/* =================================================================
   MyTCRPlus Academy - instrument-dark surface
   Applied to: academy.mytcrplus.com
   Rules: one accent (#76B900), canvas #070807, plate + 1px line,
          no shadows, live constellation field, square hero submit
   ================================================================= */

:root {
    --id-accent:        #76B900;
    --id-accent-press:  #5A8D00;
    --id-accent-hover:  #8AD400;
    --id-on-accent:     #0A0A0A;
    --id-canvas:        #070807;
    --id-canvas-mid:    #0C0E0C;
    --id-plate:         #111311;
    --id-recess:        #161916;
    --id-plate-hover:   #1C1F1C;
    --id-line:          #2A2E2A;
    --id-line-strong:   #3A403A;
    --id-ink:           #F5F5F5;
    --id-ink-2:         #C8CBC8;
    --id-mute:          #8B908B;
    --id-mute-dim:      #6A6E6A;
    --id-info:          #3B6BFF;
    --id-avail:         #7A5CFF;
    --id-warn:          #E8B800;
    --id-danger:        #E52020;
    --id-r-sm:          6px;
    --id-r-md:          12px;
    --id-r-lg:          16px;
    --id-font:          "Inter", "Segoe UI", system-ui, sans-serif;
    --id-mono:          "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

/* --- canvas + wash ------------------------------------------- */
#id-net,
.id-net {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}
.id-wash {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 90% 70% at 8% -10%, rgba(118,185,0,.22), transparent 52%),
        radial-gradient(ellipse 50% 40% at 82% 6%,  rgba(118,185,0,.08), transparent 50%);
}

/* --- base ---------------------------------------------------- */
html, body {
    background: var(--id-canvas) !important;
    color: var(--id-ink);
    font-family: var(--id-font);
}
body {
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; }

:focus-visible {
    outline: 2px solid var(--id-accent);
    outline-offset: 2px;
    border-radius: 6px;
}

/* --- nav (logged-out public header) ------------------------- */
.site-header,
.app-topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(10,11,10,.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--id-line);
    height: 64px;
}
.navbar { background: transparent !important; height: 64px; }
.navbar .container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 48px;
    height: 64px;
    display: flex;
    align-items: center;
    gap: 28px;
}
.navbar-brand { display: flex; align-items: center; gap: 10px; }
.navbar-brand .logo { height: 28px; width: auto; filter: brightness(0) invert(1); }
.navbar-menu { margin-left: auto; }
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    font-size: 14px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.navbar-nav a {
    color: var(--id-ink-2);
    height: 64px;
    display: inline-flex;
    align-items: center;
    border-bottom: 2px solid transparent;
    transition: color .12s, border-color .12s;
}
.navbar-nav a:hover,
.navbar-nav a.nav-active {
    color: var(--id-ink);
    border-bottom-color: var(--id-accent);
}
.navbar-nav a.btn-primary,
.navbar-nav a.btn-primary:hover { color: var(--id-on-accent); border-bottom-color: transparent; }
.navbar-toggle { display: none; }

/* --- buttons ------------------------------------------------- */
.btn {
    height: 36px;
    padding: 0 16px;
    border-radius: var(--id-r-md);
    font: 650 14px var(--id-font);
    border: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background .12s, border-color .12s, color .12s;
}
.btn-primary {
    background: var(--id-accent);
    color: var(--id-on-accent);
    border: 1px solid var(--id-accent);
}
.btn-primary:hover  { background: var(--id-accent-hover); }
.btn-primary:active { background: var(--id-accent-press); }
.btn-outline {
    background: transparent;
    color: var(--id-ink);
    border: 1px solid rgba(255,255,255,.28);
}
.btn-outline:hover { border-color: rgba(255,255,255,.6); }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-ghost {
    background: none;
    color: var(--id-accent);
    border: 0;
    padding: 0;
    font-weight: 650;
}
.btn-ghost:hover { color: var(--id-accent-hover); }
.btn-lg { height: 44px; padding: 0 22px; font-size: 15px; }

/* --- containers --------------------------------------------- */
.container,
.container-fluid {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 48px;
    position: relative;
    z-index: 1;
}

/* --- cards --------------------------------------------------- */
.card {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    color: var(--id-ink);
    box-shadow: none !important;
    transition: border-color .12s, background .12s;
}
.card:hover { border-color: var(--id-line-strong); background: var(--id-plate-hover); }
.card-header,
.card-footer {
    background: transparent;
    border-color: var(--id-line);
    color: var(--id-ink-2);
}

