:root{color-scheme:light;--bg: #f8f4ef;--bg-accent: #f9d6c2;--ink: #1a1a1a;--muted: #4f4a45;--primary: #c8572e;--secondary: #0a6b6b;--card: rgba(255, 255, 255, .88);--surface: rgba(255, 255, 255, .7);--surface-strong: #ffffff;--surface-muted: rgba(10, 107, 107, .08);--border-color: rgba(26, 26, 26, .12);--border-strong: rgba(26, 26, 26, .2);--border-width: 1px;--radius-card: 24px;--radius-soft: 16px;--radius-pill: 999px;--radius-button: 999px;--font-body: "Trebuchet MS", "Gill Sans", "Segoe UI", Tahoma, sans-serif;--font-display: "Georgia", "Palatino Linotype", "Times New Roman", serif;--button-bg: var(--primary);--button-text: #fff;--button-shadow: 0 12px 20px rgba(200, 87, 46, .3);--ghost-bg: transparent;--ghost-border: rgba(26, 26, 26, .2);--input-bg: #ffffff;--bg-layer-1: radial-gradient(circle at 10% 20%, rgba(43, 93, 138, .25), transparent 55%);--bg-layer-2: radial-gradient(circle at 80% 20%, rgba(90, 122, 166, .22), transparent 45%);--bg-layer-3: linear-gradient(130deg, rgba(238, 241, 246, 1) 0%, rgba(207, 217, 232, .6) 60%, rgba(255, 255, 255, .8) 100%);--shape-1: radial-gradient(circle, rgba(43, 93, 138, .3), rgba(207, 217, 232, .15) 70%);--shape-2: radial-gradient(circle, rgba(90, 122, 166, .35), rgba(238, 241, 246, .2) 70%);--shape-1-size: 280px;--shape-2-size: 220px;--shape-1-pos: 40px 8vw;--shape-2-pos: calc(100% - 220px) -60px;--shadow: 0 18px 40px rgba(18, 18, 18, .18)}[data-theme=atlas]{color-scheme:light;--bg: #eef1f6;--bg-accent: #cfd9e8;--ink: #1a2330;--muted: #4c5b6b;--primary: #2b5d8a;--secondary: #5a7aa6;--card: rgba(255, 255, 255, .92);--surface: rgba(255, 255, 255, .82);--surface-strong: #ffffff;--surface-muted: rgba(43, 93, 138, .1);--border-color: rgba(26, 35, 48, .12);--border-strong: rgba(26, 35, 48, .22);--border-width: 1px;--radius-card: 22px;--radius-soft: 14px;--radius-pill: 999px;--radius-button: 16px;--font-body: "Segoe UI", "Helvetica", sans-serif;--font-display: "Trebuchet MS", "Gill Sans", "Segoe UI", sans-serif;--button-bg: #2b5d8a;--button-text: #ffffff;--button-shadow: 0 12px 20px rgba(43, 93, 138, .3);--ghost-bg: transparent;--ghost-border: rgba(26, 35, 48, .2);--input-bg: #ffffff;--bg-layer-1: radial-gradient(circle at 10% 15%, rgba(43, 93, 138, .25), transparent 55%);--bg-layer-2: radial-gradient(circle at 75% 20%, rgba(90, 122, 166, .22), transparent 45%);--bg-layer-3: linear-gradient(130deg, rgba(238, 241, 246, 1) 0%, rgba(207, 217, 232, .6) 60%, rgba(255, 255, 255, .8) 100%);--shape-1: radial-gradient(circle, rgba(43, 93, 138, .3), rgba(207, 217, 232, .15) 70%);--shape-2: radial-gradient(circle, rgba(90, 122, 166, .35), rgba(238, 241, 246, .2) 70%);--shape-1-size: 300px;--shape-2-size: 220px;--shape-1-pos: 36px 8vw;--shape-2-pos: calc(100% - 220px) -50px;--shadow: 0 18px 40px rgba(26, 35, 48, .16)}[data-theme=velvet]{color-scheme:light;--bg: #f6eee8;--bg-accent: #e6c8bb;--ink: #2b1712;--muted: #6b4d44;--primary: #8b2f2f;--secondary: #b96b4c;--card: rgba(255, 250, 245, .92);--surface: rgba(255, 250, 245, .82);--surface-strong: #fff8f2;--surface-muted: rgba(139, 47, 47, .12);--border-color: rgba(43, 23, 18, .18);--border-strong: rgba(43, 23, 18, .28);--border-width: 2px;--radius-card: 26px;--radius-soft: 18px;--radius-pill: 999px;--radius-button: 999px;--font-body: "Trebuchet MS", "Gill Sans", "Segoe UI", sans-serif;--font-display: "Palatino Linotype", "Book Antiqua", serif;--button-bg: #8b2f2f;--button-text: #fff2e8;--button-shadow: 0 14px 24px rgba(139, 47, 47, .35);--ghost-bg: rgba(255, 242, 232, .6);--ghost-border: rgba(43, 23, 18, .25);--input-bg: #fff5ee;--bg-layer-1: radial-gradient(circle at 15% 20%, rgba(139, 47, 47, .25), transparent 50%);--bg-layer-2: radial-gradient(circle at 80% 30%, rgba(185, 107, 76, .22), transparent 45%);--bg-layer-3: linear-gradient(135deg, rgba(246, 238, 232, 1) 0%, rgba(230, 200, 187, .7) 55%, rgba(255, 