@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700&display=swap');

:root {
    --c-text-primary: #e0e4f1;
    --c-text-secondary: #a1aac5;
    --c-text-action: #fff;
    --c-accent-primary: #636CFF;
    --c-border-primary: #3b3f52;
    --c-background-primary: #0a0a0a;
    --c-background-secondary: #0a0a0a;
    --c-background-tertiary: #121212;
    --c-background-quaternary: #181818;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Be Vietnam Pro', sans-serif;
    background: var(--c-background-secondary);
    color: var(--c-text-primary);
    line-height: 1.6;
}

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

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

button {
    font: inherit;
    cursor: pointer;
    background: none;
    border: none;
}

.responsive-wrapper {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
}

/* === Preloader Wrapper === */

#preloader {
    position: fixed;
    inset: 0;
    background: rgb(10, 10, 10);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader-ring {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 6px solid transparent;
    border-top: 6px solid var(--c-accent-primary);
    border-bottom: 6px solid #636CFF;
    animation: spin 1.6s linear infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle, #2f3142 0%, transparent 70%);
    box-shadow: 0 0 32px rgba(124, 132, 255, 0.5);
}

.loader-text {
    font-size: 1.2rem;
    font-weight: 700;
    font-family: 'Be Vietnam Pro', sans-serif;
    display: flex;
    gap: 0.2rem;
}

.loader-text span {
    color: var(--c-text-primary);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulseText {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

/* === Header === */

.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(12px);
    background: rgba(10, 10, 10, 0.6);
    border-bottom: 1px solid var(--c-border-primary);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
}

.logo a {
    display: inline-flex;
    align-items: center;
    font-size: 1.75rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--c-text-primary);
}

.logo-main {
    display: inline-block;
    font-family: 'Be Vietnam Pro', sans-serif;
}

.logo a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    user-select: none;
}

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

.nav-links a {
    position: relative;
    color: var(--c-text-action);
    font-weight: 500;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 0%;
    height: 2px;
    background: var(--c-accent-primary);
    transition: width 0.3s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.button {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

.button.primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background-color: transparent;
    border: 1px solid var(--c-border-primary);
    background-color: #6366f1;
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.button.primary:hover {
    background-color: #3038c0;
}

.button.primary i {
    font-size: 1.1rem;
    display: inline-block;
    line-height: 1;
    transform: translateY(1px);
}

.button.ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background-color: transparent;
    border: 1px solid var(--c-border-primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.button.ghost:hover {
    background-color: #6366f1;
    color: #ffffff;
}

.button.ghost i {
    font-size: 1.1rem;
    display: inline-block;
    line-height: 1;
    transform: translateY(1px);
}

.menu-toggle {
    font-size: 1.5rem;
    background: transparent;
    border: none;
    color: var(--c-text-action);
    cursor: pointer;
    display: none;
}

.mobile-menu {
    position: sticky;
    top: 80px;
    z-index: 998;
    background: rgba(10, 10, 10, 0);
    border-bottom: 1px solid var(--c-border-primary);
    display: none;
    flex-direction: column;
    gap: 1rem;
    padding: 2rem 1.5rem;
    left: 0;
    right: 0;
    animation: fadeInSlide 0.25s ease forwards;
}

.profile-mobile-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

@media (max-width: 900px) {
    .profile-mobile-wrapper {
        margin-left: auto;
    }
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-menu.active {
    display: flex;
}

.desktop-only {
    display: flex;
}

@media (max-width: 900px) {
    .mobile-menu a {
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--c-text-action);
        transition: color 0.2s;
    }

    .mobile-menu a:hover {
        color: var(--c-accent-primary);
    }

    .desktop-only {
        display: none;
    }

    .mobile-menu .button {
        display: block;
        width: 100%;
        text-align: center;
        margin-top: 0.75rem;
        padding: 0.65rem 1rem;
    }

    .mobile-menu .button.ghost {
        border: 2px solid var(--c-accent-primary);
        background: transparent;
        color: var(--c-accent-primary);
    }

    .mobile-menu .button.primary {
        background-color: var(--c-accent-primary);
        color: #fff;
    }

    .mobile-menu hr {
        margin: 1rem 0;
        border: none;
        border-top: 1px solid var(--c-border-primary);
    }

    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .menu-toggle i {
        font-size: 1.5rem;
        transition: transform 0.2s;
    }

    .menu-toggle .close-icon {
        display: none;
    }

    .menu-toggle.open .default-icon {
        display: none;
    }

    .menu-toggle.open .close-icon {
        display: inline;
    }
}

/* === Hero === */

.hero-section {
    position: relative;
    padding: 2rem 1rem;
    background: radial-gradient(ellipse at top left, var(--c-background-secondary), var(--c-background-primary));
    overflow: hidden;
    border-radius: 16px;
}

.hero-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
}

.hero-text {
    flex: 1;
    min-width: 300px;
}

.hero-text h1 {
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1.3;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--c-text-secondary);
    margin: 1rem 0 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
    user-select: none;
}

.hero-image img {
    border-radius: 12px;
    box-shadow: 0 8px 28px rgba(200, 200, 200, 0.1);
}

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

.hero-social-links a {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    background: var(--c-background-primary);
    border-radius: 100%;
    border: 2px solid var(--c-border-primary);
    backdrop-filter: blur(4px);
    box-shadow: 0 2px 6px rgba(99, 108, 255, 0.15);
    transition: all 0.35s ease;
}

.hero-social-links a:hover {
    transform: scale(1.1);
    background: var(--c-accent-primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(99, 108, 255, 0.45);
}

