:root {
    --color-bg: #FFFFFF;
    --color-text-main: #000000;
    --btn-std-bg: #FFFFFF;
    --btn-std-border: #000000;
    --btn-std-title: #000000;
    --btn-std-sub: #000000;
    --btn-std-dot: #000000;
    --btn-std-blob: #000000;
    --btn-std-text-hover: #FFFFFF;
    --btn-acc-bg: #25D366;
    --btn-acc-border: #000000;
    --btn-acc-title: #000000;
    --btn-acc-sub: #000000;
    --btn-acc-dot: #000000;
    --btn-acc-blob: #000000;
    --btn-acc-text-hover: #FFFFFF;
    --chat-bg-left: #E0E0E0;
    --chat-text-left: #000000;
    --chat-time-left: #333333;
    --chat-bg-right: #25D366;
    --chat-text-right: #000000;
    --chat-time-right: #003B14;
    --font-serif: "Playfair Display", Georgia, serif;
    --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;
    --uib-color: #000000;
}

[data-theme="dark"] {
    --color-bg: #000000;
    --color-text-main: #FFFFFF;
    --btn-std-bg: #000000;
    --btn-std-border: #FFFFFF;
    --btn-std-title: #FFFFFF;
    --btn-std-sub: #FFFFFF;
    --btn-std-dot: #FFFFFF;
    --btn-std-blob: #FFFFFF;
    --btn-std-text-hover: #000000;
    --btn-acc-bg: #25D366;
    --btn-acc-border: #FFFFFF;
    --btn-acc-title: #000000;
    --btn-acc-sub: #000000;
    --btn-acc-dot: #000000;
    --btn-acc-blob: #FFFFFF;
    --btn-acc-text-hover: #000000;
    --chat-bg-left: #222222;
    --chat-text-left: #FFFFFF;
    --chat-time-left: #AAAAAA;
    --chat-bg-right: #005C26;
    --chat-text-right: #FFFFFF;
    --chat-time-right: #A3E4D7;
    --uib-color: #FFFFFF;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--color-bg); color: var(--color-text-main); font-family: var(--font-sans); min-height: 100vh; display: flex; flex-direction: column; align-items: center; padding: clamp(1rem, 5vw, 2rem); transition: background-color 0.1s, color 0.1s; -webkit-font-smoothing: antialiased; }
header { width: 100%; max-width: 900px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; margin-bottom: clamp(1.5rem, 5vw, 3rem); gap: 1rem; }
.brand-title { font-family: var(--font-serif); font-size: clamp(1.75rem, 6vw, 2.5rem); font-weight: 600; }
.header-actions { display: flex; flex-wrap: wrap; gap: clamp(1rem, 3vw, 1.5rem); align-items: center; }
.main-container { width: 100%; max-width: 900px; display: flex; flex-direction: column; gap: clamp(1.5rem, 4vw, 2rem); }
#chat-stage { display: flex; flex-direction: column; gap: clamp(1.5rem, 4vw, 2rem); align-items: center; display: none; }

.container-loader { --uib-size: 40px; --uib-speed: .8s; --uib-bg-opacity: 0.1; height: var(--uib-size); width: var(--uib-size); transform-origin: center; animation: rotate var(--uib-speed) linear infinite; will-change: transform; overflow: visible; }
.container-loader .car { fill: none; stroke: var(--uib-color); stroke-dasharray: 25, 75; stroke-dashoffset: 0; stroke-linecap: round; transition: stroke 0.5s ease; stroke-width: 5px; }
.container-loader .track { fill: none; stroke: var(--uib-color); opacity: var(--uib-bg-opacity); transition: stroke 0.5s ease; stroke-width: 5px; }
@keyframes rotate { 100% { transform: rotate(360deg); } }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.4); backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; z-index: 1000; padding: 1rem; }
.modal-content { background: var(--color-bg); border: 2px solid var(--btn-std-border); padding: clamp(1.5rem, 5vw, 3rem); border-radius: 24px; width: 100%; max-width: 600px; display: flex; flex-direction: column; align-items: center; gap: 2rem; box-shadow: 0 10px 40px rgba(0,0,0,0.2); }
.modal-desc { font-size: clamp(1rem, 3vw, 1.2rem); font-weight: 500; }
.user-list { display: flex; flex-wrap: wrap; gap: clamp(1rem, 3vw, 1.5rem); justify-content: center; width: 100%; }

