/*
 * Animal Island UI visual system adapted for the existing Flask site.
 * Style reference: animal-island-ui, MIT License.
 * No React, npm package, or external SDK required.
 */

:root {
    --animal-primary-color: #19c8b9;
    --animal-primary-color-hover: #3dd4c6;
    --animal-primary-color-active: #11a89b;
    --animal-primary-color-bg: #e6f9f6;

    --animal-success-color: #6fba2c;
    --animal-success-color-active: #5a9e1e;
    --animal-warning-color: #f5c31c;
    --animal-warning-color-active: #dba90e;
    --animal-error-color: #e05a5a;
    --animal-error-color-active: #c94444;

    --animal-text-color: #794f27;
    --animal-text-color-body: #725d42;
    --animal-text-color-secondary: #9f927d;
    --animal-text-color-muted: #8a7b66;
    --animal-text-color-disabled: #c4b89e;

    --animal-border-color: #c4b89e;
    --animal-border-color-hover: #a89878;
    --animal-border-color-light: #e8dcc8;

    --animal-bg-color: #f8f8f0;
    --animal-bg-color-content: rgb(247, 243, 223);
    --animal-bg-color-secondary: #f0e8d8;
    --animal-bg-color-input: #fffbe7;
    --animal-bg-color-disabled: #f0ece2;

    --animal-shadow-sm: 0 2px 4px 0 rgba(61, 52, 40, 0.06);
    --animal-shadow-base: 0 3px 10px 0 rgba(61, 52, 40, 0.1);
    --animal-shadow-lg: 0 8px 24px 0 rgba(61, 52, 40, 0.14);
    --animal-shadow-btn: #bdaea0;
    --animal-shadow-input: #d4c9b4;

    --animal-radius-sm: 12px;
    --animal-radius: 18px;
    --animal-radius-lg: 24px;
    --animal-radius-pill: 50px;

    --animal-font-family: Nunito, "Noto Sans SC", ui-rounded, "SF Pro Rounded",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --animal-motion-fast: 0.15s;
    --animal-motion-base: 0.25s;
    --animal-motion-slow: 0.35s;
    --animal-motion-ease: cubic-bezier(0.4, 0, 0.2, 1);

    /* Compatibility aliases for the existing stylesheet. */
    --pink: var(--animal-primary-color);
    --blue: var(--animal-primary-color-active);
    --card-bg: var(--animal-bg-color-content);
    --text: var(--animal-text-color);
    --muted: var(--animal-text-color-muted);
    --radius: 20px;
    --shadow: var(--animal-shadow-base);
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--animal-text-color-body);
    font-family: var(--animal-font-family);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.65;
    letter-spacing: 0.01em;
    background-color: var(--animal-bg-color);
    background-image:
        radial-gradient(circle, rgba(159, 146, 125, 0.1) 1.5px, transparent 1.6px),
        radial-gradient(circle, rgba(25, 200, 185, 0.08) 1px, transparent 1.1px),
        linear-gradient(135deg, rgba(248, 166, 178, 0.08), rgba(130, 213, 187, 0.1));
    background-position:
        0 0,
        7px 7px,
        0 0;
    background-size:
        28px 28px,
        14px 14px,
        auto;
    background-attachment: scroll;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4 {
    color: var(--animal-text-color);
    font-weight: 800;
    letter-spacing: 0.02em;
}

a {
    color: var(--animal-primary-color-active);
    transition:
        color var(--animal-motion-fast) var(--animal-motion-ease),
        background-color var(--animal-motion-fast) var(--animal-motion-ease),
        border-color var(--animal-motion-fast) var(--animal-motion-ease),
        box-shadow var(--animal-motion-fast) var(--animal-motion-ease),
        transform var(--animal-motion-fast) var(--animal-motion-ease);
}

::selection {
    color: var(--animal-text-color);
    background: rgba(25, 200, 185, 0.25);
}

.container {
    max-width: 1120px;
}

/* Header and navigation */
.site-header {
    background: rgba(255, 252, 244, 0.92);
    border-bottom: 2px solid var(--animal-border-color-light);
    box-shadow: 0 3px 10px rgba(61, 52, 40, 0.08);
    backdrop-filter: blur(12px);
}

.nav {
    padding-top: 12px;
    padding-bottom: 12px;
}

.brand {
    color: var(--animal-text-color);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.brand:hover {
    color: var(--animal-primary-color-active);
}

.nav nav {
    gap: 8px;
}

.nav nav a {
    padding: 8px 14px;
    color: var(--animal-text-color-muted);
    font-size: 14px;
    font-weight: 700;
    border: 2px solid transparent;
    border-radius: var(--animal-radius-pill);
}

