:root {
    --primary: #ffb800;
    --black: #000000;
    --white: #ffffff;
    --gray: #f0f0f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--white);
    color: var(--black);
    line-height: 1.6;
}

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

header {
    background-color: var(--black);
    /* Initial color is black */
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s ease;
    /* Smooth transition for color change */
}

/* Header styles for scrolled state will be added by JavaScript */
header.scrolled {
    background-color: var(--primary);
}

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

.logo {
    font-weight: bold;
    font-size: 24px;
    color: var(--white);
    /* Changed to white for better contrast with black background */
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
    /* Smooth transition for text color */
}

header.scrolled .logo {
    color: var(--black);
    /* Change back to black when header is scrolled */
}

.toggle-circle {
    position: absolute;
    width: 18px;
    height: 18px;
    background-color: var(--white);
    border-radius: 50%;
    left: 3px;
    transition: all 0.3s;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--white);
    /* Changed to white for better contrast with black background */
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

header.scrolled .nav-links a {
    color: var(--black);
    /* Change back to black when header is scrolled */
}

.nav-links a:hover {
    opacity: 0.8;
}

.hero {
    background-color: var(--black);
    color: #ffffff;
    padding: 140px 0 80px;
    display: flex;
    flex-direction: column;
    /* Change to column layout by default */
    align-items: center;
    text-align: center;
}

.hero-content {
    width: 100%;
    max-width: 800px;
    /* Add max-width for better readability */
    padding: 0 20px;
    margin: 0 auto;
}

.hero-image {
    width: 100%;
    margin-top: 40px;
    /* Add space between button and image */
    text-align: center;
}

h1 {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #ffffff, #ffb800, #cc8500);
    /* Gradient white -> #ffb800 -> darker amber */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background-color: var(--white);
    color: var(--black);
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(122, 122, 122, 0.1);
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 40px;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    height: 5px;
    width: 60%;
    background-color: var(--primary);
    bottom: -10px;
    left: 0;
}

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

.expertise-item {
    background-color: var(--white);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.3s;
}

.expertise-item:hover {
    transform: translateY(-10px);
}

.expertise-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.skill-tag {
    background-color: var(--primary);
    color: var(--black);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.focus-section {
    background-color: var(--black);
    color: var(--white);
}

.focus-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.focus-text {
    width: 60%;
}

.focus-image {
    width: 40%;
    text-align: center;
}

/* Add shake animation */
.shake {
    animation: shake-animation 4.72s ease infinite;
    transform-origin: 50% 50%;
}

@keyframes shake-animation {
    0% {
        transform: translate(0, 0)
    }

    1.78571% {
        transform: translate(5px, 0)
    }

    3.57143% {
        transform: translate(0, 0)
    }

    5.35714% {
        transform: translate(5px, 0)
    }

    7.14286% {
        transform: translate(0, 0)
    }

    8.92857% {
        transform: translate(5px, 0)
    }

    10.71429% {
        transform: translate(0, 0)
    }

    100% {
        transform: translate(0, 0)
    }
}

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

.journey-timeline::before {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--primary);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    margin-bottom: 50px;
    position: relative;
}

.timeline-content {
    position: relative;
    width: 45%;
    padding: 20px;
    background-color: var(--white);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border-radius: 10px;
    transition: transform 0.3s;
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-item:nth-child(odd) .timeline-content {
    left: 55%;
}

.timeline-item:nth-child(even) .timeline-content {
    left: 0;
}

.timeline-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--primary);
    border-radius: 50%;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.timeline-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.timeline-content p {
    margin-bottom: 10px;
}

.timeline-content .year {
    font-weight: bold;
    color: var(--primary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.education-item {
    background-color: var(--white);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.3s;
}

.education-item:hover {
    transform: translateY(-10px);
}

.education-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.education-item p {
    margin-bottom: 5px;
}

.connect-section {
    background-color: var(--primary);
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.connect-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.connect-item svg {
    margin-bottom: 15px;
    width: 40px;
    height: 40px;
}

.connect-item a {
    color: var(--black);
    font-weight: 500;
    text-decoration: none;
    margin-top: 5px;
    transition: color 0.3s;
}

.connect-item a:hover {
    color: var(--white);
}

footer {
    background-color: var(--black);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-logo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
}

.footer-quote {
    font-style: italic;
    max-width: 600px;
    margin: 0 auto 20px;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger div {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    /* Changed to white for better contrast with black background */
    margin: 5px 0;
    transition: background-color 0.3s ease;
    /* Smooth transition for hamburger color */
}

header.scrolled .hamburger div {
    background-color: var(--black);
    /* Change back to black when header is scrolled */
}

/* Typewriter animation styles */
.typewriter-container {
    display: inline-block;
    min-width: 170px;
    /* Width of the full text "kevincasas-dev" */
}

/* Change typewriter cursor color when header is scrolled */
header.scrolled .typewriter {
    border-right: 3px solid var(--white);
    animation: blink-caret-scrolled 0.75s step-end infinite;
}

.typewriter {
    overflow: hidden;
    border-right: 3px solid var(--primary);
    white-space: nowrap;
    margin: 0;
    letter-spacing: 0.15em;
    animation: blink-caret 0.75s step-end infinite;
    will-change: border-color;
    transform: translateZ(0);
  }

  @keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--primary) }
  }

/* New animation for the scrolled state */
@keyframes blink-caret-scrolled {

    from,
    to {
        border-color: transparent
    }

    50% {
        border-color: var(--white)
    }
}


/* Responsive styling */
@media (max-width: 992px) {
    .focus-content {
        flex-direction: column;
    }

    .focus-text,
    .focus-image {
        width: 100%;
    }

    .focus-image {
        margin-top: 30px;
    }

    .journey-timeline::before {
        left: 30px;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: calc(100% - 60px);
        left: 60px;
    }

    .timeline-dot {
        left: 30px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        background-color: var(--black);
        /* Changed to black initially */
        height: 100vh;
        width: 100%;
        top: 70px;
        right: -100%;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: right 0.5s, background-color 0.3s ease;
        /* Added transition for bg color */
        gap: 50px;
    }

    header.scrolled .nav-links {
        background-color: var(--primary);
        /* Change mobile menu background when scrolled */
    }

    .nav-links.active {
        right: 0;
    }

    .hamburger {
        display: block;
    }

    h1 {
        font-size: 40px;
    }

    .section-title {
        font-size: 32px;
    }
}

@media (min-width: 1200px) {
    .hero .container {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
}

@media (min-width: 1400px) {
    .hero .container {
        max-width: 1400px;
    }
}