/* ════════════════════════════════════════════════════════════
   DESIGN TOKENS — DARK THEME
════════════════════════════════════════════════════════════ */
:root {
    --sidebar-w:   260px;
    --topbar-h:    58px;

    /* colors */
    --bg:          #080d1a;
    --sidebar-bg:  #050810;
    --surface:     #0e1424;
    --surface2:    #131a2f;
    --surface3:    #192038;
    --border:      #1c253e;
    --border2:     #253050;

    --accent:      #4f8aff;
    --accent2:     #3570e8;
    --accent-glow: rgba(79,138,255,0.18);

    --green:       #22d37c;
    --red:         #ff4c6a;
    --yellow:      #f5a623;
    --orange:      #ff7c50;
    --purple:      #a78bfa;

    --text:        #dde5f8;
    --text2:       #7a90b8;
    --text3:       #3a4f72;
    --text4:       #1f2d4a;

    --mono:  'JetBrains Mono', monospace;
    --sans:  'Inter', system-ui, sans-serif;

    --radius:    6px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow:    0 8px 32px rgba(0,0,0,0.5);
    --shadow-sm: 0 2px 12px rgba(0,0,0,0.3);
}

/* ─── LIGHT THEME ─────────────────────────────────────────── */
[data-theme="light"] {
    --bg:          #f0f4fb;
    --sidebar-bg:  #ffffff;
    --surface:     #ffffff;
    --surface2:    #f5f7fc;
    --surface3:    #eaeff8;
    --border:      #dde4f0;
    --border2:     #ccd4e8;

    --accent:      #2563eb;
    --accent2:     #1d4ed8;
    --accent-glow: rgba(37,99,235,0.12);

    --green:       #059669;
    --red:         #dc2626;
    --yellow:      #d97706;
    --orange:      #ea580c;
    --purple:      #7c3aed;

    --text:        #0f172a;
    --text2:       #475569;
    --text3:       #94a3b8;
    --text4:       #cbd5e1;

    --shadow:    0 4px 24px rgba(0,0,0,0.08);
    --shadow-sm: 0 1px 6px rgba(0,0,0,0.06);
}

/* ════════════════════════════════════════════════════════════
   RESET & BASE
════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    min-height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s, color 0.3s;
}

/* ════════════════════════════════════════════════════════════
   LAYOUT
════════════════════════════════════════════════════════════ */
.layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ════════════════════════════════════════════════════════════
   SIDEBAR
════════════════════════════════════════════════════════════ */
.sidebar {
    width: var(--sidebar-w);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    z-index: 200;
    transition: transform 0.28s cubic-bezier(0.4,0,0.2,1), background 0.3s, border-color 0.3s;
}
.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* Brand */
.sidebar-brand {
    padding: 20px 18px 16px;
    display: flex;
    align-items: center;
    gap: 11px;
    border-bottom: 1px solid var(--border);
}
.brand-icon {
    width: 36px; height: 36px;
    background: var(--accent);
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 18px var(--accent-glow);
}
.brand-name {
    font-family: var(--mono);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
    display: block;
    line-height: 1.2;
}
.brand-ver {
    font-size: 0.62rem;
    color: var(--text3);
    letter-spacing: 0.08em;
    font-family: var(--mono);
    text-transform: uppercase;
}

/* University block */
.sidebar-uni {
    padding: 12px 18px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--surface);
}
.uni-logo-sm {
    width: 32px; height: 32px;
    border-radius: 6px;
    object-fit: contain;
    flex-shrink: 0;
    background: var(--surface2);
    padding: 2px;
}
.uni-info { min-width: 0; }
.uni-name-sm {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text2);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.uni-dept-sm {
    font-size: 0.6rem;
    color: var(--text3);
    display: block;
    margin-top: 1px;
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: 14px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-section-label {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text3);
    padding: 6px 8px 4px;
    margin-top: 6px;
    font-family: var(--mono);
}
.nav-section-label:first-child { margin-top: 0; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius);
    border: none;
    background: transparent;
    color: var(--text2);
    font-family: var(--sans);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    width: 100%;
    text-align: left;
    transition: all 0.15s;
    position: relative;
}
.nav-item svg { flex-shrink: 0; opacity: 0.6; transition: opacity 0.15s; }
.nav-item:hover {
    background: var(--surface2);
    color: var(--text);
}
.nav-item:hover svg { opacity: 0.9; }
.nav-item.active {
    background: var(--accent-glow);
    color: var(--accent);
    font-weight: 600;
}
.nav-item.active svg { opacity: 1; }
.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0; top: 20%; bottom: 20%;
    width: 3px;
    background: var(--accent);
    border-radius: 0 3px 3px 0;
}

