/* Global */
:root {
    /* Colors - Sophisticated Dark Palette */
    --color-bg: #0a0a0a;
    --color-bg-secondary: #121212;
    --color-text: #e0e0e0;
    --color-text-muted: #a0a0a0;

    --color-primary: #B2A5FF;
    /* Violet */
    --color-primary-glow: rgba(120, 95, 162, 0.5);

    --color-accent: #3b82f6;
    /* Blue */
    --color-accent-glow: rgba(59, 130, 246, 0.5);

    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);

    /* Spacing & Layout */
    --max-width: 1200px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    /* Animation */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;

    /* Legacy/Trivision Variables (Keep for now or refactor later) */
    --panel-width: 100px;
    --panel-height: 400px;
    --duration: 900ms;
    --radius: calc(var(--panel-width) / 3);
    --corners: 15px;
}

.bebas-neue {
    font-family: "Bebas Neue", 'Presentation';
    font-weight: 400;
    font-style: normal;
}

.material-symbols-outlined {
    font-size: 28px;
    margin-top: 10px;
    font-variation-settings:
        'FILL' 0,
        'wght' 400,
        'GRAD' 0,
        'opsz' 24
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: 'Presentation', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-text-muted);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Typing cursor */
.cursor {
    display: inline-block;
    margin-left: 4px;
    animation: blink 1s infinite;
    font-weight: 300;
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* Fade Up */
.fade-up {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 1.8s;
}

.fade-up.delay {
    animation-delay: 2.2s;
}

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


.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    overflow: hidden;
}

/* Content */
.hero__content {
    max-width: 900px;
    text-align: center;
    z-index: 1;
}

.hero__title {
    font-size: clamp(3rem, 7vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.hero__subtitle {
    margin-top: 16px;
    font-size: 1.5rem;
    opacity: 0.8;
    color: var(--color-text-muted);
    font-weight: 300;
}


.hero__actions {
    margin-top: 48px;
    display: flex;
    justify-content: center;
    gap: 16px;
}

.home__btn {
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.home__btn.primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px 0 var(--color-primary-glow);
}

.home__btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.home__btn.ghost {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--color-text);
    backdrop-filter: blur(4px);
}

.home__btn.ghost:hover {
    background: var(--glass-bg);
    border-color: var(--color-text);
}


.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.7;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: 20px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    width: 4px;
    height: 4px;
    background: var(--color-text);
    border-radius: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% {
        opacity: 0;
        transform: translate(-50%, 0);
    }

    30% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: translate(-50%, 12px);
    }
}

/* Common */
.section {
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
}

.title {
    text-align: center;
    font-size: 3.5rem;
    margin-bottom: 3rem;
    font-family: 'Bebas Neue', 'Presentation', sans-serif;
    letter-spacing: 2px;
    background: linear-gradient(to right, #fff, #a5a5a5);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.sub-title {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem;
}

.description {
    font-size: 1.25rem;
    margin: 1rem auto;
    max-width: 800px;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.max-container {
    max-width: var(--max-width);
    margin: auto;
    padding: 0 1rem;
}

.modal-title {
    font-weight: 700;
    color: var(--color-bg);
}

.modal-content {
    width: 800px;
    position: relative;
    left: 40%;
    transform: translateX(-40%);
    color: var(--color-bg);
}


/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--header-height);
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: all var(--transition-medium);
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

.header--dark {
    background: rgba(10, 10, 10, 0.9);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.header__logo__img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
}

.header__toggle {
    display: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
}

.header__menu {
    display: flex;
    gap: 32px;
}

.header__menu__item {
    display: block;
    font-family: 'Bebas Neue', 'Presentation', sans-serif;
    text-decoration: none;
    font-size: 1.25rem;
    color: var(--color-text-muted);
    letter-spacing: 1px;
    position: relative;
    padding: 4px 0;
}

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

.header__menu__item:hover {
    color: var(--color-text);
}

.header__menu__item:hover::after {
    width: 100%;
}

.header__menu__item.active {
    color: var(--color-text);
}


/* Trivision */

.trivision {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.wrap {
    max-width: 1000px;
    margin: 40px auto;
    padding: 20px;
}


.stage {
    perspective: 1000px;
    padding: 20px;
    background: #121826;
    border-radius: var(--corners);
}

.pillar {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 1s ease-in-out;
}

.unit {
    width: var(--panel-width);
    height: var(--panel-height);
    transform-style: preserve-3d;
    transform: rotateY(var(--angle, 0deg));
    transition: transform var(--duration) cubic-bezier(.2, .7, .2, 1);
    position: relative;
    cursor: pointer;
}

.face {
    position: absolute;
    inset: 0;
    width: var(--panel-width);
    height: var(--panel-height);
    backface-visibility: hidden;
    border-radius: var(--corners);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 60px;
    font-weight: bold;
    color: white;
}

.face.f1 {
    transform: rotateY(0deg) translateZ(var(--radius));
    background: white;
    color: #4062ff;
    font-size: 9rem;
}

.face.f2 {
    transform: rotateY(120deg) translateZ(var(--radius));
    background: black;
    color: white;
    font-size: 2rem;
}

.face.f3 {
    transform: rotateY(240deg) translateZ(var(--radius));
    background: #ff7b55;
    font-size: 3rem;
}

