/* ============================================================================
   NxtGenSec — Black Ops Terminal Theme for CTFd
   Pure black / white / green. Monospace hacker aesthetic.
   ========================================================================== */

:root {
  --ngs-green:      #138808;
  --ngs-green-dim:  #0e6606;
  --ngs-green-soft: rgba(19, 136, 8, 0.14);
  --ngs-green-line: rgba(19, 136, 8, 0.30);
  --ngs-bg:         #000000;
  --ngs-bg-soft:    #060807;
  --ngs-surface:    #0a0f0c;
  --ngs-surface-2:  #101714;
  --ngs-border:     #1e4614;
  --ngs-text:       #f2faf5;
  --ngs-muted:      #7c9071;
  --ngs-danger:     #ff4d5e;
  --ngs-mono: "Share Tech Mono", "Cascadia Mono", "JetBrains Mono", "Fira Code",
              Consolas, "Liberation Mono", Menlo, "Courier New", monospace;
  --ngs-display: "Orbitron", "Chakra Petch", "Cascadia Mono", system-ui, sans-serif;
  --ngs-body: "Chakra Petch", "Segoe UI", system-ui, -apple-system, sans-serif;
}

/* Every mode stays black. The hacker look never disappears. */
[data-bs-theme="dark"],
[data-bs-theme="light"] {
  --bs-body-bg:           var(--ngs-bg);
  --bs-body-color:        var(--ngs-text);
  --bs-body-font-family:  var(--ngs-body);
  --bs-primary:           var(--ngs-green);
  --bs-primary-rgb:       19, 136, 8;
  --bs-primary-bg-subtle: rgba(19, 136, 8, 0.08);
  --bs-primary-border-subtle: rgba(19, 136, 8, 0.35);
  --bs-primary-text-emphasis: var(--ngs-green);
  --bs-secondary:         #7ecf63;
  --bs-secondary-rgb:     126, 207, 99;
  --bs-secondary-bg-subtle: rgba(126, 207, 99, 0.08);
  --bs-secondary-border-subtle: rgba(126, 207, 99, 0.3);
  --bs-secondary-text-emphasis: #7ecf63;
  --bs-info:              var(--ngs-green);
  --bs-info-rgb:          19, 136, 8;
  --bs-info-bg-subtle:    rgba(19, 136, 8, 0.08);
  --bs-info-border-subtle: rgba(19, 136, 8, 0.35);
  --bs-info-text-emphasis: var(--ngs-green);
  --bs-success:           var(--ngs-green);
  --bs-success-rgb:       19, 136, 8;
  --bs-warning:           var(--ngs-green);
  --bs-warning-rgb:       19, 136, 8;
  --bs-danger:            var(--ngs-danger);
  --bs-danger-rgb:        255, 77, 94;
  --bs-danger-bg-subtle:  rgba(255, 77, 94, 0.08);
  --bs-danger-border-subtle: rgba(255, 77, 94, 0.3);
  --bs-link-color:         #2f9e1b;
  --bs-link-hover-color:   var(--ngs-green);
  --bs-link-decoration:    none;
  --bs-border-color:       #16301f;
  --bs-card-bg:            var(--ngs-surface);
  --bs-card-border-color:  var(--ngs-border);
  --bs-code-color:         var(--ngs-green);
  --bs-body-bg-rgb:        0, 0, 0;
}

/* ---- CRT-ish backdrop: faint matrix grid + green glow, pure black base ---- */
body {
  background:
    radial-gradient(1000px 480px at 80% -12%, rgba(19, 136, 8, 0.07), transparent 60%),
    radial-gradient(800px 420px at -12% -6%, rgba(19, 136, 8, 0.05), transparent 55%),
    #000000;
  background-attachment: fixed;
  background-color: #000000;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

[data-bs-theme="light"] body {
  background:
    radial-gradient(1000px 480px at 80% -12%, rgba(19, 136, 8, 0.07), transparent 60%),
    radial-gradient(800px 420px at -12% -6%, rgba(19, 136, 8, 0.05), transparent 55%),
    #000000;
  background-attachment: fixed;
}

main[role="main"] { flex: 1 0 auto; }

/* ============================================================================
   CYBER FONTS (Orbitron display / Chakra Petch body / Share Tech Mono terminal)
   ========================================================================== */
body {
  font-family: var(--ngs-body);
  letter-spacing: 0.2px;
}

h1, h2, h3, h4, h5, h6,
.navbar-brand,
.btn,
.badge,
.dropdown-item,
.nav-pills .nav-link,
.table thead th,
.category-header h3,
.challenge-button,
.challenge-name,
.challenge-value,
.challenge-tag,
.ngs-brand-text,
.ngs-error-code,
.ngs-error h1,
.footer a,
.alert strong,
.nav-tabs .nav-link,
.form-label,
.stat-text,
#team-place,
#team-score,
.blockquote,
.card-title {
  font-family: var(--ngs-display);
}

