/* ===== FREDERICK'S TECH PORTFOLIO THEME ===== */
:root {
    --quantum-dark: #0a0e17;        /* Deep space blue */
    --cyber-navy: #0d1429;          /* Tech navy */
    --matrix-green: #00ff9d;        /* Matrix green */
    --quantum-blue: #00b4ff;        /* Quantum blue */
    --neon-purple: #9d4edd;         /* Neon purple */
    --hologram-teal: #00e5ff;       /* Hologram teal */
    --terminal-text: #e0e0ff;       /* Terminal white */
    --cyber-gray: #8a8fb3;          /* Cyber gray */
    --card-bg: rgba(13, 20, 41, 0.85);
    --glass-bg: rgba(20, 27, 56, 0.7);
    --grid-color: rgba(0, 180, 255, 0.1);
    --shadow-glow: 0 0 30px rgba(0, 180, 255, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'JetBrains Mono', 'Consolas', 'Segoe UI', monospace;
    line-height: 1.7;
    color: var(--terminal-text);
    background-color: var(--quantum-dark);
    background-image: 
        url('images/quantum-bg.jpg'),
        linear-gradient(45deg, rgba(0, 180, 255, 0.05) 1px, transparent 1px),
        linear-gradient(135deg, rgba(157, 78, 221, 0.05) 1px, transparent 1px);
    background-size: cover, 50px 50px, 50px 50px;
    background-attachment: fixed;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 180, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(157, 78, 221, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(0, 255, 157, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ===== QUANTUM GRID OVERLAY ===== */
.quantum-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
    opacity: 0.3;
}

/* ===== CONTAINER ===== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== CYBER NAVIGATION ===== */
.cyber-nav {
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(0, 180, 255, 0.2);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--matrix-green);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 1px;
    position: relative;
}

.logo::after {
    content: '_';
    animation: blink 1s infinite;
    color: var(--quantum-blue);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--cyber-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.5rem 1rem;
    position: relative;
    transition: var(--transition);
}

.nav-links a::before {
    content: '[';
    position: absolute;
    left: 0;
    opacity: 0;
    transition: var(--transition);
    color: var(--matrix-green);
}

.nav-links a::after {
    content: ']';
    position: absolute;
    right: 0;
    opacity: 0;
    transition: var(--transition);
    color: var(--matrix-green);
}

.nav-links a:hover {
    color: var(--terminal-text);
}

.nav-links a:hover::before,
.nav-links a:hover::after {
    opacity: 1;
}

.nav-links a.active {
    color: var(--matrix-green);
    background: rgba(0, 255, 157, 0.1);
    border: 1px solid rgba(0, 255, 157, 0.3);
}

.nav-links a.active::before,
.nav-links a.active::after {
    opacity: 1;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: 1px solid var(--quantum-blue);
    color: var(--quantum-blue);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
}

/* ===== HERO SECTION ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 150px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 180, 255, 0.15) 0%, transparent 70%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(90deg, var(--matrix-green), var(--quantum-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 30px rgba(0, 180, 255, 0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--cyber-gray);
    margin-bottom: 2rem;
    max-width: 500px;
    border-left: 3px solid var(--matrix-green);
    padding-left: 1.5rem;
}

.hero-typing {
    font-size: 1.4rem;
    color: var(--quantum-blue);
    margin-bottom: 2rem;
    font-weight: 600;
    min-height: 2rem;
}

.hero-typing::after {
    content: '|';
    animation: blink 1s infinite;
    margin-left: 5px;
}

/* Profile Image Container */
.profile-image-container {
    position: relative;
    width: 380px;
    height: 380px;
    margin: 0 auto;
}

.profile-image-wrapper {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid transparent;
    background: linear-gradient(45deg, var(--matrix-green), var(--quantum-blue), var(--neon-purple));
    background-size: 300% 300%;
    animation: gradientShift 5s ease infinite;
    padding: 8px;
    position: relative;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    filter: contrast(1.1) brightness(1.05);
    transition: var(--transition);
}

.profile-img:hover {
    transform: scale(1.03);
    filter: contrast(1.2) brightness(1.1);
}

/* ===== BUTTONS ===== */
.btn {
    padding: 1rem 2.2rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: none;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 1px;
    text-transform: uppercase;
    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 0.7s;
}