.nav-divider {
    height: 1px;
    background: var(--border);
    margin: 8px 0;
}

/* Sidebar bottom */
.sidebar-bottom {
    padding: 14px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.server-status-row {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 10px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
}
.status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--text3);
    flex-shrink: 0;
    transition: background 0.3s, box-shadow 0.3s;
}
.status-dot.online { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.offline { background: var(--red); }
.status-label {
    flex: 1; min-width: 0;
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--text2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.status-os {
    font-family: var(--mono);
    font-size: 0.62rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.sidebar-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Language switch */
.lang-switch {
    display: flex;
    align-items: center;
    background: var(--surface2);
    border: 1px solid var(--border2);
    border-radius: 20px;
    padding: 2px;
    flex: 1;
}
.lang-btn {
    flex: 1;
    background: none; border: none;
    color: var(--text3);
    font-family: var(--mono); font-size: 0.68rem; font-weight: 700;
    cursor: pointer;
    padding: 4px 0;
    border-radius: 14px;
    transition: all 0.18s;
    letter-spacing: 0.06em;
    text-align: center;
}
.lang-btn.active { background: var(--accent); color: #fff; }
[data-theme="dark"] .lang-btn.active { color: #fff; }

/* Theme toggle */
.theme-btn {
    width: 34px; height: 34px;
    background: var(--surface2);
    border: 1px solid var(--border2);
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.18s;
    flex-shrink: 0;
}
.theme-btn:hover { border-color: var(--accent); background: var(--accent-glow); }

/* ════════════════════════════════════════════════════════════
   MAIN CONTENT AREA
════════════════════════════════════════════════════════════ */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100vh;
    overflow: hidden;
}

/* Topbar */
.topbar {
    height: var(--topbar-h);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 14px;
    flex-shrink: 0;
    background: var(--sidebar-bg);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s, border-color 0.3s;
}
.topbar-left { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.mobile-menu-btn {
    display: none;
    background: none; border: 1px solid var(--border2);
    border-radius: var(--radius);
    width: 34px; height: 34px;
    color: var(--text2);
    font-size: 16px;
    cursor: pointer;
    align-items: center; justify-content: center;
    transition: all 0.18s;
}
.mobile-menu-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text);
    font-family: var(--mono);
    letter-spacing: 0.02em;
}
.page-breadcrumb {
    font-size: 0.72rem;
    color: var(--text3);
    font-family: var(--mono);
}
.topbar-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

/* Content scroll area */
.content-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}
.content-scroll::-webkit-scrollbar { width: 5px; }
.content-scroll::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 5px; }

/* Tab content */
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeUp 0.2s ease both; }
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════════════════════════
   PAGE HEADER
════════════════════════════════════════════════════════════ */
.page-header {
    margin-bottom: 20px;
}
.page-header-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}
.page-header-sub {
    font-size: 0.8rem;
    color: var(--text2);
}

/* ════════════════════════════════════════════════════════════
   EXPLANATION CARDS
════════════════════════════════════════════════════════════ */
.explain-card {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border2);
    overflow: hidden;
    margin-bottom: 20px;
}
.explain-lang {
    padding: 16px 20px;
    display: flex;
    gap: 16px;
}
.explain-lang:first-child {
    background: rgba(79,138,255,0.06);
    border-bottom: 1px solid var(--border);
}
.explain-lang:last-child {
    background: rgba(79,138,255,0.03);
}
.explain-flag {
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 3px 7px;
    border-radius: 4px;
    background: var(--accent-glow);
    color: var(--accent);
    flex-shrink: 0;
    align-self: flex-start;
    margin-top: 2px;
    border: 1px solid rgba(79,138,255,0.2);
}
.explain-flag.tk {
    background: rgba(34,211,124,0.08);
    color: var(--green);
    border-color: rgba(34,211,124,0.2);
}
.explain-body { flex: 1; min-width: 0; }
.explain-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.explain-text {
    font-size: 0.78rem;
    color: var(--text2);
    line-height: 1.7;
}
.explain-text strong { color: var(--text); font-weight: 600; }
.explain-points {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.explain-point {
    font-size: 0.75rem;
    color: var(--text2);
    display: flex;
    gap: 8px;
    align-items: flex-start;
}
.explain-point::before {
    content: '▸';
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 1px;
}

