/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Lato', 'Roboto', sans-serif; /* Updated font-family */
}

/* Design System - Core variables */
:root {
    /* Matte color palette */
    --primary: #5B6B8C;         /* Matte blue */
    --primary-light: #8494B2;
    --surface: #FFFFFF;
    --white: #FFFFFF;
    --background: #F4F6F8;
    --text-primary: #2C3138;
    --text-secondary: #666D75;
    --accent: #C17C74;          /* Matte rose */
    --success: #8ee0ca;         /* Matte green */
    --previous: #d6e536;        /* Matte yellow */
    --warning: #E2B33C;         /* Matte yellow */
    --error: #B95F5F;           /* Matte red */
    --section-divide: #E8ECF0;
    --elevation-1: 0 2px 4px rgba(45, 54, 67, 0.08);
    --elevation-2: 0 4px 8px rgba(45, 54, 67, 0.12);
    --font-heading: 'Noto Serif Display', serif;
    --font-primary: 'Lato', 'Prata', serif;
    --font-hero: 'Boldonse', 'Poppins', sans-serif;
    --font-secondary: 'Mulish', sans-serif;

    /* Light Mode Colors (default) */
    --bg-primary: #F4F6F8;
    --bg-surface: #FFFFFF;
    --text-primary: #2C3138;
    --text-secondary: #666D75;
    --border-color: #E8ECF0;
    --card-shadow: 0 2px 4px rgba(45, 54, 67, 0.08);

    /* Material Design 3 color tokens */
    --md-primary: #006495;
    --md-on-primary: #ffffff;
    --md-primary-container: #cde5ff;
    --md-on-primary-container: #001e31;
    --md-secondary: #50606f;
    --md-on-secondary: #ffffff;
    --md-secondary-container: #d3e5f5;
    --md-on-secondary-container: #0c1d29;
    --md-surface: #fdfcff;
    --md-surface-dim: #f8f8fc;
    --md-surface-container: #f3f3f7;
    --md-surface-bright: #fdfcff;
    
    /* Material elevation tokens */
    --md-elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.30);
    --md-elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.30);
    --md-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.15), 0px 1px 3px 0px rgba(0, 0, 0, 0.30);

    /* Material shape tokens */
    --md-shape-corner-extra-small: 4px;
    --md-shape-corner-small: 8px;
    --md-shape-corner-medium: 12px;
    --md-shape-corner-large: 16px;
    --md-shape-corner-extra-large: 28px;
}

/* Dark theme overrides */
[data-theme="dark"] {
    --bg-primary: #1A1C1E;
    --bg-surface: #2C2E30;
    --text-primary: #E8ECF0;
    --text-secondary: #B2B5B9;
    --border-color: #3A3D40;
    --card-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);

    --md-primary: #95ccff;
    --md-on-primary: #003351;
    --md-primary-container: #004b73;
    --md-on-primary-container: #cde5ff;
    --md-secondary: #b7c9d9;
    --md-on-secondary: #22323f;
    --md-secondary-container: #384956;
    --md-on-secondary-container: #d3e5f5;
    --md-surface: #1a1c1e;
    --md-surface-dim: #121316;
    --md-surface-container: #1d1f21;
    --md-surface-bright: #2a2c2f;
}

/* Core animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

@keyframes cursorEffect {
    0% { transform: scale(0); opacity: 1; }
    100% { transform: scale(15); opacity: 0; }
}

@keyframes moveBackground {
    from { background-position: 0 0; }
    to { background-position: 100px 100px; }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Layout components */
.section {
    position: relative;
    padding: 80px 0;
    border-bottom: 1px solid var(--section-divide);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero section styling */
.hero {
    background: linear-gradient(135deg, #2A2E35 0%, #1E1E24 100%);
    position: relative;
    overflow: hidden;
    padding: 140px 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg,
        rgba(255, 255, 255, 0.05) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0.05) 75%,
        transparent 75%,
        transparent
    );
    background-size: 100px 100px;
    animation: moveBackground 15s linear infinite;
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-name {
    font-family: var(--font-hero);
    margin-bottom: 1rem;
}

