/* ═══════════════════════════════════════════════════════════════
   Estante Virtual v2 — Design System "Atelier de Engenharia"
   ═══════════════════════════════════════════════════════════════ */
:root {
  --void:#07090d;--ground:#0d1017;--surface:#111620;--raised:#16202e;
  --card:#1a2232;--border:#1f2d40;--border2:#263347;
  --txt:#e6e2d6;--txt2:#9ca8bc;--txt3:#5c6880;
  --amber:#f0a82e;--amber2:#f5bc58;--amber-bg:#f0a82e14;
  --teal:#2ec9b4;--teal-bg:#2ec9b414;
  --violet:#9a72e8;--violet-bg:#9a72e814;
  --danger:#e05c5c;
  --r:12px;--r2:18px;
  --shadow:0 20px 60px -20px rgba(0,0,0,.75);
  --shadow-sm:0 6px 20px -8px rgba(0,0,0,.5);
  --sidebar-w:240px;--panel-w:360px;
  --rdr-nav-h:56px;--rdr-bar-h:54px;
  --header-h:56px; /* Mobile header height */
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html,body{height:100%}
body{
  background:var(--void);
  color:var(--txt);
  font-family:'Inter',system-ui,sans-serif;
  font-size:14px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent; /* Remove tap highlight on mobile */
  touch-action:manipulation; /* Faster tap response */
}
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--txt3)}
::selection{background:var(--amber-bg);color:var(--amber2)}

/* Prevent horizontal scroll on mobile */
html { overflow-x: hidden; }
body { overflow-x: hidden; }

/* Better text rendering on mobile */
@media (max-width: 720px) {
  body {
    font-size: 15px; /* Slightly larger base font for mobile */
    line-height: 1.6;
  }
  ::-webkit-scrollbar { display: none; } /* Hide scrollbar on mobile */
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:6px;font-family:'Space Grotesk',sans-serif;
  font-weight:600;font-size:13px;border:1px solid var(--border2);background:var(--card);
  color:var(--txt);padding:9px 16px;border-radius:var(--r);cursor:pointer;transition:.16s;
  white-space:nowrap;line-height:1;user-select:none}
.btn:hover{border-color:var(--amber);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.btn.ghost{background:transparent}
.btn.ghost:hover{background:var(--amber-bg)}
.btn-logout{font-size:12px;font-family:'JetBrains Mono',monospace;background:none;border:none;
  color:var(--txt3);cursor:pointer;padding:8px 12px;border-radius:8px;transition:.15s;
  width:100%;text-align:left}
.btn-logout:hover{color:var(--danger);background:rgba(224,92,92,.08)}
.chip{font-family:'JetBrains Mono',monospace;font-size:11.5px;padding:6px 11px;border-radius:20px;
  border:1px solid var(--border2);background:transparent;color:var(--txt2);cursor:pointer;
  transition:.15s;white-space:nowrap}
.chip:hover{border-color:var(--amber);color:var(--amber)}
.chip.danger:hover{border-color:var(--danger);color:var(--danger)}
.rtool{background:none;border:none;color:var(--txt2);cursor:pointer;font-size:16px;
  padding:7px 9px;border-radius:8px;transition:.15s;line-height:1}
.rtool:hover{color:var(--txt);background:var(--raised)}
.rtool.on{color:var(--amber);background:var(--amber-bg)}