/* Numeric / data readouts get the sharper terminal face */
#scoreboard .table td,
#team-score small,
#team-place small,
.challenge-value::after {
  font-family: var(--ngs-mono);
}

/* Subtle scanlines over everything — the terminal look */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.22) 0px,
    rgba(0, 0, 0, 0.22) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0.35;
  animation: ngs-flicker 8s infinite;
}

@keyframes ngs-flicker {
  0%, 100% { opacity: 0.32; }
  92%      { opacity: 0.32; }
  93%      { opacity: 0.18; }
  94%      { opacity: 0.34; }
  96%      { opacity: 0.26; }
}

/* ---- Top brand accent bar (pure green now) ---- */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 9100;
  background: linear-gradient(90deg, var(--ngs-green-dim), var(--ngs-green) 50%, var(--ngs-green-dim));
  box-shadow: 0 0 12px rgba(19, 136, 8, 0.55);
}

::selection { background: var(--ngs-green); color: #041a05; }

/* ---- Scrollbars ---- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #040604; }
::-webkit-scrollbar-thumb {
  background: #1c580f;
  border-radius: 6px;
  border: 2px solid #040604;
}
::-webkit-scrollbar-thumb:hover { background: var(--ngs-green-dim); }

/* ============================================================================
   NAVBAR
   ========================================================================== */
.navbar.ngs-navbar {
  background: rgba(0, 0, 0, 0.96) !important;
  border-bottom: 1px solid var(--ngs-green-line);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 18px rgba(19, 136, 8, 0.07);
}

.ngs-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.ngs-brand::before {
  content: ">_";
  font-family: var(--ngs-mono);
  color: var(--ngs-green);
  font-weight: 700;
  font-size: 0.9rem;
}

.ngs-brand .ngs-brand-logo { height: 34px; width: auto; }

.ngs-brand .ngs-brand-text {
  font-family: var(--ngs-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--ngs-text);
}

.ngs-brand .ngs-accent { color: var(--ngs-green); }

.navbar.ngs-navbar .nav-link {
  color: #b3c9a6;
  font-size: 0.92rem;
  letter-spacing: 0.4px;
  transition: color 0.15s ease;
}

.navbar.ngs-navbar .nav-link:hover,
.navbar.ngs-navbar .nav-link:focus,
.navbar.ngs-navbar .nav-link.active {
  color: var(--ngs-green);
  text-shadow: 0 0 10px rgba(19, 136, 8, 0.45);
}

.navbar.ngs-navbar .badge-notification { color: #fff; }

/* ============================================================================
   HEADINGS / TERMINAL PROMPT
   ========================================================================== */
.jumbotron {
  background:
    linear-gradient(rgba(19, 136, 8, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 136, 8, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, #040706, #000);
  background-size: 34px 34px, 34px 34px, 100% 100%;
  border-bottom: 1px solid var(--ngs-green-line);
  border-top: 1px solid rgba(19, 136, 8, 0.08);
  padding: 2.4rem 0;
}

.jumbotron h1 {
  font-family: var(--ngs-display);
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--ngs-text);
  text-shadow: 0 0 22px rgba(19, 136, 8, 0.28);
}

.jumbotron h1::before {
  content: "> ";
  color: var(--ngs-green);
}

.jumbotron h1::after {
  content: "\258B";
  color: var(--ngs-green);
  margin-left: 2px;
  animation: ngs-blink 1.1s steps(1) infinite;
}

@keyframes ngs-blink {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0; }
}

.jumbotron h2, .jumbotron h3 { color: var(--ngs-text); }

/* ============================================================================
   BUTTONS (terminal style)
   ========================================================================== */
.btn {
  border-radius: 0.35rem;
  font-weight: 600;
  border-width: 1px;
  transition: all 0.15s ease;
}