248, 242, .9) 100%);--shape-1: radial-gradient(circle, rgba(139, 47, 47, .35), rgba(230, 200, 187, .2) 70%);--shape-2: radial-gradient(circle, rgba(185, 107, 76, .35), rgba(246, 238, 232, .2) 70%);--shape-1-size: 320px;--shape-2-size: 240px;--shape-1-pos: 30px 6vw;--shape-2-pos: calc(100% - 240px) -60px;--shadow: 0 18px 40px rgba(90, 40, 32, .2)}[data-theme=signal]{color-scheme:dark;--bg: #0c0f12;--bg-accent: #2b333b;--ink: #f2f5f7;--muted: #9aa7b3;--primary: #20c997;--secondary: #f7b801;--card: rgba(20, 23, 28, .9);--surface: rgba(20, 23, 28, .75);--surface-strong: #14171c;--surface-muted: rgba(32, 201, 151, .12);--border-color: rgba(242, 245, 247, .14);--border-strong: rgba(242, 245, 247, .24);--border-width: 1px;--radius-card: 16px;--radius-soft: 10px;--radius-pill: 999px;--radius-button: 8px;--font-body: "Segoe UI", "Helvetica", sans-serif;--font-display: "Arial Black", "Impact", sans-serif;--button-bg: #20c997;--button-text: #0c0f12;--button-shadow: 0 12px 22px rgba(32, 201, 151, .45);--ghost-bg: rgba(20, 23, 28, .7);--ghost-border: rgba(242, 245, 247, .22);--input-bg: #14171c;--bg-layer-1: radial-gradient(circle at 12% 18%, rgba(32, 201, 151, .2), transparent 50%);--bg-layer-2: radial-gradient(circle at 80% 22%, rgba(247, 184, 1, .18), transparent 45%);--bg-layer-3: linear-gradient(140deg, rgba(12, 15, 18, 1) 0%, rgba(32, 38, 48, .9) 60%, rgba(12, 15, 18, 1) 100%);--shape-1: radial-gradient(circle, rgba(32, 201, 151, .35), rgba(43, 51, 59, .2) 70%);--shape-2: radial-gradient(circle, rgba(247, 184, 1, .35), rgba(12, 15, 18, .2) 70%);--shape-1-size: 260px;--shape-2-size: 200px;--shape-1-pos: 24px 10vw;--shape-2-pos: calc(100% - 200px) -70px;--shadow: 0 20px 45px rgba(0, 0, 0, .5)}[data-theme=canyon]{color-scheme:light;--bg: #f3efe8;--bg-accent: #e3c7a4;--ink: #2a1d10;--muted: #6d563c;--primary: #b25b22;--secondary: #6d7f3f;--card: rgba(255, 252, 248, .92);--surface: rgba(255, 252, 248, .8);--surface-strong: #fff8ef;--surface-muted: rgba(178, 91, 34, .12);--border-color: rgba(42, 29, 16, .18);--border-strong: rgba(42, 29, 16, .3);--border-width: 2px;--radius-card: 30px;--radius-soft: 22px;--radius-pill: 999px;--radius-button: 14px;--font-body: "Trebuchet MS", "Gill Sans", "Segoe UI", sans-serif;--font-display: "Copperplate", "Palatino Linotype", serif;--button-bg: #b25b22;--button-text: #fff3e6;--button-shadow: 0 14px 26px rgba(178, 91, 34, .35);--ghost-bg: rgba(255, 248, 239, .7);--ghost-border: rgba(42, 29, 16, .26);--input-bg: #fff4e7;--bg-layer-1: radial-gradient(circle at 18% 15%, rgba(178, 91, 34, .25), transparent 55%);--bg-layer-2: radial-gradient(circle at 78% 25%, rgba(109, 127, 63, .22), transparent 48%);--bg-layer-3: linear-gradient(140deg, rgba(243, 239, 232, 1) 0%, rgba(227, 199, 164, .7) 55%, rgba(255, 248, 239, .95) 100%);--shape-1: radial-gradient(circle, rgba(178, 91, 34, .35), rgba(227, 199, 164, .2) 70%);--shape-2: radial-gradient(circle, rgba(109, 127, 63, .35), rgba(243, 239, 232, .2) 70%);--shape-1-size: 340px;--shape-2-size: 240px;--shape-1-pos: 26px 7vw;--shape-2-pos: calc(100% - 240px) -70px;--shadow: 0 18px 40px rgba(90, 54, 20, .22)}[data-theme=glacier]{color-scheme:light;--bg: #eff7fb;--bg-accent: #c8e6f0;--ink: #0f2330;--muted: #4b6470;--primary: #1d9ac6;--secondary: #126b8f;--card: rgba(255, 255, 255, .94);--surface: rgba(255, 255, 255, .85);--surface-strong: #ffffff;--surface-muted: rgba(29, 154, 198, .12);--border-color: rgba(15, 35, 48, .14);--border-strong: rgba(15, 35, 48, .24);--border-width: 1px;--radius-card: 18px;--radius-soft: 12px;--radius-pill: 999px;--radius-button: 10px;--font-body: "Verdana", "Segoe UI", sans-serif;--font-display: "Gill Sans", "Trebuchet MS", sans-serif;--button-bg: #1d9ac6;--button-text: #f3fbff;--button-shadow: 0 12px 20px rgba(29, 154, 198, .3);--ghost-bg: rgba(255, 255, 255, .7);--ghost-border: rgba(15, 35, 