/* LAYOUT */
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--ground);border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:20}
.content{margin-left:var(--sidebar-w);height:100vh;overflow-y:auto;padding:32px 32px 60px}
.sb-brand{display:flex;align-items:center;gap:12px;padding:22px 18px 20px;
  border-bottom:1px solid var(--border)}
.mark{width:32px;height:40px;flex-shrink:0;border-radius:3px 6px 6px 3px;
  background:linear-gradient(180deg,var(--amber),#b87c18);
  box-shadow:inset -5px 0 0 rgba(0,0,0,.25),0 4px 14px rgba(240,168,46,.25);position:relative}
.mark::after{content:"";position:absolute;left:5px;top:6px;width:3px;bottom:6px;
  background:rgba(0,0,0,.25);border-radius:2px}
.sb-brand h1{font-family:'Space Grotesk',sans-serif;font-size:18px;font-weight:700;letter-spacing:-.4px}
.sb-brand p{font-size:10px;color:var(--txt3);letter-spacing:.12em;text-transform:uppercase;
  font-family:'JetBrains Mono',monospace;margin-top:2px}
.sb-nav{flex:1;padding:14px 10px;display:flex;flex-direction:column;gap:3px}
.nav-item{display:flex;align-items:center;gap:11px;font-family:'Space Grotesk',sans-serif;
  font-size:14px;font-weight:500;padding:11px 12px;border-radius:10px;border:none;
  background:none;color:var(--txt2);cursor:pointer;transition:.15s;width:100%;text-align:left}
.nav-item .ni-icon{font-size:17px;width:20px;text-align:center}
.nav-item:hover{background:var(--surface);color:var(--txt)}
.nav-item.active{background:var(--amber-bg);color:var(--amber);font-weight:600}
.sb-footer{padding:14px 14px 18px;border-top:1px solid var(--border);
  display:flex;flex-direction:column;gap:10px}
.ai-badge{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;
  background:var(--surface)}
.ai-dot{width:8px;height:8px;border-radius:50%;background:var(--txt3);flex-shrink:0}
.ai-dot.on{background:var(--teal);box-shadow:0 0 10px var(--teal)}
#aiLabel{font-size:11.5px;color:var(--txt2);font-family:'JetBrains Mono',monospace}

/* SECTION HEADER */
.section-head{display:flex;align-items:center;justify-content:space-between;
  margin-bottom:24px;flex-wrap:wrap;gap:12px}
.section-head h2{font-family:'Space Grotesk',sans-serif;font-size:22px;font-weight:700;letter-spacing:-.4px}
.sub-head{font-family:'Space Grotesk',sans-serif;font-size:13px;font-weight:600;
  color:var(--txt3);text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}

/* DASHBOARD */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:14px;margin-bottom:32px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);
  padding:20px 22px;position:relative;overflow:hidden;transition:.2s}
.stat-card:hover{border-color:var(--border2);transform:translateY(-2px)}
.stat-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--cat-color,var(--amber))}
.stat-val{font-family:'Space Grotesk',sans-serif;font-size:32px;font-weight:700;letter-spacing:-.5px}
.stat-label{font-size:11px;color:var(--txt2);margin-top:4px;text-transform:uppercase;
  letter-spacing:.08em;font-family:'JetBrains Mono',monospace}
.stat-icon{position:absolute;right:16px;top:16px;font-size:22px;opacity:.45}
.dash-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.recent-list{display:flex;flex-direction:column;gap:10px}
.recent-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:13px 16px;cursor:pointer;transition:.15s;display:flex;align-items:center;gap:12px}
.recent-item:hover{border-color:var(--amber);transform:translateX(3px)}
.ri-spine{width:5px;height:36px;border-radius:3px;flex-shrink:0;background:var(--cat-color,var(--amber))}
.ri-body{flex:1;min-width:0}
.ri-title{font-weight:600;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ri-meta{font-size:11px;color:var(--txt2);font-family:'JetBrains Mono',monospace;margin-top:2px}
.ri-pct{font-size:11px;color:var(--txt3);font-family:'JetBrains Mono',monospace;white-space:nowrap}
.rec-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);
  padding:18px 20px;min-height:160px;font-size:13.5px;line-height:1.65}
.rec-placeholder{color:var(--txt3);font-style:italic}
.rec-card h2,.rec-card h3{font-family:'Space Grotesk',sans-serif;color:var(--amber);
  margin:10px 0 5px;font-size:14px}
.rec-card code{background:var(--card);padding:1px 5px;border-radius:4px;
  font-family:'JetBrains Mono',monospace;font-size:12px}
.rec-card strong{color:var(--txt)}