/* ════════════════════════════════════════════════════════════
   CARDS / PANELS
════════════════════════════════════════════════════════════ */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
    transition: background 0.3s, border-color 0.3s;
}
.card + .card { /* no extra margin needed */ }

.card-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    background: var(--surface2);
}
.card-header-icon {
    width: 28px; height: 28px;
    background: var(--accent-glow);
    border: 1px solid rgba(79,138,255,0.2);
    border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.card-title {
    font-family: var(--mono);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
}
.card-desc {
    font-size: 0.72rem;
    color: var(--text3);
    margin-left: auto;
}
.card-body { padding: 18px 20px; }

/* ════════════════════════════════════════════════════════════
   DASHBOARD GRID
════════════════════════════════════════════════════════════ */
.dash-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}
.dash-stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: border-color 0.18s;
}
.dash-stat:hover { border-color: var(--border2); }
.dash-stat-icon {
    width: 32px; height: 32px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.dash-stat-icon.blue  { background: rgba(79,138,255,0.12); }
.dash-stat-icon.green { background: rgba(34,211,124,0.1); }
.dash-stat-icon.red   { background: rgba(255,76,106,0.1); }
.dash-stat-icon.yellow{ background: rgba(245,166,35,0.1); }
.dash-stat-val {
    font-family: var(--mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
}
.dash-stat-label {
    font-size: 0.72rem;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.dash-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.dash-feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}
.dash-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius);
    background: var(--surface2);
    border: 1px solid var(--border);
    transition: border-color 0.18s;
}
.dash-feature:hover { border-color: var(--border2); }
.feat-icon {
    width: 32px; height: 32px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.feat-icon.blue  { background: rgba(79,138,255,0.1); }
.feat-icon.green { background: rgba(34,211,124,0.1); }
.feat-icon.red   { background: rgba(255,76,106,0.1); }
.feat-icon.purple{ background: rgba(167,139,250,0.1); }
.feat-icon.yellow{ background: rgba(245,166,35,0.1); }
.feat-icon.orange{ background: rgba(255,124,80,0.1); }
.feat-content { flex: 1; min-width: 0; }
.feat-name { font-size: 0.82rem; font-weight: 600; color: var(--text); margin-bottom: 2px; }
.feat-desc { font-size: 0.73rem; color: var(--text2); line-height: 1.5; }

/* ════════════════════════════════════════════════════════════
   FORM CONTROLS
════════════════════════════════════════════════════════════ */
.form-grid {
    display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end;
}
.input-group {
    display: flex; flex-direction: column; gap: 5px;
    flex: 1; min-width: 160px;
}
.input-label {
    font-size: 0.66rem; color: var(--text3);
    text-transform: uppercase; letter-spacing: 0.09em;
    font-family: var(--mono); font-weight: 600;
}
input[type="text"], input[type="number"], select, .search-input {
    background: var(--bg);
    border: 1px solid var(--border2);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--mono);
    font-size: 0.8rem;
    padding: 9px 12px;
    outline: none;
    width: 100%;
    transition: border-color 0.18s, box-shadow 0.18s, background 0.3s, color 0.3s;
}
input:focus, select:focus, .search-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
input::placeholder { color: var(--text3); }
select {
    cursor: pointer; appearance: none; -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%237a90b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}
[data-theme="light"] select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23475569' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 9px 16px;
    border: none; border-radius: var(--radius);
    font-family: var(--mono); font-size: 0.78rem; font-weight: 600;
    cursor: pointer; letter-spacing: 0.03em;
    transition: all 0.15s; white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-danger  { background: rgba(255,76,106,0.12); color: var(--red); border: 1px solid rgba(255,76,106,0.3); }
.btn-danger:hover { background: rgba(255,76,106,0.2); }
.btn-success { background: rgba(34,211,124,0.1); color: var(--green); border: 1px solid rgba(34,211,124,0.25); }
.btn-success:hover { background: rgba(34,211,124,0.18); }
.btn-ghost   { background: transparent; color: var(--text2); border: 1px solid var(--border2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 7px 13px; font-size: 0.74rem; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ════════════════════════════════════════════════════════════
   TOOLBAR
════════════════════════════════════════════════════════════ */
.toolbar {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--surface2);
}
.backend-tag {
    padding: 4px 10px;
    background: var(--accent-glow);
    border: 1px solid rgba(79,138,255,0.2);
    border-radius: var(--radius);
    font-family: var(--mono); font-size: 0.68rem; color: var(--accent);
}
.backend-tag.hidden { display: none; }
.search-input { flex: 1; min-width: 140px; max-width: 220px; }