.btn-primary,
.btn-info {
  background: transparent;
  border: 1px solid var(--ngs-green-line);
  color: var(--ngs-green);
  text-shadow: 0 0 8px rgba(19, 136, 8, 0.35);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:not(:disabled):not(.disabled):active,
.btn-info:hover,
.btn-info:focus,
.btn-info:not(:disabled):not(.disabled):active {
  background: var(--ngs-green);
  border-color: var(--ngs-green);
  color: #041a05;
  text-shadow: none;
  box-shadow: 0 0 18px rgba(19, 136, 8, 0.4);
}

.btn-outline-info,
.btn-outline-success {
  background: transparent;
  border: 1px solid var(--ngs-green-line);
  color: var(--ngs-green);
}

.btn-outline-info:hover,
.btn-outline-success:hover {
  background: var(--ngs-green);
  border-color: var(--ngs-green);
  color: #041a05;
}

.btn-outline-danger {
  background: transparent;
  border: 1px solid rgba(255, 77, 94, 0.5);
  color: var(--ngs-danger);
}

.btn-outline-danger:hover {
  background: var(--ngs-danger);
  border-color: var(--ngs-danger);
  color: #fff;
}

.btn-outline-secondary,
.btn-secondary {
  background: transparent;
  border: 1px solid rgba(126, 207, 99, 0.35);
  color: #7ecf63;
}

.btn-outline-secondary:hover,
.btn-secondary:hover {
  background: rgba(19, 136, 8, 0.12);
  border-color: var(--ngs-green);
  color: var(--ngs-green);
}

/* ============================================================================
   FORMS
   ========================================================================== */
.form-control,
.form-select,
.input-group-text {
  background-color: #050807;
  border: 1px solid var(--ngs-border);
  color: var(--ngs-text);
  border-radius: 0.3rem;
}

.form-control::placeholder { color: #4d6259; }

.form-control:focus,
.form-select:focus {
  background-color: #050807;
  border-color: var(--ngs-green);
  color: var(--ngs-text);
  box-shadow: 0 0 0 0.2rem rgba(19, 136, 8, 0.18);
}

/* Flag input behaves like a shell prompt */
.challenge-input {
  font-family: var(--ngs-mono);
}

.form-label { color: var(--ngs-muted); }

/* Pretty checkboxes/radios */
.form-check-input:checked { background-color: var(--ngs-green); border-color: var(--ngs-green); }
.form-check-input:focus { border-color: var(--ngs-green); box-shadow: 0 0 0 0.2rem rgba(19, 136, 8, 0.15); }

/* ============================================================================
   CARDS / PANELS
   ========================================================================== */
.card {
  background-color: var(--ngs-surface);
  border: 1px solid var(--ngs-border);
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
}

.card:hover { border-color: var(--ngs-green-line); }
.card-header { background: rgba(19, 136, 8, 0.05); border-bottom: 1px solid var(--ngs-border); }

/* ============================================================================
   TABLES
   ========================================================================== */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--ngs-text);
  --bs-table-border-color: var(--ngs-border);
  --bs-table-striped-color: var(--ngs-text);
  --bs-table-striped-bg: rgba(19, 136, 8, 0.035);
  --bs-table-hover-color: var(--ngs-text);
  --bs-table-hover-bg: rgba(19, 136, 8, 0.08);
  color: var(--ngs-text);
}

.table thead th {
  font-family: var(--ngs-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--ngs-green);
  border-bottom: 1px solid var(--ngs-green-line);
}

.table td, .table th { border-color: var(--ngs-border); }

.table a { color: #7ecf63; }
.table a:hover, .table a:focus { color: var(--ngs-green); text-decoration: underline; }

/* Scoreboard podium glow */
#scoreboard .table tbody tr:nth-child(1) {
  box-shadow: inset 3px 0 0 var(--ngs-green);
  background: rgba(19, 136, 8, 0.08);
}
#scoreboard .table tbody tr:nth-child(2) {
  box-shadow: inset 3px 0 0 rgba(19, 136, 8, 0.45);
}
#scoreboard .table tbody tr:nth-child(3) {
  box-shadow: inset 3px 0 0 rgba(19, 136, 8, 0.22);
}

/* ============================================================================
   CHALLENGE BOARD + CARDS
   ========================================================================== */
.category-header h3 {
  font-family: var(--ngs-mono);
  letter-spacing: 1px;
  color: var(--ngs-text);
}