/* SHELF */
.filter-row{display:flex;gap:7px;flex-wrap:wrap}
.filter-chip{font-family:'JetBrains Mono',monospace;font-size:11.5px;padding:7px 13px;
  border-radius:20px;border:1px solid var(--border2);background:transparent;
  color:var(--txt2);cursor:pointer;transition:.15s}
.filter-chip:hover{color:var(--txt)}
.filter-chip.active{font-weight:600}
.filter-chip[data-f="Todos"].active{background:var(--amber-bg);border-color:var(--amber);color:var(--amber)}
.filter-chip[data-f="Favoritos"].active{background:rgba(255,200,50,.1);border-color:gold;color:gold}
.filter-chip[data-f="Programação Python"].active{background:var(--amber-bg);border-color:var(--amber);color:var(--amber)}
.filter-chip[data-f="Automação em TI"].active{background:var(--violet-bg);border-color:var(--violet);color:var(--violet)}
.filter-chip[data-f="Inteligência Artificial"].active{background:var(--teal-bg);border-color:var(--teal);color:var(--teal)}
.shelf-actions{display:flex;gap:8px}
.shelf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(188px,1fr));gap:18px;margin-top:4px}
.shelf-empty{text-align:center;padding:80px 20px;max-width:480px;margin:0 auto;color:var(--txt2)}
.shelf-empty .empty-icon{font-size:56px;margin-bottom:18px;opacity:.7}
.shelf-empty h3{font-family:'Space Grotesk',sans-serif;font-size:20px;color:var(--txt);margin-bottom:10px}
.shelf-empty code{background:var(--card);padding:2px 7px;border-radius:5px;
  color:var(--amber);font-family:'JetBrains Mono',monospace}

/* Mobile shelf optimizations */
@media (max-width: 720px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .filter-row {
    gap: 6px;
  }
  .filter-chip {
    font-size: 13px;
    padding: 10px 16px;
    border-radius: 12px;
  }
  .shelf-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .shelf-actions {
    width: 100%;
    justify-content: space-between;
  }
  .btn {
    flex: 1;
    justify-content: center;
  }
  .shelf-empty {
    padding: 40px 16px;
  }
  .shelf-empty h3 {
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .shelf-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* BOOK CARD */
.book-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r2);
  overflow:hidden;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,border-color .22s;
  position:relative;display:flex;flex-direction:column;transform-style:preserve-3d}
.book-card:hover{
  transform:perspective(900px) rotateY(-4deg) rotateX(2deg) translateY(-6px);
  border-color:var(--cat-color);
  box-shadow:10px 18px 40px rgba(0,0,0,.55),0 0 0 1px var(--cat-color),
    0 0 50px color-mix(in srgb,var(--cat-color) 12%,transparent)}
.card-cover{height:110px;position:relative;
  background:linear-gradient(135deg,color-mix(in srgb,var(--cat-color) 8%,var(--card)),var(--card));
  border-bottom:1px solid var(--border)}
.card-spine{position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--cat-color)}
.card-spine::after{content:"";position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(255,255,255,.2),transparent 40%)}
.cover-cat{position:absolute;bottom:10px;left:14px;
  font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:500;
  text-transform:uppercase;letter-spacing:.1em;
  color:color-mix(in srgb,var(--cat-color) 80%,#fff)}
.cover-fav{position:absolute;top:8px;right:8px;background:rgba(0,0,0,.35);border:none;
  border-radius:50%;width:28px;height:28px;cursor:pointer;font-size:14px;
  display:flex;align-items:center;justify-content:center;transition:.15s;color:var(--txt2)}
.cover-fav:hover{color:gold;background:rgba(0,0,0,.6)}
.cover-fav.on{color:gold;background:rgba(255,200,0,.15)}
.card-body{padding:13px 14px 14px;flex:1;display:flex;flex-direction:column;gap:8px}
.card-title{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14px;
  line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;min-height:36px;color:var(--txt)}
.card-topics{display:flex;flex-wrap:wrap;gap:4px}
.topic-pill{font-family:'JetBrains Mono',monospace;font-size:10px;background:var(--surface);
  border:1px solid var(--border);color:var(--txt3);padding:2px 7px;border-radius:20px}
.card-prog{height:3px;background:var(--surface);border-radius:2px;overflow:hidden}
.card-prog-fill{height:100%;background:var(--cat-color);border-radius:2px;transition:width .4s ease}
.card-meta{display:flex;align-items:center;justify-content:space-between;
  font-size:10.5px;color:var(--txt2);font-family:'JetBrains Mono',monospace}
.card-menu{background:none;border:none;color:var(--txt3);cursor:pointer;
  font-size:18px;padding:0 4px;border-radius:4px;line-height:1;font-weight:600}
.card-menu:hover{color:var(--txt)}

