/* Shared application primitives. Marketing pages intentionally keep their own visual language. */
:root{
 --ds-space-1:4px;--ds-space-2:8px;--ds-space-3:12px;--ds-space-4:16px;--ds-space-5:20px;--ds-space-6:24px;--ds-space-8:32px;
 --ds-radius-sm:8px;--ds-radius-md:12px;--ds-radius-lg:16px;--ds-control-height:40px;
 --ds-shadow-menu:0 18px 50px #211a2924,0 2px 8px #211a2914;
 --ds-focus:0 0 0 3px color-mix(in srgb,var(--brand) 22%,transparent);
}
button,input,select,textarea,summary,a{-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:var(--ds-focus)}
.btn,.icon-button,input,select,textarea{transition:border-color .16s ease,background-color .16s ease,color .16s ease,box-shadow .16s ease,transform .16s ease}
.btn{min-height:var(--ds-control-height);border-radius:var(--ds-radius-sm);font-weight:650;letter-spacing:0}
.btn:hover:not(:disabled){border-color:var(--brand-line);background:var(--surface-hover)}
.btn.primary{box-shadow:0 1px 2px #211a2918}
.btn.danger{color:var(--danger-text);border-color:color-mix(in srgb,var(--danger-text) 24%,var(--line));background:var(--danger-bg)}
.btn:disabled,.icon-button:disabled,input:disabled,select:disabled,textarea:disabled{cursor:not-allowed;opacity:.52}
input,select,textarea{min-height:var(--ds-control-height);border-color:var(--line);border-radius:var(--ds-radius-sm);background:var(--surface);color:var(--ink)}
input:hover:not(:disabled),select:hover:not(:disabled),textarea:hover:not(:disabled){border-color:color-mix(in srgb,var(--muted) 52%,var(--line))}
label{color:var(--ink);font-weight:600}.field small{color:var(--muted)}
.card,.api-card,.template-card,.modal,.api-dialog,.inbox-layout{border-radius:var(--ds-radius-lg)}
.table-wrap{overflow:auto;overscroll-behavior-inline:contain;border-radius:inherit}
table{min-width:680px}th{position:sticky;top:0;z-index:1}
.modal-overlay,.api-modal{padding:var(--ds-space-5)}
.modal,.api-dialog{width:min(680px,calc(100vw - 40px));max-height:min(860px,calc(100dvh - 40px));overflow:auto}
.modal.wide{width:min(920px,calc(100vw - 40px))}
.modal-head,.modal-foot{position:sticky;z-index:2;background:var(--surface)}
.modal-head{top:0}.modal-foot{bottom:0;border-top:1px solid var(--line)}
#toast,.onboarding-toast{max-width:min(520px,calc(100vw - 32px));box-shadow:var(--ds-shadow-menu)}

/* Custom select keeps navigation controls visually stable across operating systems. */
.ds-select-native{position:absolute!important;width:1px!important;height:1px!important;min-height:0!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip-path:inset(50%)!important;border:0!important;white-space:nowrap!important}
.ds-select{position:relative;min-width:0;color:var(--ink);font-size:12px;z-index:40}
.ds-select>summary{list-style:none}.ds-select>summary::-webkit-details-marker{display:none}
.ds-select-trigger{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:var(--ds-control-height);padding:8px 11px;border:1px solid var(--line);border-radius:var(--ds-radius-md);background:var(--surface);cursor:pointer;user-select:none}
.ds-select-trigger:hover,.ds-select[open]>.ds-select-trigger{border-color:var(--brand-line);background:var(--surface-hover)}
.ds-select-value{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:650}
.ds-select-chevron{width:7px;height:7px;flex:0 0 7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .16s ease;color:var(--muted)}
.ds-select[open] .ds-select-chevron{transform:rotate(225deg) translate(-2px,-2px)}
.ds-select-menu{position:absolute;top:calc(100% + 8px);left:0;width:max-content;min-width:100%;max-width:min(360px,calc(100vw - 32px));padding:6px;border:1px solid var(--line);border-radius:var(--ds-radius-md);background:var(--surface);box-shadow:var(--ds-shadow-menu);z-index:100}
.ds-select-option{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;min-height:38px;padding:8px 10px;border:0;border-radius:var(--ds-radius-sm);background:transparent;color:var(--ink);font:inherit;text-align:left;white-space:nowrap}
.ds-select-option:hover,.ds-select-option:focus-visible{background:var(--surface-hover)}
.ds-select-option.is-selected{background:var(--brand-soft);color:var(--brand);font-weight:650}
.ds-select-check{opacity:0}.ds-select-option.is-selected .ds-select-check{opacity:1}
.ds-select.is-disabled{opacity:.52;pointer-events:none}
.context-select+.ds-select{width:175px}.workspace-context>.ds-select{width:min(320px,38vw)}
.api-context-selector>.ds-select{width:100%}

