/* v25: shared plum glass, independent chat scroll, explicit image controls. */
body:is(.chatbot-expanded,.on-assistant-section) .site-header{background:var(--brand-surface-light);color:var(--brand-white)!important}
body:is(.chatbot-expanded,.on-assistant-section) .site-header a,body:is(.chatbot-expanded,.on-assistant-section) .site-header .timeline-label{background:transparent;color:var(--brand-white)!important}
body:is(.chatbot-expanded,.on-assistant-section) .site-header .brand-logo{filter:brightness(0) invert(1)}
body:is(.chatbot-expanded,.on-assistant-section) .site-header .timeline-dot{background:var(--brand-muted)}
#chatbot-section-intro{display:none}
#chatbot-section #chatbot-panel,#chatbot-dock[data-mode=popup] #chatbot-panel{background:var(--brand-surface-light);color:var(--brand-white);border:var(--brand-border-width) solid var(--brand-border);backdrop-filter:var(--brand-glass-blur);box-shadow:var(--brand-shadow)}
#chatbot-section .chatbot-header,#chatbot-dock[data-mode=popup] .chatbot-header{background:transparent;color:var(--brand-white);border-bottom:var(--brand-border-width) solid var(--brand-border)}
#chatbot-section .chatbot-header strong,#chatbot-section .chatbot-footer,#chatbot-dock[data-mode=popup] .chatbot-footer{color:var(--brand-white)}
#chatbot-section [data-cb=compact],#chatbot-section [data-cb=expand]{display:none}
#chatbot-section .chatbot-message{background:color-mix(in srgb,var(--brand-white) 5.098%,transparent);color:var(--brand-white);border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 7.843%,transparent);box-shadow:none;backdrop-filter:none}
#chatbot-section .chatbot-message.user{background:color-mix(in srgb,var(--brand-white) 9.02%,transparent);border-color:color-mix(in srgb,var(--brand-white) 16.078%,transparent)}
#chatbot-section #chatbot-messages{max-width:none;margin:0;scrollbar-gutter:stable;padding:24px clamp(16px,3vw,44px)}

