:root{
    --bg-header: rgba(10, 10, 10, 0.9);
    --bg-color: #0B0E14;
    --bg-secondary: #0a0a0a;
    --primary-color: #D4AF37;
    --primary-text: #F1F5F9;
    --secondary-text: #94A3B8;
    --card-bg: #151921;
    --border-color: #333333;
    --bg-contact: #1A1C1E;
    --bg-input: #0F1113;
    --border-input: #2D2F31;
    --pill-text-color: #D4AF37;
    --pill-text-hover: #0B0E14;
    --transition: all .3s ease;
    --shadow: 0 10px 30px rgba(212, 175, 55, .5);
}

body.light-mode{
    --bg-header: rgb(253, 252, 249, 0.9);
    --bg-color: #FDFCF9;
    --bg-secondary: #EAE7E1;
    --primary-color: #D4AF37;
    --primary-text: #1A1C1E;
    --secondary-text: #525252;
    --card-bg: #FFFFFF;
    --border-color: #EAE7E1;
    --bg-contact: #FDFCF9;
    --bg-input: #FFFFFF;
    --pill-text-color: #525252;
    --pill-text-hover: #1A1C1E;
    --transition: all .3s ease;
    --shadow: 0 10px 30px rgba(0,0,0,0.03);
    --shadow-white: 0 10px 30px rgba(0,0,0,0.03);  
}

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

html{
    scroll-behavior: smooth;
    scrollbar-color: var(--primary-color) var(--bg-color);
}

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

a{
    text-decoration: none;
    color: inherit;
}

ul{
    list-style: none;
}

img{
    max-width: 100%;
    height: auto;
    display: block;
}

header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-header);
    backdrop-filter: blur(8px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

#navbar{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo{
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo span{
    color: var(--primary-color);
}

.nav-links{
    display: flex;
    gap: 2rem;
}

.nav-links a{
    position: relative;
    padding: .5rem 0;
    transition: var(--transition);
}

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

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

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

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

#toggle{
    display: none;
}

#labelToggle{
    padding: 1rem 5%;
    font-size: 1.5rem;
    color: yellow;
    cursor: pointer;
}

.language-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 10px 0;
}

.language-switch .lang-text {
    font-size: 0.85rem;
    font-weight: 700;
    transition: var(--transition); 
    color: var(--secondary-text); 
}

.switch-container {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
    cursor: pointer;
}

.slider {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

#language-toggle:checked ~ .switch-container .slider {
    background-color: var(--primary-color);
}

#language-toggle:checked ~ .switch-container .slider:before {
    transform: translateX(18px); 
}

#language-toggle:not(:checked) + .lang-text {
    color: var(--primary-color);
    opacity: 1;
}

#language-toggle:checked ~ .lang-text:last-of-type {
    color: var(--primary-color);
    opacity: 1;
}

.lang-text {
    color: var(--secondary-text);
    opacity: 0.5;
    transition: all 0.3s ease;
    font-weight: 700;
}

section{
    padding: 6rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title{
    font-size: 2rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.section-title:after{
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.btn{
    display: inline-block;
    background-color: var(--primary-color);
    color: #0F1113;
    padding: .8rem 1.5rem;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
}

.btn:hover{
    background-color: #F1C40F;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.hero{
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
}

.hero-content{
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4rem;
}

.hero-text{
    flex: 1;
}

.hero-text h1{
    font-size: 3rem;
    margin-bottom: .5rem;
    font-weight: 700;
}

.hero-text h2{
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-text p{
    margin-bottom: 1.5rem;
    color: var(--secondary-text);
    font-size: 1.1rem;
    max-width: 600px;
}

.social-links{
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-links a{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    color: var(--primary-text);
    transition: var(--transition);
    font-size: 1.2rem;
    border: 1px solid var(--primary-color);
}

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

.hero-image{
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.hero-image img{
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 25px rgba(212, 175, 55, .5);
    transition: var(--transition);
}

.hero-image img:hover{
    transform: sacel(1.03);
    box-shadow: 0 0 30px rgba(212, 175, 55, .5);
}