/* Mobile book card optimizations */
@media (max-width: 720px) {
  .book-card {
    border-radius: 14px;
  }
  .book-card:active {
    transform: scale(0.98);
    border-color: var(--cat-color);
  }
  .card-cover {
    height: 140px;
  }
  .cover-cat {
    font-size: 11px;
    bottom: 12px;
    left: 16px;
  }
  .cover-fav {
    width: 36px;
    height: 36px;
    font-size: 16px;
    top: 10px;
    right: 10px;
  }
  .card-body {
    padding: 16px;
    gap: 10px;
  }
  .card-title {
    font-size: 15px;
    min-height: 42px;
  }
  .topic-pill {
    font-size: 11px;
    padding: 4px 10px;
  }
  .card-prog {
    height: 4px;
  }
  .card-meta {
    font-size: 12px;
  }
}

/* CONTEXT MENU */
.ctx-menu{position:fixed;background:var(--raised);border:1px solid var(--border2);
  border-radius:10px;padding:6px;box-shadow:var(--shadow);z-index:100;
  display:flex;flex-direction:column;gap:1px;min-width:180px}
.ctx-menu button{background:none;border:none;color:var(--txt);font-size:13px;
  text-align:left;padding:9px 12px;border-radius:7px;cursor:pointer;transition:.12s}
.ctx-menu button:hover{background:var(--surface)}
.ctx-menu button.danger:hover{color:var(--danger);background:rgba(224,92,92,.1)}

/* SEARCH */
.search-hero{padding:20px 0 28px}
.search-wrap{position:relative;max-width:680px;background:var(--surface);
  border:1px solid var(--border2);border-radius:14px;display:flex;
  align-items:center;transition:.2s;overflow:hidden}
.search-wrap:focus-within{border-color:var(--amber);box-shadow:0 0 0 3px var(--amber-bg)}
.search-icon{font-size:20px;color:var(--txt3);padding:0 14px 0 18px}
.search-input{flex:1;background:none;border:none;color:var(--txt);
  font-size:17px;font-family:inherit;padding:16px 0;outline:none}
.search-esc{background:var(--card);border:1px solid var(--border);border-radius:6px;
  padding:4px 8px;margin-right:12px;cursor:pointer;font-size:12px;
  color:var(--txt2);font-family:'JetBrains Mono',monospace}
.search-results{display:flex;flex-direction:column;gap:8px;max-width:720px}
.sr-group{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);overflow:hidden}
.sr-book-head{display:flex;align-items:center;gap:10px;padding:12px 16px;
  border-bottom:1px solid var(--border);font-family:'Space Grotesk',sans-serif;
  font-weight:600;font-size:13.5px}
.sr-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.sr-item{display:flex;align-items:flex-start;gap:12px;padding:11px 16px;
  cursor:pointer;transition:.12s;border-bottom:1px solid var(--border)}
.sr-item:last-child{border-bottom:none}
.sr-item:hover{background:var(--raised)}
.sr-pg{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--txt3);min-width:50px;padding-top:1px}
.sr-snip{font-size:13px;line-height:1.55;color:var(--txt2)}
.sr-snip mark{background:var(--amber-bg);color:var(--amber2);border-radius:3px;padding:0 2px}
.search-placeholder{color:var(--txt3);text-align:center;padding:48px 20px;font-size:15px}

