:root{
  --bg:#ffffff; --text:#111827; --muted:#667185; --line:#e5e7eb;
  --brand:#0ea5e9; --brand-600:#0284c7; --chip:#f8fafc; --card:#fff;
  --shadow:0 6px 18px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font:15px/1.55 Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text); background:var(--bg);
}
a{color:var(--brand); text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px; margin:0 auto; padding:28px 16px}
.card{background:var(--card); border:1px solid var(--line); border-radius:14px; box-shadow:var(--shadow); padding:16px}
.muted{color:var(--muted)}
h1,h2,h3{margin:0 0 10px}
button,.btn{
  appearance:none; border:1px solid var(--line); background:#fff; color:var(--text);
  padding:10px 14px; border-radius:12px; cursor:pointer; transition:.15s;
}
.btn.primary{background:var(--brand); color:#fff; border-color:var(--brand);}
.btn.primary:hover{background:var(--brand-600)}
.btn.link{background:transparent;border-color:transparent;color:var(--brand);padding:0}
input,select,textarea{
  border:1px solid var(--line); border-radius:12px; padding:10px 12px; background:#fff; color:var(--text);
}
.row{display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.grid{display:grid; gap:16px}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.cols-4{grid-template-columns:repeat(2,1fr)} .cols-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.cols-2,.cols-3,.cols-4{grid-template-columns:1fr}}

/* Header */
.header{border-bottom:1px solid var(--line); background:#fff; position:sticky; top:0; z-index:20; backdrop-filter:blur(10px)}
.nav{display:flex; gap:20px; align-items:center; min-height:64px}
.brand{display:flex; align-items:center; gap:12px; font-weight:700; color:inherit}
.brand:hover{text-decoration:none}
.brand-mark{display:inline-flex; align-items:center; justify-content:center; width:34px; height:34px; border-radius:12px; background:linear-gradient(135deg,#38bdf8,#6366f1); color:#fff; font-size:0.9rem; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; box-shadow:var(--shadow)}
.brand-logo{height:30px; width:auto}
.brand-label{font-size:1.05rem; letter-spacing:0.02em}
.nav-links{display:flex; align-items:center; gap:6px; flex-wrap:wrap}
.nav-links>a{color:var(--muted); padding:10px 12px; border-radius:12px; font-weight:600; transition:background .2s ease,color .2s ease}
.nav-links>a:hover{background:#f1f5f9; color:var(--brand-600); text-decoration:none}
.nav-links>a[aria-current="page"]{background:#e0f2fe; color:var(--brand-600); box-shadow:0 8px 18px rgba(14,165,233,.18)}
.nav-dropdown{position:relative}
.nav-dropdown summary{list-style:none; display:flex; align-items:center; gap:6px; padding:10px 12px; border-radius:12px; font-weight:600; color:var(--muted); cursor:pointer; transition:background .2s ease,color .2s ease}
.nav-dropdown summary::after{content:"▾"; font-size:0.65rem; line-height:1; transform:translateY(1px);}
.nav-dropdown summary::marker{display:none}
.nav-dropdown[open] summary, .nav-dropdown[data-active="true"] summary{background:#e0f2fe; color:var(--brand-600); box-shadow:0 8px 18px rgba(14,165,233,.18)}
.nav-dropdown [data-nav-menu]{position:absolute; top:calc(100% + 8px); left:0; min-width:200px; background:#fff; border:1px solid var(--line); border-radius:14px; padding:10px; display:grid; gap:4px; box-shadow:0 18px 38px rgba(15,23,42,.16); z-index:30}
.nav-dropdown [data-nav-menu] a{padding:9px 12px; border-radius:10px; color:var(--text); font-weight:600; display:block}
.nav-dropdown [data-nav-menu] a:hover, .nav-dropdown [data-nav-menu] a[aria-current="page"]{background:#f0f9ff; color:var(--brand-600); text-decoration:none}
.nav .right{margin-left:auto; display:flex; gap:10px; align-items:center}
.avatar{height:28px; width:28px; border-radius:50%; object-fit:cover; border:1px solid var(--line);}

