color: var(--bg-color);
}

.writing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.writing-category {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow);
}

.writing-cards {
    display: grid;
    gap: 1rem;
}

.writing-card {
    background-color: var(--bg-color);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
}

.writing-card h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.writing-card p {
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

/* Services Section */
.services {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.service-category {
    background-color: var(--bg-color);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow);
}

.service-cards {
    display: grid;
    gap: 1rem;
}

.service-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    border-left: 4px solid var(--accent-color);
}

.service-card h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    background-color: var(--bg-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow);
}

.contact-item h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.contact-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

.contact-form {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 14rem 1rem 2rem;
    }

    .hero-content {
        max-width: 100%;
    }

    .profile-img {
        width: 200px;
        height: 200px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .project-links,
    .contact-links {
        flex-direction: column;
    }

    .skills-grid,
    .projects-grid,
    .writing-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero .tagline {
        font-size: 1.1rem;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Print Styles */
@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
    }

    a, a:visited {
        text-decoration: underline;
    }

    .no-print {
        display: none;
    }
}

/* Mobile Navigation */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.mobile-nav-toggle:hover {
    color: var(--accent-color);
}

.mobile-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 1rem 2rem;
    box-shadow: 0 4px 12px var(--shadow);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--secondary-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 9999;
    display: none; /* Hidden by default */
    align-items: center;
    gap: 0.5rem;
    max-width: 400px;
}

.toast.show {
    display: flex; /* Show when active */
    transform: translateX(0);
    opacity: 1;
}

.toast.error {
    background: #dc2626;
}

.toast-icon {
    font-size: 1.2rem;
    font-weight: bold;
}

.toast-message {
    flex: 1;
    line-height: 1.4;
}

/* Loading state for form button */
.btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

.btn.loading::after {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.chatbot-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    font-family: 'Inter', sans-serif;
}

/* Toggle Button */
.chatbot-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
    transition: all 0.3s ease;
    position: relative;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(124, 58, 237, 0.5);
}

.chatbot-toggle .chat-icon,
.chatbot-toggle .close-icon {
    font-size: 24px;
    position: absolute;
    transition: all 0.3s ease;
}

.chatbot-toggle .close-icon {
    opacity: 0;
    transform: rotate(-90deg);
    color: white;
    font-size: 20px;
}

.chatbot-container.open .chatbot-toggle .chat-icon {
    opacity: 0;
    transform: rotate(90deg);
}

.chatbot-container.open .chatbot-toggle .close-icon {
    opacity: 1;
    transform: rotate(0deg);
}

/* Chat Window */
.chatbot-window {
    position: absolute;
    bottom: 75px;
    right: 0;
    width: 380px;
    max-width: calc(100vw - 48px);
    height: 520px;
    max-height: calc(100vh - 150px);
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s ease;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.chatbot-container.open .chatbot-window {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* Chat Header */
.chatbot-header {
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: white;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chatbot-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chatbot-avatar {
    font-size: 28px;
}

.chatbot-header h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.chatbot-status {
    font-size: 12px;
    opacity: 0.9;
}

.chatbot-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.2s ease;
}

.chatbot-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Messages Container */
.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--bg-color);
}

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

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

.chatbot-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

/* Chat Messages */
.chat-message {
    display: flex;
    gap: 10px;
    max-width: 90%;
    animation: messageSlide 0.3s ease;
}

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

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

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

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.message-content {
    background: var(--card-bg);
    padding: 12px 16px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    font-size: 14px;
    line-height: 1.5;
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: white;
    border: none;
}

.message-content p {
    margin: 0;
}

.message-content ul {
    margin: 8px 0;
    padding-left: 20px;
}

.message-content li {
    margin: 4px 0;
}

.message-content strong {
    color: var(--accent-color);
}

.user-message .message-content strong {
    color: white;
}

/* Quick Replies */
.chatbot-quick-replies {
    padding: 8px 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
}

.quick-reply {
    padding: 8px 16px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-color);
}

.quick-reply:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Input Container */
.chatbot-input-container {
    padding: 12px 16px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

.chatbot-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease;
    background: var(--bg-color);
    color: var(--text-color);
}

.chatbot-input:focus {
    border-color: var(--accent-color);
}

.chatbot-input::placeholder {
    color: var(--text-color);
    opacity: 0.5;
}

.chatbot-send {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.chatbot-send:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.chatbot-send svg {
    width: 18px;
    height: 18px;
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .chatbot-container {
        bottom: 16px;
        right: 16px;
    }
    
    .chatbot-toggle {
        width: 56px;
        height: 56px;
    }
    
    .chatbot-window {
        width: calc(100vw - 32px);
        height: calc(100vh - 120px);
        bottom: 70px;
        right: -8px;
    }
    
    .chatbot-quick-replies {
        padding: 8px 12px;
    }
    
    .quick-reply {
        padding: 6px 12px;
        font-size: 12px;
    }
}