/* ════════════════════════════════════════════════════════════
   SCAN SUMMARY BAR
════════════════════════════════════════════════════════════ */
.scan-summary {
    display: flex; flex-wrap: wrap; align-items: center;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
}
.scan-summary.hidden { display: none; }
.summary-item {
    display: flex; flex-direction: column; align-items: center;
    gap: 1px; padding: 10px 20px;
}
.s-val { font-family: var(--mono); font-size: 1.3rem; font-weight: 700; color: var(--text); }
.s-val.open     { color: var(--green); }
.s-val.closed   { color: var(--text3); }
.s-val.filtered { color: var(--yellow); }
.s-label { font-size: 0.62rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.09em; }
.summary-div { width: 1px; height: 30px; background: var(--border); }

/* Filter bar */
.filter-bar {
    display: flex; gap: 6px; padding: 10px 20px;
    border-bottom: 1px solid var(--border);
    overflow-x: auto; scrollbar-width: none;
}
.filter-bar.hidden { display: none; }
.filter-bar::-webkit-scrollbar { display: none; }
.filter-btn {
    padding: 4px 13px;
    background: transparent;
    border: 1px solid var(--border2); border-radius: 20px;
    color: var(--text2); font-family: var(--mono); font-size: 0.68rem;
    cursor: pointer; transition: all 0.15s; text-transform: uppercase;
    letter-spacing: 0.06em; white-space: nowrap;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); }

/* ════════════════════════════════════════════════════════════
   TABLES
════════════════════════════════════════════════════════════ */
.results-area { overflow-x: auto; min-height: 120px; }
.data-table { width: 100%; border-collapse: collapse; min-width: 480px; }
.data-table th {
    padding: 9px 14px;
    text-align: left;
    font-family: var(--mono); font-size: 0.63rem; font-weight: 600;
    color: var(--text3); text-transform: uppercase; letter-spacing: 0.1em;
    border-bottom: 1px solid var(--border);
    background: var(--surface2);
    white-space: nowrap;
}
.data-table td {
    padding: 9px 14px;
    font-family: var(--mono); font-size: 0.77rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    color: var(--text2);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.1s; animation: fadeIn 0.18s ease both; }
.data-table tbody tr:hover td { background: rgba(255,255,255,0.02); }
.data-table tr.hidden-row { display: none; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Badges */
.port-num { font-weight: 600; color: var(--text); font-size: 0.84rem; }
.service-name { color: var(--text2); }

.state-badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 9px; border-radius: 20px;
    font-size: 0.66rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
}
.state-badge.open     { background: rgba(34,211,124,0.1); color: var(--green); border: 1px solid rgba(34,211,124,0.25); }
.state-badge.closed   { background: rgba(58,79,114,0.15); color: var(--text3); border: 1px solid var(--border); }
.state-badge.filtered { background: rgba(245,166,35,0.1); color: var(--yellow); border: 1px solid rgba(245,166,35,0.25); }
.state-dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.state-badge.open .state-dot { box-shadow: 0 0 4px var(--green); }

.proto-tag {
    display: inline-block; padding: 2px 7px;
    background: var(--accent-glow); border: 1px solid rgba(79,138,255,0.18);
    border-radius: 4px; color: var(--accent); font-size: 0.66rem; text-transform: uppercase;
}

.chain-badge {
    display: inline-block; padding: 2px 8px; border-radius: 4px;
    font-size: 0.66rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
    background: var(--surface2); border: 1px solid var(--border2); color: var(--text2);
}
.chain-badge.INPUT   { border-color: rgba(79,138,255,0.25); color: var(--accent); background: var(--accent-glow); }
.chain-badge.OUTPUT  { border-color: rgba(34,211,124,0.2); color: var(--green); background: rgba(34,211,124,0.08); }
.chain-badge.FORWARD { border-color: rgba(245,166,35,0.2); color: var(--yellow); background: rgba(245,166,35,0.08); }

.target-badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 9px; border-radius: 4px;
    font-size: 0.66rem; font-weight: 700; text-transform: uppercase;
}
.target-ACCEPT, .target-ALLOW  { background: rgba(34,211,124,0.1); color: var(--green); border: 1px solid rgba(34,211,124,0.2); }
.target-DROP, .target-DENY, .target-REJECT { background: rgba(255,76,106,0.1); color: var(--red); border: 1px solid rgba(255,76,106,0.2); }
.target-LOG { background: rgba(245,166,35,0.1); color: var(--yellow); border: 1px solid rgba(245,166,35,0.2); }