/* Auth modal (div, not <dialog>) */
.modal{position:fixed; inset:0; display:flex; align-items:center; justify-content:center; background:rgba(0,0,0,.28); z-index:50}
.modal.hide{display:none}
.modal .panel{position:relative; width:440px; max-width:92vw}
.modal .close{position:absolute; right:12px; top:12px; background:#111; color:#fff; border-radius:999px; width:28px; height:28px; display:flex; align-items:center; justify-content:center}

/* Hero */
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;padding:28px 0}
.hero .kicker{font-size:13px;letter-spacing:.15em;text-transform:uppercase;color:var(--muted)}
.hero .btnrow{display:flex;gap:10px;margin-top:8px}

/* Chat */
.sidebar{width:280px; border-right:1px solid var(--line); padding:12px}
.chat-wrap{display:flex; min-height:68vh; border:1px solid var(--line); border-radius:14px; overflow:hidden}
.messages{flex:1; display:flex; flex-direction:column}
.msgs{flex:1; padding:12px; overflow:auto; background:#f7fbff}
.msg{background:#fff; border:1px solid var(--line); border-radius:12px; padding:8px 12px; margin:6px 0; max-width:70%}
.msg.me{margin-left:auto; background:#e8f7ff}
.composer{border-top:1px solid var(--line); padding:8px; display:flex; gap:8px; align-items:center}

/* Tools */
.tool{margin-bottom:18px}
.tool h3{margin:0 0 6px}
.tool .pad{padding:10px; border-radius:12px; background:var(--chip); border:1px dashed var(--line)}
.canvas-holder{max-width:100%; overflow:auto}

/* Meetings */
#meet{height:72vh; border:1px solid var(--line); border-radius:14px; overflow:hidden}

/* Footer */
.footer{border-top:1px solid var(--line); padding:18px 16px; color:var(--muted)}

