:root {
    --primary-color: #FF2D20;
    --secondary-color: #777BB4;
    --dark-bg: #1a1a1a;
    --light-bg: #f8f9fa;
    --text-dark: #333;
    --text-light: #fff;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="50" font-size="100" fill="rgba(255,255,255,0.03)">&lt;/&gt;</text></svg>');
    background-size: 100px 100px;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease-out;
}

.hero .tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s;
    animation-fill-mode: both;
}

.typing-effect {
    border-right: 3px solid var(--text-light);
    animation: blink 1s infinite;
}

/* Navigation */
.navbar {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
}

.nav-link {
    color: var(--text-light) !important;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* Skills Section */
.skills-section {
    padding: 80px 0;
    background: var(--light-bg);
}

.skill-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    border: 2px solid transparent;
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.skill-progress {
    background: #e9ecef;
    border-radius: 10px;
    height: 10px;
    overflow: hidden;
    margin-top: 15px;
}

.skill-progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    height: 100%;
    border-radius: 10px;
    animation: progressAnimation 2s ease-out;
}

/* Experience Section */
.experience-section {
    padding: 80px 0;
    background: white;
}

.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding: 20px 40px;
    width: 50%;
    margin-bottom: 30px;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border-left: 4px solid var(--primary-color);
}

.timeline-item:nth-child(even) .timeline-content {
    border-left: none;
    border-right: 4px solid var(--primary-color);
}

/* Projects Section */
.projects-section {
    padding: 80px 0;
    background: var(--light-bg);
}

.project-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.project-content {
    padding: 25px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.tech-tag {
    background: var(--primary-color);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: var(--dark-bg);
    color: var(--text-light);
}

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

.contact-item {
    margin-bottom: 20px;
}

.contact-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

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

@keyframes blink {
    0%, 50% { border-color: var(--text-light); }
    51%, 100% { border-color: transparent; }
}

@keyframes progressAnimation {
    from { width: 0; }
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 60px;
    }
    
    .timeline-content {
        border-left: 4px solid var(--primary-color) !important;
        border-right: none !important;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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