/* ═══════════════════════════════════════════════════════════════
   YottaQ — start page + sign-in
   ═══════════════════════════════════════════════════════════════ */
.login-page { min-height: 100vh; display: flex; flex-direction: column; }
.bg-canvas { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; opacity: .9; }
.login-page .nav { position: relative; }
.start { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 64px 28px 48px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; flex: 1; width: 100%; }
.start-hero h1 { font-size: clamp(34px, 4.6vw, 58px); line-height: 1.08; letter-spacing: -1.5px; margin: 18px 0 16px; font-weight: 800; word-break: keep-all; overflow-wrap: break-word; }
.start-hero .lead, .start-points, .login-head p { word-break: keep-all; }
.start-hero .lead { color: var(--text-2); font-size: 17px; max-width: 620px; margin: 0 0 22px; }
.start-points { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 10px; }
.start-points li { display: grid; grid-template-columns: 190px 1fr; gap: 14px; padding: 12px 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); font-size: 13.5px; align-items: center; }
.start-points b { font-size: 13.5px; } .start-points span { color: var(--text-2); }
.start-scenarios { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.start-scenarios span { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border-strong); background: var(--surface-2); font-size: 12.5px; font-weight: 600; }
.start-foot { font-size: 12.5px; }

.login-card { padding: 28px; border-color: rgba(34,211,238,.35); box-shadow: 0 30px 90px rgba(34,211,238,.10), var(--shadow); background: linear-gradient(160deg, rgba(34,211,238,.07), rgba(139,92,246,.08)), var(--surface); position: relative; }
.login-head h2 { margin: 0 0 6px; font-size: 22px; letter-spacing: -.3px; }
.login-head p { margin: 0 0 18px; color: var(--text-2); font-size: 13.5px; }
.account-pick { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.account { position: relative; display: grid; grid-template-columns: 38px 1fr; gap: 10px; align-items: center; text-align: left; padding: 12px 12px 12px 10px; border-radius: 14px; border: 1px solid var(--border); background: var(--surface); cursor: pointer; transition: all .15s; color: var(--text); }
.account:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-1px); }
.account.on { border-color: rgba(34,211,238,.6); background: linear-gradient(135deg, rgba(34,211,238,.14), rgba(139,92,246,.14)); box-shadow: inset 0 0 0 1px rgba(34,211,238,.3); }
.account[data-acc="admin"].on { border-color: rgba(168,85,247,.65); box-shadow: inset 0 0 0 1px rgba(168,85,247,.35); }
.acc-ic { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--surface-2); font-size: 19px; }
.acc-body b { display: block; font-size: 13.5px; } .acc-body small { display: block; color: var(--muted); font-size: 11.5px; line-height: 1.35; margin-top: 2px; }
.acc-check { position: absolute; top: 8px; right: 10px; width: 18px; height: 18px; border-radius: 50%; background: var(--grad); color: #fff; font-size: 11px; font-weight: 800; display: none; place-items: center; }
.account.on .acc-check { display: grid; }
#login-form .field { display: block; margin-bottom: 12px; }
#login-form .field > span { display: block; font-size: 12px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
#login-form input[type=text], #login-form input[type=password] { width: 100%; background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 11px 12px; color: var(--text); outline: none; font-family: var(--mono); font-size: 14px; }
#login-form input:focus { border-color: rgba(34,211,238,.6); }
.pass-wrap { position: relative; display: block; }
.pass-wrap input { padding-right: 42px !important; }
.eye { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); border: 0; background: transparent; cursor: pointer; font-size: 15px; opacity: .6; } .eye:hover { opacity: 1; }
.login-error { margin: 2px 0 10px; padding: 9px 12px; border-radius: 10px; background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.4); color: #fca5a5; font-size: 12.5px; }
.login-error[hidden] { display: none; }
#login-btn { margin-top: 6px; }
.login-hint { margin-top: 12px; font-size: 12px; text-align: center; }
.pick-label { margin: 18px 0 10px; font-size: 12px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 10px; }
.pick-label::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.account-pick { margin-bottom: 4px; }
.already { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-2); }
.already[hidden] { display: none; }
.already span { flex: 1 1 100%; }
.start-footer { position: relative; z-index: 1; }
@media (max-width: 980px) { .start { grid-template-columns: 1fr; gap: 28px; padding-top: 36px; } .start-points li { grid-template-columns: 1fr; gap: 4px; } }
@media (max-width: 520px) { .account-pick { grid-template-columns: 1fr; } .login-card { padding: 20px; } }

/* animated atom above the sign-in card ------------------------------------ */
.login-col { display: flex; flex-direction: column; align-items: stretch; }
.start { align-items: center; }
.start-hero { position: relative; }
.start-hero > *:not(.atom-bg) { position: relative; z-index: 1; }
.atom-bg { position: absolute; left: -150px; top: -170px; width: 640px; height: 640px; z-index: 0; pointer-events: none; opacity: .75; }
.atom-bg canvas { width: 100%; height: 100%; display: block; }
@media (max-width: 980px) { .atom-bg { width: 420px; height: 420px; left: -120px; top: -120px; opacity: .5; } }

/* pricing on the start page ------------------------------------------------ */
.start-pricing { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 8px 28px 56px; width: 100%; }
.start-pricing .section-head { margin-bottom: 18px; } .start-pricing .section-head h2 { font-size: 26px; letter-spacing: -.6px; margin: 0 0 6px; font-weight: 800; } .start-pricing .section-head p { margin: 0; color: var(--text-2); }