#chatbot-section #chatbot-input{background:color-mix(in srgb,var(--brand-white) 7.059%,transparent)!important;color:var(--brand-white)!important;border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 18.824%,transparent)!important}
#chatbot-section #chatbot-input::placeholder{color:var(--brand-muted)}
#chatbot-messages,#chatbot-media{scrollbar-color:var(--brand-primary) transparent}
#chatbot-messages::-webkit-scrollbar-thumb,#chatbot-media::-webkit-scrollbar-thumb{background:var(--brand-primary)}
#chatbot-section #chatbot-media{background:color-mix(in srgb,var(--brand-plum) 23.922%,transparent);color:var(--brand-white);border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 14.902%,transparent);overflow:hidden;display:flex;flex-direction:column;padding:36px 14px 12px;gap:8px}
#chatbot-section #chatbot-media img{width:100%;min-height:0;flex:1;max-height:none;margin:0}
#chatbot-media figcaption{margin:0;padding:0 42px;font-size:12px;line-height:1.4}
#chatbot-panel [data-cb=previous],#chatbot-panel [data-cb=next]{position:absolute;top:42%;width:44px;height:44px;border-radius:50%;padding:0;font-size:24px;background:var(--brand-plum);color:var(--brand-white);border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 43.922%,transparent);box-shadow:0 4px 16px color-mix(in srgb,var(--brand-plum) 25.098%,transparent);z-index:2}
#chatbot-panel [data-cb=previous]{left:10px}#chatbot-panel [data-cb=next]{right:10px}
#chatbot-panel [data-cb=hide-media]{color:var(--brand-white);z-index:3;min-width:32px;min-height:32px}
#chatbot-media nav{justify-content:center;margin:0;gap:8px;flex-wrap:wrap}
#chatbot-count{position:static;width:auto;height:auto;clip-path:none;font-variant-numeric:tabular-nums;font-size:12px;color:var(--brand-muted)}
#chatbot-dots{gap:2px;flex-wrap:nowrap;max-width:100%;overflow:auto;padding:2px}
#chatbot-panel #chatbot-dots button,.chatbot-lightbox .photo-dots button{width:24px;min-width:24px;height:24px;border:0!important;background:transparent!important;position:relative;padding:0}
#chatbot-dots button:after,.chatbot-lightbox .photo-dots button:after{content:'';display:block;width:7px;height:7px;margin:auto;border-radius:8px;background:color-mix(in srgb,var(--brand-white) 43.922%,transparent);transition:width .15s}
#chatbot-dots button[aria-pressed=true]:after,.chatbot-lightbox .photo-dots button[aria-pressed=true]:after{width:18px;background:var(--brand-primary)}
.projects-menu{background:var(--brand-surface-light);color:var(--brand-white);border:var(--brand-border-width) solid var(--brand-border);backdrop-filter:var(--brand-glass-blur);padding:10px;border-radius:calc(var(--brand-radius) * 0.75);min-width:240px}
.site-header .projects-menu a,.site-header .projects-menu button{color:var(--brand-white)!important;background:transparent;font:inherit;font-size:13px;line-height:1.4;padding:12px 14px;border:0;border-radius:calc(var(--brand-radius-button) * 0.3333333333333333);width:100%;text-align:left}
.site-header .projects-menu a:hover,.site-header .projects-menu button:hover{background:color-mix(in srgb,var(--brand-white) 7.843%,transparent)}
.projects-menu .menu-title{color:var(--brand-muted);opacity:1}
.chatbot-lightbox{background:var(--brand-surface-light);color:var(--brand-white);backdrop-filter:var(--brand-glass-blur)}
.chatbot-lightbox button{color:var(--brand-white)}
.chatbot-lightbox [data-step]{position:absolute;top:45%;background:var(--brand-plum);border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 43.922%,transparent);border-radius:50%;width:48px;height:48px;font-size:24px}
.chatbot-lightbox [data-step='-1']{left:16px}.chatbot-lightbox [data-step='1']{right:16px}
.chatbot-lightbox .photo-dots{gap:2px;max-width:80%;flex-wrap:nowrap;overflow:auto}
@media(max-width:900px){#chatbot-section #chatbot-messages{padding:12px}#chatbot-section #chatbot-media{padding:30px 10px 8px;gap:4px}#chatbot-media figcaption{padding:0 32px;font-size:10px}#chatbot-section #chatbot-media-page{margin:0;font-size:11px;padding:6px 10px}#chatbot-panel [data-cb=previous],#chatbot-panel [data-cb=next]{width:36px;height:36px}#chatbot-dots{max-width:75%}}
@media(prefers-reduced-transparency:reduce){#chatbot-section #chatbot-panel,#chatbot-dock[data-mode=popup] #chatbot-panel,.projects-menu,.chatbot-lightbox,body:is(.chatbot-expanded,.on-assistant-section) .site-header{background:var(--brand-plum);backdrop-filter:none}}

body.chatbot-expanded #chatbot-section{overflow:visible;overscroll-behavior:auto}

#chatbot-section #chatbot-panel:not(.has-media) #chatbot-messages{max-width:none;margin:0;width:100%}
@media(min-width:901px){.site-header .header-timeline{grid-template-columns:repeat(10,minmax(0,1fr))}}
#chatbot-dots button:before,.chatbot-lightbox .photo-dots button:before{display:none!important}
#chatbot-section #chatbot-media #chatbot-dots button,.chatbot-lightbox .photo-dots button{background:transparent!important;box-shadow:none!important}
@media(max-width:900px) and (min-height:571px){#chatbot-section #chatbot-media{flex-basis:clamp(205px,34dvh,290px);height:clamp(205px,34dvh,290px)}}
.site-header .header-timeline .projects-menu :is(a,button):nth-child(n){display:block;min-height:44px;padding:12px 14px;font:inherit;font-size:13px;line-height:1.4;border-radius:calc(var(--brand-radius-button) * 0.3333333333333333);text-align:left;color:var(--brand-white)!important}