/* --- forms --------------------------------------------------- */
.form-control,
.form-select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
textarea {
    background: var(--id-recess);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-md);
    color: var(--id-ink);
    height: 40px;
    padding: 0 14px;
    font-size: 14px;
    transition: border-color .12s, box-shadow .12s;
}
textarea { height: auto; padding: 12px 14px; }
.form-control:focus,
.form-select:focus,
input:focus,
textarea:focus {
    outline: none;
    border-color: var(--id-accent);
    box-shadow: 0 0 0 2px var(--id-accent);
}
.form-control::placeholder,
input::placeholder,
textarea::placeholder { color: var(--id-mute); }
.form-label {
    color: var(--id-ink-2);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

/* --- tables -------------------------------------------------- */
.table {
    color: var(--id-ink-2);
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-md);
    overflow: hidden;
    --bs-table-bg: transparent;
    --bs-table-color: var(--id-ink-2);
    --bs-table-border-color: var(--id-line);
    --bs-table-striped-bg: rgba(255,255,255,.02);
    --bs-table-striped-color: var(--id-ink-2);
    --bs-table-hover-bg: rgba(255,255,255,.04);
    --bs-table-hover-color: var(--id-ink);
}
.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--id-line);
    color: var(--id-ink-2);
}
.table thead th {
    color: var(--id-mute);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--id-line-strong);
    background: var(--id-recess);
}

/* --- alerts / badges --------------------------------------- */
.alert {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-md);
    color: var(--id-ink-2);
    padding: 12px 16px;
}
.alert-success { border-color: rgba(118,185,0,.5); color: var(--id-ink); background: rgba(118,185,0,.08); }
.alert-error,
.alert-danger  { border-color: rgba(229,32,32,.5);  color: var(--id-ink); background: rgba(229,32,32,.08); }
.alert-warning { border-color: rgba(232,184,0,.5);  color: var(--id-ink); background: rgba(232,184,0,.08); }
.alert-info    { border-color: rgba(59,107,255,.5); color: var(--id-ink); background: rgba(59,107,255,.08); }

.badge {
    height: 22px;
    padding: 0 8px;
    border-radius: var(--id-r-sm);
    font: 600 11px var(--id-font);
    display: inline-flex;
    align-items: center;
    background: var(--id-plate-hover);
    color: var(--id-ink-2);
    border: 1px solid var(--id-line);
}
.badge.bg-primary,
.badge.id-grn {
    background: var(--id-accent);
    color: var(--id-on-accent);
    border-color: var(--id-accent);
}
.badge.id-blu { background: var(--id-info);   color: #fff; border-color: var(--id-info); }
.badge.id-pur { background: var(--id-avail);  color: #fff; border-color: var(--id-avail); }
.badge.id-out { background: transparent; color: var(--id-ink-2); border-color: var(--id-line-strong); }

/* --- hero / search ----------------------------------------- */
.id-hero {
    padding: 88px 0 28px;
    text-align: center;
    position: relative;
}
.id-hero h1 {
    font: 700 52px/1.12 var(--id-font);
    letter-spacing: -.03em;
    color: var(--id-ink);
    max-width: 18ch;
    margin: 0 auto 28px;
}
.id-hero h1 span { color: var(--id-accent); }
.id-search-hero {
    margin: 0 auto;
    max-width: 680px;
    height: 52px;
    background: var(--id-recess);
    border: 1px solid var(--id-line-strong);
    border-radius: var(--id-r-md);
    display: flex;
    align-items: center;
    padding: 6px 6px 6px 18px;
    gap: 12px;
    transition: border-color .12s;
}
.id-search-hero:focus-within { border-color: var(--id-accent); }
.id-search-hero input {
    flex: 1;
    background: transparent;
    border: 0;
    outline: none;
    color: var(--id-ink);
    font-size: 16px;
    height: auto;
    padding: 0;
}
.id-search-hero input::placeholder { color: var(--id-mute); }
.id-search-hero button.sq {
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 8px;
    background: var(--id-accent);
    color: var(--id-on-accent);
    display: grid;
    place-items: center;
    cursor: pointer;
    flex-shrink: 0;
}
.id-search-hero button.sq:hover { background: var(--id-accent-hover); }
.id-search-hero button.sq svg { stroke: currentColor; }

