:root {
  --void: #050706;
  --panel: #0d1210;
  --panel-2: #131a17;
  --line: #22302a;
  --text: #d5e8dc;
  --text-dim: #5c7268;

  --signal: #4ecb8a;
  --cyan: #4ad4d4;
  --amber: #ffb454;
  --risk: #ff5c72;

  --font-display: 'JetBrains Mono', ui-monospace, monospace;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--void); color: var(--text); font-family: var(--font-mono); }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

a { color: var(--cyan); }
code { font-family: var(--font-mono); background: var(--panel-2); padding: 2px 6px; border-radius: 3px; color: var(--amber); font-size: 0.88em; }
pre { background: var(--panel-2); border: 1px solid var(--line); border-radius: 4px; padding: 14px; overflow-x: auto; font-family: var(--font-mono); font-size: 13px; }
pre code { background: none; padding: 0; }

/* ambient CRT texture over the whole OS, applies to everything since
   it's all 2D now, no WebGL needed for this at all */
body.no-crt::before, body.no-crt::after { display: none; }

body::before {
  content: ""; position: fixed; inset: 0; z-index: 900; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.1) 0px, transparent 1px, transparent 2px);
  opacity: 0.4;
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: 899; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.45) 100%);
}

/* -------- boot sequence -------- */
#boot-screen {
  position: fixed; inset: 0; z-index: 1000; background: var(--void);
  padding: 8vh 8vw; font-size: 14px; color: var(--signal); overflow: hidden;
}
.boot-line { min-height: 1.6em; white-space: pre-wrap; }
#boot-ascii { color: var(--signal); font-size: 11px; line-height: 1.15; margin-bottom: 24px; white-space: pre; }

/* -------- login screen -------- */
#login-screen {
  position: fixed; inset: 0; z-index: 900; display: none; align-items: center; justify-content: center;
  background: var(--void);
}
#login-box {
  width: min(460px, 90vw); border: 1px solid var(--line); border-radius: 8px; background: var(--panel);
  padding: 34px 38px; box-shadow: 0 0 60px rgba(78,203,138,0.06);
}
#login-box h1 { font-family: var(--font-display); font-size: 15px; letter-spacing: 2px; color: var(--signal); text-transform: uppercase; margin: 0 0 4px; }
#login-box .login-sub { color: var(--text-dim); font-size: 11px; margin-bottom: 26px; }
.login-prompt-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; min-height: 1.4em; }
.login-label { color: var(--text-dim); width: 80px; flex-shrink: 0; }
.login-value { color: var(--signal); }
.login-cursor { width: 7px; height: 14px; background: var(--signal); animation: cursor-blink 1s step-end infinite; }
@keyframes cursor-blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
#login-result { font-weight: 700; margin-top: 10px; min-height: 1.4em; }
#login-result.granted { color: var(--signal); }

/* -------- desktop -------- */
#desktop {
  position: fixed; inset: 0; z-index: 10; display: none; flex-direction: column;
  background: linear-gradient(180deg, rgba(5,7,6,0.55), rgba(5,7,6,0.75)), url('../assets/wallpaper.png');
  background-size: cover; background-position: center;
}
#desktop-surface { flex: 1; position: relative; overflow: hidden; }

#desktop-icons { position: absolute; top: 24px; left: 24px; display: flex; flex-direction: column; gap: 22px; z-index: 2; }
.app-icon { display: flex; flex-direction: column; align-items: center; gap: 6px; width: 78px; cursor: pointer; background: none; border: none; }
.app-icon-glyph {
  width: 46px; height: 46px; border-radius: 8px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; border: 1px solid var(--line); background: var(--panel);
}
.app-icon:hover .app-icon-glyph { border-color: var(--cyan); box-shadow: 0 0 14px rgba(74,212,212,0.25); }
.app-icon-label { font-family: var(--font-mono); font-size: 10px; color: var(--text); text-align: center; line-height: 1.3; }

#taskbar {
  display: flex; align-items: center; gap: 14px; padding: 10px 16px; background: var(--panel-2);
  border-top: 1px solid var(--line); font-family: var(--font-mono); font-size: 11.5px; flex-shrink: 0;
}
#taskbar-brand { color: var(--signal); font-weight: 700; letter-spacing: 1px; }
#taskbar-windows { display: flex; gap: 8px; flex: 1; }
.taskbar-window-chip { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 5px 10px; color: var(--text-dim); cursor: pointer; }
.taskbar-window-chip.active { border-color: var(--signal); color: var(--signal); }
#taskbar-clock { color: var(--text-dim); }
#btn-logout { font-family: var(--font-mono); font-size: 10.5px; background: var(--panel); border: 1px solid var(--line); color: var(--text-dim); border-radius: 3px; padding: 6px 12px; cursor: pointer; }
#btn-logout:hover { border-color: var(--risk); color: var(--risk); }