.timeline{
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before{
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    width: 2px;
    height: 100%;
    background-color: var(--border-color);
}

.timeline-item{
    position: relative;
    margin-bottom: 3rem;
    padding-left: 50px;
}

.timeline-item::before{
    content: '';
    position: absolute;
    top: 5px;
    left: 10px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--primary-color);
    transition: var(--transition);
    z-index: 1;
}

.timeline-item:hover::before{
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.8);
    background-color: #FFFFFF;
}

.timeline-content{
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    transition: var(--transition);
    border-left: 3px solid transparent;
    box-shadow: var(--shadow-white);
}

.timeline-content:hover{
    background-color: rgba(212, 175, 55, 0.03);
    border-left: 3px solid #D4AF37; 
    transform: translateX(5px);
} 

.date{
    display: inline-block;
    padding: .3rem .8rem;
    background-color: rgba(212, 175, 55, 0.2);
    color: var(--primary-text);
    border-radius: 5px;
    font-size: .9rem;
    margin-bottom: 1rem;
} 

.timeline-content h3{
    margin-bottom: .5rem;
    font-size: 1.3rem;
}

.timeline-content h4{
    color: var(--secondary-text);
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 500;
}

.timeline-content p{
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.timeline-content:hover p{
    opacity: 1;
}

.skills{
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: 20px;
    margin-bottom: 25px;
}

.skills li{
    font-size: .8rem;
    padding: .3rem .8rem;
    border-radius: 20px;
}

.timeline-links{
    display: flex;
    gap: 1rem;
    margin-top: 20px;
}

.timeline-links a{
    font-size: .9rem;
    color: var(--secondary-text);
    transition: var(--transition);
}

.timeline-links a:hover{
    color: var(--primary-color);
}

.projects-container{
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card{
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-white);
}

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

.project-card:hover .project-info p{
    opacity: 1;
}

.project-img{
    overflow: hidden;
}

.project-img img{
    transition: var(--transition);
    width: 100%;
}

.project-card:hover .projects-img img{
    transform: scale(1.05);
}

.project-info{
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-info h3{
    margin-bottom: .8rem;
    font-size: 1.3rem;
}

.project-info p{
    color: var(--primary-text);
    margin-bottom: 1rem;
    font-size: .95rem;
    flex-grow: 1;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.tech-pill{
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--pill-text-color);
    border-radius: 50px;
    padding: 2px 10px;      
    font-size: 14px;        
    font-weight: 500;       
    min-width: auto;
    transition: all 0.3s ease;
    display: inline-block;
    cursor: default;
    line-height: 1;
}

.tech-pill:hover{
    background-color: var(--primary-color);
    color: var(--pill-text-hover);
    transform: translateY(-2px);
}

.project-links{
    margin-top: 20px;
    display: flex;
    gap: 1rem;
}

.project-links a{
    font-size: .9rem;
    color: var(--secondary-text);
    transition: var(--transition);
}

.project-links a:hover{
    color: var(--primary-color);
}

.contact-container{
    background-color: var(--bg-contact);
    max-width: 450px;
    border-radius: 10px;
    padding: 40px;
    border: 1px solid rgba(212, 175, 55, 0.1);
    margin: auto;
    display: grid;
    gap: 1em;
    grid-auto-columns: 100%;
    box-shadow: var(--shadow-white);
}

.contact-input, .contact-input-message{
    width: 100%;
    background-color: var(--bg-input); 
    border: 1px solid #2D2F31;
    border-radius: 8px;
    padding: 15px;
    color: #FFFFFF;
    font-family: inherit;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.contact-input:focus, .contact-input-message:focus{
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.2);
}

.contact-input-message{
    resize: none;
    padding: 1.8em 1em;
    margin-bottom: .5em;
}

.contact-cta{
    background-color: var(--primary-color);
    color: #1A1C1E;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.contact-cta:hover{
    background-color: #F1C40F; 
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.4);
}

footer{
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 5%;
}

.footer-content{
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 480px) {
    header{
        position: static;
    }
    #navbar{
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }
    .hero-content, .nav-links{
        flex-direction: column;
    }
}