.id-banner {
    margin: 28px auto 0;
    max-width: 920px;
    min-height: 92px;
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 18px;
}
.id-banner h2 { font-size: 18px; font-weight: 650; color: var(--id-ink); margin: 0; }
.id-banner p  { font-size: 13px; color: var(--id-ink-2); margin: 4px 0 0; max-width: 46ch; }

/* --- dual row-card list ------------------------------------ */
.id-dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    padding: 56px 0 12px;
}
.id-col-h {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
    gap: 12px;
}
.id-col-h h3 { font-size: 22px; font-weight: 650; color: var(--id-ink); margin: 0; }
.id-col-h p  { color: var(--id-ink-2); font-size: 14px; margin: 4px 0 0; }
.id-row-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    padding: 12px 14px;
    margin-bottom: 8px;
    transition: border-color .12s, background .12s;
}
.id-row-card:hover { border-color: var(--id-line-strong); background: var(--id-plate-hover); }
.id-row-card .id-av {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #1a1e1a;
    display: grid;
    place-items: center;
    font: 700 11px var(--id-mono);
    color: var(--id-accent);
    flex-shrink: 0;
}
.id-row-card .id-grow { flex: 1; min-width: 0; }
.id-row-card .id-meta { font-size: 11px; color: var(--id-mute); line-height: 1.2; }
.id-row-card .id-name { font-size: 15px; font-weight: 650; color: var(--id-ink); margin-top: 2px; line-height: 1.3; }
.id-row-card .id-plus { color: var(--id-mute); font-size: 12px; margin-left: 6px; }
.id-btn-wide {
    width: 100%;
    height: 44px;
    justify-content: center;
    margin-top: 12px;
    background: transparent;
    color: var(--id-ink);
    border: 1px solid var(--id-accent);
    border-radius: var(--id-r-md);
    font-weight: 650;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.id-btn-wide:hover { background: rgba(118,185,0,.08); }

/* --- stats plates ------------------------------------------ */
.id-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding: 28px 0 8px;
}
.id-stat {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    padding: 18px 20px;
}
.id-stat b {
    display: block;
    font: 700 28px var(--id-font);
    color: var(--id-accent);
    line-height: 1.1;
}
.id-stat span {
    font-size: 12px;
    color: var(--id-mute);
    margin-top: 6px;
    display: block;
}

/* --- section frame ----------------------------------------- */
.id-section { padding: 56px 0; border-top: 1px solid var(--id-line); position: relative; z-index: 1; }
.id-sh {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 22px;
    gap: 20px;
}
.id-sh h2 { font: 700 28px var(--id-font); letter-spacing: -.02em; line-height: 1.15; margin: 0; color: var(--id-ink); }
.id-sh .id-sub { color: var(--id-mute); font-size: 14px; margin: 6px 0 0; max-width: 56ch; line-height: 1.5; }
.id-eyebrow {
    font: 600 11px var(--id-mono);
    color: var(--id-accent);
    letter-spacing: .12em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

/* --- grids -------------------------------------------------- */
.id-g3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.id-g2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.id-g4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.id-card {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    padding: 18px;
    min-height: 178px;
    display: flex;
    flex-direction: column;
    transition: border-color .12s;
}
.id-card:hover { border-color: var(--id-line-strong); }
.id-card h3 { font: 650 16px var(--id-font); color: var(--id-ink); margin: 0; line-height: 1.3; }
.id-card p  { margin: 8px 0 0; font-size: 14px; color: var(--id-ink-2); line-height: 1.45;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.id-card-foot {
    margin-top: auto;
    padding-top: 14px;
    display: flex;
    justify-content: space-between;
    color: var(--id-mute);
    font-size: 12px;
    align-items: center;
    border-top: 1px solid var(--id-line);
}

/* --- footer ------------------------------------------------ */
.site-footer,
.app-footer {
    background: transparent !important;
    border-top: 1px solid var(--id-line);
    padding: 36px 0 24px;
    color: var(--id-mute);
    font-size: 12px;
    line-height: 1.55;
    position: relative;
    z-index: 1;
}
.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 28px;
    margin-bottom: 22px;
}
.footer-section h4 {
    color: var(--id-ink);
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 650;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { padding: 3px 0; }
.footer-links a { color: var(--id-mute); transition: color .12s; }
.footer-links a:hover { color: var(--id-ink); }
.footer-logo { height: 28px; width: auto; margin-bottom: 12px; filter: brightness(0) invert(1); }
.footer-bottom { border-top: 1px solid var(--id-line); padding-top: 14px; color: var(--id-mute-dim); }

