/*
Theme Name: portfolio0902
Author: SHOGO MORITA
Description: もりたのポートフォリオ
Version: 1.0.0
Text Domain: my portfolio
*/

/* --- 基本設定 --- */
:root {
    --bg-dark-primary: #0d1117;
    --bg-dark-secondary: #161b22;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-cyan: #22d3ee;
    --accent-blue: #007bff;
    --border-color: #30363d;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-dark-primary);
    color: var(--text-primary);
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

.container {
    width: 90%;
    max-width: 1120px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

section {
    padding: 5rem 0;
}
@media (min-width: 768px) {
    section {
        padding: 7rem 0;
    }
}

/* --- ローディング画面 --- */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-dark-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}
.loader svg {
    width: 6rem;
    height: 6rem;
}

/* --- ヘッダー --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 50;
    transition: all 0.3s;
}
.header.scrolled {
    background-color: rgba(22, 27, 34, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}
.header-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.05em;
    text-decoration: none;
}
.header-nav {
    display: none; /* スマホでは非表示 */
}
@media (min-width: 768px) {
    .header-nav {
        display: flex;
        gap: 2.5rem;
    }
}
.header-nav a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
    letter-spacing: 0.1em;
}
.header-nav a:hover {
    color: var(--accent-cyan);
}
.hamburger-menu {
    display: block;
}
@media (min-width: 768px) {
    .hamburger-menu {
        display: none;
    }
}
.hamburger-menu svg {
    width: 1.5rem;
    height: 1.5rem;
    color: #fff;
}

/* --- メインビジュアル (Hero) --- */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.2);
    z-index: 10;
}
.hero-content {
    position: relative;
    z-index: 20;
    padding: 0 1.5rem;
}
.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    letter-spacing: 0.02em;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.5);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
}

.hero-title .main-title { display: block; }
.hero-title .subtitle {
    display: block;
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
    color: var(--accent-cyan);
}
@media (min-width: 768px) {
    .hero-title .subtitle { font-size: 1.5rem; }
}
.hero-description {
    margin-top: 3rem;
    color: #e0e0e0;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    letter-spacing: 0.1em;
}
@keyframes text-fade-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero-text-anim > * {
    opacity: 0;
    animation: text-fade-up 0.8s ease-out forwards;
}
.hero-text-anim .hero-title { animation-delay: 0.5s; }
.hero-text-anim .hero-description { animation-delay: 0.9s; }

/* --- About --- */
.about-container {
    max-width: 56rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}
@media (min-width: 768px) {
    .about-container {
        flex-direction: row;
        align-items: center;
        gap: 0;
    }
}
.about-image {
    width: 12rem;
    height: 12rem;
    border-radius: 9999px;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
    border: 4px solid var(--border-color);
    position: relative;
    z-index: 10;
}
@media (min-width: 768px) {
    .about-image {
        width: 15rem;
        height: 15rem;
        margin-right: -3rem; /* overlap */
    }
}
.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.about-text {
    text-align: center;
    background-color: var(--bg-dark-secondary);
    padding: 2rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}
@media (min-width: 768px) {
    .about-text {
        text-align: left;
        padding: 3rem;
        padding-left: 5rem; /* space for overlapping image */
    }
}

/* --- Section Borders --- */
#works,
#skill,
#contact {
    border-top: 1px solid var(--border-color);
}

/* --- Scroll Down Animation --- */
.scroll-down-animation {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 30;
    color: #fff;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.scroll-down-animation span {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}
.scroll-down-animation::after {
    content: '';
    width: 24px;
    height: 40px;
    border: 2px solid #fff;
    border-radius: 12px;
    position: relative;
}
.scroll-down-animation::before {
    content: '';
    position: absolute;
    top: 35px;
    left: 50%;
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
    0% {
        transform: translate(-50%, 0);
        opacity: 0;
    }
    30% {
        opacity: 1;
    }
    100% {
        transform: translate(-50%, 20px);
        opacity: 0;
    }
}

