:root{--bg-app:#efeae2;--bg-shell:#d7dbd6;--bg-panel:#111b21;--bg-sidebar:#202c33;--bg-card:#202c33;--bg-chat:#0b141a;--bg-message-in:#202c33;--bg-message-out:#005c4b;--bg-compose:#202c33;--line:rgba(255,255,255,0.08);--text-main:#e9edef;--text-soft:#8696a0;--text-tiltle:#2a2b2c;--accent:#00a884;--accent-soft:rgba(0,168,132,0.18);--danger:#ff7b72;--shadow:0 18px 55px rgba(11,20,26,0.28);--radius-xl:22px;--radius-lg:18px;--radius-md:14px;--radius-sm:10px;--font-sans:"Segoe UI","Helvetica Neue",sans-serif}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:radial-gradient(circle at top left,rgba(0,168,132,.24),transparent 24%),linear-gradient(180deg,#d7dbd6 0 17%,#efeae2 17% 100%);color:var(--text-main);font-family:var(--font-sans)}body{min-height:100vh}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.app-shell{min-height:100vh;padding:28px}.dashboard-shell{display:grid;grid-template-columns:380px minmax(0,1fr);height:calc(100vh - 56px);min-height:0;max-width:1440px;margin:0 auto;border-radius:26px;overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(17,27,33,.08);background:var(--bg-panel)}.sidebar{display:flex;flex-direction:column;min-height:0;background:linear-gradient(180deg,rgba(32,44,51,.98),rgba(17,27,33,.98));border-right:1px solid var(--line);z-index:3}.chat-header,.sidebar-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;border-bottom:1px solid var(--line)}.chat-pane{display:grid;grid-template-rows:auto 1fr auto;min-height:0;overflow:hidden;background:linear-gradient(180deg,rgba(11,20,26,.94),rgba(11,20,26,.96)),radial-gradient(circle at center,rgba(0,168,132,.08),transparent 35%)}.conversation-list{overflow:auto;min-height:0;padding:12px}.conversation-card{display:grid;grid-template-columns:auto 1fr auto;grid-gap:14px;gap:14px;padding:14px;border-radius:18px;background:rgba(255,255,255,.04);border-color:rgba(0,168,132,.28);cursor:pointer;transition:transform .14s ease,border-color .14s ease,background .14s ease;margin-top:5px;color:var(--text-main)}.conversation-card.is-active,.conversation-card:hover{transform:translateY(-1px);background:rgba(223,220,220,.95);border:1px solid transparent;color:var(--text-tiltle)}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#00a884,#1f8fff);color:white;font-weight:700}.muted{color:var(--text-soft)}.status-chip{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:var(--accent-soft);color:#87ffdf;font-size:12px}.messages{overflow:auto!important;min-height:0;padding:24px 28px;flex-direction:column;gap:14px}.message-row,.messages{display:flex}.message-row.outbound{justify-content:flex-end}.bubble{max-width:min(78%,620px);padding:12px 14px;border-radius:16px;line-height:1.5;box-shadow:0 10px 24px rgba(0,0,0,.16)}.bubble.inbound{background:var(--bg-message-in)}.bubble.outbound{background:var(--bg-message-out)}.composer{display:grid;grid-template-columns:auto 1fr auto;grid-gap:12px;gap:12px;padding:18px 20px;border-top:1px solid var(--line);background:rgba(32,44,51,.86);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.composer textarea,.input,.login-card input{width:100%;border:1px solid rgba(255,255,255,.08);background:rgba(17,27,33,.82);color:var(--text-main);border-radius:14px;padding:14px 16px;outline:none}.composer textarea{min-height:54px;max-height:140px;resize:vertical}.composer textarea:disabled{background:rgb(60,61,61);color:#03241d}.ghost-button,.icon-button,.primary-button{border:0;cursor:pointer;transition:transform .14s ease,opacity .14s ease,background .14s ease}.ghost-button:hover,.icon-button:hover,.primary-button:hover{transform:translateY(-1px)}.primary-button{padding:13px 18px;border-radius:14px;color:#03241d;font-weight:700;background:linear-gradient(135deg,#25d366,#00a884)}.primary-button:disabled{color:rgb(87,92,92);background:linear-gradient(135deg,#3b413d,#101413)}.ghost-button,.icon-button{padding:12px 14px;border-radius:14px;color:var(--text-main);background:rgba(255,255,255,.06)}.icon-button:disabled{color:#03241d;background:rgba(255,255,255,.06)}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(460px,100%);padding:32px;border-radius:28px;background:rgba(17,27,33,.94);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.06)}.login-card form{display:flex;flex-direction:column;gap:16px}.empty-state{display:grid;place-items:center;text-align:center;padding:32px;color:var(--text-soft)}.attachment-card{margin-top:10px;padding:12px;border-radius:12px;background:rgba(255,255,255,.06)}.top-actions{gap:10px}.chat-title-group,.top-actions{display:flex;align-items:center}.chat-title-group{gap:12px}.mobile-only,.sidebar-backdrop{display:none}@media (max-width:980px){.app-shell{padding:0}.dashboard-shell{position:relative;height:100vh;border-radius:0;grid-template-columns:1fr}.sidebar{position:absolute;inset:0 auto 0 0;width:min(88vw,380px);max-width:100%;transform:translateX(-100%);transition:transform .18s ease;box-shadow:0 20px 40px rgba(0,0,0,.32)}.sidebar.is-open{transform:translateX(0)}.sidebar-backdrop{display:block;position:absolute;inset:0;border:0;background:rgba(11,20,26,.56);z-index:2}.mobile-only{display:inline-flex}.chat-header{align-items:flex-start}.top-actions{flex-wrap:wrap;justify-content:flex-end}.messages{padding:18px 16px}.composer{grid-template-columns:1fr}.bubble{max-width:92%}}