48, .18);--input-bg: #ffffff;--bg-layer-1: radial-gradient(circle at 15% 15%, rgba(29, 154, 198, .2), transparent 50%);--bg-layer-2: radial-gradient(circle at 80% 20%, rgba(18, 107, 143, .18), transparent 48%);--bg-layer-3: linear-gradient(135deg, rgba(239, 247, 251, 1) 0%, rgba(200, 230, 240, .7) 55%, rgba(255, 255, 255, .95) 100%);--shape-1: radial-gradient(circle, rgba(29, 154, 198, .3), rgba(200, 230, 240, .2) 70%);--shape-2: radial-gradient(circle, rgba(18, 107, 143, .35), rgba(239, 247, 251, .2) 70%);--shape-1-size: 280px;--shape-2-size: 220px;--shape-1-pos: 40px 9vw;--shape-2-pos: calc(100% - 220px) -60px;--shadow: 0 18px 40px rgba(15, 35, 48, .18)}*{box-sizing:border-box}body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--bg-layer-1),var(--bg-layer-2),var(--bg-layer-3);min-height:100vh}body:before,body:after{content:"";position:fixed;inset:auto;width:260px;height:260px;border-radius:999px;filter:blur(.5px);opacity:.75;z-index:0}body:before{top:0;right:0;background:var(--shape-1);width:var(--shape-1-size);height:var(--shape-1-size);transform:translate(var(--shape-1-pos))}body:after{bottom:0;left:0;background:var(--shape-2);width:var(--shape-2-size);height:var(--shape-2-size);transform:translate(var(--shape-2-pos))}#root{position:relative;z-index:1}.page{padding:48px 18px 72px;max-width:1000px;margin:0 auto;display:grid;gap:28px}.hero{display:grid;gap:12px}.hero h1{margin:0;font-size:clamp(2.2rem,4vw,3.4rem);font-family:var(--font-display)}.hero p{margin:0;color:var(--muted);font-size:1.1rem}.badge{display:inline-flex;align-items:center;justify-content:center;padding:6px 14px;background:var(--secondary);color:#fff;border-radius:999px;font-weight:700;letter-spacing:2px;width:fit-content}.card{background:var(--card);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:var(--border-width) solid var(--border-color)}.login form{display:grid;gap:18px}.auth-toggle{display:inline-flex;gap:8px;background:var(--surface-muted);padding:6px;border-radius:var(--radius-pill);width:fit-content}.toggle{border:none;background:transparent;color:var(--secondary);padding:8px 18px;border-radius:var(--radius-pill);font-weight:700;cursor:pointer}.toggle.active{background:var(--secondary);color:#fff;box-shadow:0 10px 18px #0a6b6b4d}label{display:grid;gap:8px;font-weight:600}input{padding:12px 14px;border-radius:var(--radius-soft);border:var(--border-width) solid var(--border-strong);font-size:1rem;background:var(--input-bg);color:var(--ink)}.cta{background:var(--button-bg);color:var(--button-text);border:none;padding:12px 20px;border-radius:var(--radius-button);font-size:1rem;font-weight:700;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;box-shadow:var(--button-shadow)}.cta:hover{transform:translateY(-2px);box-shadow:0 16px 28px #c8572e59}.cta.small{padding:10px 16px}.ghost{background:var(--ghost-bg);border:var(--border-width) solid var(--ghost-border);padding:8px 14px;border-radius:var(--radius-button);cursor:pointer;color:var(--ink)}.ghost.back{padding:6px 12px}.error{margin:0;color:#9b2d1c;font-weight:600}.chat{display:grid;gap:18px}.app-shell{display:grid;gap:22px}.title-bar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:8px 4px}.title-center{font-size:1.2rem;font-weight:700;letter-spacing:1px;text-align:center}.title-right,.title-left{display:flex;justify-content:flex-end;align-items:center;position:relative}.title-left{justify-content:flex-start}.avatar-button{width:44px;height:44px;border-radius:var(--radius-pill);border:none;background:var(--surface-muted);color:var(--secondary);font-weight:700;cursor:pointer;overflow:hidden;display:flex;align-items:center;justify-content:center}.avatar-button img{width:100%;height:100%;object-fit:cover}.avatar-button:disabled{cursor:default;opacity:.8}.menu{position:absolute;top:54px;right:0;display:grid;gap:8px;background:var(--surface-strong);padding:12px;border-radius:var(--radius-soft);box-shadow:var(--shadow);border:var(--border-width) solid