/*
 * Final CSS Refactor - Duplicates Removed
 * Goal: Clean, DRY (Don't Repeat Yourself), and well-organized CSS.
 * No changes to functionality, visual style, colors, or fonts.
 * All original animations, responsive behaviors, and specific class styles are preserved.
 */

/* * -------------------
 * 1. Font & Base Styles
 * -------------------
 */

@font-face {
    font-family: 'DotGothic16';
    src: url('/static/fonts/DotGothic16-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

:root {
    /* Colors */
    --color-bg: rgb(242, 242, 242);
    --color-text-main: rgb(83, 83, 83);
    --color-text-secondary: #666;
    --color-text-title: #333;
    --color-border: rgb(83, 83, 83);
    --color-bg-frame-header: #f0f0f0;
    --color-bg-project-item: #f9f9f9;
    --color-bg-white: #fff;
    --color-bg-hover: #e8e8e8;
    --color-bg-active: #ddd;

    /* Buttons */
    --color-btn-close: #ff5f56;
    --color-btn-minimize: #ffbd2e;
    --color-btn-maximize: #27ca3f;
    --color-bg-python: #ffd43b;
    --color-text-python: #3776ab;
    --color-bg-mysql: #00758f;
    --color-bg-fastapi: #009688;

    /* Fonts */
    --font-main: 'DotGothic16', 'JetBrains Mono', monospace;
    --font-mono: 'Courier New', monospace;

    /* Spacing */
    --spacing-1: 8px;
    --spacing-2: 10px;
    --spacing-3: 15px;
    --spacing-4: 20px;
    --spacing-5: 30px;
    --spacing-6: 40px;

    /* Shadows */
    --shadow-main: 4px 4px 0px var(--color-border);
    --shadow-project-hover: 3px 3px 0px var(--color-border);
    --shadow-project-item: 1px 1px 0px var(--color-border);
    --shadow-inset-light: inset 1px 1px 0px #fff;
    --shadow-inset-dark: inset -1px -1px 0px #999;
}

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

body {
    background-color: var(--color-bg);
    background-image:
        linear-gradient(rgba(200, 200, 200, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(200, 200, 200, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    color: var(--color-text-main);
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    padding: var(--spacing-4);
}

/* * -------------------
 * 2. Animations
 * -------------------
 */

@keyframes typewriter {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(var(--spacing-5));
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(var(--spacing-4));
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes macClick {
    0% { transform: translate(0, 0); }
    50% { transform: translate(1px, 1px); }
    100% { transform: translate(0, 0); }
}

@keyframes zoom {
    from { transform: scale(0.1); }
    to { transform: scale(1); }
}

/* * -------------------
 * 3. Layout & Structure
 * -------------------
 */

.intro-section {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: transform 0.8s ease-out, opacity 0.8s ease-out;
}

.intro-section.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.intro-text {
    text-align: center;
    max-width: 800px;
    padding: 0 var(--spacing-4);
}

.main-content {
    min-height: 200vh;
    padding-top: 100vh;
}

.portfolio-frame {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-4);
    min-height: 100vh;
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s ease-out;
    border: 3px solid var(--color-border);
    border-radius: 0;
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-main);
}

.portfolio-frame.visible {
    opacity: 1;
    transform: translateY(0);
}

.frame-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 2px solid var(--color-border);
    background-color: var(--color-bg-frame-header);
    border-radius: 0;
}

.nav-container {
    display: flex;
    justify-content: center;
    gap: 20px; /* 이 값을 원하는 만큼 늘리거나 줄이세요. */
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-2);
    background-color: var(--color-bg-frame-header);
    border: 2px solid var(--color-border);
    flex-wrap: wrap;
    box-shadow: 2px 2px 0px var(--color-border);
}

.content-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-4);
    background-color: var(--color-bg-white);
    border: 3px solid var(--color-border);
    box-shadow: var(--shadow-main);
}

.section {
    display: none;
}

.section.active {
    display: block;
}

.profile-section, .bottom-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-5);
    margin-bottom: var(--spacing-5);
}

.profile-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.profile-right {
    display: flex;
    align-items: center;
}