/* --- breadcrumb ------------------------------------------- */
.breadcrumb {
    background: transparent !important;
    color: var(--id-mute);
    font-size: 13px;
    padding: 12px 0;
}
.breadcrumb-item a { color: var(--id-ink-2); }
.breadcrumb-item a:hover { color: var(--id-accent); }
.breadcrumb-item.active { color: var(--id-ink); }
.breadcrumb-separator { color: var(--id-mute-dim); margin: 0 6px; }

/* --- pagination ------------------------------------------- */
.pagination {
    display: flex;
    gap: 6px;
    margin: 16px 0;
}
.page-item .page-link {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    color: var(--id-ink-2);
    border-radius: var(--id-r-md);
    padding: 6px 12px;
    font-size: 13px;
}
.page-item.active .page-link {
    background: var(--id-accent);
    border-color: var(--id-accent);
    color: var(--id-on-accent);
}
.page-item.disabled .page-link {
    background: transparent;
    color: var(--id-mute-dim);
}
.page-item .page-link:hover { border-color: var(--id-line-strong); }

/* --- sidebar (logged-in shell) ---------------------------- */
.app-sidebar {
    background: var(--id-canvas-mid) !important;
    border-right: 1px solid var(--id-line);
    color: var(--id-ink-2);
}
.sidebar-link {
    color: var(--id-ink-2) !important;
    border-radius: var(--id-r-md);
}
.sidebar-link:hover { background: var(--id-plate-hover); color: var(--id-ink) !important; }
.sidebar-link.active {
    background: rgba(118,185,0,.08) !important;
    color: var(--id-accent) !important;
}
.sidebar-section-label {
    color: var(--id-mute);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
}
.sidebar-divider { border-top: 1px solid var(--id-line); }

/* --- top bar search (logged-in) -------------------------- */
.topbar-search {
    background: var(--id-recess);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-md);
    color: var(--id-mute);
}
.topbar-search-input { color: var(--id-ink); }
.topbar-search-input::placeholder { color: var(--id-mute); }
.topbar-search:focus-within { border-color: var(--id-accent); }
.topbar-icon-btn {
    background: transparent;
    border: 1px solid var(--id-line);
    color: var(--id-ink-2);
    border-radius: var(--id-r-md);
}
.topbar-icon-btn:hover { border-color: var(--id-line-strong); color: var(--id-ink); }
.topbar-dropdown {
    background: var(--id-plate);
    border: 1px solid var(--id-line-strong);
    border-radius: var(--id-r-md);
    color: var(--id-ink-2);
}
.topbar-dropdown-item { color: var(--id-ink-2); }
.topbar-dropdown-item:hover { background: var(--id-plate-hover); color: var(--id-ink); }
.topbar-avatar {
    background: var(--id-accent);
    color: var(--id-on-accent);
    font-weight: 700;
}

/* --- modal / dialog -------------------------------------- */
.modal-content {
    background: var(--id-plate);
    border: 1px solid var(--id-line-strong);
    border-radius: var(--id-r-lg);
    color: var(--id-ink);
}
.modal-header,
.modal-footer { border-color: var(--id-line); }
.btn-close { filter: invert(1) brightness(2); }

/* --- announcement banner (dismissable strip) ------------- */
.announcement-bar {
    background: rgba(118,185,0,.10);
    border-bottom: 1px solid rgba(118,185,0,.4);
    color: var(--id-ink);
    font-size: 13px;
    padding: 8px 16px;
    text-align: center;
    position: relative;
    z-index: 30;
}
.announcement-bar a { color: var(--id-accent); font-weight: 600; }
.announcement-close { color: var(--id-mute); background: transparent; border: 0; font-size: 16px; cursor: pointer; }

/* --- scroll-to-top -------------------------------------- */
.scroll-to-top {
    background: var(--id-accent);
    color: var(--id-on-accent);
    border: 0;
    border-radius: var(--id-r-md);
    box-shadow: none;
}
.scroll-to-top:hover { background: var(--id-accent-hover); }

/* --- utility text colors -------------------------------- */
.text-muted { color: var(--id-mute) !important; }
.text-primary,
a.text-primary { color: var(--id-accent) !important; }
.bg-light,
.bg-white { background: var(--id-plate) !important; color: var(--id-ink) !important; }
.bg-dark { background: var(--id-canvas) !important; color: var(--id-ink) !important; }
hr { border-color: var(--id-line); opacity: 1; }