.nav nav a:hover {
    color: var(--animal-primary-color-active);
    background: var(--animal-primary-color-bg);
    border-color: rgba(25, 200, 185, 0.22);
}

.nav nav a.active {
    color: #fff9e3;
    background: var(--animal-primary-color);
    border-color: var(--animal-primary-color-active);
    box-shadow: 0 3px 0 0 var(--animal-shadow-input);
}

.nav nav a.active::after {
    display: none;
}

main.container {
    padding-top: 28px;
    padding-bottom: 56px;
}

/* Page sections */
.page-head {
    padding: 24px 0 12px;
}

.page-head h1 {
    margin-bottom: 8px;
    font-size: 30px;
}

.page-head p {
    color: var(--animal-text-color-muted);
}

.page-head a,
.more {
    color: var(--animal-primary-color-active);
    font-weight: 700;
    text-decoration: none;
}

.page-head a:hover,
.more:hover {
    color: var(--animal-text-color);
}

.more {
    padding: 5px 10px;
    border-radius: var(--animal-radius-pill);
}

.more:hover {
    background: var(--animal-primary-color-bg);
}

.section {
    margin-top: 32px;
}

.section-head {
    align-items: center;
    margin-bottom: 12px;
}

.section > h2,
.section-head h2 {
    color: var(--animal-text-color);
    font-size: 22px;
    font-weight: 800;
}

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding: 52px 28px 36px;
    text-align: center;
    color: var(--animal-text-color-body);
    background:
        radial-gradient(circle, rgba(159, 146, 125, 0.12) 1.5px, transparent 1.6px) 0 0 / 28px 28px,
        radial-gradient(circle, rgba(25, 200, 185, 0.08) 1px, transparent 1.1px) 7px 7px / 14px 14px,
        var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: var(--animal-radius-lg);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.hero::before,
.hero::after {
    position: absolute;
    content: "";
    border-radius: 50%;
    pointer-events: none;
}

.hero::before {
    top: -44px;
    right: -26px;
    width: 126px;
    height: 126px;
    background: rgba(130, 213, 187, 0.28);
}

.hero::after {
    bottom: -54px;
    left: -34px;
    width: 118px;
    height: 118px;
    background: rgba(248, 166, 178, 0.22);
}

.hero h1 {
    position: relative;
    z-index: 1;
    margin: 0;
    color: var(--animal-text-color);
    font-size: 34px;
    font-weight: 900;
    line-height: 1.35;
    background: none;
    text-shadow: 0 2px 0 rgba(255, 255, 255, 0.7);
    -webkit-text-fill-color: currentColor;
}

.hero-sub {
    position: relative;
    z-index: 1;
    margin: 10px 0 0;
    color: var(--animal-text-color-body);
    font-weight: 600;
}

.hero-stats {
    position: relative;
    z-index: 1;
    gap: 14px;
    margin-top: 28px;
}

.stat {
    padding: 18px 12px;
    background: var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: var(--animal-radius);
    box-shadow: none;
}

.stat:nth-child(1) {
    background: var(--animal-primary-color-bg);
    border-color: #82d5bb;
}

.stat:nth-child(2) {
    background: #e8edff;
    border-color: #889df0;
}

.stat:nth-child(3) {
    background: #fde4e8;
    border-color: #f8a6b2;
}

.stat strong {
    color: var(--animal-primary-color-active);
    font-size: 24px;
    font-weight: 900;
}

.stat:nth-child(2) strong {
    color: #5c6db5;
}

.stat:nth-child(3) strong {
    color: #a85565;
}

.stat span {
    color: var(--animal-text-color-body);
    font-weight: 600;
}

/* Cards and navigation tiles */
.card {
    padding: 20px 24px;
    color: var(--animal-text-color-body);
    background: var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: 20px;
    box-shadow: none;
}

.entry-grid {
    gap: 16px;
    margin-top: 28px;
}

.entry-card {
    padding: 22px 24px;
    color: var(--animal-text-color-body);
    background: var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: 20px;
    box-shadow: none;
    transition:
        transform var(--animal-motion-base) var(--animal-motion-ease),
        border-color var(--animal-motion-base) var(--animal-motion-ease),
        background-color var(--animal-motion-base) var(--animal-motion-ease);
}

.entry-card:nth-child(3n + 1) {
    background: #e6f9f6;
    border-color: #82d5bb;
}

.entry-card:nth-child(3n + 2) {
    background: #fde4e8;
    border-color: #f8a6b2;
}

.entry-card:nth-child(3n) {
    background: #e8edff;
    border-color: #889df0;
}

.entry-card:hover {
    transform: translateY(-2px);
    border-color: var(--animal-primary-color);
}

.entry-card h3 {
    margin-bottom: 7px;
    color: var(--animal-text-color);
    font-weight: 800;
}

