/* ============================================================
   subpage.css — Unified stylesheet for all sub-pages
   Replaces main.css (HTML5 UP "Directive" template).
   Shares the homepage's CSS custom property theme system.
   ============================================================ */

@import url("./root.css");

/* ---------- Fonts (same as homepage style.css) ---------- */
@font-face {
    font-family: "body-font";
    src: url(../fonts/Ubuntu-Regular.ttf);
    font-display: swap;
}

@font-face {
    font-family: "title-font";
    src: url(../fonts/Pacifico-Regular.ttf);
    font-display: swap;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "body-font", "Microsoft YaHei", "PingFang SC", sans-serif;
    background: var(--main_bg_color);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    color: #333;
    line-height: 1.8;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: #333;
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: #333;
    text-decoration: underline;
}

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

/* ---------- Loading screen (migrated from style.css) ---------- */
#zyyo-loading {
    background: radial-gradient(white, #d8eaff);
    background-size: 100%;
    background-position: center;
    height: 100%;
    width: 100%;
    position: fixed;
    z-index: 999999;
    top: 0;
    left: 0;
    pointer-events: none;
    opacity: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.3s ease;
}

#zyyo-loading-center {
    height: 150px;
    width: 150px;
    position: relative;
    border-radius: 50%;
    background: #472eff;
    animation: loading-zoom 1s linear infinite;
}

@keyframes loading-zoom {
    0%   { transform: scale(0); opacity: 1; }
    50%  { opacity: 0.5; }
    100% { transform: scale(1); opacity: 0; }
}

/* ---------- Background blur overlay (matches homepage) ---------- */
.zyyo-filter {
    position: fixed;
    width: 100%;
    height: 100%;
    background: var(--back_filter_color);
    backdrop-filter: blur(var(--back_filter));
    -webkit-backdrop-filter: blur(var(--back_filter));
    z-index: -1;
    top: 0;
    left: 0;
}

/* ---------- Top navigation bar ---------- */
.subpage-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 850px;
    margin: 20px auto 0 auto;
    padding: 12px 25px;
    background: var(--item_bg_color);
    backdrop-filter: blur(var(--card_filter));
    -webkit-backdrop-filter: blur(var(--card_filter));
    border-radius: 15px;
}

.subpage-nav-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.subpage-nav-logo {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    flex-shrink: 0;
    border: 2px solid rgba(255,255,255,0.6);
}

.subpage-nav-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--item_left_title_color);
}

.subpage-nav-right a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--item_hover_color);
    color: var(--item_left_title_color);
    font-size: 14px;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease;
}
.subpage-nav-right a:hover {
    transform: translateY(-1px);
    background: var(--item_bg_color);
    text-decoration: none;
}

/* ---------- Site brand (top gradient title, links to home) ---------- */
.site-brand {
    text-align: center;
    padding: 60px 0 0 0;
}
.site-brand a {
    font-family: "title-font";
    font-size: 60px;
    font-weight: 800;
    background: linear-gradient(120deg, #bd34fe, #4ade80 30%, #41d1ff 60%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200%;
    background-position: 0%;
    animation: gradientShift 10s ease-in-out infinite;
    text-decoration: none;
    display: inline-block;
}
.site-brand a:hover {
    text-decoration: underline;
}

/* ---------- Page header ---------- */
.subpage-hero {
    max-width: 850px;
    margin: 25px auto 0 auto;
    padding: 0 25px;
}

.subpage-hero h1 {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(120deg, #bd34fe, #4ade80 30%, #41d1ff 60%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200%;
    background-position: 0%;
    font-family: "title-font";
    animation: gradientShift 10s ease-in-out infinite;
    line-height: 1.3;
}

@keyframes gradientShift {
    0%   { background-position: 100%; }
    25%  { background-position: 50%; }
    50%  { background-position: 0%; }
    75%  { background-position: 50%; }
    100% { background-position: 100%; }
}

.subpage-hero .page-time {
    font-size: 14px;
    color: #ffffff;
    margin-top: 8px;
}