/* * -------------------
 * 4. Typography
 * -------------------
 */

h2 {
    color: var(--color-text-title);
    margin-bottom: var(--spacing-5);
    font-size: 25px;
    border-bottom: 2px solid var(--color-text-title);
    padding-bottom: var(--spacing-2);
    text-align: center;
}

h3 {
    color: var(--color-text-secondary);
    margin: var(--spacing-4) 0 var(--spacing-2) 0;
    font-size: 18px;
    font-weight: bold;
}

.main-quote {
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    color: var(--color-text-title);
    margin-bottom: var(--spacing-5);
    font-weight: 700;
    line-height: 1.2;
    animation: typewriter 3s steps(40) 1s both;
    white-space: nowrap;
    overflow: hidden;
    border-right: 3px solid var(--color-text-title);
}

.sub-text {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--color-text-main);
    margin-bottom: var(--spacing-6);
    animation: fadeInUp 1s ease-out 4s both;
    white-space: nowrap; /* <-- 이 코드를 추가 */
}

.scroll-hint {
    font-size: 14px;
    color: var(--color-text-secondary);
    animation: fadeInUp 1s ease-out 5s both, bounce 2s ease-in-out 6s infinite;
}

.scroll-arrow {
    margin-top: var(--spacing-3);
    font-size: 26px;
    color: var(--color-text-title);
    animation: bounce 2s ease-in-out 6s infinite;
}

.frame-title {
    color: var(--color-text-title);
    font-size: 19px;
    font-weight: bold;
}

.profile-name {
    font-size: 20px;
    font-weight: bold;
    color: var(--color-text-main);
    text-align: center;
    background-color: var(--color-bg-frame-header);
    padding: var(--spacing-1) var(--spacing-4);
    border: 2px solid var(--color-border);
    box-shadow: 2px 2px 0px var(--color-border);
}

.profile-image {
    width: 200px;
    height: 250px;
    border: 3px solid var(--color-border);
    box-shadow: var(--shadow-main);
    object-fit: cover;
    margin-bottom: var(--spacing-3);
}

/* * -------------------
 * 5. Components & Cards
 * -------------------
 */

.btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.btn.close { background-color: var(--color-btn-close); }
.btn.minimize { background-color: var(--color-btn-minimize); }
.btn.maximize { background-color: var(--color-btn-maximize); }

.frame-buttons {
    display: flex;
    gap: var(--spacing-1);
}

/* Button Base Styles - Used by nav-btn and help-button */
.nav-btn, .help-button {
    padding: var(--spacing-2) 18px;
    background: linear-gradient(145deg, #ffffff, #e6e6e6);
    border: 2px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-main);
    font-family: inherit;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.1s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 0 var(--color-border), 0 6px 8px rgba(0, 0, 0, 0.2);
    position: relative;
    top: 0;
}

.nav-btn:hover, .help-button:hover {
    background: linear-gradient(145deg, #f0f0f0, #d9d9d9);
    transform: translateY(1px);
    box-shadow: 0 3px 0 var(--color-border), 0 4px 6px rgba(0, 0, 0, 0.2);
}

.nav-btn:active, .help-button:active {
    transform: translateY(3px);
    box-shadow: 0 1px 0 var(--color-border), 0 2px 4px rgba(0, 0, 0, 0.2);
}

.nav-btn.active {
    background: linear-gradient(145deg, #d9d9d9, #b3b3b3);
    color: var(--color-text-main);
    transform: translateY(2px);
    box-shadow: 0 2px 0 var(--color-border), inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.project-item {
    padding: var(--spacing-4);
    background-color: var(--color-bg-project-item);
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-project-item);
    transition: all 0.2s ease;
    height: 100%;
}

.project-item:hover {
    box-shadow: var(--shadow-project-hover);
    transform: translate(-1px, -1px);
}

.project-title {
    color: var(--color-text-main);
    font-weight: bold;
    margin-bottom: var(--spacing-3);
    font-size: 19px;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-2);
}

.project-desc {
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

.tech-stack {
    color: var(--color-text-main);
    font-size: 15px;
    margin-top: var(--spacing-1);
    font-weight: bold;
    background-color: #e0e0e0;
    padding: 4px var(--spacing-1);
    border: 1px solid var(--color-border);
    display: inline-block;
    box-shadow: var(--shadow-project-item);
}