/* -------- windows -------- */
.os-window {
  position: absolute; width: 560px; max-width: 90vw; height: 460px; max-height: 78vh;
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 16px 50px rgba(0,0,0,0.55);
  display: flex; flex-direction: column; overflow: hidden;
  animation: window-open 0.22s cubic-bezier(0.2, 0.8, 0.3, 1.1);
}
.os-window.closing { animation: window-close 0.16s ease-in forwards; }
@keyframes window-open {
  from { opacity: 0; transform: scale(0.92) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes window-close {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0; transform: scale(0.94); }
}
.os-window::before, .os-window::after {
  content: ""; position: absolute; width: 14px; height: 14px; pointer-events: none; z-index: 5;
  border-color: var(--signal); opacity: 0.55;
}
.os-window::before { top: -1px; left: -1px; border-top: 2px solid; border-left: 2px solid; border-radius: 8px 0 0 0; }
.os-window::after { bottom: -1px; right: -1px; border-bottom: 2px solid; border-right: 2px solid; border-radius: 0 0 8px 0; }
.window-titlebar {
  display: flex; align-items: center; justify-content: space-between; padding: 9px 13px;
  background: var(--panel-2); border-bottom: 1px solid var(--line); cursor: grab; user-select: none;
  font-family: var(--font-mono); font-size: 11.5px; color: var(--text-dim);
}
.window-titlebar:active { cursor: grabbing; }
.window-titlebar.focused { color: var(--signal); }
.window-close { background: none; border: 1px solid var(--line); color: var(--text-dim); border-radius: 3px; width: 22px; height: 22px; cursor: pointer; font-size: 13px; }
.window-close:hover { border-color: var(--risk); color: var(--risk); }
.window-body { flex: 1; overflow-y: auto; padding: 22px 26px; font-family: var(--font-body); }

/* -------- case content (rendered inside windows), styled as an
   intelligence dossier rather than a plain content page */
.case-classbar {
  display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 1.5px; color: var(--void); background: var(--signal);
  padding: 5px 12px; margin: -22px -26px 20px; border-radius: 8px 8px 0 0; text-transform: uppercase;
}
.case-header {
  border-bottom: 2px solid var(--line); padding-bottom: 16px; margin-bottom: 24px; position: relative;
}
.case-eyebrow {
  font-family: var(--font-mono); font-size: 10.5px; color: var(--cyan); letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 8px; display: flex; align-items: center; gap: 8px;
}
.case-eyebrow::before { content: "\25C6"; color: var(--signal); }
.case-view h1 { font-family: var(--font-display); font-weight: 700; color: var(--text); font-size: 22px; margin: 0 0 8px; letter-spacing: 0.3px; }
.case-subtitle { color: var(--text-dim); font-size: 14px; font-style: italic; }
.case-view { line-height: 1.7; font-size: 15px; }
.case-view h2 {
  font-family: var(--font-display); color: var(--amber); font-size: 16px; text-transform: uppercase; letter-spacing: 0.5px;
  margin: 32px 0 14px; padding: 8px 0 8px 14px; border-left: 3px solid var(--amber); background: linear-gradient(90deg, rgba(255,180,84,0.06), transparent);
}
.case-view h2:first-of-type { margin-top: 0; }
.case-view h3 { font-family: var(--font-display); color: var(--text); font-size: 14px; margin: 22px 0 10px; padding-left: 10px; border-left: 2px solid var(--line); }
.case-view strong { color: var(--amber); }
.case-view table { width: 100%; border-collapse: collapse; margin-bottom: 18px; font-size: 13px; font-family: var(--font-mono); }
.case-view th, .case-view td { text-align: left; padding: 8px 11px; border-bottom: 1px solid var(--line); }
.case-view th { font-size: 10px; color: var(--cyan); text-transform: uppercase; }

.reading-progress-track { position: sticky; top: 0; height: 3px; background: var(--panel-2); z-index: 20; margin: -22px -26px 20px; }
.reading-progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--cyan), var(--signal)); transition: width 0.1s linear; }

