:root {
  --navy:#002f5f;
  --navy-2:#0b426f;
  --cyan:#00a3d9;
  --cyan-strong:#0089b8;
  --bg:#f5f7fa;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --input-bg:#ffffff;
  --text:#17212b;
  --muted:#667085;
  --soft-text:#475467;
  --line:#dfe4ea;
  --success:#178344;
  --success-soft:#eaf7ef;
  --warning:#9a5b00;
  --warning-soft:#fff2d6;
  --danger:#b42318;
  --danger-soft:#fff0ee;
  --accent-soft:#e8f7fc;
  --shadow:0 10px 30px rgba(2,32,71,.08);
  --radius:18px;
  color-scheme:light;
}

html[data-theme="dark"] {
  --bg:#101923;
  --surface:#1a2734;
  --surface-2:#223140;
  --input-bg:#14202b;
  --text:#f5f7fa;
  --muted:#b8c3ce;
  --soft-text:#d3dbe3;
  --line:#3a4b5c;
  --success:#74d99a;
  --success-soft:#153b2a;
  --warning:#ffd078;
  --warning-soft:#493617;
  --danger:#ff9e96;
  --danger-soft:#4c211f;
  --accent-soft:#123d50;
  --shadow:0 12px 34px rgba(0,0,0,.28);
  color-scheme:dark;
}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);min-height:100vh;padding-bottom:calc(96px + env(safe-area-inset-bottom));overflow-x:hidden}
button,input{font:inherit}
button{cursor:pointer;-webkit-tap-highlight-color:transparent}
button:disabled{opacity:.5;cursor:default}
.app-shell{max-width:760px;margin:0 auto;min-height:100vh}

/* La pantalla de carga es un overlay real: nunca debe empujar la app hacia abajo. */
.boot-screen{position:fixed;z-index:120;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;text-align:center;background:linear-gradient(180deg,#002f5f,#064d82);color:#fff;overflow:hidden}
.boot-screen::after{content:"";position:absolute;inset:auto -80px -120px auto;width:320px;height:320px;border-radius:50%;background:rgba(0,163,217,.12)}
.brand-mark{position:relative;z-index:1;width:66px;height:66px;border-radius:20px;display:grid;place-items:center;background:#fff;color:var(--navy);font-weight:900;font-size:22px;box-shadow:0 10px 25px rgba(0,0,0,.18)}
.boot-title{position:relative;z-index:1;font-size:20px;font-weight:800;margin-top:16px}
.boot-subtitle{position:relative;z-index:1;font-size:13px;color:rgba(255,255,255,.82);margin-top:5px;max-width:310px;line-height:1.45}
.spinner{position:relative;z-index:1;width:29px;height:29px;border-radius:50%;border:3px solid rgba(255,255,255,.30);border-top-color:#fff;margin-top:18px;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.topbar{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:calc(12px + env(safe-area-inset-top)) 18px 12px;background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.eyebrow{font-size:10px;letter-spacing:.085em;text-transform:uppercase;color:var(--muted);font-weight:800}
h1{font-size:20px;margin:2px 0 0;color:var(--text);line-height:1.15}
main{padding:14px 14px 44px}

.hero-card{display:flex;justify-content:space-between;gap:16px;background:linear-gradient(135deg,#004985,#0076ad);color:#fff;border-radius:22px;padding:20px;box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;position:relative}
.hero-card:after{content:"";position:absolute;width:170px;height:170px;border-radius:50%;background:rgba(54,203,255,.18);right:-70px;top:-90px}
.hero-kicker{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.86)}
.hero-title{font-size:21px;font-weight:800;margin-top:4px;line-height:1.18}
.hero-copy{margin:7px 0 0;font-size:13px;line-height:1.45;color:rgba(255,255,255,.88);max-width:390px}
.hero-stat{position:relative;z-index:1;min-width:82px;display:flex;flex-direction:column;justify-content:center;align-items:flex-end;text-align:right}
.hero-stat strong{font-size:28px;line-height:1;color:#fff}.hero-stat span{font-size:11px;color:rgba(255,255,255,.82);margin-top:5px}

.search-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px;box-shadow:0 5px 18px rgba(2,32,71,.04)}
.search-field{display:flex;align-items:center;gap:9px;border:1px solid var(--line);background:var(--input-bg);border-radius:14px;padding:0 11px;min-height:48px;transition:.15s ease;color:var(--text)}
.search-field:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,163,217,.18)}
.search-icon{font-size:22px;color:var(--muted);transform:rotate(-12deg)}
.search-field input{border:0;outline:0;background:transparent;color:var(--text);width:100%;min-width:0;font-size:15px}
.search-field input::placeholder{color:var(--muted);opacity:.82}
.field-clear{border:0;background:var(--surface-2);color:var(--text);width:29px;height:29px;border-radius:50%;font-size:18px;line-height:1}