.editorial-btn { position: relative; display: inline-flex; align-items: center; justify-content: space-between; gap: clamp(16px, 4vw, 32px); padding: clamp(12px, 3vw, 16px) clamp(20px, 5vw, 28px); border-radius: 100px; cursor: pointer; outline: none; text-decoration: none; isolation: isolate; overflow: hidden; border: 2px solid transparent; }
.editorial-btn.standard { background: var(--btn-std-bg); border-color: var(--btn-std-border); }
.editorial-btn.standard .btn-blob { background-color: var(--btn-std-blob); }
.editorial-btn.standard .btn-subline { color: var(--btn-std-sub); }
.editorial-btn.standard .btn-title { color: var(--btn-std-title); }
.editorial-btn.standard .jelly-container { --uib-color: var(--btn-std-dot); }
.editorial-btn.accent { background: var(--btn-acc-bg); border-color: var(--btn-acc-border); }
.editorial-btn.accent .btn-blob { background-color: var(--btn-acc-blob); }
.editorial-btn.accent .btn-subline { color: var(--btn-acc-sub); font-weight: 600; }
.editorial-btn.accent .btn-title { color: var(--btn-acc-title); }
.editorial-btn.accent .jelly-container { --uib-color: var(--btn-acc-dot); }
.editorial-btn.standard:hover .btn-subline, .editorial-btn.standard:hover .btn-title { color: var(--btn-std-text-hover); }
.editorial-btn.standard:hover .dot, .editorial-btn.standard:hover .traveler, .editorial-btn.standard:hover .jelly-container::before, .editorial-btn.standard:hover .jelly-container::after { background-color: var(--btn-std-text-hover); }
.editorial-btn.accent:hover .btn-subline, .editorial-btn.accent:hover .btn-title { color: var(--btn-acc-text-hover); }
.editorial-btn.accent:hover .dot, .editorial-btn.accent:hover .traveler, .editorial-btn.accent:hover .jelly-container::before, .editorial-btn.accent:hover .jelly-container::after { background-color: var(--btn-acc-text-hover); }

.btn-blob-container { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; }
.btn-blob { position: absolute; width: clamp(150px, 30vw, 200px); height: clamp(150px, 30vw, 200px); border-radius: 50%; transform: translate(-50%, -50%) scale(0); will-change: transform; }
.btn-content { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: flex-start; pointer-events: none; user-select: none; }
.btn-subline-mask, .btn-title-mask { overflow: hidden; display: flex; align-items: center; }
.btn-subline-mask { height: clamp(10px, 2.5vw, 14px); }
.btn-subline { font-family: var(--font-sans); font-size: clamp(0.55rem, 1.5vw, 0.6rem); font-weight: 600; text-transform: uppercase; letter-spacing: 0.25em; display: block; transform: translateY(100%); transition: color 0.1s; }
.btn-title { font-family: var(--font-serif); font-size: clamp(1rem, 2.5vw, 1.2rem); font-weight: 600; letter-spacing: -0.01em; display: block; line-height: 1.2; transition: color 0.1s; }
.btn-icon-wrapper { position: relative; z-index: 2; display: flex; align-items: center; justify-content: center; pointer-events: none; }
.jelly-container { --uib-size: clamp(18px, 4vw, 24px); --uib-speed: 1.75s; position: relative; height: var(--uib-size); width: var(--uib-size); filter: url('#uib-jelly-triangle-ooze'); }
.jelly-container::before, .jelly-container::after, .dot { content: ''; position: absolute; width: 33%; height: 33%; background-color: var(--uib-color); border-radius: 100%; will-change: transform; transition: background-color 0.1s; }
.dot { top: 6%; left: 30%; animation: grow var(--uib-speed) ease infinite; }
.jelly-container::before { bottom: 6%; right: 0; animation: grow var(--uib-speed) ease calc(var(--uib-speed) * -0.666) infinite; }
.jelly-container::after { bottom: 6%; left: 0; animation: grow var(--uib-speed) ease calc(var(--uib-speed) * -0.333) infinite; }
.traveler { position: absolute; top: 6%; left: 30%; width: 33%; height: 33%; background-color: var(--uib-color); border-radius: 100%; animation: triangulate var(--uib-speed) ease infinite; transition: background-color 0.1s; }