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

.btn-primary {
    background: linear-gradient(90deg, var(--matrix-green), var(--quantum-blue));
    color: var(--quantum-dark);
    border: 1px solid var(--matrix-green);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--quantum-blue);
    border: 1px solid var(--quantum-blue);
}

.btn-secondary:hover {
    background: rgba(0, 180, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 0 20px rgba(0, 180, 255, 0.3);
}

.btn-whatsapp {
    background: linear-gradient(90deg, #25D366, #128C7E);
    color: white;
    border: 1px solid #25D366;
}

.btn-whatsapp:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 20px rgba(37, 211, 102, 0.4);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    padding: 5rem 0;
}

.page-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.page-title {
    font-size: 3rem;
    color: var(--terminal-text);
    margin-bottom: 1rem;
    font-family: 'Orbitron', sans-serif;
    position: relative;
    display: inline-block;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--matrix-green), var(--quantum-blue));
    border-radius: 2px;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--cyber-gray);
    max-width: 700px;
    margin: 0 auto 2rem;
}

/* ===== TECH CARDS ===== */
.tech-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2.5rem;
    border: 1px solid rgba(0, 180, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(0, 180, 255, 0.05), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.tech-card:hover::before {
    transform: translateX(100%);
}

.tech-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 255, 157, 0.4);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card-title {
    font-size: 1.8rem;
    color: var(--terminal-text);
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid rgba(0, 180, 255, 0.3);
    font-family: 'Orbitron', sans-serif;
    position: relative;
}

.card-title::before {
    content: '# ';
    color: var(--matrix-green);
}

/* ===== IMAGE CONTAINERS ===== */
.image-container {
    width: 100%;
    height: 300px;
    border-radius: 10px;
    overflow: hidden;
    margin: 2rem 0;
    border: 1px solid rgba(0, 180, 255, 0.3);
    position: relative;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.image-container:hover img {
    transform: scale(1.05);
}

.image-caption {
    text-align: center;
    color: var(--cyber-gray);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-style: italic;
}

/* ===== SKILLS STYLES ===== */
.skill-category {
    margin-bottom: 2.5rem;
}

.skill-category h3 {
    color: var(--quantum-blue);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
}

.skill-name {
    color: var(--terminal-text);
    font-weight: 500;
}

.skill-percent {
    color: var(--matrix-green);
    font-weight: 600;
}

.skill-bar {
    height: 10px;
    background: rgba(0, 180, 255, 0.1);
    border-radius: 5px;
    overflow: hidden;
    border: 1px solid rgba(0, 180, 255, 0.2);
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--matrix-green), var(--quantum-blue));
    width: 0;
    border-radius: 5px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    100% { transform: translateX(100%); }
}

/* ===== TIMELINE ===== */
.tech-timeline {
    position: relative;
    max-width: 900px;
    margin: 3rem auto;
    padding-left: 2rem;
}

.tech-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--matrix-green), var(--quantum-blue), var(--neon-purple));
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 5px;
    width: 20px;
    height: 20px;
    background: var(--quantum-dark);
    border: 3px solid var(--matrix-green);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.5);
}

.timeline-date {
    display: inline-block;
    padding: 0.3rem 1.2rem;
    background: rgba(0, 180, 255, 0.1);
    color: var(--quantum-blue);
    border-radius: 20px;
    font-weight: 600;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
    border: 1px solid rgba(0, 180, 255, 0.3);
    font-family: 'JetBrains Mono', monospace;
}

.timeline-content {
    background: var(--card-bg);
    padding: 1.8rem;
    border-radius: 10px;
    border-left: 4px solid var(--matrix-green);
    border-top: 1px solid rgba(0, 180, 255, 0.2);
    border-right: 1px solid rgba(0, 180, 255, 0.2);
    border-bottom: 1px solid rgba(0, 180, 255, 0.2);
}

/* ===== CONTACT FORM ===== */
.contact-form {
    max-width: 700px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.8rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--terminal-text);
    font-weight: 600;
    font-size: 0.95rem;
    font-family: 'JetBrains Mono', monospace;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    background: rgba(13, 20, 41, 0.7);
    border: 1px solid rgba(0, 180, 255, 0.3);
    border-radius: 6px;
    color: var(--terminal-text);
    font-size: 1rem;
    transition: var(--transition);
    font-family: 'JetBrains Mono', monospace;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--matrix-green);
    box-shadow: 0 0 0 3px rgba(0, 255, 157, 0.1);
    background: rgba(13, 20, 41, 0.9);
}