.category-header h3::before {
  content: "[+] ";
  color: var(--ngs-green);
}

.challenge-button {
  background: var(--ngs-surface);
  border: 1px solid var(--ngs-border);
  color: #d3e8c8;
  border-radius: 6px;
  font-family: var(--ngs-mono);
  transition: all 0.16s ease;
}

.challenge-button:hover,
.challenge-button:focus {
  border-color: var(--ngs-green);
  color: var(--ngs-text);
  background: var(--ngs-surface-2);
  box-shadow: 0 0 20px rgba(19, 136, 8, 0.16), inset 0 0 22px rgba(19, 136, 8, 0.05);
  transform: translateY(-2px);
}

.challenge-button .challenge-name { font-weight: 700; letter-spacing: 0.5px; color: var(--ngs-text); }
.challenge-button .challenge-value { color: var(--ngs-muted); font-size: 0.85rem; }

.challenge-button.challenge-solved {
  border-color: var(--ngs-green);
  color: var(--ngs-green);
  box-shadow: 0 0 14px rgba(19, 136, 8, 0.18), inset 3px 0 0 var(--ngs-green);
}
.challenge-button.challenge-solved .challenge-name,
.challenge-button.challenge-solved .challenge-value { color: var(--ngs-green); }

/* ============================================================================
   CHALLENGE MODAL
   ========================================================================== */
.modal-content {
  background: var(--ngs-surface);
  border: 1px solid var(--ngs-green-line);
  border-radius: 10px;
  box-shadow: 0 0 40px rgba(19, 136, 8, 0.12);
}

.modal-backdrop { background: #000; }
.modal-backdrop.show { opacity: 0.85; }

.modal-content .nav-tabs { border-bottom: 1px solid var(--ngs-border); }
.modal-content .nav-tabs .nav-link { color: var(--ngs-muted); border: none; }
.modal-content .nav-tabs .nav-link:hover { color: var(--ngs-green); }
.modal-content .nav-tabs .nav-link.active {
  background: transparent;
  color: var(--ngs-green);
  border-bottom: 2px solid var(--ngs-green);
  text-shadow: 0 0 8px rgba(19, 136, 8, 0.4);
}

.challenge-name { font-family: var(--ngs-mono); color: var(--ngs-text); }
.challenge-value {
  font-family: var(--ngs-mono);
  color: var(--ngs-green);
  text-shadow: 0 0 14px rgba(19, 136, 8, 0.4);
}
.challenge-value::after { content: " pts"; color: var(--ngs-muted); font-size: 0.6em; }

.challenge-tag {
  background: transparent;
  border: 1px solid var(--ngs-green-line);
  color: var(--ngs-green);
  font-family: var(--ngs-mono);
  text-transform: lowercase;
}

.challenge-desc code,
.challenge-desc pre,
.challenge-connection-info code {
  color: var(--ngs-green);
}

.challenge-connection-info {
  font-family: var(--ngs-mono);
  color: #7ecf63;
}

textarea, code, kbd, pre, samp {
  font-family: var(--ngs-mono);
}

/* hints */
.challenge-hints details summary {
  cursor: pointer;
  color: #7ecf63;
}
.challenge-hints details[open] summary { color: var(--ngs-green); }
.challenge-hints details { border: 1px solid var(--ngs-border); border-radius: 6px; padding: 0.5rem 0.9rem; margin-bottom: 0.5rem; }

/* ============================================================================
   ALERTS (semantic, but on-brand)
   ========================================================================== */
.alert { border-radius: 6px; border-width: 1px; }
.alert-success {
  background: #041a05;
  border-color: var(--ngs-green);
  color: var(--ngs-green);
}
.alert-info {
  background: #041a05;
  border-color: var(--ngs-green-line);
  color: #7ecf63;
}
.alert-warning {
  background: #101508;
  border-color: rgba(255, 222, 89, 0.4);
  color: #ffe65c;
}
.alert-danger {
  background: #170609;
  border-color: rgba(255, 77, 94, 0.5);
  color: var(--ngs-danger);
}

/* ============================================================================
   BADGES / PILLS
   ========================================================================== */
.badge.bg-primary,
.badge.bg-info,
.badge.bg-secondary,
.badge.rounded-pill.bg-primary,
.text-bg-light {
  font-family: var(--ngs-mono);
  background: transparent !important;
  border: 1px solid var(--ngs-green-line);
  color: var(--ngs-green);
}