/* READER */
.reader{position:fixed;inset:0;z-index:40;background:var(--ground);display:flex;flex-direction:column}
.rdr-bar{height:var(--rdr-bar-h);display:flex;align-items:center;gap:10px;
  padding:0 16px;border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0}
.rdr-title{flex:1;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 10px}
.rdr-tools{display:flex;align-items:center;gap:4px}
.rdr-body{flex:1;overflow:auto;display:flex;justify-content:center;
  align-items:flex-start;padding:28px 16px}
.canvas-wrap{position:relative;align-self:flex-start}
#pdfCanvas{display:block;border-radius:4px;box-shadow:0 24px 80px -30px rgba(0,0,0,.85);
  background:#efe7d6;transition:filter .3s}
#pdfCanvas.night{filter:invert(1) hue-rotate(180deg) brightness(.9)}
.textlayer{position:absolute;inset:0;overflow:hidden;opacity:.0001;pointer-events:auto}
.textlayer ::selection{background:rgba(240,168,46,.35);color:#000}
.rdr-nav{height:var(--rdr-nav-h);display:flex;align-items:center;gap:12px;
  padding:0 18px;border-top:1px solid var(--border);background:var(--surface);flex-shrink:0}
.rdr-pg-btn{width:38px;height:38px;border-radius:9px;border:1px solid var(--border2);
  background:var(--card);color:var(--txt);font-size:22px;cursor:pointer;transition:.15s;
  display:flex;align-items:center;justify-content:center;line-height:1}
.rdr-pg-btn:hover{border-color:var(--amber);background:var(--amber-bg)}
.pg-info{display:flex;align-items:center;gap:6px;
  font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--txt2)}
.pg-info input{width:52px;background:var(--card);border:1px solid var(--border2);
  color:var(--txt);border-radius:8px;padding:7px;text-align:center;font-family:inherit;font-size:13px}
.pg-info input:focus{outline:none;border-color:var(--amber)}
.rdr-progress{flex:1;height:4px;background:var(--card);border-radius:2px;overflow:hidden}
#progressFill{height:100%;width:0;background:linear-gradient(90deg,var(--amber),#c9821c);transition:width .3s}

/* Mobile reader optimizations */
@media (max-width: 720px) {
  .rdr-bar {
    height: var(--header-h);
    padding: 0 12px;
    gap: 8px;
  }
  .rdr-title {
    font-size: 15px;
  }
  .rdr-tools {
    gap: 2px;
  }
  .rtool {
    width: 44px;
    height: 44px;
    font-size: 20px;
    padding: 0;
  }
  .rdr-body {
    padding: 16px 8px;
    align-items: center;
  }
  .canvas-wrap {
    width: 100%;
  }
  #pdfCanvas {
    width: 100%;
    height: auto;
    max-width: 100%;
    border-radius: 8px;
  }
  .rdr-nav {
    height: auto;
    padding: 12px 16px;
    gap: 8px;
    flex-wrap: wrap;
    border-radius: 16px 16px 0 0;
    background: var(--surface);
    box-shadow: 0 -4px 20px rgba(0,0,0,.3);
  }
  .rdr-pg-btn {
    width: 48px;
    height: 48px;
    font-size: 24px;
    border-radius: 12px;
  }
  .pg-info {
    flex: 1;
    justify-content: center;
    font-size: 15px;
  }
  .pg-info input {
    width: 70px;
    font-size: 16px;
    padding: 10px;
    border-radius: 10px;
    text-align: center;
  }
  .rdr-progress {
    height: 6px;
    margin-top: 8px;
  }
  /* Fullscreen canvas on mobile */
  .rdr-body {
    align-items: center;
    padding: 8px;
  }
  .canvas-wrap {
    width: 100%;
    display: flex;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .rdr-bar {
    padding: 0 8px;
  }
  .rdr-title {
    font-size: 14px;
  }
  .rtool {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}

/* READER PANEL */
.rdr-panel{position:fixed;right:0;top:var(--rdr-bar-h);bottom:var(--rdr-nav-h);
  width:var(--panel-w);background:var(--surface);border-left:1px solid var(--border);
  display:flex;flex-direction:column;z-index:41;transition:transform .25s ease}
.rdr-panel.hidden{transform:translateX(100%)}
.panel-tabs{display:flex;border-bottom:1px solid var(--border);flex-shrink:0}
.ptab{flex:1;background:none;border:none;color:var(--txt2);font-size:13px;
  font-family:'Space Grotesk',sans-serif;font-weight:600;padding:14px;
  cursor:pointer;transition:.15s;border-bottom:2px solid transparent;position:relative;bottom:-1px}
.ptab:hover{color:var(--txt)}
.ptab.active{color:var(--amber);border-bottom-color:var(--amber)}
.panel-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:12px}