/* --- Contact Form 7 Styles --- */
.wpcf7-form .form-group {
    margin-bottom: 1.5rem;
}
.wpcf7-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 700;
}
.wpcf7-form .form-control {
    width: 100%;
    background-color: var(--bg-dark-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    transition: border-color 0.3s, box-shadow 0.3s;
}
.wpcf7-form .form-control:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}
.wpcf7-form textarea.form-control {
    min-height: 150px;
}
.wpcf7-form .submit-group {
    text-align: center;
    margin-top: 2.5rem;
    margin-left: 6vw;
}
.wpcf7-form .btn-primary {
    display: inline-block;
    background: linear-gradient(to right, var(--accent-cyan), var(--accent-blue));
    color: #fff;
    padding: 1rem 3rem;
    border-radius: 9999px;
    font-size: 1.125rem;
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}
.wpcf7-form .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(34, 211, 238, 0.4);
}
.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: #fff;
}
.section-subtitle {
    font-size: 0.875rem;
    color: var(--accent-cyan);
    margin-top: -1.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
}
.about-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* --- Works --- */
#works {
    padding: 5rem 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 123, 255, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(34, 211, 238, 0.08) 0%, transparent 50%),
        linear-gradient(-45deg, var(--bg-dark-secondary) 0%, #1c2128 30%, var(--bg-dark-secondary) 70%, #1a1f26 100%);
}
@media (min-width: 768px) {
    #works { padding: 7rem 0; }
}
.works-header {
    text-align: center;
    margin-bottom: 3rem;
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10vw;
    max-width: 1200px;
    margin: 50px auto;
}

@media screen and (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
        margin: 0 50px;
    }
}

.grid-list {
    text-decoration: none;
    color: inherit;
    display: block;
}

.grid-list:hover {
    transform: translateY(-5px);
}

.grid-container img {
    width: 100%;
    height: auto;
    display: block;
    box-shadow: 0px 0px 10px rgb(20, 19, 19);
}


.grid-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1rem 1.5rem 0.5rem;
}

.grid-text {
    font-size: 0.875rem;
    color: var(--accent-cyan);
    margin: 0 1.5rem 1.5rem;
    font-weight: 500;
}

.youtube-wrap:hover {
    transform: translateY(-5px);
}

.youtube-wrap iframe {
    width: 100%;
    height: 12rem;
}

.youtube-wrap .grid-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1rem 1.5rem 0.5rem;
}

.youtube-wrap .grid-text {
    font-size: 0.875rem;
    color: var(--accent-cyan);
    margin: 0 1.5rem 1.5rem;
    font-weight: 500;
}

.work-card {
    background-color: var(--bg-dark-primary);
    border-radius: 0.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.work-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border-color: var(--accent-cyan);
}
.work-card-image {
    overflow: hidden;
    height: 14rem;
}
@media (min-width: 768px) {
    .work-card-image { height: 16rem; }
}
.work-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.work-card:hover .work-card-image img {
    transform: scale(1.05);
}
.work-card-content {
    padding: 1.5rem;
}
.work-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}
.work-card-category {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* --- Skill --- */
#skill {
    padding: 5rem 0;
    background: 
        radial-gradient(circle at 70% 20%, rgba(0, 123, 255, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 30% 80%, rgba(34, 211, 238, 0.08) 0%, transparent 50%),
        linear-gradient(45deg, var(--bg-dark-secondary) 0%, #1c2128 30%, var(--bg-dark-secondary) 70%, #1a1f26 100%);
}

.skill-header {
    text-align: center;
    margin-bottom: 4rem;
}
.skill-grid {
    max-width: 48rem; /* 768px */
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
@media (min-width: 768px) {
    .skill-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 3rem;
    }
}
.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.skill-icon-wrapper {
    width: 6rem;
    height: 6rem;
    background-color: var(--bg-dark-primary);
    border-radius: 9999px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}
.skill-item:hover .skill-icon-wrapper {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
}
.skill-icon-wrapper svg {
    width: 3rem;
    height: 3rem;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.skill-item:hover .skill-icon-wrapper svg {
    color: var(--accent-cyan);
}

.skill-item h3 {
    font-weight: 700;
    margin-top: 1rem;
    color: var(--text-primary);
}

.skill-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* --- Contact --- */
#contact {
    padding: 5rem 0;
    background: 
        linear-gradient(45deg, transparent 40%, rgba(34, 211, 238, 0.05) 50%, transparent 60%),
        linear-gradient(-45deg, transparent 40%, rgba(0, 123, 255, 0.03) 50%, transparent 60%),
        radial-gradient(ellipse at center, #1a1f26 0%, var(--bg-dark-secondary) 50%, #161b22 100%);
}
.contact-container {
    text-align: center;
}
.contact-description {
    max-width: 36rem; /* 576px */
    margin: 0 auto 2.5rem auto;
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-button {
    display: inline-block;
    background: linear-gradient(to right, #22d3ee, #007bff);
    color: #fff;
    padding: 1rem 3rem;
    border-radius: 9999px;
    font-size: 1.125rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