/* Production application shell */
.maildo-studio{--studio-rail:272px;background:var(--bg)}
.maildo-studio .studio-rail{width:var(--studio-rail);padding:22px 16px 18px;gap:18px;background:var(--surface);box-shadow:1px 0 0 var(--line)}
.maildo-studio .studio-home{display:flex;width:100%;height:56px;margin:0;padding:8px 10px;align-items:center;justify-content:flex-start;border-radius:var(--ds-radius-md)}
.maildo-studio .studio-home:hover{background:var(--surface-hover)}
.maildo-studio .studio-home .studio-original-logo{width:62px;height:42px;object-fit:contain}
.maildo-studio .studio-rail>nav{width:100%;gap:4px;overflow-y:auto;overflow-x:hidden;padding:2px 0}
.maildo-studio .studio-rail .nav-item{justify-content:flex-start;width:100%;height:43px;min-height:43px;flex-basis:43px;padding:0 12px;gap:12px;border-radius:var(--ds-radius-md);font-size:12px;font-weight:600}
.maildo-studio .studio-rail .nav-item>.studio-icon{width:19px;height:19px;flex:0 0 19px}
.maildo-studio .studio-rail .nav-item.active:before{left:-16px;top:13px;height:17px}
.maildo-studio .studio-nav-label{position:static;inset:auto;display:block;max-width:165px;padding:0;border:0;border-radius:0;background:transparent;color:inherit;box-shadow:none;opacity:1;transform:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;pointer-events:auto;font:inherit}
.maildo-studio .nav-item:hover .studio-nav-label,.maildo-studio .nav-item:focus-visible .studio-nav-label{opacity:1;transform:none}
.maildo-studio .studio-rail>.studio-rail-bottom{width:100%;display:grid;grid-template-columns:minmax(0,1fr) 42px;gap:8px;padding-top:14px;border-top:1px solid var(--line)}
.maildo-studio .studio-workspace{width:100%;height:56px;grid-template-columns:36px minmax(0,1fr);gap:10px;justify-content:start;padding:7px 10px;text-align:left}
.maildo-studio .studio-account-logout{width:42px;height:56px;gap:0;font-size:0}
.maildo-studio .studio-account-logout .studio-icon{width:18px;height:18px}
.maildo-studio .api-main{margin-left:var(--studio-rail);width:calc(100% - var(--studio-rail));padding:0 clamp(24px,3vw,48px) 40px}
.maildo-studio .api-top.studio-header{height:78px;min-height:78px;margin-bottom:30px}
.maildo-studio [data-main-content]{width:100%;max-width:none;margin:0}
.maildo-studio .api-toolbar{gap:20px;align-items:center;margin-bottom:20px}
.maildo-studio .api-card{border-color:var(--line);box-shadow:0 1px 2px #211a2908}
.maildo-studio .api-grid{gap:18px}
.maildo-studio .api-table th,.maildo-studio .api-table td{padding-left:18px;padding-right:18px}
.studio-production-shell .api-main{margin:0;width:100%;padding:0}.studio-production-shell [data-main-content]{max-width:none}
.studio-load-error{max-width:620px;margin:12vh auto;padding:32px}.studio-load-error p{margin:12px 0 24px;color:var(--muted);line-height:1.7}

@media(max-width:760px){
 :root{--ds-control-height:42px}
 .modal-overlay,.api-modal{padding:0;align-items:flex-end}.modal,.api-dialog,.modal.wide{width:100%;max-width:none;max-height:92dvh;border-radius:18px 18px 0 0;border-bottom:0}
 .context-select+.ds-select{width:150px}.workspace-context>.ds-select{width:min(260px,calc(100vw - 112px))}
 table{min-width:620px}
 .maildo-studio{--studio-rail:0px}
 .maildo-studio .studio-rail{width:100%;padding:8px 10px;gap:8px;box-shadow:none}
 .maildo-studio .studio-home{width:48px;height:46px;padding:3px;flex:0 0 48px}
 .maildo-studio .studio-home .studio-original-logo{width:46px;height:36px}
 .maildo-studio .studio-rail>nav{flex:1;width:auto;overflow-x:auto;overflow-y:hidden;padding:0}
 .maildo-studio .studio-rail .nav-item{justify-content:center;width:42px;min-width:42px;height:42px;min-height:42px;flex:0 0 42px;padding:0}
 .maildo-studio .studio-nav-label{display:none}
 .maildo-studio .studio-rail>.studio-rail-bottom{display:flex;width:auto;padding:0;border:0;grid-template-columns:none}
 .maildo-studio .studio-workspace{display:grid;width:38px;height:38px;padding:0;justify-content:center;grid-template-columns:1fr}
 .maildo-studio .api-main{margin:0;width:100%;padding:0 16px 28px}
 .maildo-studio .api-top.studio-header{margin-bottom:20px}
}
@media(prefers-reduced-motion:reduce){.btn,.icon-button,input,select,textarea,.ds-select-chevron{transition:none}}

.studio-brand-logo{display:block;width:104px;height:42px;object-fit:contain;object-position:left center}.studio-brand-logo-dark{display:none}[data-theme=dark] .studio-brand-logo-light{display:none}[data-theme=dark] .studio-brand-logo-dark{display:block}.studio-workspace>span:first-child{display:grid;place-items:center;width:36px;height:36px;flex:0 0 36px;border-radius:50%;background:var(--brand);color:#fff;font-weight:750}.studio-account-copy{display:flex;min-width:0;flex-direction:column;align-items:flex-start;justify-content:center}.studio-account-copy strong,.studio-account-copy small{max-width:100%}.studio-account-copy strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;color:var(--ink)}.studio-account-copy small{white-space:normal;font-size:10px;line-height:1.25;color:var(--muted)}
@media(max-width:820px){.studio-brand-logo{width:42px;object-fit:cover;object-position:left}.studio-account-copy{display:none}.studio-workspace>span:first-child{width:34px;height:34px;flex-basis:34px}}