.error, .success, .warning {
    color: var(--color-text-main);
    padding: 12px 16px;
    background-color: var(--color-bg-frame-header);
    border: 2px solid var(--color-border);
    box-shadow: 2px 2px 0px var(--color-border);
    font-weight: bold;
    text-align: center;
    margin-bottom: var(--spacing-5);
}

/* * -------------------
 * 6. Resume & Modal
 * -------------------
 */

.resume-clickable {
    cursor: pointer;
    position: relative;
    background-image: url('/static/images/resume.jpg');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    width: 350px;
    height: 500px;
    border: none;
    box-shadow: none;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding-bottom: 20px;
    transition: transform 0.2s ease;
}

.resume-clickable:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.resume-clickable:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--color-text-title), inset 1px 1px 0px #999, inset -1px -1px 0px #fff;
    background: var(--color-bg-active);
}

.resume-clickable.clicked {
    animation: macClick 0.15s ease-out;
}

.resume-clickable .project-title {
    font-family: var(--font-mono);
    font-size: 17px;
    font-weight: bold;
    color: var(--color-text-title);
    margin-bottom: 6px;
    position: relative;
    letter-spacing: 0.5px;
    border-bottom: none;
    padding-bottom: 0;
}

.resume-clickable .project-title::before {
    content: '◉';
    color: var(--color-text-secondary);
    margin-right: 6px;
    font-size: 14px;
}

.resume-clickable .project-desc {
    font-family: var(--font-mono);
    font-size: 14px;
    color: #555;
    margin-bottom: var(--spacing-1);
    position: relative;
    line-height: 1.3;
}

.resume-clickable .project-desc::after {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background-image: repeating-linear-gradient(to right,
        #999 0px,
        #999 2px,
        transparent 2px,
        transparent 6px);
    margin-top: 6px;
}

.resume-clickable .tech-stack {
    font-family: var(--font-mono);
    font-size: 12px;
    color: #777;
    margin-bottom: 12px;
    font-weight: bold;
    background-color: transparent;
    padding: 0;
    border: none;
    box-shadow: none;
    display: block;
}

.resume-clickable .tech-stack::before {
    content: '▪';
    color: #999;
    margin-right: 6px;
    font-size: 12px;
}

.click-hint {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-title);
    background: #f8f8f8;
    border: 2px solid var(--color-text-title);
    border-radius: 4px;
    padding: 4px var(--spacing-1);
    text-align: center;
    font-weight: bold;
    opacity: 0;
    transform: translateY(5px);
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 2px 2px 0px var(--color-text-title), var(--shadow-inset-light), var(--shadow-inset-dark);
}

.resume-clickable:hover .click-hint {
    opacity: 1;
    transform: translateY(0);
}

.resume-image-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.resume-image-container.visible {
    opacity: 1;
    visibility: visible;
}

.resume-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-white);
    border: 3px solid var(--color-border);
    box-shadow: 8px 8px 0px var(--color-border);
    padding: var(--spacing-5);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.resume-image-container.visible .resume-image-wrapper {
    transform: scale(1);
}

.image-container {
    position: relative;
    width: 100%;
    height: 85%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.resume-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-main);
    transition: opacity 0.3s ease;
}

.resume-image.loading {
    opacity: 0.5;
}

.close-resume-btn {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 45px;
    height: 45px;
    background-color: var(--color-border);
    color: var(--color-bg-white);
    border: none;
    border-radius: 50%;
    font-size: 26px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 0px rgba(83, 83, 83, 0.5);
    z-index: 10;
}

.close-resume-btn:hover {
    background-color: var(--color-btn-close);
    transform: scale(1.1);
}

#resume-section h3 {
    text-align: center;
}

/* * -------------------
 * 7. Resume Modal Navigation
 * -------------------
 */

.page-indicator {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    background-color: rgba(83, 83, 83, 0.8);
    color: var(--color-bg-white);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--spacing-4);
    font-size: 14px;
    font-weight: bold;
}

.nav-btn-resume {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 55px;
    height: 55px;
    background-color: rgba(83, 83, 83, 0.8);
    color: var(--color-bg-white);
    border: none;
    font-size: 26px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn-resume:hover {
    background-color: var(--color-border);
    transform: translateY(-50%) scale(1.1);
}