.raw-rule {
    color: var(--text3); font-size: 0.68rem;
    max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* Audit */
.audit-allowed { color: var(--green); }
.audit-blocked { color: var(--red); }

.attack-badge {
    display: inline-block; padding: 2px 7px; border-radius: 4px;
    font-size: 0.63rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
}
.attack-sql-injection       { background: rgba(255,124,80,0.12); color: var(--orange); border: 1px solid rgba(255,124,80,0.25); }
.attack-xss                 { background: rgba(245,166,35,0.12); color: var(--yellow); border: 1px solid rgba(245,166,35,0.25); }
.attack-path-traversal      { background: var(--accent-glow); color: var(--accent); border: 1px solid rgba(79,138,255,0.2); }
.attack-command-injection   { background: rgba(255,76,106,0.1); color: var(--red); border: 1px solid rgba(255,76,106,0.2); }

/* ════════════════════════════════════════════════════════════
   WAF / WEB FIREWALL SPECIFIC
════════════════════════════════════════════════════════════ */
.wf-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.wf-card-wide { grid-column: 1 / -1; }

.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
}
.stat-box {
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 10px 12px;
}
.stat-val {
    font-family: var(--mono); font-size: 1.2rem; font-weight: 700;
    color: var(--accent); display: block;
}
.stat-key {
    font-size: 0.63rem; color: var(--text3);
    text-transform: uppercase; letter-spacing: 0.08em; margin-top: 2px;
}

.detection-list { display: flex; flex-direction: column; gap: 8px; }
.det-toggle {
    display: flex; align-items: center; gap: 10px;
    cursor: pointer; padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface2);
    transition: border-color 0.15s;
    user-select: none;
}
.det-toggle:hover { border-color: var(--border2); }
.det-toggle input[type="checkbox"] { width: 14px; height: 14px; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; }
.det-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.det-dot.sql  { background: var(--orange); box-shadow: 0 0 5px var(--orange); }
.det-dot.xss  { background: var(--yellow); box-shadow: 0 0 5px var(--yellow); }
.det-dot.path { background: var(--accent);  box-shadow: 0 0 5px var(--accent); }
.det-dot.cmd  { background: var(--red);     box-shadow: 0 0 5px var(--red); }
.det-label { font-family: var(--mono); font-size: 0.78rem; color: var(--text); flex: 1; }
.det-cat { font-size: 0.66rem; color: var(--text3); font-family: var(--mono); }

.feature-list { display: flex; flex-direction: column; gap: 10px; }
.feature-item { display: flex; align-items: flex-start; gap: 12px; }
.feat-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text3); margin-top: 4px; flex-shrink: 0; }
.feat-dot.active { background: var(--green); box-shadow: 0 0 6px var(--green); }
.feature-item strong { color: var(--text); font-size: 0.82rem; font-weight: 600; display: block; margin-bottom: 2px; }
.feature-item p { font-size: 0.74rem; color: var(--text2); line-height: 1.5; }

/* ════════════════════════════════════════════════════════════
   DEVICE FIREWALL
════════════════════════════════════════════════════════════ */
.device-form-grid {
    display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 14px;
}
.device-form-grid .input-group { min-width: 140px; flex: 1; }

/* ════════════════════════════════════════════════════════════
   RULE FORM
════════════════════════════════════════════════════════════ */
.rule-form-grid {
    display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px;
}
.rule-form-grid .input-group { flex: 1; min-width: 110px; }

/* ════════════════════════════════════════════════════════════
   COMMAND OUTPUT
════════════════════════════════════════════════════════════ */
.cmd-output {
    margin-top: 12px; padding: 12px 14px;
    border-radius: var(--radius);
    font-family: var(--mono); font-size: 0.71rem;
    line-height: 1.65; white-space: pre-wrap; word-break: break-all;
    border: 1px solid var(--border2); background: var(--bg); color: var(--text2);
}
.cmd-output.hidden   { display: none; }
.cmd-output.cmd-ok   { border-color: rgba(34,211,124,0.25); color: var(--green); background: rgba(34,211,124,0.04); }
.cmd-output.cmd-err  { border-color: rgba(255,76,106,0.25); color: var(--red); background: rgba(255,76,106,0.04); }