.contact-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(34, 211, 238, 0.4);
}

.contact-container .wpcf7 {
    max-width: 700px;
    margin: 0 auto;
}
.contact-container .wpcf7-form {
    text-align: left;
}

/* --- フッター --- */
.footer {
    background-color: var(--bg-dark-primary);
    color: var(--text-secondary);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.875rem;
}

/* --- ユーティリティ --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* --- Skill Page --- */
.page-header {
    text-align: center;
    margin-bottom: 4rem;
}

.skill-category {
    margin-bottom: 4rem;
}

.skill-category-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent-cyan);
    padding-left: 1rem;
}
.skill-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.skill-item-detailed {
    background-color: var(--bg-dark-secondary);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.skill-item-detailed h3 {
    font-size: 1.125rem;
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-dark-primary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.skill-level {
    display: block;
    height: 100%;
    background: linear-gradient(to right, var(--accent-cyan), var(--accent-blue));
    border-radius: 4px;
}

.skill-item-detailed p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* --- Works Archive Page --- */
.works-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}
@media (min-width: 768px) {
    .works-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

/* --- Expanded Works Section for Front Page --- */
.works-grid-expanded {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    margin: 2rem 0;
}

@media (min-width: 768px) {
    .works-grid-expanded {
        grid-template-columns: repeat(2, 1fr);
        gap: 6rem;
    }
}

.work-card-expanded {
    display: block;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    text-decoration: none;
}

.work-card-expanded:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-cyan);
}

.work-card-expanded-image {
    position: relative;
    overflow: hidden;
    height: 300px;
}

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

.work-card-expanded:hover .work-card-expanded-image img {
    transform: scale(1.05);
}

.work-card-expanded-content {
    padding: 1.5rem;
}

.work-card-expanded-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.8rem 0;
    line-height: 1.4;
}

.work-card-expanded-category {
    margin: 0;
}

.work-card-expanded-category span {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    border: 1px solid rgba(34, 211, 238, 0.3);
}

.work-card-archive {
    display: block;
    text-decoration: none;
    background-color: var(--bg-dark-secondary);
    border-radius: 0.5rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.work-card-archive:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.work-card-archive-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.work-card-archive-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.work-card-archive:hover .work-card-archive-image img {
    transform: scale(1.05);
}

.work-card-archive-content {
    padding: 1.5rem;
}

.work-card-archive-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
}

.work-card-archive-category span {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--bg-dark-primary);
    background-color: var(--accent-cyan);
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    margin-right: 0.5rem;
}

/* --- Pagination --- */
.pagination {
    text-align: center;
    margin-top: 4rem;
}
.pagination .nav-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}
.pagination .page-numbers {
    display: block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 0.25rem;
    transition: background-color 0.3s, color 0.3s;
}
.pagination .page-numbers:hover,
.pagination .page-numbers.current {
    background-color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: var(--bg-dark-primary);
    font-weight: 700;
}

/* --- Single Work Page --- */
.work-single-header {
    text-align: center;
    padding: 3rem 0;
    background-color: var(--bg-dark-secondary);
}
.work-single-title {
    font-size: 2.5rem;
    margin: 0 0 0.5rem 0;
}
@media (min-width: 768px) {
    .work-single-title {
        font-size: 3.5rem;
    }
}
.work-single-categories span {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--bg-dark-primary);
    background-color: var(--accent-cyan);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    margin: 0 0.25rem;
}
.work-single-image {
    text-align: center;
    padding: 2rem 0;
}
.work-single-image img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
}
.work-single-content {
    padding: 3rem 0;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}
@media (min-width: 992px) {
    .work-single-content {
        flex-direction: row;
    }
}
.work-main-content {
    flex: 3;
}
.work-sidebar {
    flex: 1;
}
.content-heading {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}
.entry-content,
.entry-content p {
    line-height: 1.8;
    color: var(--text-secondary);
}
.work-meta {
    background-color: var(--bg-dark-secondary);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}
.work-meta-title {
    font-size: 1.25rem;
    margin: 0 0 1rem 0;
    color: var(--text-primary);
}
.work-meta ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.work-meta li {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}
.work-meta li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.work-meta strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}
.work-meta a {
    color: var(--accent-cyan);
    text-decoration: none;
}
.work-meta a:hover {
    text-decoration: underline;
}

