/* ==========================================
   VIS GALLERY - Neo Brutalism Design System
   ========================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Primary Colors */
    --color-black: #1a1a1a;
    --color-white: #fefefe;
    --color-yellow: #FFE156;
    --color-green: #A8E6CF;
    --color-pink: #FFB3BA;
    --color-blue: #B5B8FF;
    --color-orange: #FFDAC1;
    --color-red: #FF6B6B;
    --color-purple: #DDA0DD;
    --color-cyan: #87CEEB;

    /* Neutral Colors */
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-600: #525252;
    --color-gray-800: #262626;

    /* Borders */
    --border-width: 3px;
    --border-color: var(--color-black);

    /* Shadows */
    --shadow-offset: 6px;
    --shadow-brutal: var(--shadow-offset) var(--shadow-offset) 0 var(--color-black);
    --shadow-brutal-hover: 8px 8px 0 var(--color-black);
    --shadow-brutal-active: 2px 2px 0 var(--color-black);

    /* Typography */
    --font-primary: 'Space Grotesk', 'Noto Sans KR', sans-serif;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 70px;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-gray-100);
    color: var(--color-black);
    line-height: 1.6;
    min-height: 100vh;
}

/* ==========================================
   Video Intro Overlay
   ========================================== */
.intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.intro-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.intro-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.intro-content video {
    max-width: 90vw;
    max-height: 70vh;
    border: var(--border-width) solid var(--color-yellow);
    box-shadow: 12px 12px 0 var(--color-yellow);
}

.start-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
}

.intro-logo {
    max-width: 300px;
    max-height: 300px;
    border: var(--border-width) solid var(--color-yellow);
    box-shadow: 12px 12px 0 var(--color-yellow);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.start-btn {
    padding: var(--space-4) var(--space-12);
    background: var(--color-yellow);
    color: var(--color-black);
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 900;
    border: var(--border-width) solid var(--color-black);
    box-shadow: 8px 8px 0 var(--color-white);
    cursor: pointer;
    transition: all 0.2s ease;
}

.start-btn:hover {
    transform: translate(-4px, -4px);
    box-shadow: 12px 12px 0 var(--color-white);
}

.start-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 4px 4px 0 var(--color-white);
}

.video-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.skip-btn {
    padding: var(--space-3) var(--space-8);
    background: transparent;
    color: var(--color-white);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    border: var(--border-width) solid var(--color-white);
    cursor: pointer;
    transition: all 0.2s ease;
}

.skip-btn:hover {
    background: var(--color-yellow);
    color: var(--color-black);
    border-color: var(--color-yellow);
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0 var(--color-white);
}

/* ==========================================
   Header
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-yellow);
    border-bottom: var(--border-width) solid var(--border-color);
    z-index: 100;
}

.header-content {
    max-width: 100%;
    height: 100%;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: var(--space-1);
    font-weight: 900;
    font-size: 1.8rem;
}

.logo-bracket {
    color: var(--color-black);
}

.logo-text {
    color: var(--color-black);
    letter-spacing: -2px;
}

.logo-sub {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-600);
    margin-left: var(--space-2);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.search-box {
    display: flex;
    border: var(--border-width) solid var(--border-color);
    background: var(--color-white);
    box-shadow: var(--shadow-brutal);
}

.search-input {
    padding: var(--space-2) var(--space-4);
    border: none;
    font-family: var(--font-primary);
    font-size: 1rem;
    width: 250px;
    background: transparent;
}

.search-input:focus {
    outline: none;
}

.search-btn {
    padding: var(--space-2) var(--space-3);
    background: var(--color-black);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}

.search-btn:hover {
    background: var(--color-gray-800);
}

.view-toggle {
    display: flex;
    border: var(--border-width) solid var(--border-color);
    background: var(--color-white);
    box-shadow: var(--shadow-brutal);
}

.toggle-btn {
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
}

.toggle-btn:first-child {
    border-right: var(--border-width) solid var(--border-color);
}

.toggle-btn.active {
    background: var(--color-black);
    color: var(--color-white);
}

.toggle-btn:hover:not(.active) {
    background: var(--color-gray-200);
}

/* ==========================================
   Main Container
   ========================================== */
.main-container {
    display: flex;
    padding-top: var(--header-height);
    min-height: 100vh;
}

