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

:root {
    --font-primary: 'Roboto', sans-serif;
    --font-heading: 'Montserrat', sans-serif;

    --transition-speed: 0.3s;
    --max-content-width: 1300px;
    --header-height: 80px;

    --color-background: #121212;
    --color-card-bg: #1e1e1e;
    --color-text: #f5f5f5;
    --color-secondary-text: #b0b0b0;
    --color-accent: #0E95F1;
    --color-accent-dark: #0574BF;
    --color-border: #333333;
    --shadow-subtle: 0 4px 15px rgba(0, 0, 0, 0.4);
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

h1,
h2,
h3 {
    font-family: var(--font-heading);
    color: var(--color-text);
    margin-bottom: 0.5em;
    line-height: 1.2;
}

p {
    margin-bottom: 1em;
    color: var(--color-secondary-text);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-speed);
}

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

ul[role="list"] {
    list-style: none;
}

.highlight {
    color: var(--color-accent);
}

.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-background);
    box-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-border);
}

.main-header nav {
    max-width: var(--max-content-width);
    margin: 0 auto;
    padding: 0 30px;
}

.main-header ul {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 30px;
    height: var(--header-height);
}

.main-header a {
    color: var(--color-secondary-text);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
    transition: color var(--transition-speed);
}

.main-header a:hover {
    color: var(--color-accent);
}

.main-header a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-speed);
}

.main-header a:hover::after {
    width: 100%;
}

.main-header a.active::after {
    width: 100%;
}

.main-header a.active,
.main-header a.active:hover {
    color: var(--color-accent);
}

.main-header .email-trigger {
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    border-radius: 4px;
    padding: 8px 15px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;

    transition: all var(--transition-speed);
    position: relative;
    top: 0;
}

.main-header .email-trigger::after {
    display: none;
}

.main-header .email-trigger:hover,
.main-header .email-trigger:focus {
    background-color: var(--color-accent);
    color: var(--color-background);
    border-color: var(--color-accent-dark);
    outline: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 25px;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-speed);
    cursor: pointer;
    margin-right: 15px;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-background);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    color: var(--color-background);
    box-shadow: 0 5px 20px rgba(14, 149, 241, 0.5);
}

.btn-secondary {
    background: none;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

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

.btn-large {
    padding: 15px 40px;
    font-size: 1.1em;
}

.btn-secondary.small {
    padding: 8px 15px;
    font-size: 0.9em;
    margin-top: 10px;
    margin-right: 0;
}

.content-section {
    max-width: var(--max-content-width);
    margin: 100px auto;
    padding: 0 30px;
}

.section-title {
    color: var(--color-accent);
    font-weight: 800;
    font-size: 1.5em;
    margin-bottom: 10px;

    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.section-description {
    font-size: 1.1em;
    margin-bottom: 40px;
    color: var(--color-secondary-text);
}

.hero-section {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 50px 30px;
}

.hero-content {
    max-width: 800px;
}

.greeting-text {
    font-size: 1.2em;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.main-title {
    font-size: 4.5em;
    font-weight: 800;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.3em;
    color: var(--color-secondary-text);
    margin-bottom: 40px;
}

.hero-subtitle strong {
    color: var(--color-accent);
}

.cta-buttons {
    margin-bottom: 25px;
}

.social-hero-links {
    margin: 20px 0 60px;
}

.social-hero-links a {
    font-size: 2em;
    margin: 0 15px;
    color: var(--color-secondary-text);
    transition: color 0.3s, transform 0.3s;
    display: inline-block;
}

.social-hero-links a:hover {
    color: var(--color-accent);
    transform: scale(1.1);
}

.tech-stack-display {
    margin-top: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tech-stack-display p {
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
}

.tech-icons i {
    font-size: 2.5em;
    margin: 0 15px;
    color: var(--color-secondary-text);
    transition: color 0.3s;
}

.tech-icons i:hover {
    color: var(--color-accent);
}

.tech-icons .fa-vuejs {
    color: var(--color-accent);
}


.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;

    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.about-text p {
    font-size: 1.1em;
}

