/* Alca Conect: interfaz responsiva, accesible y sin dependencias visuales. */
:root {
  color-scheme: light;
  --accent: #FF5500;
  --accent-hover: #D94800;
  --bg: #F0F2F5;
  --surface: #FFFFFF;
  --text: #1C1E21;
  --muted: #646A73;
  --border: #E1E4E8;
  --soft: #F6F7F9;
  --shadow: 0 4px 18px rgb(23 28 36 / 4%);
  --danger: #B32329;
  --success: #217247;
  --topbar-height: 70px;
  --sidebar-width: 280px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121212;
  --surface: #1E1E1E;
  --text: #F5F5F5;
  --muted: #A7A7A7;
  --border: #2E2E2E;
  --soft: #252525;
  --shadow: 0 4px 18px rgb(0 0 0 / 18%);
  --danger: #FF8888;
  --success: #75C69A;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 14px; line-height: 1.5; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
button:disabled { opacity: .44; cursor: not-allowed; }
button, input, textarea, select { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid rgb(255 85 0 / 38%); outline-offset: 2px; }
[hidden] { display: none !important; }
a { color: var(--accent); }
h1,h2,h3,h4,p { margin-top: 0; }
h1,h2,h3 { letter-spacing: -.025em; }
h1 { font-size: clamp(30px,4vw,45px); line-height: 1.12; }
h2 { font-size: 22px; }
h3 { font-size: 17px; }
svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 13px; box-shadow: var(--shadow); }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.eyebrow,.section-kicker { font-size: 11px; letter-spacing: .16em; font-weight: 800; color: var(--accent); }
.row { display:flex; align-items:center; }
.justify-between { justify-content:space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.full { width: 100%; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
.btn { border-radius: 9px; border: 1px solid var(--border); padding: 10px 15px; background: var(--surface); color: var(--text); font-weight: 700; transition: background .15s, border .15s, transform .1s; text-align: center; }
.btn:active { transform: translateY(1px); }
.btn:hover:not(:disabled) { background: var(--soft); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-secondary { color: var(--accent); background: rgb(255 85 0 / 8%); border-color: transparent; }
.btn-secondary:hover:not(:disabled) { background: rgb(255 85 0 / 14%); }
.btn-text { background: transparent; border-color: transparent; color: var(--muted); }
.btn-outline-danger { color: var(--danger); border-color: var(--border); }
.btn-sm { font-size: 12px; padding: 7px 11px; }
.btn-pill { border-radius: 999px; }
.icon-btn { border: none; background: transparent; color: var(--text); display: grid; place-items: center; width: 37px; height: 37px; border-radius: 9px; }
.icon-btn:hover { background: var(--soft); }
input:not([type="file"]),textarea,select { width:100%; padding: 11px 12px; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 8px; outline: none; }
input:focus,textarea:focus,select:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 110px; }
label { display: block; font-size: 12px; font-weight: 750; margin: 13px 0 6px; }
.field-help { font-size: 11px; color: var(--muted); margin: 5px 0 16px; }
.form-error { color: var(--danger); font-size: 12px; font-weight: 600; margin: 10px 0; }
.empty-state { border: 1px dashed var(--border); border-radius: 12px; padding: 46px 25px; text-align: center; background: var(--surface); }
.empty-state h3 { font-size: 17px; margin-bottom: 7px; }
.empty-state p { color: var(--muted); max-width: 390px; margin: 0 auto; }
.empty-symbol { margin: 0 auto 13px; border-radius: 15px; background: var(--soft); display: grid; place-items: center; width: 47px; height: 47px; color: var(--accent); font-weight: 800; font-size: 21px; }
.notice { padding: 12px 14px; border-radius: 9px; border: 1px solid var(--border); background: var(--soft); color: var(--muted); font-size: 13px; }
.warning { border-left: 3px solid #D18B19; }
.success-text { color: var(--success); }
.danger-text { color: var(--danger); }