/* Message roles remain aligned to opposite edges in full width and split view. */
:is(#chatbot-section,#chatbot-dock) #chatbot-panel .chatbot-message{width:fit-content;max-width:86%;margin:0 auto 18px 0;padding:14px 18px;background:color-mix(in srgb,var(--brand-white) 78%,transparent);color:var(--brand-plum);border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 56.471%,transparent);backdrop-filter:var(--brand-glass-blur);box-shadow:0 3px 12px color-mix(in srgb,var(--brand-plum) 3.922%,transparent);border-radius:6px 18px 18px 18px}
:is(#chatbot-section,#chatbot-dock) #chatbot-panel .chatbot-message.user{max-width:76%;margin-left:auto;margin-right:0;background:color-mix(in srgb,var(--brand-white) 58%,transparent);border-color:color-mix(in srgb,var(--brand-white) 39.608%,transparent);border-radius:18px 6px 18px 18px}
:is(#chatbot-section,#chatbot-dock) #chatbot-panel .chatbot-message small{color:var(--brand-plum);opacity:.7}
#chatbot-section #chatbot-messages{padding:24px}
@media(min-width:901px){#chatbot-section #chatbot-panel:not(.has-media) .chatbot-message{max-width:78%}#chatbot-section #chatbot-panel:not(.has-media) .chatbot-message.user{max-width:70%}}
@media(max-width:900px){#chatbot-section #chatbot-messages{padding:12px}:is(#chatbot-section,#chatbot-dock) #chatbot-panel .chatbot-message{max-width:92%;padding:12px 14px}:is(#chatbot-section,#chatbot-dock) #chatbot-panel .chatbot-message.user{max-width:86%}}

/* Reading plateaus: native scrolling moves through 1800px with a stationary screen. */
#approccio,#chatbot-section{height:calc(100svh + 1800px);overflow:visible}
#approccio .approach-pin{position:sticky;top:var(--reading-top,0px);min-height:100svh}
#chatbot-section{padding:0!important}
#chatbot-section-slot{position:sticky;top:var(--reading-top,0px);height:100dvh;padding:110px var(--page-margin,5vw) 28px;box-sizing:border-box}
@media(max-width:900px){#chatbot-section-slot{padding:90px 12px 64px}}
@media(max-width:900px) and (max-height:570px){#chatbot-section-slot{padding-bottom:56px}}

/* Image workspace: white glass, top title and full-height alignment with the log. */
#chatbot-section .has-media .chatbot-body{padding:16px 0 12px}
#chatbot-section .has-media #chatbot-messages{padding-top:0;padding-bottom:0}
#chatbot-section #chatbot-media{height:100%;margin:0 0 0 12px;padding:18px 16px 14px;gap:12px;align-self:stretch;background:color-mix(in srgb,var(--brand-white) 72%,transparent);color:var(--brand-plum);border:var(--brand-border-width) solid color-mix(in srgb,var(--brand-white) 56.471%,transparent);backdrop-filter:blur(14px);box-shadow:var(--brand-shadow)}
#chatbot-section #chatbot-media figcaption{order:0;display:block;padding:0 36px 0 2px;margin:0;font-size:18px;font-weight:500;line-height:1.35;flex:none;color:var(--brand-plum)}
#chatbot-section #chatbot-media img{order:1;flex:1;min-height:0;width:100%;height:0;max-height:none;border-radius:12px}
#chatbot-section #chatbot-media nav{order:2;flex:none;width:100%;justify-content:center}
#chatbot-section #chatbot-media-page{order:3;margin:0;flex:none}
#chatbot-section #chatbot-count{display:none}
#chatbot-section #chatbot-dots{max-width:100%}
#chatbot-section #chatbot-dots button:after{background:color-mix(in srgb,var(--brand-plum) 38%,transparent)}
#chatbot-section #chatbot-dots button[aria-pressed=true]:after{background:var(--brand-primary)}
#chatbot-section #chatbot-panel [data-cb=hide-media]{top:10px;right:10px;color:var(--brand-plum)}
@media(max-width:900px){#chatbot-section .has-media .chatbot-body{padding:8px 0}#chatbot-section #chatbot-media{height:clamp(220px,35dvh,300px);flex-basis:clamp(220px,35dvh,300px);margin:0 8px 10px;width:calc(100% - 16px);padding:12px;gap:6px}#chatbot-section #chatbot-media figcaption{font-size:16px}#chatbot-section .has-media #chatbot-messages{padding-top:0;padding-bottom:0}}
@media(max-width:900px) and (max-height:570px){#chatbot-section #chatbot-media{height:100%;flex-basis:42%;width:42%;margin:0 0 0 8px;padding:8px;gap:4px}#chatbot-section #chatbot-media figcaption{display:block;font-size:14px}}
@media(max-width:900px) and (max-height:570px){#chatbot-section #chatbot-panel{height:calc(100dvh - 122px)}#chatbot-section-slot{padding-bottom:32px}#chatbot-section .chatbot-header{padding:6px 12px}#chatbot-section #chatbot-form{padding:4px 12px}#chatbot-section #chatbot-input{padding:7px 10px!important}#chatbot-section #chatbot-media{gap:2px;padding:6px 8px}#chatbot-section #chatbot-media figcaption{font-size:13px}#chatbot-section #chatbot-media nav{min-height:24px}}