.about-text strong {
    color: var(--color-accent);
}

.about-text a {
    font-weight: 500;
}

.chart-box {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow-subtle);
}

.chart-box h3 {
    color: var(--color-accent);
    margin-bottom: 25px;
    border-bottom: 1px dashed var(--color-border);
    padding-bottom: 10px;
    font-size: 1.3em;
}

.skill-bar-container {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-label {
    font-weight: 500;
    color: var(--color-text);
    font-size: 0.95em;
    width: 40%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.skill-bar-wrapper {
    flex-grow: 1;
    position: relative;
    height: 18px;
    border-radius: 4px;
    background-color: var(--color-border);
    overflow: hidden;
}

.skill-bar {
    height: 100%;
    background-color: var(--color-accent);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s ease-out;
}


.skill-percentage {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 0.95em;
    width: 50px;
    text-align: right;
    flex-shrink: 0;
}

@keyframes drawSkillBar {
    from {
        width: 0;
    }

    to {
        width: var(--skill-width);
    }
}

.skill-bar.animated {
    animation: drawSkillBar 1.5s ease-out forwards;
}


.project-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.project-card {
    background-color: var(--color-card-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow-subtle);
    border-top: 5px solid var(--color-accent-dark);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(14, 149, 241, 0.3);
}

.project-card .tag {
    font-size: 0.8em;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-card h3 {
    font-size: 1.3em;
    margin-bottom: 15px;
}

.project-card p {
    flex-grow: 1;
    margin-bottom: 20px;
}

.project-card .tech-used {
    margin-top: auto;
    margin-bottom: 15px;
}

.project-card .tech-used span {
    display: inline-block;
    font-size: 0.75em;
    background-color: var(--color-border);
    color: var(--color-secondary-text);
    padding: 4px 8px;
    border-radius: 4px;
    margin-right: 5px;
    margin-bottom: 5px;
}

.project-card .project-link {
    font-weight: 700;
    display: inline-block;
    margin-top: 10px;
    color: var(--color-accent);
}

.project-card .project-link i {
    margin-left: 5px;
}

.contact-section {
    text-align: center;
    margin-top: 150px;
    margin-bottom: 150px;
}

.contact-box {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
    background-color: var(--color-card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow-subtle);
    border: 1px solid var(--color-border);
}

.contact-message {
    font-size: 1.1em;
    margin-bottom: 30px;
}

.email-trigger .svg-icon {
    margin-right: 10px;
}

.social-contact {
    margin-top: 30px;
    border-top: 1px dashed var(--color-border);
    padding-top: 20px;
}

.social-contact a {
    font-size: 1.8em;
    margin: 0 10px;
    color: var(--color-secondary-text);
    transition: color 0.3s, transform 0.3s;
}

.social-contact a:hover {
    color: var(--color-accent);
    transform: scale(1.1);
}

footer {
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-secondary-text);
    font-size: 0.9em;
}

footer a {
    color: var(--color-secondary-text);
}

footer a:hover {
    color: var(--color-accent);
}

.footer-link-text {
    color: var(--color-accent);
}

.toast-notification {
    visibility: hidden;
    min-width: 250px;
    background-color: var(--color-card-bg);
    color: var(--color-text);
    text-align: center;
    border-radius: 8px;
    padding: 16px;
    position: fixed;
    z-index: 1001;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: visibility 0s, opacity var(--transition-speed);
}

.toast-notification.show {
    visibility: visible;
    opacity: 1;
}

.toast-message {
    font-weight: 700;
    display: block;
    color: var(--color-accent);
    margin-bottom: 5px;
}

.toast-action {
    font-size: 0.9em;
    color: var(--color-secondary-text);
}

@media (max-width: 1000px) {
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-title {
        font-size: 3em;
    }

    .hero-subtitle {
        font-size: 1.1em;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

    .main-header ul {
        gap: 15px;
    }

    .skill-label {
        width: 30%;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2.5em;
    }

    .btn {
        display: block;
        width: 100%;
        margin: 10px 0;
        text-align: center;
    }

    .tech-icons i {
        font-size: 2em;
        margin: 0 8px;
    }

    .main-header ul {
        justify-content: space-between;
        padding: 0 20px;
    }

    .skill-label {
        width: 35%;
    }

    .skill-percentage {
        width: 45px;
    }    
}

.captcha-screen {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
}

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