.chip { font-size: 11px; color: var(--accent); font-weight: 750; display: inline-flex; align-items: center; background: rgb(255 85 0 / 9%); border: 1px solid rgb(255 85 0 / 10%); border-radius: 999px; padding: 4px 10px; }
.chip-neutral { color: var(--muted); background: var(--soft); border-color: var(--border); }

/* Portada de acceso */
.auth-screen { min-height:100vh; display:grid; grid-template-columns: minmax(290px,1fr) minmax(350px,430px); align-items:center; gap: clamp(28px,7vw,115px); width:min(1110px,calc(100% - 52px)); margin:auto; padding: 40px 0; }
.auth-brand { padding-bottom: 45px; }
.brand-mark { background: var(--accent); color: white; border-radius: 22px; display:grid; place-items:center; width:73px; height:73px; font-size: 41px; font-weight: 800; letter-spacing:-.1em; margin-bottom: 35px; }
.auth-brand h1 { margin: 8px 0 15px; font-size: clamp(45px,5vw,67px); letter-spacing: -.065em; }
.auth-brand h1 span { color: var(--accent); }
.auth-brand > p:not(.eyebrow) { color: var(--muted); font-size: 18px; max-width: 450px; }
.auth-highlights { display:flex; gap: 9px; flex-wrap:wrap; margin-top: 30px; }
.auth-highlights span { padding: 7px 13px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--muted); font-size: 12px; font-weight: 650; }
.auth-card { padding: 29px; }
.auth-topline { display:flex; align-items:center; justify-content:space-between; }
.auth-card h2 { margin: 12px 0 3px; }
.auth-subtitle { font-size: 13px; margin-bottom: 20px; }
.segmented { display:flex; padding: 4px; gap:4px; border-radius: 10px; background: var(--soft); }
.segmented button { flex: 1; border:none; background:transparent; padding:10px; border-radius:8px; color:var(--muted); font-weight:700; }
.segmented button.selected { background:var(--surface); color:var(--text); box-shadow: 0 2px 5px rgb(0 0 0 / 7%); }
.auth-mode-switch { display:flex; align-items:center; gap: 21px; margin: 23px 0 7px; border-bottom: 1px solid var(--border); }
.auth-mode-switch button { border:0; border-bottom:2px solid transparent; background:transparent; padding: 0 0 10px; color:var(--muted); font-weight:700; }
.auth-mode-switch button.active { border-bottom-color:var(--accent); color:var(--text); }
.auth-card form .btn-primary { margin-top: 12px; }
.upload-label { display:flex; align-items:center; justify-content:space-between; gap:6px; background:var(--soft); border:1px dashed var(--border); border-radius:8px; padding:10px; cursor:pointer; margin-top:10px; font-weight:500; }
.upload-action { color:var(--accent); font-weight:750; white-space:nowrap; }
.auth-footnote { font-size:11px; text-align:center; color:var(--muted); margin: 20px 0 0; }
.reader-explainer { padding:20px; background:var(--soft); border-radius:9px; margin:25px 0 16px; }
.reader-explainer p { margin:6px 0 0; color:var(--muted); }
.demo-code { display:flex; align-items:center; flex-direction:column; gap:6px; padding:17px; margin:20px 0; border:1px dashed var(--accent); border-radius:10px; background:rgb(255 85 0 / 6%); }
.demo-code strong { font-size:30px; letter-spacing:.23em; font-variant-numeric:tabular-nums; }
.demo-code small,.demo-code span { font-size:12px; color:var(--muted); }

/* Cabecera y estructura general */
.topbar { height:var(--topbar-height); padding:0 25px; position:fixed; z-index:30; left:0; right:0; top:0; background:var(--surface); border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; gap:15px; }
.topbar-left,.topbar-right { display:flex; align-items:center; gap:12px; }
.logo-lockup { display:flex; gap:12px; align-items:center; border:0; background:transparent; color:var(--text); font-size:19px; font-weight:800; letter-spacing:-.05em; padding:0; white-space:nowrap; }
.logo-lockup b { color:var(--accent); }
.mini-mark { display:grid; place-items:center; width:39px; height:39px; background:var(--accent); color:#fff; border-radius:11px; font-size:25px; font-weight:800; letter-spacing:-.09em; }