/* ════════════════════════════════════════════════════════════
   ACTION MESSAGES
════════════════════════════════════════════════════════════ */
.action-msg {
    margin-top: 10px; padding: 8px 12px;
    border-radius: var(--radius);
    font-family: var(--mono); font-size: 0.73rem;
}
.action-msg.success { background: rgba(34,211,124,0.08); color: var(--green); border: 1px solid rgba(34,211,124,0.2); }
.action-msg.error   { background: rgba(255,76,106,0.08); color: var(--red); border: 1px solid rgba(255,76,106,0.2); }
.action-msg.info    { background: var(--accent-glow); color: var(--accent); border: 1px solid rgba(79,138,255,0.2); }
.action-msg.hidden  { display: none; }

/* ════════════════════════════════════════════════════════════
   VULN TESTS
════════════════════════════════════════════════════════════ */
.test-summary-bar {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--mono); font-size: 0.78rem;
}
.test-pass-count { color: var(--green); font-weight: 700; }
.test-fail-count { color: var(--red); font-weight: 700; }
.test-pass { color: var(--green); font-weight: 700; font-size: 1rem; font-family: var(--mono); }
.test-fail { color: var(--red); font-weight: 700; font-size: 1rem; font-family: var(--mono); }

.sev-badge {
    display: inline-block; padding: 2px 8px; border-radius: 4px;
    font-size: 0.63rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
}
.sev-critical { background: rgba(255,76,106,0.15); color: var(--red); border: 1px solid rgba(255,76,106,0.3); }
.sev-high     { background: rgba(255,124,80,0.12); color: var(--orange); border: 1px solid rgba(255,124,80,0.25); }
.sev-medium   { background: rgba(245,166,35,0.12); color: var(--yellow); border: 1px solid rgba(245,166,35,0.25); }
.sev-low      { background: rgba(34,211,124,0.09); color: var(--green); border: 1px solid rgba(34,211,124,0.2); }

/* ════════════════════════════════════════════════════════════
   SPINNER / LOADING / PLACEHOLDER
════════════════════════════════════════════════════════════ */
.spinner {
    width: 16px; height: 16px;
    border: 2px solid var(--border2); border-top-color: var(--accent);
    border-radius: 50%; animation: spin 0.7s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading {
    display: flex; align-items: center; justify-content: center;
    gap: 10px; padding: 48px;
    color: var(--text2); font-family: var(--mono); font-size: 0.8rem;
}

.placeholder {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 10px; padding: 52px 20px;
    color: var(--text3);
}
.placeholder-icon { font-size: 2rem; opacity: 0.2; }
.placeholder p { font-size: 0.8rem; text-align: center; }

.error-box {
    margin: 14px 20px; padding: 11px 14px;
    background: rgba(255,76,106,0.06); border: 1px solid rgba(255,76,106,0.2);
    border-radius: var(--radius); color: var(--red);
    font-family: var(--mono); font-size: 0.75rem;
}

/* ════════════════════════════════════════════════════════════
   SIDEBAR OVERLAY (mobile)
════════════════════════════════════════════════════════════ */
.sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 199;
    backdrop-filter: blur(2px);
}

/* ════════════════════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════════════════════ */
.page-footer {
    margin-top: 24px; padding-bottom: 8px;
    text-align: center;
    font-size: 0.68rem; color: var(--text3);
    letter-spacing: 0.05em; font-family: var(--mono);
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (≤ 900px)
════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
    .dash-stats { grid-template-columns: 1fr 1fr; }
    .dash-grid  { grid-template-columns: 1fr; }
    .wf-grid    { grid-template-columns: 1fr; }
    .wf-card-wide { grid-column: auto; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile (≤ 680px)
════════════════════════════════════════════════════════════ */
@media (max-width: 680px) {
    .sidebar {
        position: fixed;
        top: 0; left: 0; bottom: 0;
        transform: translateX(-100%);
        z-index: 200;
        transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay { display: block; }
    .sidebar-overlay.visible { opacity: 1; pointer-events: auto; }
    .sidebar-overlay { opacity: 0; pointer-events: none; transition: opacity 0.28s; }
    .mobile-menu-btn { display: flex; }
    .main { width: 100%; }
    .content-scroll { padding: 16px; }
    .dash-stats { grid-template-columns: 1fr 1fr; }
    .topbar { padding: 0 16px; }
    .explain-lang { flex-direction: column; gap: 8px; }
    .device-form-grid { flex-direction: column; }
    .rule-form-grid { flex-direction: column; }
}

@media (max-width: 420px) {
    .dash-stats { grid-template-columns: 1fr; }
    html { font-size: 13px; }
}