.filter-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.filter-control{text-align:left;min-width:0;border:1px solid var(--line);background:var(--input-bg);border-radius:13px;padding:10px 11px;display:flex;flex-direction:column;gap:3px;color:var(--text)}
.filter-control:active{transform:scale(.985)}
.filter-label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:800}
.filter-value{font-size:13px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.filter-actions{display:flex;justify-content:space-between;align-items:center;margin-top:10px;gap:12px}
.text-button{border:0;background:transparent;padding:7px 5px;color:var(--cyan);font-weight:800;font-size:12px}
.result-count{font-size:12px;color:var(--muted);font-weight:800}

.results-list{display:grid;gap:10px;margin-top:12px}
.descriptor-card{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:14px;box-shadow:0 4px 14px rgba(2,32,71,.035)}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px}
.validity-badge{font-size:10px;font-weight:900;padding:4px 8px;border-radius:999px;background:var(--success-soft);color:var(--success)}
.validity-badge.expired{background:var(--warning-soft);color:var(--warning)}
.validity-badge.other{background:var(--surface-2);color:var(--muted)}
.descriptor-code{font-size:11px;color:var(--muted);font-weight:800;text-align:right}
.descriptor-title{font-size:16px;line-height:1.28;margin:0;color:var(--text)}
.descriptor-meta{font-size:11px;color:var(--muted);margin-top:6px;font-weight:600}
.descriptor-structure{font-size:12px;line-height:1.45;color:var(--soft-text);margin-top:8px;padding-top:8px;border-top:1px solid var(--line)}
.card-actions{display:grid;grid-template-columns:88px 1fr;gap:8px;margin-top:12px}
.secondary-button,.select-button,.primary-button,.load-more{border-radius:12px;min-height:42px;font-weight:800;border:1px solid var(--line);background:var(--input-bg);color:var(--text)}
.secondary-button{color:var(--text)}
.select-button{background:var(--navy);border-color:var(--navy);color:#fff}
.select-button.selected{background:var(--success);border-color:var(--success);color:#082312}
html[data-theme="dark"] .select-button.selected{color:#082312}
.primary-button{background:#004987;border-color:#004987;color:#fff}
.primary-button.large{min-height:50px;font-size:15px;width:100%}
.load-more{display:block;width:100%;margin:12px 0;background:var(--surface);color:var(--text)}
.empty-state{padding:38px 20px;text-align:center;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:7px}
.empty-icon{font-size:38px;color:var(--muted);transform:rotate(-12deg)}
.empty-state strong{color:var(--text)}
.empty-state span{font-size:13px;color:var(--muted)}
.icon-button{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);font-weight:900;font-size:20px;display:grid;place-items:center}

.selection-bar{position:fixed;z-index:25;left:50%;transform:translateX(-50%);bottom:calc(12px + env(safe-area-inset-bottom));width:min(730px,calc(100% - 24px));border:1px solid rgba(255,255,255,.08);border-radius:16px;background:#00437e;color:#fff;box-shadow:0 12px 30px rgba(0,47,95,.34);min-height:58px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;font-size:13px}
.selection-bar span:last-child{font-weight:700}