.tag-block { border-radius: 4px; padding: 14px 16px; margin: 0 0 18px; border: 1px solid var(--line); border-left: 4px solid var(--line); background: var(--panel-2); }
.tag-label { font-family: var(--font-display); font-weight: 700; font-size: 10px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 6px; }
.tag-block.tip { border-left-color: var(--amber); } .tag-block.tip .tag-label { color: var(--amber); }
.tag-block.risk { border-left-color: var(--risk); } .tag-block.risk .tag-label { color: var(--risk); }
.tag-block.ethics { border-left-color: var(--cyan); } .tag-block.ethics .tag-label { color: var(--cyan); }
.tag-block.verified { border-left-color: var(--signal); } .tag-block.verified .tag-label { color: var(--signal); }

.checklist { list-style: none; padding: 0; margin: 0 0 20px; }
.checklist li { display: flex; gap: 10px; padding: 7px 0; border-bottom: 1px dotted var(--line); }
.checklist li::before { content: "\2610"; color: var(--cyan); flex-shrink: 0; }

.practice-file { position: relative; border: 2px solid var(--line); border-radius: 6px; padding: 20px; margin: 20px 0; background: var(--void); }
.practice-stamp {
  position: absolute; top: 12px; right: 14px; border: 3px solid var(--risk); color: var(--risk);
  font-family: var(--font-display); font-weight: 700; font-size: 10.5px; letter-spacing: 1.5px; text-transform: uppercase;
  padding: 5px 9px; transform: rotate(5deg); opacity: 0.85; border-radius: 3px;
}
.reveal-btn {
  font-family: var(--font-display); font-size: 10.5px; letter-spacing: 0.5px; text-transform: uppercase;
  padding: 8px 14px; background: var(--panel-2); border: 1px solid var(--cyan); color: var(--cyan);
  border-radius: 3px; cursor: pointer; margin: 8px 0;
}
.reveal-btn:hover { background: rgba(74,212,212,0.1); }
.reveal-content { display: none; margin-top: 10px; padding: 13px; background: var(--panel); border-left: 3px solid var(--signal); border-radius: 3px; }
.reveal-content.open { display: block; }

.case-actions { margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--line); }
.btn-mark-complete {
  font-family: var(--font-display); font-size: 11px; letter-spacing: 0.5px; text-transform: uppercase;
  padding: 9px 15px; border-radius: 4px; border: 1.5px solid var(--cyan); background: transparent; color: var(--cyan); cursor: pointer;
}
.btn-mark-complete.done { border-color: var(--signal); color: var(--signal); }

/* -------- file browser app -------- */
.filebrowser-list { display: flex; flex-direction: column; gap: 2px; }
.file-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 4px; cursor: pointer; border: 1px solid transparent; }
.file-row:hover { background: var(--panel-2); border-color: var(--line); }
.file-row-icon { color: var(--cyan); }
.file-row-name { flex: 1; font-family: var(--font-mono); font-size: 13px; }
.file-row-status { font-size: 10px; color: var(--text-dim); }
.file-row-status.done { color: var(--signal); }

/* -------- network map app -------- */
#network-map-svg { width: 100%; height: 100%; }
.map-node { cursor: pointer; }
.map-node circle { fill: var(--panel-2); stroke: var(--line); stroke-width: 1.5; transition: stroke 0.2s; }
.map-node:hover circle { stroke: var(--cyan); }
.map-node.done circle { stroke: var(--signal); }
.map-node text { fill: var(--text); font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; }
.map-link { stroke: var(--line); stroke-width: 1; }
.map-pulse { fill: var(--cyan); }
.map-hub circle { fill: var(--signal); }
.map-hub text { fill: var(--void); font-weight: 700; font-size: 10px; }

/* -------- terminal app -------- */
.term-app { height: 100%; display: flex; flex-direction: column; font-family: var(--font-mono); font-size: 13px; padding: 14px 16px; }
.term-output { flex: 1; overflow-y: auto; color: var(--signal); white-space: pre-wrap; margin-bottom: 8px; }
.term-output .term-line-echo { color: var(--text); }
.term-output .term-line-error { color: var(--risk); }
.term-input-row { display: flex; align-items: center; gap: 8px; border-top: 1px solid var(--line); padding-top: 10px; }
.term-prompt { color: var(--cyan); }
#term-input { flex: 1; background: none; border: none; color: var(--text); font-family: var(--font-mono); font-size: 13px; outline: none; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--void); }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }

@media (max-width: 700px) {
  .os-window { width: 94vw; height: 70vh; }
  #desktop-icons { top: 16px; left: 16px; gap: 16px; }
}

/* -------- desktop stats widget -------- */
#desktop-widget {
  position: absolute; bottom: 24px; right: 24px; width: 220px; padding: 14px 16px; z-index: 2;
  background: rgba(13,18,16,0.82); border: 1px solid var(--line); border-radius: 8px;
  backdrop-filter: blur(4px); font-family: var(--font-mono); font-size: 10.5px; color: var(--text-dim);
}
#widget-status { display: flex; align-items: center; gap: 7px; color: var(--signal); margin-bottom: 10px; letter-spacing: 0.5px; }
.widget-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 6px var(--signal); animation: widget-pulse 2s ease-in-out infinite; }
@keyframes widget-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
#widget-progress-label { margin-bottom: 6px; }
#widget-progress-track { height: 4px; background: var(--panel-2); border-radius: 2px; overflow: hidden; margin-bottom: 12px; }
#widget-progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--cyan), var(--signal)); transition: width 0.4s ease; }
#widget-date { border-top: 1px dashed var(--line); padding-top: 8px; font-size: 9.5px; }

/* faint sweeping scan line across the desktop for atmosphere, purely
   decorative, sits above the wallpaper but below the icons/windows */
#desktop-surface::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, rgba(78,203,138,0.05) 50%, transparent 100%);
  height: 40%; animation: desktop-scan 7s linear infinite;
}
@keyframes desktop-scan { 0% { transform: translateY(-100%); } 100% { transform: translateY(250%); } }
#windows-layer { position: relative; z-index: 2; }

/* -------- toast notifications -------- */
#toast-layer { position: fixed; top: 20px; right: 20px; z-index: 950; display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.toast {
  width: 270px; padding: 12px 14px; background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--signal);
  border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,0.4); font-family: var(--font-mono); font-size: 11.5px;
  animation: toast-in 0.25s cubic-bezier(0.2, 0.8, 0.3, 1.1);
}
.toast.leaving { animation: toast-out 0.2s ease-in forwards; }
.toast-title { color: var(--signal); font-weight: 700; margin-bottom: 4px; letter-spacing: 0.5px; }
.toast-body { color: var(--text-dim); line-height: 1.5; }
@keyframes toast-in { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(30px); } }

/* -------- field certification -------- */
#cert-overlay {
  position: fixed; inset: 0; z-index: 980; background: rgba(2,3,3,0.88); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; padding: 24px;
  animation: cert-fade-in 0.4s ease;
}
@keyframes cert-fade-in { from { opacity: 0; } to { opacity: 1; } }
#cert-card {
  width: min(520px, 92vw); background: var(--panel); border: 2px solid var(--signal); border-radius: 10px;
  padding: 42px 40px; text-align: center; box-shadow: 0 0 60px rgba(78,203,138,0.2);
  animation: cert-pop-in 0.35s cubic-bezier(0.2, 0.8, 0.3, 1.1);
}
@keyframes cert-pop-in { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
#cert-mark { font-size: 28px; color: var(--signal); margin-bottom: 10px; }
#cert-heading { font-family: var(--font-display); font-weight: 700; font-size: 22px; letter-spacing: 3px; color: var(--text); margin-bottom: 6px; }
#cert-sub { font-family: var(--font-mono); font-size: 11px; color: var(--signal); letter-spacing: 1px; margin-bottom: 26px; }
#cert-body { font-size: 14px; line-height: 1.7; color: var(--text-dim); margin-bottom: 24px; }
#cert-body strong { color: var(--amber); }
#cert-date, #cert-id { font-family: var(--font-mono); font-size: 10.5px; color: var(--text-dim); margin-bottom: 4px; }
#cert-id { margin-bottom: 24px; letter-spacing: 1px; }
#btn-close-cert {
  font-family: var(--font-display); font-weight: 700; font-size: 11.5px; letter-spacing: 1px; text-transform: uppercase;
  padding: 11px 24px; border-radius: 4px; border: 1.5px solid var(--signal); background: transparent; color: var(--signal); cursor: pointer;
}
#btn-close-cert:hover { background: rgba(78,203,138,0.1); }