/* Files hub */
.metric-card{display:flex;flex-direction:column;gap:8px}
.metric-value{font-size:28px;font-weight:700}
.metric-sub{color:var(--muted);font-size:13px}
.stack{display:flex;flex-direction:column;gap:12px}
.doc-row{display:flex;flex-direction:column;gap:6px;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:14px;background:#f8fafc;cursor:pointer;transition:.2s}
.doc-row:hover{box-shadow:var(--shadow);background:#fff}
.doc-row.active{border-color:var(--brand);box-shadow:0 10px 25px rgba(14,165,233,.18);background:#fff}
.doc-row .meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 10px;border-radius:999px;font-size:11px;font-weight:600;background:#e2e8f0;color:#0f172a}
.badge.draft{background:#f1f5f9;color:#475569}
.badge.shared{background:#dcfce7;color:#166534}
.badge.archived{background:#fee2e2;color:#b91c1c}
.badge.plan-label{background:#f1f5f9;color:#0f172a}
.empty{padding:28px;text-align:center;border:1px dashed var(--line);border-radius:12px;color:var(--muted);background:#f8fafc}
.detail{display:flex;flex-direction:column;gap:14px}
.detail-section{border:1px solid var(--line);border-radius:12px;padding:14px;background:#f8fafc}
.detail-section h4{margin:0 0 6px}
.detail-section p{margin:0;color:var(--muted);font-size:14px}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{background:#e0f2fe;color:#0369a1;border-radius:999px;padding:3px 10px;font-size:11px;display:inline-flex;align-items:center;gap:6px}
.tag button{border:none;background:transparent;color:inherit;cursor:pointer;padding:0}
.timeline{display:flex;flex-direction:column;gap:12px;max-height:320px;overflow:auto}
.timeline-item{padding-left:14px;border-left:2px solid var(--brand);position:relative}
.timeline-item::before{content:"";position:absolute;left:-7px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--brand)}
.timeline-item strong{display:block;margin-bottom:4px}
.timeline-item span{color:var(--muted);font-size:12px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid var(--line);text-align:left}
.table tbody tr:hover{background:#f8fafc}
.toggle{border:1px solid var(--line);border-radius:12px;padding:4px;display:inline-flex;background:#f8fafc;gap:4px}
.toggle button{border:none;background:transparent;padding:6px 14px;border-radius:10px;cursor:pointer;font-weight:600;color:var(--muted)}
.toggle button.active{background:#fff;color:var(--brand);border:1px solid var(--brand);box-shadow:var(--shadow)}
.plan-card{border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px;background:#fff;box-shadow:var(--shadow)}
.plan-card.highlight{border-color:var(--brand);box-shadow:0 18px 38px rgba(14,165,233,.22)}
.plan-card h3{margin:0}
.plan-price{font-size:30px;font-weight:700}
.plan-price span{font-size:14px;color:var(--muted);font-weight:500}
.plan-features{display:flex;flex-direction:column;gap:8px;padding:0;margin:0}
.plan-features li{list-style:none;position:relative;padding-left:20px;color:var(--muted);font-size:14px}
.plan-features li::before{content:"✔";position:absolute;left:0;color:#16a34a;font-size:12px;top:1px}
.chip{border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:#fff;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer}
.chip.active{background:#0ea5e9;color:#fff;border-color:#0ea5e9}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.form-label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;color:#0f172a}
.form-grid{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}
.form-grid.full{grid-template-columns:1fr}
textarea{min-height:120px}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px}
.section-title h2{margin:0}
.section-subtitle{color:var(--muted);margin:4px 0 18px;font-size:14px}
.toast{position:fixed;bottom:24px;right:24px;padding:12px 18px;background:#0f172a;color:#fff;border-radius:12px;box-shadow:var(--shadow);opacity:0;transform:translateY(16px);transition:.3s;z-index:80}
.toast.show{opacity:1;transform:translateY(0)}

@media (max-width:960px){
  #workspaceGrid{grid-template-columns:1fr!important}
  #metricsRow{grid-template-columns:1fr!important}
}

@media (max-width:640px){
  .section-title{flex-direction:column;align-items:flex-start}
  .section-title .row{width:100%}
  #documentsPanel .row{flex-wrap:wrap}
  #documentsPanel .row button{flex:1}
  .timeline{max-height:none}
}

/* Guest Banner - Matches Tools Page Style */
.guest-banner{
    background:linear-gradient(45deg,#667eea,#764ba2);
    color:#fff;
    padding:1.5rem;
    text-align:center;
    margin:2rem 0;
    border-radius:15px;
    box-shadow:0 8px 25px rgba(102,126,234,.3)
}

.guest-banner h3{
    margin-bottom:.5rem;
    font-size:1.2rem;
    font-weight:700
}

.guest-banner p{
    margin-bottom:1rem;
    opacity:.9;
    max-width:700px;
    margin-left:auto;
    margin-right:auto
}

.feature-tag{
    display:inline-block;
    padding:.4rem .9rem;
    border-radius:20px;
    font-size:.85rem;
    font-weight:500;
    background:rgba(255,255,255,.2);
    color:#fff;
    border:1px solid rgba(255,255,255,.3)
}

/* Guest Notice for Share Modal */
.guest-notice{
    background:#fef3c7;
    border:1px solid #fbbf24;
    border-radius:12px;
    padding:1rem;
    margin-bottom:1.5rem;
    color:#92400e;
    font-size:.9rem
}

.guest-notice strong{
    font-weight:600;
    color:#78350f
}

.guest-notice a{
    color:#92400e;
    text-decoration:underline;
    font-weight:600
}

.guest-notice a:hover{
    color:#78350f
}

.guest-hidden{
    display:none!important
}