/* Pop-up grows from the dock, preserving its bottom edge and outer page margin. */
#chatbot-dock[data-mode=popup]{left:auto;right:var(--popup-right,var(--page-margin));bottom:var(--popup-bottom,12px);transform:none;width:min(520px,calc(100vw - 2 * var(--page-margin)));z-index:100}
#chatbot-dock[data-mode=popup] #chatbot-panel{transform-origin:bottom right;max-height:calc(100dvh - 120px);display:flex;flex-direction:column}
#chatbot-dock[data-mode=popup] .chatbot-body{min-height:0;overflow:hidden}
#chatbot-dock[data-mode=popup] #chatbot-form,#chatbot-dock[data-mode=popup] .chatbot-header{flex-shrink:0}
@media(max-width:900px){#chatbot-dock[data-mode=popup]{left:var(--popup-left,var(--page-margin));right:auto;width:calc(100vw - 2 * var(--page-margin));bottom:var(--popup-bottom,max(12px,env(safe-area-inset-bottom)))}#chatbot-dock[data-mode=popup] #chatbot-panel{transform-origin:bottom left}}

/* Shared section rhythm and typography; the conversation has its own branded rail. */
#chatbot-section-slot{padding-top:var(--panel-top);padding-bottom:var(--panel-bottom)}
#chatbot-section #chatbot-panel{height:100%;min-height:0}
#chatbot-section .chatbot-header{padding:18px 24px;flex-shrink:0}
#chatbot-section .chatbot-header strong{font-family:var(--brand-font);font-size:clamp(26px,2.5vw,48px);font-weight:var(--brand-heading-weight);line-height:1.08;letter-spacing:-.045em}
#chatbot-section #chatbot-messages{overscroll-behavior-y:auto}
#chatbot-messages{scrollbar-width:thin;scrollbar-color:var(--brand-primary) color-mix(in srgb,var(--brand-white) 12%,transparent)}
@supports selector(::-webkit-scrollbar){#chatbot-messages{scrollbar-width:auto}#chatbot-messages::-webkit-scrollbar{width:10px}#chatbot-messages::-webkit-scrollbar-track{background:color-mix(in srgb,var(--brand-white) 7.059%,transparent);border-radius:12px;margin-block:8px}#chatbot-messages::-webkit-scrollbar-thumb{background:var(--brand-primary);border:3px solid transparent;background-clip:padding-box;border-radius:12px;min-height:36px}#chatbot-messages::-webkit-scrollbar-thumb:hover{background-color:var(--brand-white)}#chatbot-messages::-webkit-scrollbar-button{display:none;width:0;height:0}}
@media(max-width:900px){#chatbot-section .chatbot-header{padding:12px}#chatbot-section .chatbot-header strong{font-size:clamp(25px,5vw,38px)}}
@media(max-width:900px) and (max-height:570px){#chatbot-section .chatbot-header{padding:6px 12px}#chatbot-section .chatbot-header strong{font-size:26px}#chatbot-section-slot{padding-bottom:32px}}