.nav-btn-resume:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.nav-btn-resume:disabled:hover {
    transform: translateY(-50%) scale(1);
}

.prev-btn { left: var(--spacing-4); }
.next-btn { right: var(--spacing-4); }

.thumbnail-nav {
    position: absolute;
    bottom: var(--spacing-4);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-2);
    background-color: rgba(83, 83, 83, 0.8);
    padding: var(--spacing-2);
    border-radius: var(--spacing-5);
}

.thumbnail-item {
    width: 55px;
    height: 75px;
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: 5px;
    overflow: hidden;
    transition: all 0.2s ease;
    opacity: 0.7;
}

.thumbnail-item:hover {
    opacity: 1;
    transform: scale(1.1);
}

.thumbnail-item.active {
    border-color: var(--color-bg-white);
    opacity: 1;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.keyboard-hint {
    position: absolute;
    bottom: 110px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.5);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--spacing-3);
}

/* * -------------------
 * 8. Tech & Skills
 * -------------------
 */

.tech-stack-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-3);
    margin-top: var(--spacing-3);
}

.tech-card {
    background-color: var(--color-bg-white);
    border: 3px solid var(--color-border);
    padding: var(--spacing-4) var(--spacing-3);
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 0px var(--color-border);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    user-select: none;
}

.tech-card::after {
    content: "クリックして熟練度を確認してください";
    position: absolute;
    bottom: 1px;
    right: 8px;
    font-size: 12px;
    color: #bbb;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tech-card:hover::after {
    opacity: 1;
}

.tech-card:hover {
    box-shadow: var(--shadow-main);
    transform: translate(-1px, -1px);
}

.tech-icon {
    width: 45px;
    height: 45px;
    margin: 0 auto 12px auto;
    background-color: var(--color-bg-frame-header);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: bold;
    color: var(--color-text-main);
    box-shadow: var(--shadow-project-item);
}

.tech-card.python .tech-icon {
    background-color: transparent;
    color: transparent;
    background-image: url('/static/images/Python_logo.png');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.tech-card.mysql .tech-icon {
    background-color: var(--color-bg-mysql);
    color: var(--color-bg-white);
}

.tech-card.fastapi .tech-icon {
    background-color: var(--color-bg-fastapi);
    color: var(--color-bg-white);
}

.tech-name {
    font-size: 18px;
    font-weight: bold;
    color: var(--color-text-main);
    margin-bottom: var(--spacing-1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech-desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.skill-level {
    margin-top: var(--spacing-2);
    text-align: left;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

.skill-level.show {
    max-height: 50px;
    opacity: 1;
}

.skill-bar {
    width: 100%;
    height: 6px;
    background-color: #e0e0e0;
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background-color: var(--color-border);
    width: 0;
    transition: width 0.8s ease-in-out 0.2s;
}

.tech-card.python.show-skill .skill-fill { width: 50%; }
.tech-card.mysql.show-skill .skill-fill { width: 45%; }
.tech-card.fastapi.show-skill .skill-fill { width: 45%; }

/* * -------------------
 * 9. Project Components
 * -------------------
 */

.project-overview {
    margin-top: var(--spacing-5);
    padding: var(--spacing-5);
    border: 2px solid var(--color-border);
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-project-item);
}

.project-overview h3 {
    color: var(--color-text-title);
    margin-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-2);
    font-size: 18px;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-3);
    background-color: var(--color-bg-frame-header);
    border: 2px solid var(--color-border);
}

.overview-item {
    font-size: 14px;
    color: var(--color-text-main);
    padding: var(--spacing-1);
}

.overview-item strong {
    color: var(--color-text-title);
}

.project-description, .tech-overview, .core-features {
    margin-bottom: var(--spacing-4);
}

.project-description p, .tech-overview p, .core-features p {
    margin-bottom: var(--spacing-2);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.tech-overview ul, .core-features ul {
    margin-left: var(--spacing-4);
    color: var(--color-text-secondary);
}

.tech-overview li, .core-features li {
    margin-bottom: var(--spacing-1);
    line-height: 1.6;
}