/* --- responsive ------------------------------------------ */
@media (max-width: 1024px) {
    .container,
    .container-fluid,
    .navbar .container { padding-left: 16px; padding-right: 16px; }
    .id-dual, .id-g3, .id-g2, .id-g4, .id-stats, .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    .id-hero h1 { font-size: 36px; }
    .navbar-toggle { display: flex; flex-direction: column; gap: 4px; }
    .navbar-menu { display: none; }
    .navbar-menu.active { display: block; position: absolute; top: 64px; left: 0; right: 0;
        background: var(--id-canvas); border-bottom: 1px solid var(--id-line); padding: 16px; }
    .navbar-menu.active .navbar-nav { flex-direction: column; align-items: flex-start; gap: 0; }
    .navbar-menu.active .navbar-nav a { height: 44px; width: 100%; border-bottom: 1px solid var(--id-line); }
    .id-banner, .id-hero { padding: 24px 0; }
    .id-banner { flex-direction: column; align-items: flex-start; padding: 18px; }
}
@media (max-width: 720px) {
    .id-dual, .id-g3, .id-g2, .id-g4, .id-stats, .footer-content {
        grid-template-columns: 1fr;
    }
    .id-hero { padding: 48px 0 16px; }
    .id-hero h1 { font-size: 30px; }
}

/* --- reduced motion -------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    #id-net, .id-net { display: none; }
    * { animation: none !important; transition: none !important; }
}

/* =================================================================
   Compatibility layer: old purple-system class names → instrument-dark
   Keeps pages that haven't been migrated looking correct on dark canvas
   ================================================================= */

/* Token aliases — purple system tokens that pages still reference */
:root {
    --radius-sm:       var(--id-r-sm);
    --radius-md:       var(--id-r-md);
    --radius-lg:       var(--id-r-lg);
    --shadow-sm:       none;
    --shadow-md:       none;
    --transition-fast: .12s;
    --brand-50:  rgba(118,185,0,.04);
    --brand-100: rgba(118,185,0,.10);
    --brand-200: rgba(118,185,0,.18);
    --brand-300: rgba(118,185,0,.34);
    --brand-400: rgba(118,185,0,.50);
    --brand-500: #5A8D00;
    --brand-600: #76B900;
    --brand-700: #8AD400;
    --brand-800: #9DE800;
    --brand-900: #B2FF00;
    --slate-50:  var(--id-canvas);
    --slate-100: var(--id-recess);
    --slate-200: var(--id-line);
    --slate-300: var(--id-line-strong);
    --slate-400: var(--id-mute-dim);
    --slate-500: var(--id-mute);
    --slate-600: var(--id-ink-2);
    --slate-700: var(--id-ink);
    --text-muted: var(--id-mute);
    --text-body:  var(--id-ink-2);
}

/* ── Dashboard classes ─────────────────────────────────────────── */
.dashboard-section {
    padding: 24px 0 12px;
    position: relative;
    z-index: 1;
}
.dashboard-page-title {
    font: 700 26px/1.15 var(--id-font);
    letter-spacing: -.022em;
    color: var(--id-ink);
    margin: 0 0 6px;
}
.dashboard-subtitle {
    font-size: 14px;
    color: var(--id-mute);
    margin: 0;
}
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding: 16px 0;
    position: relative;
    z-index: 1;
}
.stat-card {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    padding: 18px 20px;
    transition: border-color .12s;
}
.stat-card:hover { border-color: var(--id-line-strong); }
.stat-value {
    display: block;
    font: 700 28px/1 var(--id-font);
    color: var(--id-accent);
    font-variant-numeric: tabular-nums;
}
.stat-label {
    display: block;
    font-size: 12px;
    color: var(--id-mute);
    margin-top: 6px;
}
.gam-profile-card {
    background: var(--id-plate) !important;
    border: 1px solid var(--id-line) !important;
    border-radius: var(--id-r-lg);
    padding: 24px;
    margin: 16px 0;
    color: var(--id-ink);
    position: relative;
    z-index: 1;
}
.continue-learning-card {
    background: var(--id-plate);
    border: 1px solid rgba(118,185,0,.36);
    border-radius: var(--id-r-lg);
    padding: 18px 20px;
    display: flex;
    gap: 16px;
    align-items: center;
    margin: 12px 0;
    transition: border-color .12s;
    position: relative;
    z-index: 1;
}
.continue-learning-card:hover { border-color: var(--id-accent); }
.continue-learning-label {
    font: 600 10px var(--id-mono);
    color: var(--id-accent);
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: 4px;
}
.continue-learning-title {
    font: 650 16px/1.28 var(--id-font);
    color: var(--id-ink);
    margin-bottom: 8px;
}
.continue-learning-thumb {
    width: 64px;
    height: 64px;
    border-radius: 10px;
    object-fit: cover;
    background: var(--id-recess);
    display: flex;
    align-items: center;
    justify-content: center;
    font: 700 20px var(--id-font);
    color: var(--id-accent);
    flex-shrink: 0;
    overflow: hidden;
}
.enrolled-courses-section,
.recommended-section,
.activity-section {
    position: relative;
    z-index: 1;
    margin-bottom: 28px;
}
.section-title {
    font: 650 18px/1.2 var(--id-font);
    color: var(--id-ink);
    margin: 0 0 14px;
}
.enrolled-course-card {
    background: var(--id-plate) !important;
    border-radius: var(--id-r-lg) !important;
    box-shadow: none !important;
    border: 1px solid var(--id-line) !important;
    padding: 1.25rem;
    display: flex;
    gap: 1.25rem;
    align-items: center;
    transition: border-color .12s;
    margin-bottom: 10px;
}
.enrolled-course-card:hover { border-color: var(--id-accent) !important; }
.course-thumb-small {
    width: 64px;
    height: 64px;
    border-radius: var(--id-r-md);
    object-fit: cover;
    background: var(--id-recess);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--id-accent);
    font-size: 1.25rem;
    flex-shrink: 0;
}
.progress-bar {
    height: 5px;
    background: var(--id-recess);
    border-radius: 3px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--id-accent);
    border-radius: 3px;
}
.progress-text { font-size: 0.7rem; color: var(--id-mute); margin-top: 3px; }