.top-action { display:flex; align-items:center; justify-content:center; gap:8px; position:relative; background:transparent; border:1px solid transparent; border-radius:8px; min-height:39px; padding:7px 12px; color:var(--muted); font-weight:700; font-size:12px; }
.top-action:hover { background:var(--soft); color:var(--text); }
.counter { display:inline-flex; justify-content:center; align-items:center; min-width:18px; height:18px; padding:0 4px; border-radius:999px; background:var(--accent); color:#fff; font-size:10px; }
.mobile-menu-btn { display:none; font-size:19px; }
.sidebar { position:fixed; z-index:22; left:0; top:var(--topbar-height); bottom:0; width:var(--sidebar-width); padding:23px 16px 26px; overflow:auto; border-right:1px solid var(--border); }
.profile-card { padding:16px; margin-bottom:20px; }
.profile-main { display:flex; gap:11px; align-items:center; }
.profile-card h3 { font-size:15px; margin:0; overflow-wrap:anywhere; }
.profile-email { color:var(--muted); font-size:11px; overflow-wrap:anywhere; margin:3px 0; }
.profile-age { color:var(--muted); font-size:12px; margin: 4px 0 0; }
.avatar { flex:none; border-radius:50%; overflow:hidden; display:grid; place-items:center; background:#FFE2D0; color:#A43E07; font-weight:800; object-fit:cover; border:1px solid rgb(255 85 0 / 14%); }
:root[data-theme="dark"] .avatar { background:#54301F; color:#FFB28C; }
.avatar-52 { width:52px; height:52px; font-size:19px; }
.avatar-42 { width:42px; height:42px; font-size:15px; }
.avatar-36 { width:36px; height:36px; font-size:13px; }
.avatar-64 { width:64px; height:64px; font-size:23px; }
.profile-actions { display:grid; grid-template-columns:1fr 1fr; gap:6px; margin-top:14px; }
.profile-actions .btn { padding:8px 4px; font-size:11px; }
.menu-label { font-size:10px; font-weight:800; letter-spacing:.13em; color:var(--muted); padding:0 12px; margin: 14px 0 8px; }
.nav-list { display:grid; gap:5px; }
.nav-item { width:100%; text-align:left; display:flex; align-items:center; gap:13px; padding:12px 13px; border:0; border-radius:9px; background:transparent; color:var(--muted); font-weight:700; }
.nav-item:hover { background:var(--soft); color:var(--text); }
.nav-item.active { background:rgb(255 85 0 / 9%); color:var(--accent); }
.nav-icon { font-size:17px; line-height:1; width:23px; text-align:center; }
.nav-count { margin-left:auto; background:var(--accent); color:white; padding:1px 7px; border-radius:99px; font-size:11px; }
.sidebar-note { margin:24px 12px; font-size:11px; line-height:1.6; color:var(--muted); }
.main-content { margin-left:var(--sidebar-width); padding: 103px 34px 70px; width:calc(100% - var(--sidebar-width)); }
.main-inner { max-width:765px; margin:auto; }
.page-header { display:flex; align-items:flex-start; justify-content:space-between; gap:18px; margin-bottom:23px; }
.page-header h1 { font-size:25px; margin:5px 0 5px; }
.page-header p { margin:0; color:var(--muted); font-size:13px; }
.tag-demo { font-size:11px; color:var(--muted); border:1px solid var(--border); border-radius:999px; padding:5px 10px; white-space:nowrap; }

/* Muro y publicaciones */
.composer { padding:19px; margin-bottom:16px; }
.composer .heading { display:flex; align-items:center; gap:11px; margin-bottom:16px; }
.composer .heading strong { display:block; }
.composer .heading p { font-size:12px; margin:2px 0 0; color:var(--muted); }
.composer textarea { margin-bottom:10px; }
.composer-fields { display:flex; flex-wrap:wrap; align-items:end; gap:12px; }
.composer-fields .field { flex:1; min-width:195px; }
.composer-fields .field label { margin-top:0; }
.composer-actions { display:flex; justify-content:space-between; gap:8px; align-items:center; margin-top:16px; padding-top:14px; border-top:1px solid var(--border); }
.image-preview { margin-top:12px; padding:8px; border:1px solid var(--border); border-radius:9px; display:flex; align-items:center; gap:12px; }