/* Project Sections */
.project-sections {
    margin-top: var(--spacing-5);
}

.project-section-item {
    margin-bottom: var(--spacing-3);
    border: 2px solid var(--color-border);
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-project-item);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--color-bg-frame-header);
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--color-border);
}

.section-header:hover {
    background-color: var(--color-bg-hover);
}

.section-header.modal-trigger {
    background: linear-gradient(145deg, #e8f4fd, #d1e7fc);
    border-left: 4px solid #2196F3;
}

.section-header.modal-trigger:hover {
    background: linear-gradient(145deg, #d1e7fc, #bbdbfb);
    transform: translateX(2px);
}

.section-icon {
    font-size: 18px;
    margin-right: var(--spacing-2);
}

.section-title {
    font-size: 16px;
    font-weight: bold;
    color: var(--color-text-main);
    flex: 1;
}

.toggle-icon {
    font-size: 12px;
    color: var(--color-text-secondary);
    transition: transform 0.3s ease;
}

.section-header.active .toggle-icon {
    transform: rotate(180deg);
}

.modal-hint {
    font-size: 12px;
    color: #2196F3;
    font-weight: normal;
    font-style: italic;
}

.section-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 var(--spacing-4);
}

.section-content.active {
    max-height: 9999px;
    padding: var(--spacing-4);
}

.content-placeholder {
    color: var(--color-text-secondary);
    font-style: italic;
    padding: var(--spacing-3);
    background-color: var(--color-bg-frame-header);
    border: 1px dashed var(--color-border);
    text-align: center;
}

/* Debug Timeline Styles */
.debug-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.timeline-item {
    display: flex;
    align-items: center;
}

.timeline-btn {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: linear-gradient(145deg, #ffffff, #e6e6e6);
    border: 2px solid var(--color-border);
    color: var(--color-text-main);
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    box-shadow: var(--shadow-project-item);
}

.timeline-btn:hover {
    background: linear-gradient(145deg, #f0f0f0, #d9d9d9);
    transform: translateX(2px);
    box-shadow: var(--shadow-project-hover);
}

.timeline-btn:active {
    transform: translateX(1px);
    box-shadow: 1px 1px 0px var(--color-border);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-top: var(--spacing-3);
}

.result-item {
    text-align: center;
    padding: var(--spacing-4);
    background-color: var(--color-bg-frame-header);
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-project-item);
}

.result-item h4 {
    color: var(--color-text-title);
    margin-bottom: var(--spacing-3);
    font-size: 16px;
}

/* Button Styles for Demo, Site, Screenshot */
.demo-btn, .site-btn, .screenshot-btn {
    padding: var(--spacing-2) var(--spacing-3);
    border: 2px solid var(--color-border);
    background: linear-gradient(145deg, #ffffff, #e6e6e6);
    color: var(--color-text-main);
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-project-item);
}

.demo-btn:hover, .site-btn:hover, .screenshot-btn:hover {
    background: linear-gradient(145deg, #f0f0f0, #d9d9d9);
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-project-hover);
}

.site-btn {
    background: linear-gradient(145deg, #e8f5e8, #d4e8d4);
    border-color: #4CAF50;
    color: #2E7D32;
}

.site-btn:hover {
    background: linear-gradient(145deg, #d4e8d4, #c8e6c8);
}

/* Project Details Styles */
.project-details {
    margin-top: var(--spacing-5);
    padding: var(--spacing-4);
    border: 2px solid var(--color-border);
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-project-item);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3);
}

.detail-card {
    background: var(--color-bg-frame-header);
    border: 2px solid var(--color-border);
    padding: var(--spacing-4);
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 0px var(--color-border);
    position: relative;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.detail-card.clickable-card {
    cursor: pointer;
    user-select: none;
}

.detail-card.clickable-card:hover {
    box-shadow: var(--shadow-main);
    transform: translate(-1px, -1px);
    background: var(--color-bg-hover);
}

.detail-card.clickable-card:active {
    transform: translate(1px, 1px);
    box-shadow: var(--shadow-project-item);
}

.detail-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-2);
}

.detail-title {
    font-size: 16px;
    font-weight: bold;
    color: var(--color-text-main);
    margin-bottom: var(--spacing-1);
}

.detail-hint {
    font-size: 12px;
    color: var(--color-text-secondary);
    opacity: 0.8;
}