.hero-name .first-name {
    font-family: 'DM Sans', 'Roboto', sans-serif;
    font-weight: 1000;
    font-size: 4rem;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #64B6AC, #C0FDFB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.hero-name .last-name {
    font-family: 'DM Sans', 'Roboto', sans-serif;
    font-weight: 100;
    font-size: 4rem;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #64B6AC, #C0FDFB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.hero-title {
    font-family: var(--font-secondary);
    color: #ffffff;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 500;
    letter-spacing: 1px;
}

.hero p {
    color: #B2B2B2;
    font-size: 1.2rem;
}

/* Card components */
.service-card {
    background: var(--surface);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--elevation-1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 4px solid var(--primary);
    border: none;
    background-color: var(--bg-surface);
    box-shadow: var(--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
    box-shadow: var(--md-elevation-2);
    animation: pulse 1s infinite;
    cursor: pointer;
}

.project-card {
    background: var(--surface);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--elevation-1);
    border-top: 4px solid var(--primary);
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--bg-surface);
    box-shadow: var (--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
    box-shadow: var(--md-elevation-2);
    animation: pulse 1s infinite;
    cursor: pointer;
}

.cert-item, .edu-item {
    background: var(--surface);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: var(--elevation-1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--bg-surface);
    box-shadow: var(--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.cert-item:hover, .edu-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
    box-shadow: var(--md-elevation-2);
}

/* Timeline component */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: -2px;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(180deg, var(--accent) 0%, var(--primary-light) 100%);
    border-radius: 2px;
    background: var(--border-color);
}

.timeline-item {
    margin-bottom: 40px;
    padding: 20px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--elevation-1);
    border-left: 4px solid var(--accent);
    margin-left: 20px;
    position: relative;
    animation: slideIn 0.6s ease-out forwards;
    opacity: 0;
    background-color: var(--bg-surface);
    box-shadow: var(--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-item.current {
    border-left: 4px solid var(--success);
}

.timeline-item.previous {
    border-left: 4px solid var(--previous);
}

.timeline-item.current::before {
    background: var(--success);
}

.timeline-item.previous::before {
    background: var(--previous);
}

.timeline-item:nth-child(1) { animation-delay: 0.2s; }
.timeline-item:nth-child(2) { animation-delay: 0.4s; }
.timeline-item:nth-child(3) { animation-delay: 0.6s; }

.timeline-item h3 {
    font-family: var(--font-heading);
}

.project-branch {
    margin: 20px 0;
    padding-left: 20px;
    border-left: 2px dashed var(--primary-light);
    position: relative;
}

.project-branch::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-light);
}

.project-branch h5 {
    font-family: var(--font-heading);
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.project-branch ul {
    margin-left: 20px;
}

.project-branch li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-family: var(--font-primary);
}

.timeline-item h4 {
    color: var(--primary);
    margin: 5px 0;
    font-family: var(--font-secondary);
    font-weight: 500;
}

.duration {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
    font-family: var(--font-secondary);
}

/* Tech stack visualization */
.tech-icons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.tech-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    transition: transform 0.3s ease;
    filter: grayscale(20%);
}

.tech-icon:hover {
    transform: scale(1.2);
    filter: grayscale(0%);
}

.project-card:hover .tech-icon {
    animation: bounce 0.5s ease infinite;
}

.tech-icons i {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.tech-icons i:hover {
    transform: scale(1.2);
    color: var(--primary);
}

.project-card:hover .tech-icons i {
    animation: bounce 0.5s ease infinite;
}

/* Interactive elements */
.contact-button {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 24px !important;
    border-radius: var(--md-shape-corner-large);
    background: var(--md-primary);
    color: var(--md-on-primary) !important;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0.1px;
    transition: all 280ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--md-elevation-1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-button:hover {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container) !important;
    box-shadow: var(--md-elevation-2);
}