/* === About === */

.about-section {
    background: var(--c-background-primary);
    padding-top: 5rem;
    padding-left: 1rem;
    padding-right: 1rem;
    border-radius: 12px;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--c-text-primary);
    margin-bottom: 1rem;
}

.about-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--c-text-secondary);
    margin-bottom: 5rem;
}

.timeline-wrapper {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.timeline-column {
    flex: 1;
    min-width: 280px;
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--c-accent-primary);
}

.timeline-title {
    font-size: 1.5rem;
    color: var(--c-accent-primary);
    margin-bottom: 1rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.card {
    background: rgba(255, 255, 255, 0.03);
    padding: 1rem 1.2rem;
    border-radius: 12px;
    color: var(--c-text-primary);
    border: 1px solid var(--c-border-primary);
}

.card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
}

.card p {
    font-size: 0.95rem;
    color: var(--c-text-secondary);
}

.card span {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--c-text-action);
}

/* === Skills === */

.skills-section {
    background: var(--c-background-primary);
    padding-top: 5rem;
    padding-left: 1rem;
    padding-right: 1rem;
    border-radius: 12px;
    overflow: hidden;
}

.skills-marquee {
    width: 100%;
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    position: relative;
    background-color: #181818;
}

.skills-track {
    display: flex;
    gap: 1rem;
    animation: scrollLoop 45s linear infinite;
    will-change: transform;
    width: max-content;
    margin: 15px 0;
}

.skill-item {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1.2rem;
    background: var(--c-background-primary);
    border: 1px solid var(--c-border-primary);
    border-radius: 20px;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.skill-item img {
    width: 38px;
    height: 38px;
    opacity: 0.9;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.skill-item span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--c-text-primary);
}

/* .skill-item:hover {
    background: var(--c-accent-primary);
    box-shadow: 0 0 18px rgba(99, 108, 255, 0.4);
} */

/* .skills-track:hover {
    animation-play-state: paused;
} */

@keyframes scrollLoop {
    0% {
        transform: translateX(70%);
    }

    100% {
        transform: translateX(-100%);
    }
}

@media (max-width: 900px) {
    @keyframes scrollLoop {
        0% {
            transform: translateX(40%);
        }

        100% {
            transform: translateX(-100%);
        }
    }

    .skills-track {
        animation: scrollLoop 35s linear infinite;
    }
}

/* === Projects === */

.projects-section {
    background: var(--c-background-primary);
    padding-top: 5rem;
    padding-left: 1rem;
    padding-right: 1rem;
    border-radius: 12px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.project-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--c-border-primary);
    border-radius: 14px;
    padding: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 18px rgba(99, 108, 255, 0.1);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 24px rgba(99, 108, 255, 0.25);
    border-color: var(--c-accent-primary);
}

.project-link {
    display: block;
    text-align: center;
    text-decoration: none;
    color: inherit;
}

.project-image {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 6px 16px rgba(255, 255, 255, 0.04);
}

.project-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--c-text-primary);
    transition: color 0.3s ease;
    margin-top: 1rem;
}

.project-link:hover .project-title {
    color: var(--c-accent-primary);
}

.project-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.project-actions .button.ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

/* === Contact === */

.contact-section {
    background: var(--c-background-primary);
    padding-top: 5rem;
    padding-left: 1rem;
    padding-right: 1rem;
    border-radius: 12px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.contact-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--c-border-primary);
    padding: 1.2rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-4px);
    border-color: var(--c-accent-primary);
    box-shadow: 0 0 18px rgba(99, 108, 255, 0.2);
}

.contact-icon {
    font-size: 1.8rem;
    color: var(--c-accent-primary);
}

.contact-info h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--c-text-primary);
}

.contact-info a {
    font-size: 0.95rem;
    color: var(--c-text-secondary);
    transition: color 0.3s ease;
    text-decoration: underline;
}

.contact-info a:hover {
    color: var(--c-accent-primary);
}

.testimonial-section {
    background: var(--c-background-primary);
    padding: 5rem 1rem;
    border-radius: 12px;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--c-border-primary);
    border-radius: 14px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 18px rgba(99, 108, 255, 0.08);
}

.testimonial-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 24px rgba(99, 108, 255, 0.2);
    border-color: var(--c-accent-primary);
}

.testimonial-avatar img {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--c-accent-primary);
    box-shadow: 0 2px 8px rgba(99, 108, 255, 0.2);
}

.testimonial-content {
    flex: 1;
}

.testimonial-quote {
    font-size: 1rem;
    font-style: italic;
    color: var(--c-text-secondary);
    margin-bottom: 1rem;
}

.testimonial-author {
    font-size: 0.95rem;
    color: var(--c-text-action);
    font-weight: 600;
}

.title-top {
    margin-top: 3rem;
}

/* === Footer === */

.site-footer {
    background: var(--c-background-primary);
    border-top: 1px solid var(--c-border-primary);
    margin-top: 5rem;
    padding: 3rem 1rem 2rem;
    position: relative;
}

.site-footer::before {
    content: "";
    position: absolute;
    top: -2px;
    left: 50%;
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, var(--c-accent-primary), #636CFF);
    transform: translateX(-50%);
    border-radius: 2px;
}

.footer h2 {
    text-align: center;
    font-size: 1.7rem;
    margin-bottom: 10px;
    color: #fff;
}

.footer p {
    text-align: center;
    font-size: 0.85rem;
    margin-bottom: 10px;
    color: var(--c-text-secondary);
}

.footer a {
    text-decoration: underline;
}