.entry-card p {
    color: var(--animal-text-color-body);
    font-size: 14px;
}

.entry-card span {
    color: var(--animal-primary-color-active);
    font-weight: 700;
}

/* Album cards */
.album-cards {
    gap: 18px;
    margin-top: 14px;
}

.album-card {
    color: var(--animal-text-color-body);
    background: var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: 20px;
    box-shadow: none;
    transition:
        transform var(--animal-motion-base) var(--animal-motion-ease),
        border-color var(--animal-motion-base) var(--animal-motion-ease);
}

.album-card:hover {
    transform: translateY(-2px);
    border-color: var(--animal-primary-color);
}

.album-cover {
    background: var(--animal-bg-color-secondary);
    border-bottom: 2px solid var(--animal-border-color-light);
}

.album-cover img,
.album-cover video {
    transition: transform var(--animal-motion-slow) var(--animal-motion-ease);
}

.album-count {
    right: 10px;
    bottom: 10px;
    padding: 4px 10px;
    color: #fff9e3;
    font-size: 12px;
    font-weight: 700;
    background: var(--animal-primary-color-active);
    border: 2px solid rgba(255, 255, 255, 0.55);
    border-radius: var(--animal-radius-pill);
}

.album-info h3 {
    color: var(--animal-text-color);
    font-weight: 800;
}

.album-info p {
    color: var(--animal-text-color-muted);
}

/* Media grid and lightbox */
.album-grid {
    gap: 12px;
    margin-top: 18px;
}

.album-grid .media-item {
    background: var(--animal-text-color);
    border: 2px solid var(--animal-border-color);
    border-radius: 18px;
}

.album-grid .media-item img,
.album-grid .media-item video {
    transition: transform var(--animal-motion-base) var(--animal-motion-ease);
}

.play-badge {
    width: 48px;
    height: 48px;
    font-size: 0;
    background: rgba(61, 52, 40, 0.72);
    border: 2px solid rgba(255, 249, 227, 0.85);
}

.play-badge::before {
    margin-left: 3px;
    content: "";
    border-style: solid;
    border-width: 9px 0 9px 14px;
    border-color: transparent transparent transparent #fff9e3;
}

.lightbox img,
.lightbox video {
    border: 2px solid var(--animal-border-color);
    border-radius: 18px;
}

/* Quick links and link lists */
.quicklinks {
    gap: 16px;
    margin-top: 14px;
}

.quicklink {
    color: var(--animal-text-color-body);
    background: var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: 18px;
    box-shadow: none;
    transition:
        transform var(--animal-motion-base) var(--animal-motion-ease),
        border-color var(--animal-motion-base) var(--animal-motion-ease);
}

.quicklink:hover {
    transform: translateY(-2px);
    border-color: var(--animal-primary-color);
}

.quicklink strong {
    color: var(--animal-text-color);
    font-weight: 800;
}

.quicklink span {
    color: var(--animal-text-color-muted);
}

.link-list li {
    padding: 10px 0;
    border-bottom: 2px dashed var(--animal-border-color-light);
}

.link-list a {
    color: var(--animal-primary-color-active);
    font-weight: 700;
}

.link-list a:hover {
    color: var(--animal-text-color);
}

.muted {
    color: var(--animal-text-color-muted);
}

/* Chat */
.chat-container {
    background: var(--animal-bg-color-content);
    border: 2px solid var(--animal-border-color);
    border-radius: 20px;
}

.chat-head {
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.42);
    border-bottom: 2px solid var(--animal-border-color-light);
}

.chat-head h2 {
    color: var(--animal-text-color);
    font-weight: 800;
}

.chat-body {
    background:
        radial-gradient(circle, rgba(159, 146, 125, 0.08) 1.5px, transparent 1.6px) 0 0 / 28px 28px,
        radial-gradient(circle, rgba(25, 200, 185, 0.06) 1px, transparent 1.1px) 7px 7px / 14px 14px;
}

.bubble {
    padding: 9px 14px;
    color: var(--animal-text-color-body);
    font-weight: 500;
    background: var(--animal-bg-color-secondary);
    border: 2px solid var(--animal-border-color-light);
    border-radius: 18px 18px 18px 6px;
    box-shadow: none;
}

.msg.me .bubble {
    color: #fff9e3;
    background: var(--animal-primary-color);
    border-color: var(--animal-primary-color-active);
    border-radius: 18px 18px 6px 18px;
}

.meta {
    color: var(--animal-text-color-secondary);
}

.msg.me .meta {
    color: rgba(255, 249, 227, 0.86);
}

.chat-input {
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.36);
    border-top: 2px solid var(--animal-border-color-light);
}