.btns {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

button {
    background: #1c2437;
    border: 1px solid rgba(255, 255, 255, .1);
    color: #fff;
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
}

/* About */
.home__section {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: left;
    flex-wrap: wrap;
    margin: 4rem;
}

.home__profile {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--color-bg-secondary);
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.3);
    transition: transform var(--transition-medium);
}

.home__profile:hover {
    transform: scale(1.02);
    box-shadow: 0 0 30px rgba(124, 58, 237, 0.5);
}

.home__title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: 700;
}

.home__title--strong {
    color: var(--color-primary);
    background: linear-gradient(120deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.home__info {
    margin-top: 20px;
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.home__info li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.home__info i,
.home__info span.material-symbols-outlined {
    color: var(--color-primary) !important;
    font-size: 1.4rem;
    width: 30px;
    text-align: center;
}

.home__info span {
    color: var(--color-text) !important;
}

.jobs {
    max-width: 600px;
    margin: 5 auto;
    background: var(--color-bg-secondary);
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    margin-top: 2rem;
}

.job {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--glass-border);
}

.jobs:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    transition: all var(--transition-medium);
}

.job:last-child {
    border-bottom: none;
}

.job .image {
    width: 80px;
    height: 80px;
    object-fit: contain;
    background: #fff;
    border-radius: 50%;
    padding: 8px;
    margin: 0;
}

.job__name {
    color: var(--color-text);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.job__period {
    color: var(--color-text-muted);
    font-size: 1.0rem;
}

/* Skills */
.skills-section {
    padding: 6rem 2rem;
    background: var(--color-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.skill-card {
    background: var(--color-bg-secondary);
    padding: 2rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.skill-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.skill-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.75rem;
}

.badge-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.badge {
    padding: 8px 16px;
    font-size: 0.95rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text-muted);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-fast);
}

.badge:hover {
    background: var(--color-primary-glow);
    color: #fff;
    border-color: var(--color-primary);
    transform: scale(1.05);
}

// 여기


.skills {
    display: flex;
    justify-content: center;
    align-items: stretch;
    margin: 2rem 3rem;
    border-radius: 10px;
    overflow: hidden;
}

.skills__title {
    color: aliceblue;
    margin: 0.5rem 0;
    font-size: 2rem;
}

.skills__list {
    display: block;
    color: aliceblue;
    font-size: 20px;
}

.skills__coding {
    width: 680px;
    padding: 2rem;
    background-color: var(--color-primary);
    border-radius: 10px;
    margin: 0 1rem 2rem 0;
    display: flex;
    justify-content: center;
}

.skills_badge_title {
    margin-bottom: 10px;
    font-family: 'Bebas Neue', 'Presentation';
    font-size: 2rem;
}

.skills_badge {
    display: inline-block;
    background-color: #f3f4f6;
    padding: 3px 3px;
    border-radius: 12px;
    border: solid #ccc;
    font-family: 'Bebas Neue', 'Presentation';
    white-space: nowrap;
    font-size: 1.5rem;
}

.skills_tools {
    padding: 1rem;
}

.skills__etc {
    padding: 1rem;
    background-color: #3437db;
}


.bar {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    gap: 0.5rem;
}

.bar__metadata {
    display: flex;
    justify-content: space-between;
}

.bar__bg {
    width: 100%;
    height: 5px;
    background-color: var(--color-black);
}

.bar__value {
    height: 5px;
    background-color: var(--color-accent-variant);
}


/* Projects */
.categories {
    display: flex;
    justify-content: center;
    margin: 2.5rem 0;
    gap: 1rem;
    flex-wrap: wrap;
}

.category {
    position: relative;
    color: var(--color-text-muted);
    background: transparent;
    font-size: 1.1rem;
    padding: 0.5rem 2rem;
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
    border: 1px solid var(--glass-border);
}

.category--selected,
.category:hover {
    background: var(--color-primary-glow);
    color: #fff;
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    transition: all 250ms ease-out;
    opacity: 1;
}

.projects.anim-out {
    opacity: 0;
    transform: scale(0.96) translateY(20px);
}

.project {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    transition: transform var(--transition-medium);
}

.project:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.project img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

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

.project__content {
    padding: 1.5rem;
}

.carousel-item img {
    height: 250px;
    object-fit: cover;
    width: 100%;
    z-index: 0;
}

.carousel-indicators [data-bs-target] {
    background-color: var(--color-primary);
}


.project-badge {
    padding: 8px 20px;
    font-size: 1rem;
    border-radius: 999px;
    transition: all var(--transition-fast);
    margin-top: 1rem;
    background: var(--color-primary-glow);
    color: #fff;
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.project-badge:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

.project-text {
    margin-top: 1rem;
}


/* Footer */
footer {
    background: var(--color-bg-secondary);
    padding: 4rem 2rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

footer a {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    transition: color var(--transition-fast);
}

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

footer i {
    font-size: 1.5rem;
    margin-right: 8px;
}

/* Responsive */
@media screen and (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    .title {
        font-size: 2.5rem;
    }

    .hero__title {
        font-size: 3.5rem;
    }

    .header {
        background: rgba(10, 10, 10, 0.95);
    }

    .header__menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-bg);
        padding: 2rem;
        border-bottom: 1px solid var(--glass-border);
    }

    .header__menu.open {
        display: flex;
    }

    .header__toggle {
        display: block;
    }

    .home__section {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .home__info {
        margin-left: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

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