/* E-ink Inspired Design System */
:root {
    /* E-ink Color Palette */
    --bg-primary: #FAF8F0;           /* Off-white/warm cream */
    --text-primary: #36454F;         /* Deep charcoal */
    --text-secondary: #5A6670;       /* Lighter charcoal */
    --text-tertiary: #7A8288;        /* Even lighter */
    
    /* Accent Colors (used sparingly) */
    --accent-cyan: #A0D2DB;          /* Subtle cyan */
    --accent-magenta: #C3A6C0;       /* Muted magenta */
    --accent-yellow: #E0C083;        /* Earthy yellow */
    --accent-green: #A7C7A1;         /* Soft green */
    --accent-orange: #E57C58;        /* Warm red-orange */
    
    /* Spacing and Typography */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.25rem;
    --radius-lg: 0.5rem;
    
    /* Shadows (subtle for e-ink feel) */
    --shadow-sm: 0 1px 2px 0 rgba(54, 69, 79, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(54, 69, 79, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(54, 69, 79, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    font-weight: 400;
}

/* Typography System */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background-color: var(--bg-primary);
    border-left: 1px solid var(--text-tertiary);
    z-index: 1000;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
}

.sidebar.active {
    right: 0;
}

.sidebar-content {
    padding: var(--spacing-2xl);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.sidebar-close {
    align-self: flex-end;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-md);
    transition: background-color 0.2s ease;
}

.sidebar-close:hover {
    background-color: var(--accent-cyan);
}

.sidebar-menu {
    list-style: none;
    margin-bottom: var(--spacing-2xl);
}

.sidebar-menu li {
    margin-bottom: var(--spacing-md);
}

.sidebar-link {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.sidebar-link:hover {
    background-color: var(--accent-cyan);
    padding-left: var(--spacing-lg);
}

.sidebar-contact {
    margin-top: auto;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--text-tertiary);
}

.sidebar-contact p {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.sidebar-contact a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

.sidebar-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.sidebar-social a {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--text-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.sidebar-social a:hover {
    background-color: var(--accent-magenta);
    border-color: var(--accent-magenta);
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(54, 69, 79, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Main Content */
.main-content {
    transition: margin-right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content.sidebar-open {
    margin-right: 400px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(250, 248, 240, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(54, 69, 79, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.menu-line {
    width: 1.5rem;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
}

.menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(0.25rem, 0.25rem);
}

.menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(0.25rem, -0.25rem);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    margin-top: 4rem;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-intro {
    margin-bottom: var(--spacing-2xl);
}

.hero-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.name-highlight {
    color: var(--accent-orange);
}

.hero-roles {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.role-prefix {
    font-weight: 400;
    display: inline-block;
}

.rotating-role {
    font-weight: 600;
    color: var(--accent-cyan);
    position: relative;
    display: inline-block;
    vertical-align: baseline;
}

.hero-passion {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    max-width: 800px;
    line-height: 1.6;
}

.passion-highlight {
    color: var(--accent-magenta);
    font-weight: 600;
}

.cta-button {
    background: none;
    border: 2px solid var(--text-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.cta-button:hover {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Sections */
.section {
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.section-content {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-divider {
    width: 4rem;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
    border-radius: var(--radius-sm);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-paragraph {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.text-highlight {
    color: var(--accent-orange);
    font-weight: 500;
}

.skills-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.25rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
}

.skill-item {
    padding: var(--spacing-md);
    background-color: rgba(160, 210, 219, 0.1);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 500;
    text-align: center;
    transition: all 0.2s ease;
}

.skill-item:hover {
    background-color: var(--accent-cyan);
    transform: translateY(-1px);
}

/* Experience Section */
.experience-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.experience-item {
    border-left: 3px solid var(--accent-green);
    padding-left: var(--spacing-xl);
    position: relative;
}

.experience-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 14px;
    height: 14px;
    background-color: var(--accent-green);
    border-radius: 50%;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.experience-role {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
}

.experience-period {
    background-color: var(--accent-yellow);
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

.experience-company {
    color: var(--accent-orange);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.experience-description {
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

.experience-achievements {
    list-style: none;
    padding-left: 0;
}

.experience-achievements li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.experience-achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
    font-weight: 600;
}

/* Projects Section */
.projects-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    border: 1px solid var(--text-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
    background-color: var(--bg-primary);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-magenta);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.project-title {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
    flex: 1;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
}

.project-link {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--text-tertiary);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s ease;
}

.project-link:hover {
    background-color: var(--accent-orange);
    border-color: var(--accent-orange);
    color: var(--bg-primary);
}

.project-description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    background-color: rgba(195, 166, 192, 0.1);
    color: var(--accent-magenta);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    border: 1px solid var(--accent-magenta);
}

/* Thoughts Section */
.thoughts-intro {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
    color: var(--text-secondary);
}

.thought-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.topic-item {
    padding: var(--spacing-xl);
    border: 1px solid var(--text-tertiary);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.topic-item:hover {
    border-color: var(--accent-green);
    transform: translateY(-2px);
}

.topic-title {
    color: var(--accent-green);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.topic-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Contact Section */
.contact-intro {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    border: 1px solid var(--text-tertiary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.contact-method:hover {
    background-color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    border-top: 1px solid var(--text-tertiary);
    padding: var(--spacing-xl);
    text-align: center;
}

.footer-content p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 350px;
        right: -350px;
    }
    
    .main-content.sidebar-open {
        margin-right: 350px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .projects-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        right: -100%;
    }
    
    .main-content.sidebar-open {
        margin-right: 0;
    }
    
    .hero {
        padding: var(--spacing-2xl) var(--spacing-md);
        margin-top: 3rem;
    }
    
    .section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .contact-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-method {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }
    
    .hero-roles {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .sidebar-content {
        padding: var(--spacing-xl);
    }
    
    .project-card,
    .topic-item {
        padding: var(--spacing-lg);
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Animation for Rotating Role */
.rotating-role {
    display: inline-block;
    min-width: 200px;
    text-align: left;
    vertical-align: baseline;
    line-height: 1.2;
    padding-bottom: 0.1em;
}

@keyframes typewriter {
    from { 
        width: 0; 
    }
    to { 
        width: 100%; 
    }
}

@keyframes blinkCursor {
    from, to { 
        border-color: transparent; 
    }
    50% { 
        border-color: var(--accent-cyan); 
    }
}

.rotating-role.typing {
    border-right: 2px solid var(--accent-cyan);
    animation: blinkCursor 1s infinite;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #FFFFFF;
        --text-primary: #000000;
        --text-secondary: #333333;
        --accent-cyan: #0066CC;
        --accent-magenta: #CC0066;
        --accent-orange: #CC6600;
    }
}

/* Print styles */
@media print {
    .header,
    .sidebar,
    .sidebar-overlay,
    .cta-button {
        display: none;
    }
    
    .main-content {
        margin-right: 0;
    }
    
    .section {
        page-break-inside: avoid;
    }
}