/* TechThots India — app shell (sidebar + topbar + page frame + chat overlay). Tokens: css/theme.css */
:root{--sidebar:256px;--topbar:56px;--r:12px;--rs:8px;--ease:cubic-bezier(.4,0,.2,1);--tr:all .25s var(--ease)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;background:var(--bg2);color:var(--tp);-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:none;background:none;font-family:inherit;color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--sb);border-radius:3px}
.i{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.app-wrap{display:flex;height:100vh;height:100dvh;width:100vw;overflow:hidden}

/* Sidebar */
.sidebar{width:var(--sidebar);height:100%;flex-shrink:0;background:var(--sur);border-right:1px solid var(--brd);display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;z-index:100;transition:transform .3s var(--ease),background .3s}
.sb-head{padding:18px 16px 14px;border-bottom:1px solid var(--brd);flex-shrink:0}
.sb-logo{display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--brd);border-radius:12px;padding:10px 14px;min-height:64px}
.sb-logo img{height:44px;width:auto;max-width:100%;object-fit:contain}
.sb-tag{font-size:11px;color:var(--tm);text-align:center;margin-top:9px}
.sb-body{flex:1;overflow-y:auto;padding:10px}
.nav-lbl{font-size:10px;text-transform:uppercase;letter-spacing:.14em;color:var(--tm);padding:14px 8px 6px;font-weight:700}
.nav-links{display:flex;flex-direction:column;gap:2px}
.nl{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:var(--rs);font-size:13px;font-weight:600;color:var(--ts);transition:var(--tr);white-space:nowrap;border:1px solid transparent}
.nl:hover{color:var(--tp);background:var(--ag)}
.nl.active{color:var(--ac);background:var(--ag);border-color:rgba(79,132,196,.25)}
.nl-badge{margin-left:auto;background:var(--btn);color:#fff;font-size:10px;padding:1px 7px;border-radius:10px;font-weight:700}
.nl-new{margin-left:auto;background:var(--ok);color:#fff;font-size:10px;padding:1px 7px;border-radius:10px;font-weight:700}
[data-theme="dark"] .nl-new{color:#06260f}
.sb-foot{padding:12px;border-top:1px solid var(--brd);flex-shrink:0;display:flex;flex-direction:column;gap:10px}
.sb-soc{display:flex;gap:6px;justify-content:center;flex-wrap:wrap}
.sob{width:30px;height:30px;border-radius:8px;background:var(--card);border:1px solid var(--brd);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;color:var(--ts);transition:var(--tr)}
.sob:hover{background:var(--btn);color:#fff;border-color:var(--btn);transform:translateY(-2px)}
.sb-cta{display:flex;gap:6px}
.sb-cta a,.sb-cta button{flex:1;padding:9px 6px;border-radius:var(--rs);text-align:center;font-size:12px;font-weight:700;transition:var(--tr)}
.cta-p{background:var(--btn);color:#fff}.cta-p:hover{background:var(--btn-h);transform:translateY(-1px)}
.cta-g{border:1px solid var(--brd);color:var(--ts)}.cta-g:hover{border-color:var(--blue);color:var(--ac);transform:translateY(-1px)}

/* Main + topbar */
.main{flex:1;display:flex;flex-direction:column;height:100%;overflow:hidden;min-width:0}
.topbar{height:var(--topbar);flex-shrink:0;background:var(--tpbg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--brd);padding:0 24px;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:50}
.tp-title{font-size:14px;font-weight:700;color:var(--tp)}
.tp-right{display:flex;align-items:center;gap:10px}
.avail-pill{display:inline-flex;align-items:center;gap:6px;background:var(--okd);border:1px solid rgba(22,128,60,.25);padding:4px 12px;border-radius:20px;font-size:11px;color:var(--ok);font-weight:700}
.avail-pill::before{content:'';width:6px;height:6px;background:var(--ok);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.exp-tag{font-size:11px;color:var(--tm);font-weight:600}.exp-tag strong{color:var(--ac)}
.theme-btn{width:34px;height:34px;border-radius:50%;background:var(--card);border:1px solid var(--brd);display:flex;align-items:center;justify-content:center;color:var(--ts);transition:var(--tr)}
.theme-btn:hover{border-color:var(--blue);color:var(--ac);transform:rotate(20deg)}
#progress{position:absolute;bottom:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--blue),#38d9a9);transition:width .3s var(--ease);border-radius:0 2px 2px 0}

/* Page frame */
.frame-wrap{flex:1;position:relative;overflow:hidden;background:var(--bg)}
.pg-loader{position:absolute;inset:0;z-index:10;background:var(--bg);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s}
.pg-loader.show{opacity:1;pointer-events:all}
.spin-ring{width:34px;height:34px;border:3px solid var(--ag);border-top-color:var(--blue);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
#pageFrame{width:100%;height:100%;border:none;display:block;background:var(--bg)}

/* Toasts, mobile toggle, back-to-top */
#toastWrap{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);z-index:9998;display:flex;flex-direction:column;gap:7px;pointer-events:none}
.toast{padding:10px 16px;border-radius:10px;font-size:13px;font-weight:600;color:#fff;box-shadow:0 4px 16px rgba(0,0,0,.2);max-width:300px;pointer-events:auto;animation:toastIn .25s var(--ease)}
@keyframes toastIn{from{opacity:0;transform:translateY(8px) scale(.95)}to{opacity:1;transform:none}}
.toast.s{background:#047857}.toast.e{background:#c53030}.toast.i{background:#2f5f9c}.toast.w{background:#b45309}
.mob-toggle{display:none;position:fixed;top:11px;left:10px;z-index:200;width:34px;height:34px;border-radius:var(--rs);background:var(--sur);border:1px solid var(--brd);align-items:center;justify-content:center;color:var(--ts)}
.sb-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:99;backdrop-filter:blur(3px)}
#btt{position:fixed;bottom:100px;right:22px;width:38px;height:38px;border-radius:10px;background:var(--btn);color:#fff;display:flex;align-items:center;justify-content:center;z-index:480;opacity:0;pointer-events:none;transition:var(--tr);box-shadow:0 4px 14px rgba(63,115,179,.4)}
#btt.vis{opacity:1;pointer-events:auto}#btt:hover{transform:translateY(-3px)}

/* Chatbot overlay: collapsed = launcher only; open = sized to the chat window (height reported by the bot) */
#chat-frame{position:fixed;bottom:0;right:0;width:120px;height:120px;border:none;z-index:490;background:transparent;display:block;transition:width .3s var(--ease),height .3s var(--ease)}
#chat-frame.chat-open{width:420px}

@media(max-width:900px){
 .sidebar{position:fixed;top:0;left:0;height:100%;transform:translateX(-100%);z-index:150}
 .sidebar.open{transform:translateX(0)}
 .sb-overlay.open{display:block}
 .mob-toggle{display:flex}
 .topbar{padding:0 12px 0 54px}
 .exp-tag{display:none}
}
@media(max-width:600px){.avail-pill{display:none}}
@media(max-width:480px){#chat-frame.chat-open{width:100%}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}