.image-preview img { width:105px; height:77px; object-fit:cover; border-radius:7px; }
.feed-heading { font-size:12px; letter-spacing:.04em; font-weight:800; color:var(--muted); display:flex; justify-content:space-between; margin:21px 3px 12px; }
.post { padding:18px; margin-bottom:15px; }
.post-top { display:flex; justify-content:space-between; gap:10px; }
.post-who { display:flex; gap:11px; align-items:center; min-width:0; }
.post-author { margin:0; font-size:14px; font-weight:800; }
.post-email { margin:0; font-size:11px; color:var(--muted); overflow-wrap:anywhere; }
.post-date { color:var(--muted); font-size:11px; white-space:nowrap; }
.post-body { font-size:14px; white-space:pre-wrap; overflow-wrap:anywhere; line-height:1.65; margin:15px 0; }
.post-image { width:100%; max-height:430px; border-radius:9px; object-fit:contain; background:var(--soft); display:block; margin-bottom:14px; }
.post-details { display:flex; align-items:center; gap:8px; flex-wrap:wrap; margin:12px 0; }
.post-interactions { border-top:1px solid var(--border); border-bottom:1px solid var(--border); display:flex; align-items:center; gap:8px; padding:7px 0; margin:13px 0 11px; }
.react-btn { border:0; background:transparent; color:var(--muted); font-weight:750; font-size:12px; border-radius:7px; padding:7px 10px; }
.react-btn:hover { background:var(--soft); }
.react-btn.liked { color:var(--accent); background:rgb(255 85 0 / 8%); }
.comments-heading { font-size:12px; font-weight:800; margin:0 0 10px; }
.comment { display:flex; align-items:flex-start; gap:8px; margin:11px 0; }
.comment-content { background:var(--soft); border-radius:10px; padding:8px 11px; flex:1; min-width:0; }
.comment-content strong { font-size:12px; }
.comment-content time { color:var(--muted); font-size:10px; margin-left:7px; }
.comment-content p { margin:4px 0 0; overflow-wrap:anywhere; white-space:pre-wrap; font-size:12px; }
.comment-form { display:flex; gap:8px; margin-top:13px; }
.comment-form input { flex:1; min-width:0; }
.comment-form .btn { flex:none; }

/* Personas, solicitudes y notificaciones */
.people-search { padding: 17px; margin-bottom: 16px; }
.people-search label { margin: 0 0 7px; }
.people-search p { margin: 7px 0 0; }
#sin-resultados-personas { padding: 14px; text-align: center; }
.people-list { display:grid; gap:12px; }
.person-row { display:flex; align-items:center; gap:12px; padding:15px; }
.person-info { flex:1; min-width:0; }
.person-info strong { display:block; font-size:14px; }
.person-info .muted { display:block; font-size:11px; overflow-wrap:anywhere; }
.person-actions { display:flex; align-items:center; gap:6px; flex-wrap:wrap; justify-content:end; }
.person-status { display:inline-flex; align-items:center; gap:6px; font-size:12px; color:var(--success); font-weight:750; }
.person-status:before { content:""; display:block; width:7px; height:7px; border-radius:50%; background:var(--success); }
.notifications-holder { position:relative; }
.notifications-popover { position:absolute; right:0; top:48px; width:min(380px,calc(100vw - 30px)); padding:15px; max-height:60vh; overflow-y:auto; box-shadow:0 16px 35px rgb(0 0 0 / 14%); z-index:35; }
.notifications-popover h3 { font-size:15px; margin:0 0 12px; }
.notification { border-top:1px solid var(--border); padding:11px 0; }
.notification p { font-size:12px; margin:0 0 7px; }
.notification time { font-size:10px; color:var(--muted); }
.notification-actions { display:flex; gap:7px; margin-top:7px; }
.notification.unread p { font-weight:750; }
.unread-marker { height:6px; width:6px; background:var(--accent); border-radius:50%; display:inline-block; margin-right:5px; }

/* Calculadora */
.calculator-card { padding:22px; }
.calculator-top { display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:17px; }
.calculator-top h3 { margin:0; }
.minimum-note { display:flex; align-items:center; gap:9px; }
.minimum-note label { margin:0; font-size:12px; color:var(--muted); }