.contact-button:active {
    transform: scale(0.98);
}

.cursor-effect {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.3;
    pointer-events: none;
    z-index: 1;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background: var(--md-surface-container);
    color: var(--md-on-surface);
    box-shadow: var(--md-elevation-1);
    transition: background 280ms cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle i {
    font-size: 20px;
    color: var(--text-primary);
}

/* Media queries for responsive design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .services-grid,
    .project-grid,
    .credentials-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-name .first-name,
    .hero-name .last-name {
        font-size: 3rem;
    }
}

/* Helper classes */
.loading {
    animation: shimmer 1s linear infinite;
    background: linear-gradient(to right, #f6f7f8 8%, #edeef1 18%, #f6f7f8 33%);
    background-size: 800px 104px;
}

/* Section Dividers */
.section {
    position: relative;
    padding: 80px 0;
    border-bottom: 1px solid var(--section-divide);
}

/* Global Styles */
body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    background-color: var(--background);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2A2E35 0%, #1E1E24 100%);
    position: relative;
    overflow: hidden;
    padding: 140px 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg,
        rgba(255, 255, 255, 0.05) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0.05) 75%,
        transparent 75%,
        transparent
    );
    background-size: 100px 100px;
    animation: moveBackground 15s linear infinite;
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-name {
    font-family: var(--font-hero);
    margin-bottom: 1rem;
}

.hero-name .first-name {
    font-family: 'DM Sans', 'Roboto', sans-serif;
    font-weight: 1000;
    font-size: 4rem;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #64B6AC, #C0FDFB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.hero-name .last-name {
    font-family: 'DM Sans', 'Roboto', sans-serif;
    font-weight: 100;
    font-size: 4rem;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #64B6AC, #C0FDFB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.hero-title {
    font-family: var(--font-secondary);
    color: #ffffff;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 500;
    letter-spacing: 1px;
}

.hero p {
    color: #B2B2B2;
    font-size: 1.2rem;
}

/* Expertise Section */
.expertise .services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background: var(--surface);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--elevation-1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 4px solid var(--primary);
    border: none;
    background-color: var(--bg-surface);
    box-shadow: var(--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
    box-shadow: var(--md-elevation-2);
    animation: pulse 1s infinite;
    cursor: pointer;
}

.service-card i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

/* Enhanced Timeline Styles */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: -2px;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(180deg, var(--accent) 0%, var(--primary-light) 100%);
    border-radius: 2px;
    background: var(--border-color);
}

.timeline-item {
    margin-bottom: 40px;
    padding: 20px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--elevation-1);
    border-left: 4px solid var(--accent);
    margin-left: 20px;
    position: relative;
    animation: slideIn 0.6s ease-out forwards;
    opacity: 0;
    background-color: var(--bg-surface);
    box-shadow: var(--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-item.current {
    border-left: 4px solid var(--success);
}

.timeline-item.previous {
    border-left: 4px solid var(--previous);
}

.timeline-item.current::before {
    background: var(--success);
}

.timeline-item.previous::before {
    background: var(--previous);
}

.timeline-item:nth-child(1) { animation-delay: 0.2s; }
.timeline-item:nth-child(2) { animation-delay: 0.4s; }
.timeline-item:nth-child(3) { animation-delay: 0.6s; }

.timeline-item h3 {
    font-family: var(--font-heading);
}

.project-branch {
    margin: 20px 0;
    padding-left: 20px;
    border-left: 2px dashed var(--primary-light);
    position: relative;
}

.project-branch::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-light);
}

.project-branch h5 {
    font-family: var(--font-heading);
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.project-branch ul {
    margin-left: 20px;
}

.project-branch li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-family: var(--font-primary);
}

.timeline-item h4 {
    color: var(--primary);
    margin: 5px 0;
    font-family: var(--font-secondary);
    font-weight: 500;
}

.duration {
    color: var (--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
    font-family: var(--font-secondary);
}

/* Projects Section */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.project-card {
    background: var(--surface);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--elevation-1);
    border-top: 4px solid var(--primary);
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--bg-surface);
    box-shadow: var (--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
    box-shadow: var(--md-elevation-2);
    animation: pulse 1s infinite;
    cursor: pointer;
}