/* Mobile reader panel optimizations */
@media (max-width: 720px) {
  .rdr-panel {
    right: 0;
    left: 0;
    top: auto;
    bottom: 0;
    width: 100%;
    height: 60vh;
    max-height: 70vh;
    border-left: none;
    border-top: 1px solid var(--border);
    border-radius: 20px 20px 0 0;
    box-shadow: 0 -4px 30px rgba(0,0,0,.4);
    transform: translateY(100%);
    transition: transform .3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }
  .rdr-panel.hidden {
    transform: translateY(100%);
  }
  .rdr-panel:not(.hidden) {
    transform: translateY(0);
  }
  .panel-tabs {
    background: var(--surface);
    border-radius: 16px 16px 0 0;
  }
  .ptab {
    font-size: 14px;
    padding: 16px;
    font-weight: 600;
  }
  .panel-body {
    padding: 16px;
    max-height: calc(60vh - 80px);
  }
}

@media (max-width: 480px) {
  .rdr-panel {
    height: 65vh;
    max-height: 75vh;
  }
  .panel-body {
    padding: 12px;
  }
}

/* NOTES */
.notes-list{display:flex;flex-direction:column;gap:9px}
.note-item{background:var(--card);border:1px solid var(--border);
  border-radius:10px;padding:10px 12px}
.note-item.highlight{border-left:3px solid var(--amber)}
.note-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:5px}
.note-tag{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--txt3)}
.note-del{background:none;border:none;color:var(--txt3);cursor:pointer;font-size:13px;transition:.12s}
.note-del:hover{color:var(--danger)}
.note-txt{font-size:13px;line-height:1.55;color:var(--txt2)}
.notes-actions{margin-top:4px;display:flex;gap:8px}
.note-empty{color:var(--txt3);font-size:13px;text-align:center;padding:20px}

/* Mobile notes optimizations */
@media (max-width: 720px) {
  .note-item {
    padding: 14px 16px;
    border-radius: 12px;
  }
  .note-tag {
    font-size: 11px;
  }
  .note-txt {
    font-size: 14px;
    line-height: 1.6;
  }
  .note-del {
    font-size: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .notes-actions {
    margin-top: 8px;
  }
  .chip {
    flex: 1;
    justify-content: center;
    font-size: 13px;
    padding: 12px;
  }
  .note-empty {
    font-size: 14px;
    padding: 30px 16px;
  }
}

/* CHAT */
.chat-quick{display:flex;flex-wrap:wrap;gap:6px}
.chat-messages{flex:1;display:flex;flex-direction:column;gap:10px;overflow-y:auto;padding-right:4px;min-height:80px}
.chat-msg{max-width:90%;border-radius:14px;padding:11px 13px;font-size:13px;line-height:1.6}
.chat-msg.user{background:var(--amber-bg);border:1px solid color-mix(in srgb,var(--amber) 30%,transparent);align-self:flex-end;color:var(--txt)}
.chat-msg.ai{background:var(--card);border:1px solid var(--border2);align-self:flex-start;color:var(--txt)}
.chat-msg.ai h2,.chat-msg.ai h3{font-family:'Space Grotesk',sans-serif;font-size:13.5px;color:var(--amber);margin:8px 0 4px}
.chat-msg.ai code{background:var(--void);padding:1px 5px;border-radius:4px;font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--teal)}
.chat-msg.ai pre{background:var(--void);border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin:8px 0;overflow-x:auto}
.chat-msg.ai pre code{background:none;padding:0}
.chat-msg.ai strong{color:var(--txt)}
.chat-typing{display:flex;gap:4px;padding:12px 13px;align-self:flex-start;background:var(--card);border:1px solid var(--border2);border-radius:14px}
.chat-typing span{width:7px;height:7px;border-radius:50%;background:var(--txt3);animation:typing 1.1s ease-in-out infinite}
.chat-typing span:nth-child(2){animation-delay:.2s}
.chat-typing span:nth-child(3){animation-delay:.4s}
@keyframes typing{0%,60%,100%{opacity:.3;transform:scale(1)}30%{opacity:1;transform:scale(1.2)}}
.chat-input-wrap{display:flex;gap:8px;align-items:flex-end;
  border-top:1px solid var(--border);padding:12px 14px;background:var(--surface);flex-shrink:0}
.chat-input-wrap textarea{flex:1;background:var(--card);border:1px solid var(--border2);
  color:var(--txt);border-radius:10px;padding:9px 12px;font-family:inherit;
  font-size:13px;resize:none;max-height:120px;outline:none;line-height:1.5}
.chat-input-wrap textarea:focus{border-color:var(--amber)}
.btn-send{width:38px;height:38px;border-radius:10px;border:none;background:var(--amber);
  color:#1a0f00;font-size:18px;font-weight:700;cursor:pointer;transition:.15s;
  flex-shrink:0;display:flex;align-items:center;justify-content:center}
.btn-send:hover{background:var(--amber2);transform:scale(1.05)}
.btn-send:disabled{opacity:.4;cursor:not-allowed;transform:none}