.result-card {
    background: linear-gradient(145deg, #e8f5e8, #d4e8d4);
    border-color: #4CAF50;
}

.site-link-btn {
    background: #4CAF50;
    color: white;
    border: 2px solid #388E3C;
    padding: var(--spacing-2) var(--spacing-3);
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 0px #388E3C;
    margin-top: var(--spacing-2);
}

.site-link-btn:hover {
    background: #45a049;
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px #388E3C;
}

.site-link-btn:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0px #388E3C;
}

/* * -------------------
 * 10. Modals
 * -------------------
 */

.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.project-modal.visible {
    opacity: 1;
    visibility: visible;
}

.modal-wrapper {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 800px;
    height: 90%;
    max-height: 600px;
    background-color: var(--color-bg-white);
    border: 3px solid var(--color-border);
    box-shadow: 8px 8px 0px var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.project-modal.visible .modal-wrapper {
    transform: translate(-50%, -50%) scale(1);
    transition: transform 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
    background-color: var(--color-bg-frame-header);
    border-bottom: 2px solid var(--color-border);
}

.modal-title {
    font-size: 18px;
    font-weight: bold;
    color: var(--color-text-title);
}

/* 모든 모달 닫기 버튼에 동일하게 적용 */
.close-modal-btn {
    position: absolute; /* 절대 위치를 사용하여 오른쪽 위에 고정 */
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 45px;
    height: 45px;
    background-color: var(--color-border);
    color: var(--color-bg-white);
    border: none;
    border-radius: 50%;
    font-size: 26px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 0px rgba(83, 83, 83, 0.5);
    z-index: 10;
}

.close-modal-btn:hover {
    background-color: var(--color-btn-close);
    transform: scale(1.1);
}

.modal-content {
    flex: 1;
    padding: var(--spacing-5);
    overflow-y: auto;
    color: var(--color-text-main);
    line-height: 1.6;
}

.modal-content h3 {
    color: var(--color-text-title);
    margin-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-1);
}

.modal-content p {
    margin-bottom: var(--spacing-3);
    color: var(--color-text-secondary);
}

.modal-content ul {
    margin-left: var(--spacing-4);
    margin-bottom: var(--spacing-3);
}

.modal-content li {
    margin-bottom: var(--spacing-1);
    color: var(--color-text-secondary);
}


/* 이미지 모달을 위한 모달 스타일 */
.modal {
    display: none;
    position: fixed;
    z-index: 2001; /* 👈 이 값을 2001로 수정 */
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.9);
}

.modal-content {
    margin: auto;
    display: block;
    width: 90%;
    max-width: 900px;
    animation: zoom 0.6s;
    
    
}
#modal-image {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    margin-top: 50px; /* 이 값으로 위치를 조절하세요. */
}
#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}

/* Updated `close-modal` to match `close-resume-btn` */
.close-modal {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 45px;
    height: 45px;
    background-color: var(--color-border);
    color: var(--color-bg-white);
    border: none;
    border-radius: 50%;
    font-size: 26px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 0px rgba(83, 83, 83, 0.5);
    z-index: 10;
}

.close-modal:hover {
    background-color: var(--color-btn-close); /* Apply red hover color */
    transform: scale(1.1);
}

.close-modal:focus {
    color: var(--color-bg-white);
    text-decoration: none;
    cursor: pointer;
}

/* * -------------------
 * 11. Gallery & Images
 * -------------------
 */

.section-content img {
    max-width: 300px;
    height: auto;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.db-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.db-image-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 10px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

.db-image-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.db-image-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 5px;
    cursor: zoom-in;
}

.image-caption {
    margin-top: 8px;
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.gacha-image-row {
    display: flex;
    gap: 15px;
    margin: 15px 0;
    justify-content: center;
    align-items: flex-end;
}

.gacha-image-row img {
    width: 200px;
    height: auto;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    
}

.gacha-image-row figure {
    text-align: center;
    margin: 0;
}

.gacha-image-row figcaption {
    margin-top: 5px;
    font-size: 14px;
    color: #333;
}