.sheet-backdrop{position:fixed;z-index:40;inset:0;background:rgba(6,13,22,.64);backdrop-filter:blur(3px)}
.bottom-sheet{position:fixed;z-index:50;left:50%;transform:translateX(-50%);bottom:0;width:min(760px,100%);max-height:min(78dvh,720px);background:var(--surface);border:1px solid var(--line);border-bottom:0;border-radius:22px 22px 0 0;padding:7px 14px calc(18px + env(safe-area-inset-bottom));box-shadow:0 -18px 45px rgba(0,0,0,.28);overflow:auto;color:var(--text);overscroll-behavior:contain}
.bottom-sheet.tall{max-height:min(88dvh,820px)}
.sheet-grabber{width:42px;height:4px;border-radius:99px;background:var(--muted);opacity:.7;margin:3px auto 12px}
.sheet-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}
.sheet-kicker{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--cyan);font-weight:900}
.sheet-header h2{font-size:20px;margin:2px 0 0;color:var(--text)}
.sheet-close{color:var(--text)}
.compact{min-height:44px;margin-bottom:10px}
.option-list{display:grid;gap:6px}
.option-button{width:100%;text-align:left;border:1px solid var(--line);background:var(--surface-2);color:var(--text);border-radius:12px;padding:11px 12px;font-size:13px;line-height:1.3}
.option-button.active{border-color:var(--cyan);background:var(--accent-soft);color:var(--text);font-weight:900}
.selected-list{display:grid;gap:8px}
.selected-row{display:grid;grid-template-columns:1fr 36px;gap:10px;align-items:center;padding:11px;border:1px solid var(--line);border-radius:13px;background:var(--surface-2);color:var(--text)}
.selected-row strong{font-size:13px;line-height:1.3;display:block;color:var(--text)}
.selected-row span{font-size:11px;color:var(--muted);display:block;margin-top:3px}
.remove-button{width:34px;height:34px;border-radius:10px;border:0;background:var(--danger-soft);color:var(--danger);font-size:17px;font-weight:900}
.selection-footer{position:sticky;bottom:0;background:var(--surface);display:grid;grid-template-columns:1fr 1.25fr;gap:8px;padding-top:14px;margin-top:10px}

.send-form{display:grid;gap:14px;color:var(--text)}
.send-form fieldset{margin:0;padding:0;border:0}
.send-form legend,.form-field>span{font-size:12px;color:var(--muted);font-weight:900;margin-bottom:7px;display:block}
.segmented{display:grid;grid-template-columns:1fr 1fr;background:var(--surface-2);padding:4px;border-radius:13px;border:1px solid var(--line)}
.segmented label{position:relative}.segmented input{position:absolute;opacity:0}
.segmented span{display:grid;place-items:center;min-height:40px;border-radius:10px;font-weight:800;font-size:13px;color:var(--muted)}
.segmented input:checked+span{background:var(--input-bg);color:var(--text);box-shadow:0 2px 8px rgba(0,0,0,.14);border:1px solid var(--line)}
.form-field input{width:100%;min-height:50px;border:1px solid var(--line);border-radius:12px;background:var(--input-bg);color:var(--text);padding:0 12px;outline:0}
.form-field input::placeholder{color:var(--muted);opacity:.78}
.form-field input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,163,217,.18)}
.send-summary{background:var(--accent-soft);border-left:4px solid var(--cyan);border-radius:0 12px 12px 0;padding:13px 14px;display:flex;flex-direction:column;gap:4px;color:var(--text)}
.send-summary span,.send-summary small{font-size:11px;color:var(--soft-text);line-height:1.4}
.send-summary strong{color:var(--text);font-size:14px}

.toast{position:fixed;z-index:80;left:50%;transform:translateX(-50%);bottom:calc(82px + env(safe-area-inset-bottom));width:min(640px,calc(100% - 28px));padding:13px 15px;border-radius:13px;background:#17212b;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25);font-size:13px;font-weight:800;text-align:center}
.toast.error{background:#8f1d16}

@media(min-width:680px){main{padding:18px}.results-list{grid-template-columns:1fr 1fr}.hero-card{padding:24px}.filter-grid{grid-template-columns:repeat(4,1fr)}.filter-control{min-height:60px}}
@media(max-width:390px){.hero-card{padding:17px}.hero-title{font-size:19px}.hero-copy{font-size:12px}.hero-stat strong{font-size:24px}.selection-bar{font-size:12px}.filter-grid{gap:7px}}

/* Destinatarios · Directorio institucional */
.recipient-mode{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:4px;border:1px solid var(--line);background:var(--surface-2);border-radius:14px}
.recipient-mode-button{min-height:42px;border:0;border-radius:10px;background:transparent;color:var(--muted);font-size:12px;font-weight:900;padding:0 10px}
.recipient-mode-button.active{background:var(--input-bg);color:var(--text);box-shadow:0 2px 8px rgba(0,0,0,.10);border:1px solid var(--line)}
.recipient-panel{display:grid;gap:10px}
.recipient-help{font-size:12px;line-height:1.45;color:var(--soft-text);padding:2px 2px 0}
.recipient-help strong{color:var(--text)}
.contact-search-field{margin:0}