/* ── Courses catalog classes ───────────────────────────────────── */
.courses-hero {
    padding: 56px 0 24px;
    text-align: center;
    position: relative;
    z-index: 1;
}
.courses-hero h1 {
    font: 700 44px/1.1 var(--id-font);
    letter-spacing: -.028em;
    color: var(--id-ink);
    margin: 0 auto 14px;
}
.courses-hero-bg { display: none; }
.courses-hero-inner .lead { color: var(--id-ink-2); font-size: 16px; }
.badge-pill {
    height: 24px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(118,185,0,.12);
    color: var(--id-accent);
    border: 1px solid rgba(118,185,0,.3);
    font: 600 10px var(--id-mono);
    letter-spacing: .1em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    margin-bottom: 14px;
}
.catalog-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 16px 0;
    border-bottom: 1px solid var(--id-line);
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}
.catalog-search { position: relative; flex: 1; min-width: 220px; }
.catalog-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--id-mute);
    pointer-events: none;
}
.catalog-search input { width: 100%; padding-left: 36px; }
.catalog-filter-btn {
    height: 34px;
    padding: 0 14px;
    border-radius: var(--id-r-md);
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    color: var(--id-ink-2);
    font: 500 13px var(--id-font);
    cursor: pointer;
    transition: border-color .12s, color .12s;
}
.catalog-filter-btn:hover { border-color: var(--id-line-strong); color: var(--id-ink); }
.catalog-filter-btn.active {
    border-color: var(--id-accent);
    color: var(--id-ink);
    background: rgba(118,185,0,.08);
}
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
    z-index: 1;
}