.tech-stack {
    margin-top: 15px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.tech-icons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.tech-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    transition: transform 0.3s ease;
    filter: grayscale(20%);
}

.tech-icon:hover {
    transform: scale(1.2);
    filter: grayscale(0%);
}

.project-card:hover .tech-icon {
    animation: bounce 0.5s ease infinite;
}

.tech-icons i {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.tech-icons i:hover {
    transform: scale(1.2);
    color: var(--primary);
}

.project-card:hover .tech-icons i {
    animation: bounce 0.5s ease infinite;
}

/* Credentials Section */
.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.cert-item, .edu-item {
    background: var(--surface);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: var(--elevation-1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--bg-surface);
    box-shadow: var(--card-shadow);
    border-color: var(--border-color);
    background: var(--md-surface-container);
    border-radius: var(--md-shape-corner-medium);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.cert-item:hover, .edu-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
    box-shadow: var(--md-elevation-2);
}

/* Contact CTA */
.contact-cta {
    background: linear-gradient(135deg, #2A2E35 0%, #1E1E24 100%);
    padding: 80px 0;
    text-align: center;
    color: #ffffff;
}

.contact-cta h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #64B6AC, #C0FDFB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-cta p {
    font-family: var(--font-secondary);
    color: #B2B2B2;
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.contact-cta mwc-button {
    --mdc-theme-primary: var(--md-primary);
    --mdc-theme-on-primary: var(--md-on-primary);
    --mdc-typography-button-font-size: 1rem;
    --mdc-typography-button-font-weight: 500;
    --mdc-typography-button-letter-spacing: 0.0892857143em;
    min-width: 160px;
}

.contact-button {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 24px !important;
    border-radius: var(--md-shape-corner-large);
    background: var(--md-primary);
    color: var(--md-on-primary) !important;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0.1px;
    transition: all 280ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--md-elevation-1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-button:hover {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container) !important;
    box-shadow: var(--md-elevation-2);
}

.contact-button:active {
    transform: scale(0.98);
}

/* Footer */
footer {
    font-family: var(--font-secondary);
    background: var(--primary);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.social-links a {
    color: var(--white);
    font-size: 1.5rem;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--accent);
    transform: translateY(-3px);
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .services-grid,
    .project-grid,
    .credentials-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-name .first-name,
    .hero-name .last-name {
        font-size: 3rem;
    }
}

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

/* Additional Animations */
@keyframes moveBackground {
    from { background-position: 0 0; }
    to { background-position: 100px 100px; }
}

/* Updated Section Headers */
.section h2 {
    font-family: var(--font-heading);
    position: relative;
    margin-bottom: 40px;
    padding-bottom: 15px;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

/* Material Icon Styles */
.material-icons {
    font-size: 2rem;
    color: var(--accent);
    transition: transform 0.3s ease;
}

.service-card:hover .material-icons {
    transform: scale(1.1);
}

/* Theme Toggle Button Styles */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background: var(--md-surface-container);
    color: var(--md-on-surface);
    box-shadow: var(--md-elevation-1);
    transition: background 280ms cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle i {
    font-size: 20px;
    color: var(--text-primary);
}

/* Loading Animation */
@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

.loading {
    animation: shimmer 1s linear infinite;
    background: linear-gradient(to right, #f6f7f8 8%, #edeef1 18%, #f6f7f8 33%);
    background-size: 800px 104px;
}

/* Hover Animations */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.timeline-item:hover {
    transform: translateX(10px);
    box-shadow: var(--md-elevation-2);
}

/* Cursor Animations */
.timeline-item,
.service-card,
.project-card,
.cert-item,
.edu-item,
.contact-button {
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Custom cursor effect */
@keyframes cursorEffect {
    0% { transform: scale(0); opacity: 1; }
    100% { transform: scale(15); opacity: 0; }
}

.cursor-effect {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.3;
    pointer-events: none;
    z-index: 1;
}