.form-group textarea {
    min-height: 180px;
    resize: vertical;
}

/* ===== CONTACT INFO ===== */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid rgba(0, 180, 255, 0.2);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--matrix-green);
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--quantum-blue);
}

.whatsapp-contact {
    background: rgba(37, 211, 102, 0.1);
    border-color: rgba(37, 211, 102, 0.3);
}

.whatsapp-contact .contact-icon {
    color: #25D366;
}

/* ===== FOOTER ===== */
.cyber-footer {
    background: rgba(10, 14, 23, 0.98);
    padding: 3rem 0 2rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(0, 180, 255, 0.2);
    position: relative;
}

.cyber-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--matrix-green), var(--quantum-blue), var(--neon-purple), transparent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--matrix-green);
    text-decoration: none;
    font-family: 'Orbitron', sans-serif;
}

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

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(13, 20, 41, 0.7);
    border-radius: 50%;
    color: var(--terminal-text);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(0, 180, 255, 0.3);
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--quantum-blue);
    color: var(--quantum-dark);
    transform: translateY(-3px);
    border-color: var(--quantum-blue);
}

.copyright {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 180, 255, 0.1);
    color: var(--cyber-gray);
    font-size: 0.9rem;
    width: 100%;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1100px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .profile-image-container {
        width: 320px;
        height: 320px;
        order: -1;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid rgba(0, 180, 255, 0.2);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        gap: 1rem;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .page-title {
        font-size: 2.2rem;
    }
    
    .tech-card {
        padding: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .profile-image-container {
        width: 280px;
        height: 280px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%;
        padding: 0 15px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 0.9rem 1.8rem;
        font-size: 0.9rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .profile-image-container {
        width: 250px;
        height: 250px;
    }
    
    .tech-card {
        padding: 1.5rem;
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-left {
    opacity: 0;
    animation: fadeInLeft 0.8s ease forwards;
}

.fade-in-right {
    opacity: 0;
    animation: fadeInRight 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }
/* ===== IMAGE HANDLING ===== */
.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    filter: contrast(1.1) brightness(1.05);
    transition: var(--transition);
}

.university-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

/* Fallback for missing images */
img[onerror] {
    font-family: 'JetBrains Mono', monospace;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--terminal-text);
    background: linear-gradient(45deg, var(--quantum-dark), var(--cyber-navy));
}

/* ===== RESPONSIVE IMAGES ===== */
@media (max-width: 768px) {
    .profile-image-container {
        width: 280px;
        height: 280px;
    }
    
    .image-container {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .profile-image-container {
        width: 240px;
        height: 240px;
    }
    
    .image-container {
        height: 200px;
    }

}
/* ===== MOBILE RESPONSIVENESS ===== */
@media (max-width: 768px) {
    
    /* 1. Fix the navigation for mobile */
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid rgba(0, 180, 255, 0.2);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        gap: 1rem;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    /* 2. Adjust hero section for mobile */
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .profile-image-container {
        width: 280px;
        height: 280px;
        order: -1; /* Moves image above text on mobile */
    }
    
    /* 3. Fix layout for content cards */
    .tech-card {
        padding: 1.8rem;
    }
    
    /* 4. Adjust grid layouts to single column */
    .form-row,
    .contact-info-grid,
    .hero-buttons {
        grid-template-columns: 1fr;
        flex-direction: column;
    }
    
    .hero-buttons {
        gap: 1rem;
    }
    
    /* 5. Fix timeline for mobile */
    .tech-timeline {
        padding-left: 2rem;
    }
    
    .tech-timeline::before {
        left: 0;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 2.5rem;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    /* 6. Adjust image containers */
    .image-container {
        height: 250px;
    }
    
    /* 7. Reduce font sizes for better readability */
    .page-title {
        font-size: 2.2rem;
    }
    
    .card-title {
        font-size: 1.5rem;
    }
}

/* Extra small devices (phones less than 480px) */
@media (max-width: 480px) {
    .container {
        width: 95%;
        padding: 0 15px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 0.9rem 1.8rem;
        font-size: 0.9rem;
    }
    
    .profile-image-container {
        width: 240px;
        height: 240px;
    }
    
    .tech-card {
        padding: 1.5rem;
    }
}