:root {
    /* Core color palette */
    --primary: #FF6B6B;
    --primary-dark: #E55555;
    --primary-light: #FF8A8A;
    --secondary: #1A2332;
    --secondary-light: #2D3748;
    --accent: #4CAF50;
    --warning: #FF9800;
    --text: #2D3748;
    --text-light: #718096;
    --bg: #F8F9FA;
    --bg-dark: #FFFFFF;
    --border: #E2E8F0;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --card-hover-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Typography scale */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --font-code: 'JetBrains Mono', monospace;

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 80px;
    --grid-gap: 30px;
    --card-radius: 12px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-dark);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary);
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text);
    max-width: 65ch;
    line-height: 1.8;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border: none;
    border-radius: var(--card-radius);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
    color: white;
}

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

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

/* Header */
.header {
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    padding: 20px 0;
    transition: all var(--transition-normal);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--secondary);
    text-decoration: none;
    position: relative;
}

.logo::after {
    content: '.';
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text);
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    padding: calc(var(--section-padding) * 1.5) 0;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.03) 0%, rgba(74, 175, 80, 0.03) 100%);
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255, 107, 107, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.hero-text .tagline {
    font-size: 1.3rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.hero-text .location {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin: 40px 0;
}

.stat {
    text-align: center;
    padding: 20px;
    background: var(--bg-dark);
    border-radius: var(--card-radius);
    border: 1px solid var(--border);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
    margin-bottom: 5px;
    font-family: var(--font-display);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

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

.profile-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    position: relative;
    z-index: 2;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.profile-image:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-hover-shadow);
}

.image-border {
    position: absolute;
    top: -15px;
    left: -15px;
    right: 15px;
    bottom: 15px;
    border: 2px solid var(--primary);
    border-radius: var(--card-radius);
    z-index: 1;
    transition: all var(--transition-normal);
}

.hero-image:hover .image-border {
    transform: translate(-5px, -5px);
}

/* About Section */
.about {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.about-stat {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05) 0%, rgba(74, 175, 80, 0.05) 100%);
    padding: 25px;
    border-radius: var(--card-radius);
    border-left: 4px solid var(--primary);
    transition: transform var(--transition-normal);
}

.about-stat:hover {
    transform: translateX(5px);
}

.about-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    font-family: var(--font-display);
}

.about-stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Experience Timeline */
.experience {
    padding: var(--section-padding) 0;
    background: var(--bg);
}

.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    opacity: 0;
    transform: translateX(-30px);
    transition: all var(--transition-normal);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 10px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-dark);
    transition: all var(--transition-normal);
    box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.5);
}

.timeline-item:hover::before {
    transform: scale(1.2);
    box-shadow: 0 0 0 8px rgba(255, 107, 107, 0.2);
}

.timeline-date {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 10px;
    display: inline-block;
    padding: 5px 12px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 20px;
}

.timeline-content {
    background: var(--bg-dark);
    padding: 30px;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
    border: 1px solid var(--border);
}

.timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
    border-color: var(--primary-light);
}

.achievements {
    list-style: none;
    margin-top: 15px;
}

.achievements li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text);
}

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

/* Skills Section */
.skills {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--grid-gap);
}

.skill-category {
    background: var(--bg-dark);
    padding: 30px;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.skill-category:hover::before {
    opacity: 1;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.skill-category h3 {
    color: var(--secondary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category h3 i {
    color: var(--primary);
    font-size: 1.2em;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 8px 0;
    color: var(--text);
    position: relative;
    padding-left: 25px;
}

.skill-category li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    background: var(--bg-dark);
    padding: 40px;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    height: fit-content;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.contact-info h3 {
    color: var(--secondary);
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--bg);
    border-radius: var(--card-radius);
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition-normal);
    border: 1px solid var(--border);
}

.contact-item:hover {
    transform: translateX(10px);
    background: rgba(255, 107, 107, 0.05);
    border-color: var(--primary-light);
    color: var(--text);
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: all var(--transition-normal);
}

.contact-item:hover i {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.contact-form {
    background: var(--bg-dark);
    padding: 40px;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--card-radius);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-normal);
    background: var(--bg-dark);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Footer */
.footer {
    background: var(--secondary);
    color: white;
    padding: 40px 0;
    margin-top: auto;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 10px;
}

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

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Utility Classes */
.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

.hidden {
    opacity: 0;
    visibility: hidden;
}

.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-2 {
    margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .profile-image {
        margin: 40px auto 0;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:first-child {
        transform: translateY(8px) rotate(45deg);
    }

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

    .mobile-menu-toggle.active span:last-child {
        transform: translateY(-8px) rotate(-45deg);
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

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

    .hero-stats {
        flex-direction: column;
        align-items: center;
    }

    .stat {
        width: 100%;
        max-width: 200px;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item::before {
        left: -25px;
    }
}

/* Focus states for accessibility */
:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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