/* ==========================================
   Sidebar
   ========================================== */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--color-white);
    border-right: var(--border-width) solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    z-index: 50;
}

.sidebar.collapsed {
    transform: translateX(calc(-1 * var(--sidebar-width) + 40px));
}

.sidebar-header {
    padding: var(--space-4) var(--space-6);
    background: var(--color-green);
    border-bottom: var(--border-width) solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    background: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    cursor: pointer;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.sidebar.collapsed .sidebar-toggle {
    transform: rotate(180deg);
}

.sidebar-toggle:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.category-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4) 0;
}

.category-group {
    margin-bottom: var(--space-4);
}

.category-title {
    padding: var(--space-2) var(--space-6);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-gray-600);
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-6);
    cursor: pointer;
    transition: all 0.2s;
    border-left: 4px solid transparent;
}

.category-item:hover {
    background: var(--color-gray-100);
    border-left-color: var(--color-yellow);
}

.category-item.active {
    background: var(--color-yellow);
    border-left-color: var(--color-black);
    font-weight: 700;
}

.category-name {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.category-icon {
    font-size: 1.2rem;
}

.category-count {
    background: var(--color-gray-200);
    padding: var(--space-1) var(--space-2);
    font-size: 0.75rem;
    font-weight: 700;
    border: 2px solid var(--border-color);
}

.category-item.active .category-count {
    background: var(--color-white);
}

.sidebar-footer {
    padding: var(--space-4) var(--space-6);
    background: var(--color-pink);
    border-top: var(--border-width) solid var(--border-color);
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4);
    background: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-brutal);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================
   Gallery Container
   ========================================== */
.gallery-container {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-6);
    transition: margin-left 0.3s ease;
}

.sidebar.collapsed~.gallery-container {
    margin-left: 40px;
}

.gallery-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.gallery-header h1 {
    font-size: 2rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.item-count {
    font-size: 1.2rem;
    color: var(--color-gray-600);
}

.sort-options {
    margin-left: auto;
}

.sort-select {
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    border: var(--border-width) solid var(--border-color);
    background: var(--color-white);
    box-shadow: var(--shadow-brutal);
    cursor: pointer;
}

.sort-select:focus {
    outline: none;
    box-shadow: var(--shadow-brutal-hover);
}

/* ==========================================
   Gallery Grid
   ========================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-6);
}

.gallery-grid.list-view {
    grid-template-columns: 1fr;
}

/* ==========================================
   Gallery Card
   ========================================== */
.gallery-card {
    background: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-brutal);
    cursor: pointer;
    transition: all 0.2s ease;
    overflow: hidden;
}

.gallery-card:hover {
    transform: translate(-4px, -4px);
    box-shadow: 10px 10px 0 var(--color-black);
}

.card-image-container {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-bottom: var(--border-width) solid var(--border-color);
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.gallery-card:hover .card-image {
    transform: scale(1.05);
}

.card-badge {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border: 2px solid var(--border-color);
}

.badge-web {
    background: var(--color-blue);
}

.badge-mobile {
    background: var(--color-green);
}

.badge-desktop {
    background: var(--color-orange);
}

.badge-api {
    background: var(--color-pink);
}

.badge-ai {
    background: var(--color-purple);
}

.badge-other {
    background: var(--color-cyan);
}

.card-content {
    padding: var(--space-4);
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-2);
    line-height: 1.3;
}

.card-description {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    margin-bottom: var(--space-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-3);
    border-top: 2px dashed var(--color-gray-200);
}

.card-category {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-gray-600);
    text-transform: uppercase;
}

.card-date {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

/* List View Styles */
.gallery-grid.list-view .gallery-card {
    display: flex;
}

.gallery-grid.list-view .card-image-container {
    width: 250px;
    min-width: 250px;
    height: auto;
    border-bottom: none;
    border-right: var(--border-width) solid var(--border-color);
}

.gallery-grid.list-view .card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ==========================================
   Empty State
   ========================================== */
.empty-state {
    text-align: center;
    padding: var(--space-12);
    background: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-brutal);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
}

.empty-state p {
    color: var(--color-gray-600);
}

/* ==========================================
   Load More
   ========================================== */
.load-more {
    text-align: center;
    padding: var(--space-8) 0;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none;
    border: var(--border-width) solid var(--border-color);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-primary {
    background: var(--color-yellow);
    color: var(--color-black);
    box-shadow: var(--shadow-brutal);
}