/* Mobile chat optimizations */
@media (max-width: 720px) {
  .chat-quick {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }
  .chat-quick .chip {
    padding: 10px 6px;
    font-size: 12px;
    text-align: center;
  }
  .chat-messages {
    gap: 12px;
    padding-right: 0;
  }
  .chat-msg {
    max-width: 95%;
    font-size: 14px;
    padding: 14px 16px;
    border-radius: 16px;
  }
  .chat-msg.ai h2,
  .chat-msg.ai h3 {
    font-size: 14px;
  }
  .chat-msg.ai code {
    font-size: 12px;
    padding: 2px 6px;
  }
  .chat-msg.ai pre {
    padding: 12px;
    font-size: 13px;
    border-radius: 10px;
  }
  .chat-typing {
    padding: 14px 16px;
  }
  .chat-input-wrap {
    padding: 14px;
    gap: 10px;
  }
  .chat-input-wrap textarea {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 12px 14px;
    border-radius: 14px;
    min-height: 50px;
  }
  .btn-send {
    width: 48px;
    height: 48px;
    font-size: 22px;
    border-radius: 14px;
  }
}

/* MODAIS */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:60;
  display:flex;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(4px)}
.modal-card{background:var(--surface);border:1px solid var(--border2);border-radius:20px;
  padding:26px;width:100%;max-width:480px;box-shadow:var(--shadow)}
.modal-card.sm{max-width:400px}
.modal-card h3{font-family:'Space Grotesk',sans-serif;font-size:17px;font-weight:700;margin-bottom:18px}
.modal-card textarea{width:100%;background:var(--card);border:1px solid var(--border2);
  color:var(--txt);border-radius:10px;padding:11px;font-family:inherit;font-size:13.5px;
  resize:vertical;outline:none}
.modal-card textarea:focus{border-color:var(--amber)}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}
.drop-zone{border:2px dashed var(--border2);border-radius:14px;padding:36px 20px;
  text-align:center;cursor:pointer;transition:.2s;margin-bottom:4px}
.drop-zone:hover,.drop-zone.drag-on{border-color:var(--amber);background:var(--amber-bg)}
.dz-icon{font-size:40px;margin-bottom:12px}
.drop-zone p{color:var(--txt2);font-size:14px}
.upload-progress{margin-top:16px}
.up-bar{height:6px;background:var(--card);border-radius:3px;overflow:hidden;margin-bottom:8px}
#upFill{height:100%;width:0;background:linear-gradient(90deg,var(--amber),var(--teal));
  transition:width .3s;border-radius:3px}
#upLabel{font-size:12px;color:var(--txt2);font-family:'JetBrains Mono',monospace}
.shortcuts-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;margin-bottom:4px}
.shortcuts-grid>div{display:flex;align-items:center;gap:10px}
kbd{background:var(--card);border:1px solid var(--border2);border-radius:6px;
  padding:4px 8px;font-family:'JetBrains Mono',monospace;font-size:11px;
  color:var(--amber);white-space:nowrap}
.shortcuts-grid span{font-size:12.5px;color:var(--txt2)}
.drag-overlay{position:fixed;inset:0;background:rgba(7,9,13,.85);z-index:80;
  display:flex;align-items:center;justify-content:center;backdrop-filter:blur(6px)}
.drag-msg{font-family:'Space Grotesk',sans-serif;font-size:24px;font-weight:600;
  color:var(--amber);border:3px dashed var(--amber);border-radius:20px;padding:48px 64px}
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);
  background:var(--raised);border:1px solid var(--border2);color:var(--txt);
  padding:12px 22px;border-radius:12px;z-index:90;font-size:13.5px;
  box-shadow:var(--shadow);animation:rise .22s ease;max-width:380px;text-align:center;
  display:flex;align-items:center;gap:8px}
.toast.ok{border-color:var(--teal)}
.toast.err{border-color:var(--danger)}
@keyframes rise{from{opacity:0;transform:translate(-50%,10px)}}
.hamburger{display:none;position:fixed;bottom:20px;right:20px;width:50px;height:50px;
  border-radius:50%;background:var(--amber);color:#1a0f00;border:none;font-size:20px;
  cursor:pointer;z-index:25;box-shadow:0 6px 20px rgba(240,168,46,.4);
  align-items:center;justify-content:center}
.spin{display:inline-block;width:15px;height:15px;border:2px solid var(--border2);
  border-top-color:var(--amber);border-radius:50%;animation:spinning .7s linear infinite;vertical-align:middle}
@keyframes spinning{to{transform:rotate(360deg)}}