.minimum-note input { width:85px; }
.grade-labels,.grade-row { display:grid; grid-template-columns:minmax(130px,1.8fr) minmax(75px,.75fr) minmax(95px,.85fr) 40px; gap:10px; align-items:center; }
.grade-labels { padding:5px 2px; color:var(--muted); font-weight:750; font-size:11px; }
.grade-row { margin:10px 0; }
.grade-row input { min-width:0; }
.grade-row .remove-btn { color:var(--danger); }
.grade-actions { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin:18px 0; }
.grade-actions span { font-size:12px; color:var(--muted); }
.grade-summary { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; margin-top:19px; }
.grade-stat { background:var(--soft); border-radius:9px; padding:17px; }
.grade-stat span { display:block; color:var(--muted); font-size:11px; margin-bottom:8px; }
.grade-stat strong { display:block; font-weight:800; font-size:23px; letter-spacing:-.04em; }
.grade-result { margin-top:14px; background:var(--soft); border:1px solid var(--border); padding:14px; border-radius:9px; font-size:13px; }
.grade-result strong { display:block; margin-bottom:5px; }
.grade-result p { margin:0; color:var(--muted); }
.grade-error { border-left:3px solid var(--danger); }

/* Moderación */
.moderation-queue { display:grid; gap:13px; }
.moderation-post { padding:18px; }
.moderation-post h3 { font-size:14px; margin:0; }
.moderation-post .muted { font-size:11px; }
.moderation-post p.body { white-space:pre-wrap; overflow-wrap:anywhere; margin:12px 0; }
.flag-list { font-size:12px; color:var(--danger); background:var(--soft); border-left:3px solid var(--danger); padding:9px 11px; margin-bottom:12px; }
.moderation-actions { display:flex; gap:8px; margin-top:15px; }
.moderation-image { max-height:200px; max-width:100%; border-radius:8px; display:block; margin:12px 0; }

/* Chat de escritorio */
.chat-widget { position:fixed; z-index:26; bottom:0; right:25px; width:335px; box-shadow:0 0 22px rgb(0 0 0 / 10%); border-radius:10px 10px 0 0; overflow:hidden; }
.chat-toggle { display:flex; align-items:center; gap:9px; padding:12px 16px; width:100%; height:45px; border:0; text-align:left; font-weight:800; background:var(--accent); color:white; }
.chat-toggle:hover { background:var(--accent-hover); }
.chat-dot { width:8px; height:8px; border-radius:50%; background:#fff; opacity:.9; }
.chat-chevron { margin-left:auto; font-size:18px; transition:transform .2s; }
.chat-widget.open .chat-chevron { transform:rotate(180deg); }
.chat-content { background:var(--surface); border:1px solid var(--border); border-bottom:0; height:345px; display:flex; flex-direction:column; }
.chat-header { display:flex; align-items:center; gap:9px; border-bottom:1px solid var(--border); padding:11px 12px; min-height:53px; }
.chat-header h3 { margin:0; font-size:13px; }
.chat-header small { display:block; color:var(--muted); font-size:10px; }
.chat-list { flex:1; overflow-y:auto; }
.chat-contact { display:flex; align-items:center; gap:10px; border:0; background:transparent; width:100%; padding:13px; color:var(--text); text-align:left; }
.chat-contact:hover { background:var(--soft); }
.chat-contact strong { font-size:12px; display:block; }
.chat-contact small { color:var(--muted); font-size:10px; }
.chat-blank { text-align:center; color:var(--muted); font-size:12px; padding:65px 25px; }
.chat-messages { flex:1; overflow-y:auto; padding:14px 11px; display:flex; flex-direction:column; gap:10px; }
.chat-message { max-width:83%; padding:9px 11px; border-radius:12px 12px 12px 3px; font-size:12px; background:var(--soft); align-self:flex-start; overflow-wrap:anywhere; white-space:pre-wrap; }
.chat-message.mine { background:var(--accent); color:white; border-radius:12px 12px 3px 12px; align-self:flex-end; }
.chat-message time { display:block; opacity:.7; font-size:9px; text-align:right; margin-top:4px; }
.chat-form { display:flex; gap:7px; padding:11px; border-top:1px solid var(--border); }
