/* Notion-style Portfolio CSS */

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

:root {
    /* Pink-themed color palette */
    --bg-primary: #D4B8B4;
    --bg-secondary: #E8D5D2;
    --bg-tertiary: #F2E9E7;
    --text-primary: #4A2C2A;
    --text-secondary: #6B4C47;
    --text-muted: #8B6F6A;
    --border-color: #C4A09C;
    --accent-color: #A0616A;
    --accent-hover: #8B4A54;
    --success-color: #7A5A47;
    --warning-color: #B8704A;
    --shadow: 0 1px 3px rgba(74, 44, 42, 0.15);
    --shadow-lg: 0 4px 12px rgba(74, 44, 42, 0.2);
    --radius: 6px;
    --radius-lg: 8px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: var(--font-size-base);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Hero Section */
.hero {
    margin-bottom: 1.25rem;
    padding: 1.5rem 0;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.profile-section {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.profile-avatar {
    flex-shrink: 0;
    position: relative;
    width: 6rem;
    height: 6rem;
}

.profile-image {
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    display: block;
}

.profile-image:hover {
    transform: scale(1.05);
    border-color: var(--accent-color);
}

.profile-fallback {
    font-size: 4rem;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 50%;
    display: none;
    width: 6rem;
    height: 6rem;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    left: 0;
}

.profile-avatar i {
    font-size: 4rem;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 50%;
    display: block;
    width: 6rem;
    height: 6rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.profile-title {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.profile-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.profile-link:hover {
    background: var(--bg-tertiary);
    color: var(--accent-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.hero-description {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-color);
}

.hero-description p {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    color: var(--text-primary);
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    /* keep tabs on a single row on desktop */
    flex-wrap: nowrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow-x: auto;
}

.nav-tab {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

/* Skills strip */
.skills-strip {
    margin-bottom: 0.75rem;
    padding: 0.25rem 0;
}

.nav-tab:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-tab.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Content Sections */
.content {
    min-height: 60vh;
}

.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

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

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.section-title i {
    color: var(--accent-color);
}

/* Timeline (Experience) */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

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

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--accent-color);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: var(--shadow);
}

.timeline-marker.current {
    background: var(--success-color);
    animation: pulse 2s infinite;
    box-shadow: 0 0 0 4px rgba(122, 90, 71, 0.3);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(122, 90, 71, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(122, 90, 71, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(122, 90, 71, 0);
    }
}

.current-role {
    background: linear-gradient(135deg, var(--success-color), var(--bg-tertiary));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.timeline-header {
    margin-bottom: 1rem;
}

.timeline-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.company {
    font-weight: 500;
    color: var(--accent-color);
    margin-right: 1rem;
}

.date {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.timeline-description ul {
    list-style: none;
    margin-bottom: 1rem;
}

.timeline-description li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

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

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

.project-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.project-card.featured {
    border: 2px solid var(--accent-color);
    background: var(--bg-tertiary);
}

.project-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.project-icon {
    font-size: 2rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.project-title-section {
    flex: 1;
}

.project-title-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.project-type {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.project-link {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: color 0.2s ease;
}

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

.project-description {
    margin-bottom: 1rem;
}

.project-description p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    margin: 1rem 0;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
}

.highlight-item i {
    color: var(--accent-color);
    flex-shrink: 0;
}

.project-list {
    margin: 1rem 0;
}

.project-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent-color);
    font-size: var(--font-size-sm);
}

.project-details {
    margin: 1rem 0;
}

.detail-section {
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.detail-section strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.detail-section ul {
    margin-left: 1rem;
}

.team-info {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
}

/* Tech Stack */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--accent-color);
    color: white;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    white-space: nowrap;
}

/* Education */
.education-grid {
    display: grid;
    gap: 2rem;
}

.education-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
}

.education-header {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.education-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.education-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.education-school {
    font-size: var(--font-size-lg);
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.education-details {
    display: flex;
    gap: 1rem;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.education-gpa {
    font-weight: 600;
    color: var(--success-color);
}

.relevant-courses h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.course-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.course-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

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

.certificate-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.certificate-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--accent-color);
}

.certificate-icon {
    font-size: 2rem;
    color: var(--accent-color);
    flex-shrink: 0;
}

.certificate-info h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.certificate-info p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Footer */
.footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .profile-section {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .profile-links {
        justify-content: center;
    }
    
    .nav-tabs {
        padding: 0.5rem;
        justify-content: flex-start;
    }
    
    .nav-tab {
        padding: 0.5rem 1rem;
        font-size: var(--font-size-xs);
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
    
    .project-highlights {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: 1rem;
    }
    
    .timeline-marker {
        left: -1.5rem;
    }
    
    .timeline::before {
        left: 0.25rem;
    }
    
    .education-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .education-details {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .profile-name {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-xl);
    }
    
    .timeline-content {
        padding: 1rem;
    }
    
    .project-card {
        padding: 1rem;
    }
    
    .education-card {
        padding: 1rem;
    }
}

/* AI Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    font-family: var(--font-family);
}

.chat-button {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: var(--accent-color);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.chat-button:hover {
    transform: scale(1.1);
    background: var(--accent-hover);
}

.chat-tooltip {
    position: absolute;
    right: 4.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--text-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

.chat-widget:hover .chat-tooltip {
    opacity: 1;
    right: 4rem;
}

.chat-window {
    position: absolute;
    bottom: 5rem;
    right: 0;
    width: 350px;
    height: 500px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.9);
    opacity: 0;
    pointer-events: none;
    transform-origin: bottom right;
    transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
    border: 1px solid var(--border-color);
}

.chat-window.active {
    transform: scale(1);
    opacity: 1;
    pointer-events: all;
}

.chat-header {
    background: var(--accent-color);
    color: white;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chat-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1.25rem;
}

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

.message {
    max-width: 80%;
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.message.user {
    align-self: flex-end;
    background: var(--accent-color);
    color: white;
    border-bottom-right-radius: 0.25rem;
}

.message.bot {
    align-self: flex-start;
    background: var(--bg-primary);
    color: var(--text-primary);
    border-bottom-left-radius: 0.25rem;
    border: 1px solid var(--border-color);
}

.chat-input-area {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.5rem;
    background: var(--bg-secondary);
}

.chat-input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    resize: none;
    height: 42px;
    max-height: 100px;
}

.chat-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.chat-send {
    background: var(--accent-color);
    color: white;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.chat-send:hover {
    background: var(--accent-hover);
}

.typing-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing 1s infinite;
    margin: 0 2px;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

@media (max-width: 480px) {
    .chat-window {
        width: calc(100vw - 2rem);
        bottom: 5.5rem;
        right: 1rem;
        height: 60vh;
    }
}