.contact-search-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:stretch}
.contact-search-button{min-height:44px;padding:0 16px;white-space:nowrap;border-radius:12px}
@media(max-width:390px){.contact-search-row{grid-template-columns:1fr}.contact-search-button{width:100%;min-height:42px}}
.contact-search-status{font-size:11px;color:var(--muted);font-weight:700;padding:0 2px;line-height:1.4}
.contact-results{display:grid;gap:8px;max-height:330px;overflow:auto;overscroll-behavior:contain}
.contact-card{width:100%;text-align:left;border:1px solid var(--line);background:var(--surface-2);color:var(--text);border-radius:14px;padding:12px;display:grid;gap:3px;transition:.14s ease}
.contact-card:active{transform:scale(.988);border-color:var(--cyan)}
.contact-card strong{font-size:13px;line-height:1.3;color:var(--text)}
.contact-card span{display:block}
.contact-cargo{font-size:12px;color:var(--soft-text);font-weight:700}
.contact-structure{font-size:11px;color:var(--muted);line-height:1.35}
.contact-card code{font-family:inherit;font-size:11px;color:var(--cyan);background:transparent;padding:2px 0 0;word-break:break-all}
.contact-empty{border:1px dashed var(--line);background:var(--surface-2);border-radius:13px;padding:16px;text-align:center;display:flex;flex-direction:column;gap:5px;color:var(--muted);font-size:12px}
.contact-empty strong{color:var(--text);font-size:13px}
.contact-empty.error{border-color:color-mix(in srgb,var(--danger) 40%,var(--line));color:var(--danger)}
.selected-contact-card{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;border:1px solid var(--cyan);background:var(--accent-soft);border-radius:14px;padding:12px;color:var(--text)}
.selected-contact-card>div{min-width:0;display:flex;flex-direction:column;gap:3px}
.selected-contact-kicker{font-size:9px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;color:var(--cyan)}
.selected-contact-card strong{font-size:14px;line-height:1.25;color:var(--text)}
.selected-contact-card span{font-size:11px;color:var(--soft-text);line-height:1.35}
.selected-contact-card code{font-family:inherit;font-size:11px;color:var(--text);background:transparent;padding:2px 0 0;word-break:break-all}
.compact-button{min-height:36px;padding:0 11px;font-size:11px;white-space:nowrap}
.manual-fallback{border:0;background:transparent;color:var(--cyan);font-weight:900;font-size:12px;text-align:center;padding:8px 6px}

@media(max-width:390px){.recipient-mode-button{font-size:11px;padding:0 7px}.selected-contact-card{grid-template-columns:1fr}.compact-button{width:100%}}

/* v0.4.0 · destinatarios múltiples y CC */
.recipient-lists{display:grid;gap:10px}
.recipient-bucket{border:1px solid var(--line);background:var(--surface-2);border-radius:15px;padding:12px;display:grid;gap:10px}
.recipient-bucket-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.recipient-bucket-head>div{display:flex;flex-direction:column;gap:2px;min-width:0}
.recipient-bucket-head strong{font-size:13px;color:var(--text)}
.recipient-bucket-kicker{font-size:9px;text-transform:uppercase;letter-spacing:.1em;font-weight:900;color:var(--cyan)}
.recipient-chip-list{display:grid;gap:7px}
.recipient-chip{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;background:var(--input-bg);border:1px solid var(--line);border-radius:11px;padding:9px 10px}
.recipient-chip>div{min-width:0;display:flex;flex-direction:column;gap:2px}
.recipient-chip strong{font-size:12px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.recipient-chip span{font-size:10px;color:var(--soft-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.recipient-empty{font-size:11px;color:var(--muted);padding:3px 1px}
.active-target{border-color:var(--cyan)!important;color:var(--text)!important;box-shadow:0 0 0 1px rgba(0,163,217,.35)}
.recipient-target-notice{font-size:11px;color:var(--soft-text);background:var(--accent-soft);border-left:3px solid var(--cyan);padding:9px 11px;border-radius:0 10px 10px 0}
.recipient-target-notice strong{color:var(--text)}
.auto-salutation{display:flex;flex-direction:column;gap:4px;padding:12px 14px;border-radius:12px;background:var(--accent-soft);border:1px solid rgba(0,163,217,.45);color:var(--text)}
.auto-salutation span,.auto-salutation small{font-size:10px;color:var(--soft-text)}
.auto-salutation strong{font-size:15px;color:var(--text)}
.contact-card.already-added{opacity:.66;cursor:default}
.contact-add-status{margin-top:5px;font-size:10px!important;font-weight:900!important;color:var(--cyan)!important}
@media(max-width:420px){.recipient-bucket-head{align-items:flex-start;flex-direction:column}.recipient-bucket-head .compact-button{width:100%}}