/* * -------------------
 * 12. Miscellaneous
 * -------------------
 */

.goal-item {
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
}

.goal-item img {
    margin-right: var(--spacing-1);
    margin-top: 2px;
}

.help-commands {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.help-item {
    background-color: var(--color-bg-project-item);
    padding: var(--spacing-3);
    border-radius: var(--spacing-1);
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.help-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.help-command {
    color: var(--color-text-title);
    font-weight: bold;
    font-size: 17px;
    margin-bottom: 5px;
}

.help-desc {
    color: var(--color-text-secondary);
    font-size: 15px;
}

.contact-links {
    margin-top: var(--spacing-3);
}

.contact-links a {
    color: var(--color-text-main);
    text-decoration: none;
    padding: 5px var(--spacing-2);
    margin-right: var(--spacing-2);
    border: 2px solid var(--color-border);
    border-radius: 0;
    display: inline-block;
    margin-bottom: 5px;
    transition: all 0.2s ease;
    background-color: var(--color-bg-white);
    font-weight: bold;
    box-shadow: var(--shadow-project-item);
}

.contact-links a:hover {
    background-color: var(--color-border);
    color: var(--color-bg-white);
    transform: translate(1px, 1px);
    box-shadow: none;
}

.link-explanation {
    font-size: 14px;
    color: #888;
    margin-left: 5px;
}

/* 줌 컨트롤 컨테이너 */
.resume-image-container .zoom-controls,
.modal .zoom-controls {
    position: fixed;
    right: 30px;
    bottom: 30px;
    top: auto; /* 기존 top 값을 제거하여 bottom과 충돌하지 않게 함 */
    transform: none; /* 기존 transform 값을 제거하여 위치 조정에 영향을 주지 않게 함 */
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}

/* 기존 버튼 스타일은 그대로 유지 */
.resume-image-container .zoom-controls button, 
.modal .zoom-controls button {
    width: 45px;
    height: 45px;
    font-size: 28px;
    color: #fff;
    background-color: rgba(83, 83, 83, 0.7);
    border: 2px solid #535353;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 호버 효과 */
.resume-image-container .zoom-controls button:hover, 
.modal .zoom-controls button:hover {
    background-color: rgba(0, 0, 0, 0.85);
    box-shadow: 3px 3px 8px rgba(0, 0, 0, 0.5);
    transform: scale(1.1);
}


.portfolio-footer {
    max-width: 1200px;
    margin: var(--spacing-6) auto 0;
    padding: var(--spacing-4);
    text-align: center;
    background-color: var(--color-bg-frame-header);
    border: 3px solid var(--color-border);
    box-shadow: var(--shadow-main);
}

.footer-content p {
    margin: 0;
    color: var(--color-text-main);
    font-family: var(--font-main);
    font-size: 16px;
    font-weight: bold;
}

/* 이미지 자세히 보기 블록 스타일 */
.image-detail-block {
    font-size: 11px;
    color: #888;
    text-align: center;
    margin-top: 3px;
    padding: 2px 6px;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-weight: normal;
    opacity: 0.7;
    transition: opacity 0.2s ease;
    display: inline-block;
    width: auto; /* 콘텐츠 크기에 맞게 자동 조정 */
    font-family: var(--font-mono);
    white-space: nowrap; /* 텍스트 줄바꿈 방지 */
}

.image-detail-block:hover {
    opacity: 1;
}

/* DB 갤러리 아이템에서 이미지 하단에 표시 */
.db-image-item .image-detail-block {
    margin-top: 5px;
    font-size: 10px;
    margin-left: auto;
    margin-right: auto;
    white-space: nowrap;
}

/* 가차 이미지 행에서 사용할 때 */
.gacha-image-row .image-detail-block {
    font-size: 10px;
    margin: 3px auto 0;
    white-space: nowrap;
}

/* 일반 섹션 콘텐츠 내 이미지용 */
.section-content .image-container {
    text-align: center;
    display: inline-block;
    margin: 10px 5px;
}

.section-content .image-container img {
    display: block;
    margin-bottom: 0;
}

.section-content .image-container .image-detail-block {
    margin-top: 3px;
    white-space: nowrap;
}