.subpage-hero .subtitle {
    font-size: 16px;
    color: var(--item_left_text_color);
    margin-top: 6px;
}

/* ---------- Content card ---------- */
.content-card {
    max-width: 850px;
    margin: 25px auto;
    padding: 40px 60px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

/* ---------- Section titles ---------- */
.section-title {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    text-align: left;
    margin: 35px 0 15px 0;
    padding-left: 15px;
    border-left: 4px solid #181f1c;
    line-height: 1.4;
}
.section-title:first-child {
    margin-top: 0;
}

/* ---------- Paragraphs ---------- */
.content-card p {
    text-align: justify;
    text-indent: 2em;
    line-height: 1.9;
    margin-bottom: 12px;
    font-size: 18px;
    color: #333;
}

/* ---------- Inline accent text ---------- */
.accent-text {
    color: var(--purple_text_color);
    font-weight: 700;
}
.accent-bg {
    background: var(--text_bg_color);
    border-radius: 5px;
    padding: 2px 6px;
    font-size: 0.95em;
}

/* ---------- Tables ---------- */
.table-wrapper {
    overflow-x: auto;
    margin: 20px 0;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.content-card table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
}

.content-card thead th {
    background: var(--text_bg_color);
    color: #333;
    font-weight: 700;
    padding: 12px 14px;
    text-align: center;
    border-bottom: 2px solid rgba(0,0,0,0.08);
}

.content-card tbody td,
.content-card tbody th {
    padding: 10px 14px;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    color: #333;
}

.content-card tbody tr:nth-child(even) {
    background: rgba(0,0,0,0.02);
}

.content-card tbody tr:hover {
    background: var(--item_hover_color);
}

/* ---------- Images ---------- */
.image-card {
    display: block;
    width: auto;
    max-width: 90%;
    max-height: 500px;
    margin: 20px auto;
    border-radius: 15px;
    box-shadow: 5px 5px 20px rgba(0, 0, 0, 0.12);
    border: 4px solid rgba(255,255,255,0.8);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    object-fit: contain;
}
.image-card:hover {
    transform: translateY(-2px);
    box-shadow: 5px 8px 28px rgba(0, 0, 0, 0.18);
}

figure {
    margin: 25px 0;
    text-align: center;
}
figure img {
    margin: 0 auto;
}
figcaption {
    margin-top: 8px;
    font-size: 14px;
    color: #888;
    text-align: center;
    text-indent: 0;
}

/* ---------- Code blocks ---------- */
.code-block {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 16px 20px;
    border-radius: 10px;
    overflow-x: auto;
    font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
    font-size: 14px;
    line-height: 1.6;
    margin: 15px 0;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ---------- Top link ---------- */
.content-card .top-link {
    text-align: center;
    text-indent: 0;
    font-size: 14px;
}

/* ---------- Back button ---------- */
.back-button-row {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid #ffffff;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
    background: #525455;
}
.back-button:hover {
    background: #232324;
    text-decoration: none;
    color: #fff;
}

/* ---------- Resource list (for zytj.html) ---------- */
.resource-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.resource-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: background 0.2s ease;
    text-indent: 0;
}
.resource-item:last-child {
    border-bottom: none;
}
.resource-item:hover {
    background: rgba(0,0,0,0.015);
}

.resource-item-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.resource-item-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.resource-item-info {
    flex: 1;
}
.resource-item-info .name {
    font-size: 16px;
    color: #333;
    margin-bottom: 4px;
    text-indent: 0;
}
.resource-item-info .name a {
    color: #333;
    text-decoration: none;
}
.resource-item-info .name a:hover {
    color: #333;
    text-decoration: underline;
}
.resource-item-info .desc {
    font-size: 14px;
    color: var(--item_left_text_color);
    margin: 0;
    text-indent: 0;
}

/* ---------- Link card list (for Experience card.html nav) ---------- */
.link-card-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 10px 0;
}