.page-header {
    padding-top: 8rem;
    padding-bottom: 4rem;
    text-align: center;
    background-color: var(--bg-dark-secondary);
}

.topic-category-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.topic-category-filter a {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 9999px;
    transition: all 0.3s;
}

.topic-category-filter a:hover,
.topic-category-filter a.active {
    background-color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: var(--bg-dark-primary);
    font-weight: 700;
}

.work-card-archive-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.youtube-wrap .work-card-archive-image {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
}

.youtube-wrap iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* --- Topic Page Layout --- */
.topic-layout {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}
@media (min-width: 992px) {
    .topic-layout {
        flex-direction: row;
    }
    .topic-main {
        flex: 1;
    }
    .topic-sidebar {
        width: 300px;
        flex-shrink: 0;
    }
}

.sidebar-widget {
    background-color: var(--bg-dark-secondary);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.widget-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 1.5rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

/* Profile Widget */
.profile-widget {
    text-align: center;
}
.profile-widget-image {
    width: 8rem;
    height: 8rem;
    border-radius: 50%;
    margin: 0 auto 1rem auto;
    border: 4px solid var(--border-color);
}
.profile-widget-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}
.profile-widget-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0.5rem 0 1.5rem 0;
    line-height: 1.6;
}
.profile-widget-button {
    display: inline-block;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1.5rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.3s;
}
.profile-widget-button:hover {
    background-color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: var(--bg-dark-primary);
}

/* Recent Posts & Category Widget */
.recent-posts-widget, .category-widget {
    list-style: none;
    padding: 0;
    margin: 0;
}
.recent-posts-widget li, .category-widget li {
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}
.recent-posts-widget li:last-child, .category-widget li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.recent-posts-widget li:first-child, .category-widget li:first-child {
    padding-top: 0;
}
.recent-posts-widget a, .category-widget a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}
.recent-posts-widget a:hover, .category-widget a:hover {
    color: var(--accent-cyan);
}
.category-widget {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.category-widget li {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
}

/* --- About Page Overlap --- */
.about-container {
    align-items: center;
}
@media (min-width: 768px) {
    .about-container {
        gap: 0;
    }
    .about-image {
        margin-right: -3rem; /* overlap */
        z-index: 10;
    }
    .about-text {
        background: 
            linear-gradient(135deg, rgba(34, 211, 238, 0.08) 0%, transparent 30%), 
            linear-gradient(135deg, var(--bg-dark-secondary) 0%, #1c2128 100%);
        padding: 3rem;
        padding-left: 5rem; /* space for overlapping image */
        border-radius: 0.5rem;
        border: 2px solid transparent;
        background-clip: padding-box;
        box-shadow: 
            inset 0 1px 0 rgba(34, 211, 238, 0.2),
            0 8px 32px rgba(0, 0, 0, 0.3),
            0 0 0 1px var(--border-color);
        transition: all 0.3s ease;
    }
    
    .about-container:hover .about-text {
        box-shadow: 
            inset 0 1px 0 rgba(34, 211, 238, 0.4),
            0 12px 48px rgba(0, 0, 0, 0.4),
            0 0 0 1px rgba(34, 211, 238, 0.3);
    }
    
    .about-container:hover .about-image {
        border-color: var(--accent-blue);
        transform: scale(1.02);
    }
}

/* --- Enhanced About Section --- */
.about-container-enhanced {
    max-width: 72rem;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

@media (min-width: 768px) {
    .about-container-enhanced {
        grid-template-columns: 1fr 1.5fr;
        gap: 6rem;
    }
}

.about-image-enhanced {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper {
    position: relative;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--accent-cyan);
    box-shadow: 0 20px 60px rgba(34, 211, 238, 0.2);
    transition: all 0.3s ease;
}

.image-wrapper:hover {
    transform: scale(1.05);
    box-shadow: 0 25px 80px rgba(34, 211, 238, 0.3);
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-decorations {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.decoration-circle {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-cyan);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 3s ease-in-out infinite;
}