/* Scroll to Top Button - Enhanced to match portfolio theme */
#scrollToTopBtn {
    position: fixed;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    width: 55px;
    height: 55px;
    background: linear-gradient(145deg, #ffffff, #e6e6e6);
    color: var(--color-text-main);
    border: 2px solid var(--color-border);
    border-radius: 0; /* Square corners to match theme */
    cursor: pointer;
    font-family: var(--font-main);
    font-size: 18px;
    font-weight: bold;
    z-index: 1000;
    transition: all 0.2s ease;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-main);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#scrollToTopBtn:hover {
    background: linear-gradient(145deg, #f0f0f0, #d9d9d9);
    transform: translate(-1px, -1px);
    box-shadow: 5px 5px 0px var(--color-border);
}

#scrollToTopBtn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--color-border);
}

#scrollToTopBtn.visible {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

#scrollToTopBtn.hidden {
    display: none !important;
}

/* Alternative minimal version that matches your current style better */
#scrollToTopBtn.minimal {
    width: 50px;
    height: 50px;
    background-color: var(--color-border);
    color: var(--color-bg-white);
    border: none;
    border-radius: 50%;
    font-size: 18px;
    box-shadow: 3px 3px 0px rgba(83, 83, 83, 0.3);
}

#scrollToTopBtn.minimal:hover {
    background-color: var(--color-text-title);
    transform: translateY(-2px);
    box-shadow: 4px 4px 0px rgba(83, 83, 83, 0.3);
}
.project-video {
  margin: 24px auto;
  width: 100%;
  max-width: 960px; /* 원하는 최대 폭 */
  aspect-ratio: 16 / 9; /* 가로세로 비율 유지 */
}

.project-video iframe {
  width: 100%;
  height: 100%;
  border-radius: 12px;
}

/* * -------------------
 * 13. Responsive Design
 * -------------------
 */

@media (max-width: 768px) {
    /* General Layout */
    .profile-section, .bottom-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .profile-image {
        width: 150px;
        height: 200px;
    }
    
    .profile-name { font-size: 18px; }
    .project-title { font-size: 17px; }
    .project-desc { font-size: 14px; }

    /* Resume Modal */
    .resume-clickable {
        padding: 16px;
        min-height: 120px;
    }
    
    .resume-clickable .project-title { font-size: 15px; }
    .resume-clickable .project-desc { font-size: 12px; }
    
    .click-hint {
        font-size: 10px;
        padding: 3px 6px;
    }
    
    .resume-image-wrapper {
        width: 98%;
        height: 98%;
        padding: var(--spacing-3);
    }
    
    .nav-btn-resume {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
    
    .prev-btn { left: var(--spacing-2); }
    .next-btn { right: var(--spacing-2); }
    
    .close-resume-btn {
        width: 40px;
        height: 40px;
        font-size: 24px;
        top: var(--spacing-3);
        right: var(--spacing-3);
    }
    
    .thumbnail-nav {
        bottom: var(--spacing-2);
        gap: 5px;
        padding: var(--spacing-1);
    }
    
    .thumbnail-item {
        width: 45px;
        height: 60px;
    }
    
    .keyboard-hint {
        bottom: 90px;
        font-size: 12px;
    }
    
    .page-indicator {
        top: var(--spacing-3);
        right: var(--spacing-3);
        font-size: 14px;
        padding: 6px 12px;
    }

    /* Project Components */
    .overview-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2);
    }
    
    .project-overview {
        padding: var(--spacing-4);
    }
    
    .section-header {
        padding: var(--spacing-2) var(--spacing-3);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-1);
    }
    
    .section-title {
        font-size: 14px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2);
    }
    
    .result-item {
        padding: var(--spacing-3);
    }
    
    .timeline-btn {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: 13px;
    }

    .detail-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2);
    }
    
    .detail-card {
        min-height: 120px;
        padding: var(--spacing-3);
    }
    
    .detail-icon {
        font-size: 28px;
    }
    
    .detail-title {
        font-size: 14px;
    }
    
    .detail-hint {
        font-size: 11px;
    }
    
    .modal-wrapper {
        width: 95%;
        height: 95%;
    }
    
    .modal-content {
        padding: var(--spacing-4);
    }
    #scrollToTopBtn {
        width: 45px;
        height: 45px;
        bottom: var(--spacing-3);
        right: var(--spacing-3);
        font-size: 16px;
    }
}