/* ═══ start page v2 ═══ */
.start-hero h1 .grad { background-size: 200% 200%; animation: gradshift 9s ease-in-out infinite; }
@keyframes gradshift { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
.start-points li { box-shadow: inset 0 1px 0 var(--hairline); transition: transform .18s var(--ease), border-color .18s; } .start-points li:hover { transform: translateX(3px); border-color: var(--border-strong); }
.start-points b::before { content: "◆"; color: var(--accent); font-size: 9px; margin-right: 8px; vertical-align: 2px; }
.trust { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 12.5px; color: var(--text-2); }
.trust li::before { content: "✓"; color: var(--good); font-weight: 800; margin-right: 7px; }
.login-card { box-shadow: 0 30px 90px rgba(34,211,238,.12), inset 0 1px 0 var(--hairline), var(--shadow); }
.login-card::after { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; background: linear-gradient(160deg, rgba(34,211,238,.6), rgba(139,92,246,.25) 40%, transparent 70%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.account { box-shadow: inset 0 1px 0 var(--hairline); }
.plan { box-shadow: inset 0 1px 0 var(--hairline), 0 8px 30px rgba(0,0,0,.22); transition: transform .18s var(--ease), border-color .18s; } .plan:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.plan .price { font-size: 30px; margin: 4px 0 8px; } .plan p[hidden] { display: none; }
.plan-feats { list-style: none; margin: 0 0 16px; padding: 0; display: grid; gap: 7px; font-size: 13px; color: var(--text-2); flex: 1; }
.plan-feats li::before { content: "✓"; color: var(--good); font-weight: 800; margin-right: 8px; }
.plan.popular { border-color: rgba(34,211,238,.6); box-shadow: inset 0 1px 0 var(--hairline), 0 24px 70px rgba(99,102,241,.25); }
.start-pricing .section-head h2 { font-size: 28px; }

/* ═══ start page: section rhythm, dividers, how-it-works, pricing polish ═══ */
.start { padding-bottom: 72px; }
.start-divider { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 0 28px; display: flex; align-items: center; gap: 18px; }
.start-divider::before, .start-divider::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(34,211,238,.45), rgba(139,92,246,.45), transparent); }
.start-divider span { font-size: 11px; font-weight: 800; letter-spacing: 1.6px; text-transform: uppercase; color: var(--accent); padding: 6px 14px; border-radius: 999px; border: 1px solid rgba(34,211,238,.35); background: rgba(34,211,238,.08); white-space: nowrap; }
.eyebrow { display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: 1.4px; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.start-how { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 44px 28px 64px; width: 100%; }
.start-how .section-head { margin-bottom: 22px; } .start-how .section-head h2 { font-size: 28px; letter-spacing: -.6px; margin: 0 0 8px; font-weight: 800; } .start-how .section-head p { margin: 0; color: var(--text-2); max-width: 760px; }
.start-how .how { transition: transform .18s var(--ease), border-color .18s; } .start-how .how:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.start-how .how p { margin-bottom: 0; }
.start-pricing { padding: 44px 28px 70px; }
.start-pricing .section-head { margin-bottom: 24px; }
.plan-note { margin-top: 22px; padding: 16px 20px; border-radius: 14px; border: 1px dashed var(--border-strong); background: rgba(255,255,255,.02); display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; font-size: 13px; color: var(--text-2); }
.plan-note b { color: var(--text); font-size: 12px; letter-spacing: .8px; text-transform: uppercase; }
.plan-note ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; } .plan-note li::before { content: "✓"; color: var(--good); font-weight: 800; margin-right: 7px; }
.start-footer { margin-top: 10px; }
@media (max-width: 980px) { .how-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .how-grid { grid-template-columns: 1fr; } }

/* single enterprise plan */
.plans.single { grid-template-columns: minmax(0, 520px); justify-content: center; }
.plans.single .plan { text-align: center; padding: 34px 30px 30px; }
.plans.single .plan h3 { font-size: 15px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-2); }
.plans.single .plan .price { font-size: 40px; margin: 10px 0 22px; }
.plans.single .ribbon { display: none; }
.start-pricing .section-head { text-align: center; }

/* already signed in: only "open console / sign out" remain */
.login-card.logged #login-form, .login-card.logged .pick-label, .login-card.logged #account-pick, .login-card.logged .login-hint { display: none; }
.login-card.logged .already { border-top: 0; padding-top: 4px; margin-top: 4px; } .login-card.logged .already span { display: none; }
.login-card.logged .already .btn { flex: 1; }

/* square corners (cards / containers); controls keep a small radius, pills stay round */
.panel, .login-card, .account, .start-points li, .plan, .how, .tile, .kpi, .stat, .scenario-info, .recent-list li, .canvas-wrap, .twin-stage, .ent-wrap, .infobox, .steps li, .adv, .ov-recent, .sys-tile, .instance, .plan-note, .foot-grid { border-radius: 0 !important; }
.btn, .tbtn, .icon-btn, input[type=number], input[type=text], input[type=password], select, .seg, .seg button, .tabs, .tabs button, .presets button, .formula, .api pre, .twin-basemap { border-radius: 4px !important; }