.decoration-dots {
    position: absolute;
    bottom: -10px;
    left: -10px;
    width: 40px;
    height: 40px;
    background: radial-gradient(circle, var(--accent-cyan) 2px, transparent 2px);
    background-size: 8px 8px;
    opacity: 0.4;
    animation: float 3s ease-in-out infinite reverse;
}

.about-text-enhanced {
    text-align: left;
}

.about-intro {
    margin-bottom: 2rem;
}

.about-label {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    border: 1px solid rgba(34, 211, 238, 0.3);
    margin-bottom: 1rem;
}

.section-title-enhanced {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
    line-height: 1.2;
}

.role-title {
    font-size: 1.2rem;
    color: var(--accent-cyan);
    font-weight: 500;
    margin: 0;
}

.about-description-enhanced {
    margin: 2rem 0;
}

.main-description {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
    font-weight: 500;
    line-height: 1.6;
}

.detail-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* --- Single Post Styles --- */
.single-post-main {
    padding-top: 80px;
    background: var(--bg-dark-primary);
}

.single-post-article {
    background: var(--bg-dark-primary);
}

.single-post-header {
    padding: 3rem 0 4rem;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.02) 0%, var(--bg-dark-primary) 50%);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-navigation {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.breadcrumb-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-link:hover {
    color: var(--accent-cyan);
}

.breadcrumb-separator {
    color: var(--text-secondary);
    opacity: 0.5;
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.post-meta-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.post-category {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    border: 1px solid rgba(34, 211, 238, 0.3);
}

.post-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.single-post-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin: 0;
}

@media (max-width: 768px) {
    .single-post-title {
        font-size: 1.8rem;
    }
}

.single-post-featured-image {
    padding: 2rem 0 4rem;
}

.featured-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.single-post-content {
    padding: 2rem 0 4rem;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.entry-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.entry-content p {
    margin-bottom: 1.5rem;
}

.entry-content h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 2rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-cyan);
}

.entry-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1.5rem 0 1rem 0;
}

.entry-content img {
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.post-navigation {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.nav-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .nav-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.nav-link {
    display: block;
    padding: 1.5rem;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-link:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.nav-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.nav-title {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.nav-next .nav-link {
    text-align: right;
}

/* --- Archive Page Styles --- */
.archive-main {
    padding-top: 80px;
    background: var(--bg-dark-primary);
}

.archive-header {
    padding: 3rem 0 4rem;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.02) 0%, var(--bg-dark-primary) 50%);
    border-bottom: 1px solid var(--border-color);
}

.archive-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1.5rem 0 1rem 0;
    line-height: 1.2;
}

.archive-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.archive-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.post-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: var(--bg-dark-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.archive-content {
    padding: 4rem 0;
}

.archive-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .archive-posts-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.archive-post-card {
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.archive-post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-cyan);
}

.post-card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

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

.archive-post-card:hover .card-thumbnail {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.3) 0%, transparent 50%);
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 1rem;
}

.post-card-category {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    background: rgba(34, 211, 238, 0.9);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
}

.post-card-content {
    padding: 1.5rem;
}

.post-card-meta {
    margin-bottom: 1rem;
}

.post-card-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.post-card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    line-height: 1.4;
}

.post-card-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.post-card-title a:hover {
    color: var(--accent-cyan);
}

.post-card-excerpt {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.read-more-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-decoration: none;
    transition: all 0.2s ease;
}

.read-more-link:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

.archive-pagination {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
}

.archive-pagination .nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.archive-pagination a,
.archive-pagination .current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0.5rem 1rem;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

.archive-pagination a:hover {
    background: var(--accent-cyan);
    color: var(--bg-dark-primary);
    border-color: var(--accent-cyan);
}

.archive-pagination .current {
    background: var(--accent-cyan);
    color: var(--bg-dark-primary);
    border-color: var(--accent-cyan);
}

.pagination-label {
    font-size: 0.9rem;
}

.no-posts-message {
    text-align: center;
    padding: 4rem 2rem;
}

.no-posts-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.no-posts-message h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
}

.no-posts-message p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0 0 2rem 0;
}

.back-home-btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: var(--accent-cyan);
    color: var(--bg-dark-primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-home-btn:hover {
    background: var(--text-primary);
    transform: translateY(-2px);
}

/* --- Category Page Styles --- */
.category-main {
    padding-top: 80px;
    background: var(--bg-dark-primary);
}