/* Mobile modal optimizations */
@media (max-width: 720px) {
  .modal {
    padding: 16px;
    align-items: flex-end;
  }
  .modal-card {
    border-radius: 20px 20px 0 0;
    max-width: 100%;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    animation: slideUp .3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }
  @keyframes slideUp {
    from { opacity: 0; transform: translateY(100%); }
    to { opacity: 1; transform: translateY(0); }
  }
  .modal-card h3 {
    font-size: 18px;
    margin-bottom: 20px;
  }
  .modal-card textarea {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 14px;
    border-radius: 12px;
    min-height: 120px;
  }
  .modal-actions {
    flex-direction: column-reverse;
    gap: 10px;
  }
  .modal-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 15px;
  }
  .drop-zone {
    padding: 40px 16px;
    border-radius: 16px;
  }
  .dz-icon {
    font-size: 48px;
  }
  .drop-zone p {
    font-size: 15px;
  }
  .upload-progress {
    margin-top: 20px;
  }
  .up-bar {
    height: 8px;
    border-radius: 4px;
  }
  #upLabel {
    font-size: 13px;
  }
  .shortcuts-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .shortcuts-grid > div {
    padding: 12px;
    background: var(--card);
    border-radius: 10px;
    border: 1px solid var(--border2);
  }
  kbd {
    font-size: 12px;
    padding: 6px 10px;
  }
  .drag-msg {
    font-size: 18px;
    padding: 32px 24px;
    border-width: 2px;
  }
  .toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    transform: none;
    max-width: none;
    font-size: 14px;
    padding: 14px 18px;
    border-radius: 14px;
  }
  .hamburger {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    font-size: 22px;
  }
}

/* Dashboard mobile optimizations */
@media (max-width: 720px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 15px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .stat-card {
    padding: 16px 14px;
  }
  .stat-val {
    font-size: 28px;
  }
  .stat-icon {
    font-size: 24px;
    right: 12px;
    top: 12px;
  }
  .dash-cols {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .recent-item {
    padding: 16px;
    border-radius: 12px;
  }
  .ri-spine {
    width: 6px;
    height: 40px;
    border-radius: 4px;
  }
  .ri-title {
    font-size: 14px;
  }
  .ri-meta {
    font-size: 12px;
  }
  .ri-pct {
    font-size: 12px;
  }
  .rec-card {
    padding: 20px;
    border-radius: 16px;
    font-size: 14px;
    min-height: auto;
  }
  .rec-card h2, .rec-card h3 {
    font-size: 15px;
  }
  .rec-card code {
    font-size: 12px;
    padding: 2px 6px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-val {
    font-size: 24px;
  }
}

/* RESPONSIVE */
@media(max-width:900px){.dash-cols{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}