.link-card {
    display: flex;
    align-items: center;
    padding: 14px 18px;
    background: #fff;
    border-radius: 10px;
    text-decoration: none;
    color: #333;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(0,0,0,0.08);
}
.link-card:hover {
    transform: translateX(4px);
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    text-decoration: none;
    color: #090909;
}
.link-card .num {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #f5f5f5;
    border: 1px solid rgba(0,0,0,0.08);
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 14px;
    margin-right: 14px;
    flex-shrink: 0;
}
.link-card .label {
    flex: 1;
    font-size: 16px;
    font-weight: 500;
}
.link-card .arrow {
    color: #aaa;
    font-size: 18px;
}

/* ---------- Tag chips ---------- */
.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0;
}
.tag-chip {
    display: inline-block;
    padding: 5px 14px;
    background: var(--left_tag_item);
    border-radius: 20px;
    font-size: 13px;
    color: #333;
}

/* ---------- Education logos (About me.html) ---------- */
.edu-row {
    display: flex;
    align-items: center;
    margin: 15px 0;
    gap: 15px;
}
.edu-row span {
    font-size: 19px;
    text-indent: 0;
    flex: 1;
}
.edu-logo {
    width: 100px;
    height: auto;
    border-radius: 8px;
    flex-shrink: 0;
    background: #fff;
    padding: 8px;
}

/* ---------- Stats row (Experience card.html) ---------- */
.stats-list p {
    text-indent: 0;
    margin-bottom: 6px;
}
.stats-list strong {
    color: var(--purple_text_color);
}

/* ---------- Game image grid (game.html) ---------- */
.game-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin: 15px 0;
}
.game-item h3 {
    font-size: 20px;
    color: var(--item_left_title_color);
    margin-bottom: 10px;
    text-align: left;
    font-weight: 600;
}

/* ---------- Page footer ---------- */
.subpage-footer {
    text-align: center;
    padding: 20px;
    color: var(--footer_text_color);
    font-size: 13px;
    max-width: 850px;
    margin: 0 auto 30px auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .subpage-nav,
    .subpage-hero,
    .content-card {
        margin-left: 15px;
        margin-right: 15px;
        border-radius: 12px;
    }

    .subpage-nav {
        padding: 10px 18px;
    }

    .content-card {
        padding: 25px 20px;
    }

    .site-brand a {
        font-size: 40px;
    }

    .subpage-hero {
        padding: 0 20px;
    }

    .subpage-hero h1 {
        font-size: 32px;
    }

    .subpage-hero .page-time {
        font-size: 13px;
    }

    .section-title {
        font-size: 20px;
    }

    .image-card {
        width: 100%;
    }

    .edu-row {
        gap: 10px;
    }
    .edu-row span {
        font-size: 15px;
    }
    .edu-logo {
        width: 60px;
        padding: 4px;
    }

    .resource-item-icon {
        width: 48px;
        height: 48px;
    }
    .resource-item-info .name {
        font-size: 14px;
    }
}

@media (max-width: 500px) {
    .site-brand a {
        font-size: 32px;
    }

    .subpage-hero h1 {
        font-size: 26px;
    }

    .subpage-hero .page-time {
        font-size: 12px;
    }

    .content-card {
        padding: 20px 15px;
    }

    .content-card p {
        font-size: 15px;
        text-indent: 1.5em;
    }

    .section-title {
        font-size: 18px;
        padding-left: 10px;
    }

    .subpage-nav-title {
        font-size: 15px;
    }

    .edu-row span {
        font-size: 13px;
    }
    .edu-logo {
        width: 50px;
        padding: 3px;
    }

    .subpage-nav-logo {
        width: 34px;
        height: 34px;
    }

    .back-button {
        padding: 10px 22px;
        font-size: 14px;
    }

    .resource-item-icon {
        width: 40px;
        height: 40px;
    }
    .resource-item-info .name {
        font-size: 13px;
    }

    .code-block {
        font-size: 12px;
        padding: 12px 14px;
    }
}