@keyframes triangulate { 0%, 100% { transform: none; } 33.333% { transform: translate(120%, 175%); } 66.666% { transform: translate(-95%, 175%); } }
@keyframes grow { 0%, 85%, 100% { transform: scale(1.5); } 50%, 60% { transform: scale(0); } }

.controls { width: 100%; display: flex; flex-wrap: wrap; gap: clamp(1rem, 3vw, 1.5rem); justify-content: flex-end; }
.share-box { display: flex; flex-direction: column; gap: 1rem; width: 100%; align-items: center; }
@media (min-width: 601px) { .share-box { flex-direction: row; } }
.share-input { flex: 1; width: 100%; padding: clamp(0.75rem, 2vw, 1rem); border-radius: 100px; background: transparent; color: var(--color-text-main); border: 2px solid var(--btn-std-border); font-family: var(--font-sans); text-align: center; outline: none; font-weight: 600; font-size: clamp(0.75rem, 2vw, 0.95rem); }

.chat-container { width: 100%; display: flex; flex-direction: column; gap: 0.5rem; border: 2px solid var(--btn-std-border); border-radius: 12px; padding: clamp(1rem, 4vw, 1.5rem); height: clamp(50vh, 65vh, 75vh); overflow-y: auto; background: var(--color-bg); position: relative; }
.message { max-width: 85%; padding: clamp(0.6rem, 2vw, 0.85rem) clamp(0.75rem, 2.5vw, 1rem); border-radius: 12px; position: relative; word-wrap: break-word; font-size: clamp(0.85rem, 2.5vw, 0.95rem); line-height: 1.4; margin-bottom: 0.5rem; }
.message.left { align-self: flex-start; background-color: var(--chat-bg-left); color: var(--chat-text-left); border-bottom-left-radius: 4px; }
.message.right { align-self: flex-end; background-color: var(--chat-bg-right); color: var(--chat-text-right); border-bottom-right-radius: 4px; }
.msg-name { font-size: clamp(0.7rem, 2vw, 0.8rem); font-weight: 600; margin-bottom: 0.3rem; }
.msg-time { font-size: clamp(0.6rem, 1.8vw, 0.7rem); text-align: right; margin-top: 0.4rem; font-weight: 600; display: flex; justify-content: flex-end; align-items: center; gap: 4px; }
.message.left .msg-time { color: var(--chat-time-left); }
.message.right .msg-time { color: var(--chat-time-right); }
.media-attachment { max-width: 100%; border-radius: 8px; margin-top: 0.5rem; display: block; }
.reaction-badge { position: absolute; bottom: -12px; right: 10px; background: var(--color-bg); border: 1px solid var(--btn-std-border); border-radius: 12px; padding: 2px 6px; font-size: 0.85rem; box-shadow: 0 2px 5px rgba(0,0,0,0.1); z-index: 10; display: flex; align-items: center; gap: 4px; }

@media (min-width: 601px) { .message { max-width: 75%; } }
@media (max-width: 600px) { header { flex-direction: column; justify-content: center; } .header-actions { flex-direction: column; width: 100%; } .controls { flex-direction: column; width: 100%; } .editorial-btn { width: 100%; justify-content: space-between; } .user-btn { width: 100%; } #btn-copy { width: 100%; justify-content: space-between; } }
@media print { body { padding: 0; background: #FFFFFF; color: #000000; } header, .controls, #share-link-container { display: none !important; } .chat-container { border: none; height: auto; overflow: visible; padding: 0; } #chat-stage { display: flex !important; } }