var(--border-color);min-width:140px;z-index:5}.menu button{border:none;background:transparent;text-align:left;font-weight:600;color:var(--ink);cursor:pointer}.room-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:20px}.room-list,.room-create{background:var(--surface);border-radius:var(--radius-soft);padding:20px;border:var(--border-width) solid var(--border-color);display:grid;gap:14px}.room-create form{display:grid;gap:14px}.room-create .cta{margin-top:10px;justify-self:center}.section-title{font-weight:700;letter-spacing:.5px}.room-items{display:grid;gap:10px}.room-chip{display:grid;gap:4px;text-align:left;padding:12px 14px;border-radius:var(--radius-soft);border:var(--border-width) solid var(--border-color);background:var(--surface-strong);cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.room-chip-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.badge-pill{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.4px;padding:4px 8px;border-radius:var(--radius-pill);background:var(--surface-muted);color:var(--secondary);white-space:nowrap}.badge-pill.hot{background:#c8572e2e;color:#9b2d1c}.badge-pill.warm{background:#ffc26e59;color:#8a4d0f}.badge-pill.cool{background:#0a6b6b1f;color:var(--secondary)}.room-chip small{color:var(--muted)}.room-chip:hover{transform:translateY(-2px);box-shadow:0 12px 18px #1a1a1a1f}.room-chip.active{border-color:var(--secondary);box-shadow:0 12px 20px #0a6b6b33}.empty-state{background:var(--surface-muted);border-radius:var(--radius-soft);padding:16px}.empty-state h3{margin:0 0 6px}.room-id{display:inline-block;font-size:.85rem;color:var(--muted)}.chat-header{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.chat-header h2{margin:0}.options{display:grid;gap:16px}.option-card{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px;border-radius:var(--radius-soft);border:var(--border-width) solid var(--border-color);background:var(--surface)}.theme-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}.theme-card{border:var(--border-width) solid var(--border-color);border-radius:var(--radius-soft);padding:14px;background:var(--surface);text-align:left;display:grid;gap:6px;cursor:pointer}.theme-card.active{border-color:var(--secondary);box-shadow:0 12px 20px #0a6b6b33}.online{color:var(--secondary);font-weight:700}.offline{color:#9b2d1c;font-weight:700}.messages{display:grid;gap:14px;max-height:420px;overflow-y:auto;padding-right:6px}.message{background:var(--surface-strong);border-radius:var(--radius-soft);padding:14px 16px;border:var(--border-width) solid var(--border-color)}.meta{display:flex;justify-content:space-between;color:var(--muted);font-size:.9rem;margin-bottom:6px}.message p{margin:0;line-height:1.4}.message-image{margin-top:10px;width:100%;max-height:360px;object-fit:cover;border-radius:var(--radius-soft);border:var(--border-width) solid var(--border-color)}.composer{display:grid;grid-template-columns:1fr auto;gap:12px}.composer-input{display:grid;gap:10px}.composer-actions{display:grid;gap:10px;align-content:start}.attach{position:relative;overflow:hidden;text-align:center}.attach input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.image-preview{background:var(--surface-muted);padding:10px;border-radius:var(--radius-soft);display:grid;gap:8px}.image-preview img{width:100%;max-height:200px;object-fit:cover;border-radius:calc(var(--radius-soft) - 4px)}.image-preview button{align-self:start;border:none;background:transparent;color:var(--secondary);font-weight:600;cursor:pointer;padding:0}.status{text-align:center}@media (max-width: 720px){.page{padding:32px 14px 60px}.hero p{display:none}.card{padding:22px}.room-grid,.composer{grid-template-columns:1fr}.composer-actions{grid-template-columns:repeat(3,minmax(0,1fr))}}