.chat-form input { flex:1; min-width:0; }
.chat-form .btn { flex:none; }
.chat-counter { margin-left:auto; background:#fff; color:var(--accent); border-radius:99px; padding:1px 6px; font-size:11px; }

/* Ventanas emergentes */
.modal-backdrop { position:fixed; inset:0; display:grid; place-items:center; padding:25px; background:rgb(0 0 0 / 55%); z-index:50; }
.modal { width:min(460px,100%); padding:24px; max-height:calc(100vh - 50px); overflow:auto; }
.modal-head { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:19px; }
.modal-head h2 { font-size:18px; margin:0; }
.modal-profile { display:flex; align-items:center; gap:15px; margin-bottom:20px; }
.modal-profile h3 { margin:0 0 4px; }
.info-grid { border-top:1px solid var(--border); }
.info-grid > div { display:flex; justify-content:space-between; padding:12px 0; gap:18px; border-bottom:1px solid var(--border); }
.info-grid dt { color:var(--muted); }
.info-grid dd { font-weight:750; margin:0; text-align:right; overflow-wrap:anywhere; }
.modal-actions { display:flex; gap:8px; justify-content:end; margin-top:16px; }
.toast { position:fixed; bottom:59px; left:50%; transform:translateX(-50%); background:var(--text); color:var(--surface); border-radius:10px; padding:11px 18px; box-shadow:0 6px 20px rgb(0 0 0 / 18%); max-width:min(460px,calc(100vw - 30px)); text-align:center; z-index:80; font-size:13px; }
.mobile-backdrop { display:none; }

@media (max-width:950px) {
  :root { --sidebar-width:250px; }
  .main-content { padding-left:22px; padding-right:22px; }
  .top-action-text { display:none; }
  .top-action { min-width:38px; padding:8px; }
  .auth-screen { gap:40px; }
}
@media (max-width:720px) {
  .auth-screen { display:flex; flex-direction:column; justify-content:center; align-items:stretch; width:min(440px,calc(100% - 28px)); padding:20px 0; gap:15px; }
  .auth-brand { padding:10px 5px 0; }
  .brand-mark { width:48px; height:48px; font-size:29px; border-radius:13px; margin-bottom:16px; }
  .auth-brand h1 { font-size:39px; margin-bottom:6px; }
  .auth-brand > p:not(.eyebrow) { font-size:13px; }
  .auth-highlights { display:none; }
  .auth-card { padding:22px; }
  .mobile-menu-btn { display:grid; }
  .topbar { padding:0 12px; }
  .topbar-left,.topbar-right { gap:5px; }
  .logo-lockup { gap:7px; font-size:16px; }
  .mini-mark { width:33px; height:33px; font-size:21px; }
  .sidebar { transform:translateX(-102%); background:var(--bg); width:min(285px,84vw); transition:transform .2s; box-shadow:10px 0 30px rgb(0 0 0 / 9%); }
  .sidebar.open { transform:translateX(0); }
  .mobile-backdrop:not([hidden]) { position:fixed; inset:var(--topbar-height) 0 0; display:block; background:rgb(0 0 0 / 34%); z-index:21; }
  .main-content { width:100%; margin-left:0; padding:90px 12px 80px; }
  .page-header h1 { font-size:23px; }
  .post,.composer,.calculator-card { padding:15px; }
  .chat-widget { right:10px; width:min(335px,calc(100vw - 20px)); }
  .chat-content { height:min(390px,calc(100vh - 130px)); }
  .grade-summary { grid-template-columns:1fr; }
  .grade-stat { padding:11px 14px; display:flex; align-items:center; justify-content:space-between; }
  .grade-stat span { margin:0; }
  .grade-stat strong { font-size:19px; }
  .grade-labels,.grade-row { grid-template-columns:minmax(94px,1.6fr) minmax(65px,.8fr) minmax(68px,.8fr) 28px; gap:5px; }
  .grade-row input { padding:8px 6px; font-size:12px; }
  .grade-labels { font-size:10px; }
  .person-row { align-items:flex-start; flex-wrap:wrap; }
  .person-actions { margin-left:48px; }
}

/* Edición de edad dentro del perfil. Respeta el estilo claro y oscuro actual. */
.age-editor { margin-top: 16px; padding-top: 13px; border-top: 1px solid var(--border); }
.age-editor-fields { display: flex; gap: 9px; align-items: center; }
.age-editor-fields input { flex: 1; min-width: 0; }
.age-editor-fields button { white-space: nowrap; }
.age-editor p { margin: 8px 0 0; }