/* ── BEM course card (course-card--v2) ────────────────────────── */
.course-card {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: border-color .15s, box-shadow .15s;
}
.course-card:hover {
    border-color: var(--id-accent);
    box-shadow: 0 4px 24px rgba(118,185,0,.1);
}
.course-card__thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--id-recess);
    overflow: hidden;
    flex-shrink: 0;
}
.course-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.course-card__thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--id-recess) 0%, rgba(118,185,0,.08) 100%);
    font: 700 28px/1 var(--id-font-mono);
    color: var(--id-accent);
    letter-spacing: .05em;
}
.course-card__badges {
    position: absolute;
    top: 10px;
    left: 10px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.course-badge {
    font: 600 10px/1 var(--id-font);
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 3px;
}
.course-badge--new      { background: var(--id-accent); color: #000; }
.course-badge--popular  { background: rgba(255,180,0,.9); color: #000; }
.course-badge--updated  { background: rgba(80,180,255,.9); color: #000; }
.course-card__body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 8px;
}
.course-card__meta-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.course-card__difficulty {
    font: 600 10px/1 var(--id-font);
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 3px;
    border: 1px solid transparent;
}
.course-card__difficulty--beginner    { border-color: rgba(118,185,0,.4);  color: var(--id-accent); }
.course-card__difficulty--intermediate{ border-color: rgba(255,180,0,.4);  color: #f5a623; }
.course-card__difficulty--advanced    { border-color: rgba(255,90,90,.4);   color: #f55555; }
.course-card__duration {
    font-size: 12px;
    color: var(--id-mute);
    margin-left: auto;
}
.course-card__duration i { margin-right: 4px; }
.course-card__title {
    font: 650 15px/1.3 var(--id-font);
    color: var(--id-ink);
    margin: 0;
}
.course-card__desc {
    font-size: 13px;
    color: var(--id-ink-2);
    line-height: 1.5;
    margin: 0;
    flex: 1;
}
.course-card__stats {
    font-size: 12px;
    color: var(--id-mute);
}
.course-card__stats i { margin-right: 4px; }
.course-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
    padding: 8px 14px;
    font: 600 13px/1 var(--id-font);
    color: var(--id-accent);
    background: rgba(118,185,0,.08);
    border: 1px solid rgba(118,185,0,.3);
    border-radius: var(--id-r-sm);
    text-decoration: none;
    transition: background .12s, border-color .12s;
    align-self: flex-start;
}
.course-card__btn:hover {
    background: rgba(118,185,0,.16);
    border-color: var(--id-accent);
    color: var(--id-accent);
}

.course-card-item {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    padding: 18px;
    display: flex;
    flex-direction: column;
    transition: border-color .12s;
}
.course-card-item:hover { border-color: var(--id-line-strong); }
.course-card-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--id-r-md);
    object-fit: cover;
    background: var(--id-recess);
    margin-bottom: 12px;
}
.course-card-title {
    font: 650 15px/1.3 var(--id-font);
    color: var(--id-ink);
    margin: 0 0 6px;
}
.course-card-meta { font-size: 12px; color: var(--id-mute); }

/* ── Auth / public page classes ───────────────────────────────── */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 16px 0;
    position: relative;
    z-index: 1;
    gap: 0;
}
.auth-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding-bottom: 48px;
}
.auth-card {
    background: var(--id-plate);
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-lg);
    padding: 36px 40px;
    width: 100%;
    max-width: 440px;
}
.legal-disclaimer {
    width: 100%;
    background: rgba(0,0,0,.25);
    border-top: 1px solid var(--id-line);
    padding: 16px 24px;
    margin-top: auto;
}
.legal-disclaimer-inner {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.legal-disclaimer-icon {
    color: var(--id-mute);
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 2px;
}
.legal-disclaimer p {
    font-size: 11px;
    color: var(--id-mute);
    line-height: 1.6;
    margin: 0;
}
.auth-header {
    text-align: center;
    margin-bottom: 28px;
}
.auth-header h1 {
    font: 700 26px/1.15 var(--id-font);
    letter-spacing: -.02em;
    color: var(--id-ink);
    margin: 0 0 6px;
}
.auth-header p {
    font-size: 14px;
    color: var(--id-mute);
    margin: 0;
}
.auth-logo {
    display: block;
    height: 40px;
    width: auto;
    margin: 0 auto 20px;
    filter: brightness(0) invert(1);
}
.auth-form { display: flex; flex-direction: column; gap: 18px; }
.auth-footer {
    margin-top: 22px;
    text-align: center;
}
.auth-footer p {
    font-size: 13px;
    color: var(--id-mute);
    margin: 6px 0;
}
.auth-footer a { color: var(--id-accent); }
.auth-footer a:hover { color: var(--id-accent-hover); }
.auth-title {
    font: 700 26px/1.15 var(--id-font);
    letter-spacing: -.02em;
    color: var(--id-ink);
    margin: 0 0 6px;
}
.auth-subtitle { font-size: 14px; color: var(--id-mute); margin: 0 0 28px; }
.auth-link { color: var(--id-accent); }
.auth-link:hover { color: var(--id-accent-hover); }

/* ── App sidebar/topbar addons ─────────────────────────────────── */
.app-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 48px;
    gap: 20px;
    flex-wrap: wrap;
}
.app-footer-links { display: flex; gap: 18px; }
.app-footer-links a { color: var(--id-mute); font-size: 12px; }
.app-footer-links a:hover { color: var(--id-ink); }
.app-main {
    margin-left: 240px;
    padding: 24px;
    min-height: calc(100vh - 64px);
    transition: margin-left .22s;
    position: relative;
    z-index: 1;
}
body.sidebar-collapsed .app-main { margin-left: 64px; }
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 16px;
    background: var(--id-accent);
    color: var(--id-on-accent);
    padding: 8px 16px;
    border-radius: var(--id-r-md);
    font-weight: 600;
    z-index: 200;
    transition: top .12s;
}
.skip-to-content:focus { top: 16px; }