/* nav pills on scoreboard */
.nav-pills .nav-link { color: var(--ngs-muted); border: 1px solid transparent; }
.nav-pills .nav-link:hover { color: var(--ngs-green); }
.nav-pills .nav-link.active {
  background: transparent;
  color: var(--ngs-green);
  border: 1px solid var(--ngs-green);
  text-shadow: 0 0 8px rgba(19, 136, 8, 0.4);
}

/* ============================================================================
   PROGRESS BARS (kept green-red legend)
   ========================================================================== */
.progress { background: #060a08; border: 1px solid var(--ngs-border); }

/* spinner + score graph */
.spinner { color: var(--ngs-green); }
.ctf-graph text { fill: var(--ngs-muted); }

/* ============================================================================
   NOTIFICATIONS
   ========================================================================== */
.card.bg-body-tertiary { background: var(--ngs-surface); }
.blockquote p { color: var(--ngs-text); }

/* ============================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: #000;
  border-top: 1px solid var(--ngs-green-line);
  padding: 1.1rem 0;
  flex-shrink: 0;
}

.footer .ngs-footer-logo { height: 28px; width: auto; opacity: 0.95; }

.footer a,
.footer .text-muted,
.footer .text-secondary {
  color: var(--ngs-muted) !important;
  font-family: var(--ngs-mono);
  font-size: 0.78rem;
  letter-spacing: 0.3px;
}

.footer a:hover { color: var(--ngs-green) !important; text-shadow: 0 0 8px rgba(19, 136, 8, 0.4); }

/* ============================================================================
   AUTH PAGES
   ========================================================================== */
.ngs-auth-hero { text-align: center; }

.ngs-auth-hero img.ngs-vertical-logo {
  max-width: 230px;
  margin-bottom: 0.9rem;
  filter: drop-shadow(0 0 18px rgba(19, 136, 8, 0.25));
}

.ngs-auth-hero h1 { font-size: 1.6rem; font-family: var(--ngs-display); letter-spacing: 1px; }
.ngs-auth-hero h1 .ngs-green { color: var(--ngs-green); text-shadow: 0 0 16px rgba(19, 136, 8, 0.5); }
.ngs-auth-hero .ngs-tagline {
  color: var(--ngs-muted);
  font-family: var(--ngs-mono);
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}
.ngs-auth-hero .ngs-tagline .ngs-green { color: var(--ngs-green); }

.ngs-panel {
  border-top: 2px solid var(--ngs-green);
}

/* ============================================================================
   ERROR PAGES (terminal diagnostics)
   ========================================================================== */
.ngs-error {
  font-family: var(--ngs-mono);
}

.ngs-error .ngs-error-code {
  color: var(--ngs-green);
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1;
  text-shadow: 0 0 30px rgba(19, 136, 8, 0.45);
  display: block;
}

.ngs-error .ngs-error-msg {
  color: var(--ngs-muted);
}

.ngs-error pre.ngs-diag {
  color: #7ecf63;
  background: #040604;
  border: 1px solid var(--ngs-border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  text-align: left;
  display: inline-block;
  margin-top: 1.2rem;
  box-shadow: 0 0 24px rgba(19, 136, 8, 0.08);
}

.ngs-error pre.ngs-diag .r { color: var(--ngs-danger); }
.ngs-error pre.ngs-diag .g { color: var(--ngs-green); }
.ngs-error pre.ngs-diag .m { color: var(--ngs-muted); }

/* ============================================================================
   MISC NICETIES
   ========================================================================== */
:focus-visible { outline: 1px solid var(--ngs-green); outline-offset: 2px; }

.dropdown-menu {
  background: var(--ngs-surface);
  border: 1px solid var(--ngs-border);
}
.dropdown-menu .dropdown-item { color: var(--ngs-text); }
.dropdown-menu .dropdown-item:hover { background: rgba(19, 136, 8, 0.1); color: var(--ngs-green); }

a { color: var(--bs-link-color); }
a:hover { color: var(--bs-link-hover-color); }

.text-muted, .text-secondary { color: var(--ngs-muted) !important; }
.text-success { color: var(--ngs-green) !important; }

hr { border-color: var(--ngs-border); }
.blockquote-footer { color: var(--ngs-muted); }

#score-graph svg text { fill: var(--ngs-muted); }