.btn-primary:hover {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-brutal-hover);
}

.btn-primary:active {
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-brutal-active);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-black);
    box-shadow: var(--shadow-brutal);
}

.btn-secondary:hover {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-brutal-hover);
    background: var(--color-gray-100);
}

/* ==========================================
   Modal
   ========================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: var(--space-4);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    box-shadow: 12px 12px 0 var(--color-black);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    background: var(--color-red);
    color: var(--color-white);
    border: var(--border-width) solid var(--border-color);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--color-black);
    transform: rotate(90deg);
}

.modal-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.modal-image-container {
    position: relative;
    border-right: var(--border-width) solid var(--border-color);
}

.modal-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 300px;
}

.modal-badge {
    position: absolute;
    bottom: var(--space-4);
    left: var(--space-4);
    padding: var(--space-2) var(--space-4);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    background: var(--color-yellow);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-brutal);
}

.modal-info {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
}

.modal-info h2 {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.modal-description {
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
    line-height: 1.8;
}

.modal-meta {
    flex: 1;
}

.meta-item {
    margin-bottom: var(--space-4);
}

.meta-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-gray-600);
    margin-bottom: var(--space-1);
}

.meta-value {
    font-weight: 600;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.tech-tag {
    padding: var(--space-1) var(--space-2);
    background: var(--color-gray-100);
    border: 2px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 600;
}

.modal-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

/* ==========================================
   Toast
   ========================================== */
.toast {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    padding: var(--space-4) var(--space-6);
    background: var(--color-black);
    color: var(--color-white);
    border: var(--border-width) solid var(--color-green);
    box-shadow: var(--shadow-brutal);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transform: translateX(150%);
    transition: transform 0.3s ease;
    z-index: 300;
}

.toast.active {
    transform: translateX(0);
}

.toast-icon {
    font-size: 1.2rem;
    color: var(--color-green);
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .gallery-container {
        margin-left: 0;
    }

    .modal-content {
        grid-template-columns: 1fr;
    }

    .modal-image-container {
        border-right: none;
        border-bottom: var(--border-width) solid var(--border-color);
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 var(--space-4);
    }

    .logo-sub {
        display: none;
    }

    .search-input {
        width: 150px;
    }

    .gallery-header h1 {
        font-size: 1.5rem;
    }

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

    .gallery-grid.list-view .gallery-card {
        flex-direction: column;
    }

    .gallery-grid.list-view .card-image-container {
        width: 100%;
        border-right: none;
        border-bottom: var(--border-width) solid var(--border-color);
    }
}

@media (max-width: 480px) {
    .view-toggle {
        display: none;
    }

    .search-box {
        flex: 1;
    }

    .search-input {
        width: 100%;
    }
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.gallery-card {
    animation: fadeInUp 0.4s ease forwards;
}

.gallery-card:nth-child(1) {
    animation-delay: 0.05s;
}

.gallery-card:nth-child(2) {
    animation-delay: 0.1s;
}

.gallery-card:nth-child(3) {
    animation-delay: 0.15s;
}

.gallery-card:nth-child(4) {
    animation-delay: 0.2s;
}

.gallery-card:nth-child(5) {
    animation-delay: 0.25s;
}

.gallery-card:nth-child(6) {
    animation-delay: 0.3s;
}

.gallery-card:nth-child(7) {
    animation-delay: 0.35s;
}

.gallery-card:nth-child(8) {
    animation-delay: 0.4s;
}

.gallery-card:nth-child(9) {
    animation-delay: 0.45s;
}

.gallery-card:nth-child(10) {
    animation-delay: 0.5s;
}

/* ==========================================
   Featured & Live Styles
   ========================================== */
.gallery-card.featured {
    border-color: var(--color-red);
    border-width: 4px;
    box-shadow: 8px 8px 0 var(--color-red);
}

.gallery-card.featured:hover {
    box-shadow: 12px 12px 0 var(--color-red);
}

.live-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--color-black);
    color: var(--color-white);
    border: 2px solid var(--color-red);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* Features List in Modal */
.features-list {
    list-style: none;
    padding: 0;
    margin: var(--space-2) 0 0 0;
}

.features-list li {
    padding: var(--space-1) 0;
    padding-left: var(--space-4);
    position: relative;
    font-size: 0.9rem;
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: bold;
}