/* ── Sidebar header/menu detail ────────────────────────────────── */
.sidebar-header {
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--id-line);
}
.sidebar-logo, .sidebar-logo-img {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(1);
}
.sidebar-menu { flex: 1; padding: 12px 10px; overflow-y: auto; }
.sidebar-nav-list { list-style: none; margin: 0; padding: 0; }
.sidebar-nav-list li { margin-bottom: 2px; }
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--id-r-md);
    font-size: 14px;
    font-weight: 500;
}
.sidebar-link i { width: 18px; text-align: center; flex-shrink: 0; }
.sidebar-footer {
    border-top: 1px solid var(--id-line);
    padding: 10px;
}

/* Sidebar toggle btn */
.sidebar-toggle-btn {
    background: transparent;
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-md);
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    color: var(--id-ink-2);
    cursor: pointer;
    margin-right: 12px;
    transition: border-color .12s;
}
.sidebar-toggle-btn:hover { border-color: var(--id-line-strong); color: var(--id-ink); }
.topbar-left, .topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}
.topbar-left { flex: 1; }
.app-topbar {
    display: flex;
    align-items: center;
    padding: 0 24px;
}
.topbar-username { font-size: 13px; font-weight: 600; color: var(--id-ink); margin-left: 8px; }
.topbar-user-btn {
    display: flex;
    align-items: center;
    background: transparent;
    border: 1px solid var(--id-line);
    border-radius: var(--id-r-md);
    height: 34px;
    padding: 0 10px;
    cursor: pointer;
    transition: border-color .12s;
}
.topbar-user-btn:hover { border-color: var(--id-line-strong); }
.topbar-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--id-danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    border-radius: 999px;
    padding: 1px 5px;
    min-width: 17px;
    text-align: center;
}
.topbar-action { position: relative; }
.topbar-chevron { margin-left: 6px; font-size: 10px; color: var(--id-mute); }
.topbar-dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid var(--id-line);
    font-size: 13px;
    font-weight: 600;
}
.topbar-dropdown-action { color: var(--id-accent); font-size: 12px; }
.topbar-dropdown-body { max-height: 360px; overflow-y: auto; }
.topbar-dropdown-empty { padding: 16px 14px; color: var(--id-mute); font-size: 13px; text-align: center; }
.topbar-notification-item { padding: 10px 14px; border-bottom: 1px solid var(--id-line); }
.topbar-notification-item.unread { background: rgba(118,185,0,.05); }
.notification-msg { font-size: 13px; color: var(--id-ink-2); line-height: 1.4; }
.notification-time { font-size: 11px; color: var(--id-mute); margin-top: 3px; }
.topbar-dropdown-divider { border-top: 1px solid var(--id-line); margin: 4px 0; }
.topbar-dropdown-item-btn {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    cursor: pointer;
    font: 500 13px var(--id-font);
}
.topbar-dropdown-right { right: 0; left: auto; }
.topbar-search-input {
    background: transparent;
    border: none;
    outline: none;
    flex: 1;
    padding-left: 4px;
}
.topbar-search { display: flex; align-items: center; padding: 0 10px; max-width: 360px; }
.topbar-search-icon { color: var(--id-mute); margin-right: 6px; font-size: 13px; }

/* Mobile sidebar */
@media (max-width: 1024px) {
    .app-sidebar {
        position: fixed;
        top: 64px;
        left: -240px;
        height: calc(100vh - 64px);
        width: 240px;
        transition: left .22s;
        z-index: 45;
    }
    .app-sidebar.mobile-open { left: 0; }
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,.5);
        z-index: 44;
        display: none;
    }
    .sidebar-overlay.visible { display: block; }
    .app-main { margin-left: 0; }
    body.sidebar-collapsed .app-main { margin-left: 0; }
    .courses-grid { grid-template-columns: 1fr 1fr; }
    .dashboard-stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
    .courses-grid, .dashboard-stats { grid-template-columns: 1fr; }
    .app-main { padding: 16px; }
    .auth-card { padding: 24px 20px; }
}

/* hidden utility used by JS toggles */
.hidden { display: none !important; }