.chat-input textarea {
    min-height: 48px;
    padding: 10px 16px;
    color: var(--animal-text-color-body);
    font-weight: 500;
    background: var(--animal-bg-color-input);
    border: 2.5px solid var(--animal-border-color);
    border-radius: var(--animal-radius);
    transition:
        border-color var(--animal-motion-base) var(--animal-motion-ease),
        box-shadow var(--animal-motion-base) var(--animal-motion-ease);
}

.chat-input textarea::placeholder {
    color: var(--animal-text-color-disabled);
    font-weight: 400;
}

.chat-input textarea:hover {
    border-color: var(--animal-border-color-hover);
    box-shadow: 0 3px 0 0 var(--animal-shadow-input);
}

.chat-input textarea:focus {
    border-color: #e0b800;
    outline: none;
    box-shadow:
        0 3px 0 0 #e0b800,
        0 0 0 3px rgba(255, 204, 0, 0.15);
}

.chat-input button {
    min-height: 45px;
    padding: 0 24px;
    color: var(--animal-text-color);
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: var(--animal-bg-color);
    border: 2px solid var(--animal-bg-color);
    border-radius: var(--animal-radius-pill);
    box-shadow: 0 5px 0 0 var(--animal-shadow-btn);
    cursor: pointer;
    transition:
        color var(--animal-motion-fast) var(--animal-motion-ease),
        background-color var(--animal-motion-fast) var(--animal-motion-ease),
        box-shadow var(--animal-motion-fast) var(--animal-motion-ease),
        transform var(--animal-motion-fast) var(--animal-motion-ease);
}

.chat-input button:hover {
    color: var(--animal-primary-color-active);
    background: #fffdf7;
    border-color: #fffdf7;
    box-shadow: 0 6px 0 0 var(--animal-shadow-btn);
    transform: translateY(-1px);
}

.chat-input button:active {
    box-shadow: 0 1px 0 0 var(--animal-shadow-btn);
    transform: translateY(2px);
}

/* Markdown content */
.markdown-content {
    color: var(--animal-text-color-body);
    font-weight: 500;
}

.markdown-content p,
.markdown-content li {
    color: var(--animal-text-color-body);
}

.markdown-content h2 {
    padding-left: 12px;
    border-left: 4px solid var(--animal-primary-color);
}

.markdown-content h3 {
    color: var(--animal-primary-color-active);
}

.markdown-content table {
    overflow-x: auto;
    border: 2px solid var(--animal-border-color);
    border-radius: 14px;
}

.markdown-content th,
.markdown-content td {
    border: 1px solid var(--animal-border-color-light);
}

.markdown-content th {
    color: var(--animal-text-color);
    font-weight: 700;
    background: var(--animal-primary-color-bg);
}

.markdown-content tr:nth-child(even) td {
    background: rgba(240, 232, 216, 0.45);
}

.markdown-content blockquote {
    color: var(--animal-text-color-body);
    background: var(--animal-primary-color-bg);
    border-left-color: var(--animal-primary-color);
    border-radius: 0 16px 16px 0;
}

.markdown-content code {
    color: var(--animal-text-color);
    background: var(--animal-bg-color-secondary);
    border-radius: 8px;
}

.markdown-content pre {
    color: #e8d5bc;
    background: #2b2118;
    border: 2px solid #3d3028;
    border-radius: 20px;
}

.markdown-content pre code {
    color: inherit;
    background: transparent;
}

.markdown-content img {
    border: 2px solid var(--animal-border-color);
    border-radius: 18px;
}

/* Footer */
.site-footer {
    padding: 30px 12px 38px;
    color: var(--animal-text-color-muted);
    background: rgba(255, 252, 244, 0.5);
    border-top: 2px dashed var(--animal-border-color);
}

.site-footer a {
    color: var(--animal-primary-color-active);
    font-weight: 600;
}

.site-footer a:hover {
    color: var(--animal-text-color);
}

/* Focus states */
a:focus-visible,
.chat-input button:focus-visible {
    outline: 2px solid var(--animal-primary-color);
    outline-offset: 2px;
    border-radius: var(--animal-radius-pill);
}

.chat-input textarea:focus-visible {
    outline: none;
}

@media (max-width: 700px) {
    body {
        font-size: 14px;
    }

    .nav {
        align-items: flex-start;
    }

    .brand {
        width: 100%;
    }

    .nav nav {
        width: 100%;
    }

    .nav nav a {
        padding: 7px 11px;
    }

    .hero {
        padding: 42px 20px 30px;
    }

    .hero h1 {
        font-size: 25px;
    }

    .page-head h1 {
        font-size: 25px;
    }

    .card {
        padding: 18px;
    }

    .chat-input {
        flex-direction: column;
    }

    .chat-input button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }

    .album-cards {
        grid-template-columns: 1fr;
    }
}