.category-header {
    padding: 3rem 0 2rem;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.02) 0%, var(--bg-dark-primary) 50%);
    border-bottom: 1px solid var(--border-color);
}

.category-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1.5rem 0 1rem 0;
    line-height: 1.2;
}

.category-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.category-filters {
    padding: 2rem 0;
    background: var(--bg-dark-secondary);
    border-bottom: 1px solid var(--border-color);
}

.filters-wrapper {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
}

.category-filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.filter-btn {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-dark-primary);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn-active {
    background: var(--accent-cyan);
    color: var(--bg-dark-primary);
    border-color: var(--accent-cyan);
}

.category-content {
    padding: 4rem 0;
}

.category-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .category-posts-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.category-post-card {
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.category-post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-cyan);
}

.category-pagination {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
}

.category-pagination .nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.category-pagination a,
.category-pagination .current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0.5rem 1rem;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

.category-pagination a:hover {
    background: var(--accent-cyan);
    color: var(--bg-dark-primary);
    border-color: var(--accent-cyan);
}

.category-pagination .current {
    background: var(--accent-cyan);
    color: var(--bg-dark-primary);
    border-color: var(--accent-cyan);
}

/* --- About Page Sections --- */
.about-profile-section {
    padding: 4rem 0;
    background: var(--bg-dark-primary);
}

.about-skills-section {
    padding: 5rem 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(34, 211, 238, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(0, 123, 255, 0.06) 0%, transparent 50%),
        var(--bg-dark-secondary);
}

.about-experience-section {
    padding: 5rem 0;
    background: var(--bg-dark-primary);
}

.about-philosophy-section {
    padding: 5rem 0;
    background: 
        linear-gradient(135deg, rgba(34, 211, 238, 0.05) 0%, transparent 50%),
        var(--bg-dark-secondary);
}

.profile-name {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.profile-name-en {
    font-size: 1rem;
    font-weight: 400;
    color: var(--accent-cyan);
    display: block;
    margin-top: 0.25rem;
}

.profile-role {
    font-size: 1.125rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.profile-description p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.skills-categories {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

@media (min-width: 768px) {
    .skills-categories {
        grid-template-columns: repeat(2, 1fr);
        gap: 4rem;
    }
}

.skill-category {
    background: 
        linear-gradient(135deg, rgba(34, 211, 238, 0.05) 0%, transparent 50%),
        var(--bg-dark-primary);
    border-radius: 1rem;
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-cyan);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.skill-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(45deg, var(--accent-cyan), var(--accent-blue));
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.skill-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--bg-dark-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.timeline {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.timeline-item {
    background: var(--bg-dark-secondary);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.timeline-item:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 8px 25px rgba(34, 211, 238, 0.15);
    transform: translateY(-2px);
}

@media (min-width: 768px) {
    .timeline {
        max-width: 800px;
        margin: 0 auto;
    }
}


.timeline-content {
    background: var(--bg-dark-secondary);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-cyan);
}

.timeline-year {
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.timeline-achievements {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.achievement-tag {
    background: linear-gradient(45deg, var(--accent-cyan), var(--accent-blue));
    color: var(--bg-dark-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.philosophy-card {
    background: 
        linear-gradient(135deg, rgba(34, 211, 238, 0.1) 0%, transparent 50%),
        var(--bg-dark-primary);
    border-radius: 1.5rem;
    padding: 3rem;
    text-align: center;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.philosophy-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--accent-cyan), transparent);
    opacity: 0.1;
    animation: rotate-bg 20s linear infinite;
    pointer-events: none;
}

@keyframes rotate-bg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.philosophy-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(45deg, var(--accent-cyan), var(--accent-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    position: relative;
    z-index: 1;
}

.philosophy-icon svg {
    width: 2rem;
    height: 2rem;
    color: var(--bg-dark-primary);
}

.philosophy-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.philosophy-card blockquote {
    position: relative;
    z-index: 1;
}

.philosophy-card blockquote p:first-child {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.philosophy-card blockquote p:last-child {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

/* --- Section Borders --- */
#works,
#skill,
#contact {
    border-top: 1px solid var(--border-color);
}

/* --- Custom Styles --- */
.hero-title .main-title {
    letter-spacing: 0.08em;
    font-size: 3.8rem;
    margin-bottom: 1.5rem;
}

section.full-height {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 5rem 0;
}

#works.full-height {
    justify-content: flex-start;
}

.skill-icon-wrapper {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
}