:root {
    --primary: #7289da;
    --primary-dark: #5b6eae;
    --primary-glow: rgba(114, 137, 218, 0.35);
    --bg: #1e2124;
    --surface: #2c2f33;
    --surface-alt: #36393f;
    --surface-hi: #40444b;
    --text: #ffffff;
    --text-muted: #b9bbbe;
    --success: #43b581;
    --danger: #f04747;
    --warning: #faa61a;
    --border: rgba(255, 255, 255, 0.08);
    --radius: 10px;
    --radius-sm: 6px;
    --transition: 0.2s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
}

body {
    display: flex;
    flex-direction: column;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text); }

h1, h2, h3, h4 { color: var(--text); font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.6rem; margin-bottom: 0.75rem; color: var(--primary); }
h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
p { color: var(--text-muted); }

.topnav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(28, 31, 36, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.topnav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.85rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--text);
}

.brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: grid;
    place-items: center;
    color: white;
    font-weight: 800;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.brand-badge {
    font-size: 0.7rem;
    padding: 2px 6px;
    background: var(--surface);
    border-radius: 4px;
    color: var(--text-muted);
    font-weight: 600;
}

.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.92rem;
    transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
    color: var(--text);
    background: var(--surface);
}

.dropdown { position: relative; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    list-style: none;
    min-width: 160px;
    padding: 0.4rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu a { display: block; padding: 0.5rem 0.75rem; }

.user-area {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 0.5rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--border);
}
.user-tag {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 0.35rem 0.6rem;
    background: var(--surface);
    border-radius: var(--radius-sm);
}
.logout-btn {
    background: var(--danger);
    color: white !important;
    padding: 0.4rem 0.75rem !important;
    border-radius: var(--radius-sm);
    font-size: 0.85rem !important;
    font-weight: 600;
}
.logout-btn:hover { background: #d63d3d; }

.page-main {
    flex: 1;
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.hero {
    text-align: center;
    padding: 3rem 1rem 2rem;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    background: linear-gradient(135deg, var(--primary), #a3b3ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    max-width: 620px;
    margin: 0.5rem auto 0;
    font-size: 1.05rem;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.tool-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--text);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.tool-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, var(--primary-glow), transparent 60%);
    opacity: 0;
    transition: var(--transition);
}
.tool-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.tool-card:hover::before { opacity: 1; }
.tool-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--surface-alt);
    display: grid;
    place-items: center;
    font-size: 1.4rem;
    margin-bottom: 0.3rem;
    position: relative;
}
.tool-card h3 { position: relative; }
.tool-card p { font-size: 0.9rem; position: relative; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.field label {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

select, input[type="number"], input[type="text"], input[type="password"] {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.7rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    width: 100%;
    transition: var(--transition);
}
select:focus, input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.25rem; }

.btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.btn:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-secondary { background: var(--surface-alt); }
.btn-secondary:hover { background: var(--surface-hi); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #d63d3d; }

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
}
thead th {
    background: var(--surface-alt);
    color: var(--text);
    text-align: left;
    padding: 0.85rem 1rem;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
tbody td {
    padding: 0.85rem 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}
tbody tr:hover td { background: rgba(114, 137, 218, 0.05); color: var(--text); }
tfoot td, tfoot th {
    padding: 1rem;
    background: var(--surface-alt);
    color: var(--text);
    font-weight: 700;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--primary);
    color: white;
}
.badge-success { background: var(--success); }
.badge-warning { background: var(--warning); color: #2c2f33; }

.result-box {
    background: linear-gradient(135deg, var(--surface-alt), var(--surface));
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-top: 1.5rem;
    text-align: center;
}
.result-box .label {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}
.result-box .value {
    color: var(--text);
    font-size: 2rem;
    font-weight: 800;
}

.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 1.5rem 1rem;
    text-align: center;
}
.footer-inner p { color: var(--text-muted); font-size: 0.85rem; }
.footer-meta { margin-top: 0.25rem; font-size: 0.75rem; opacity: 0.7; }

.login-wrap {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}
.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.login-card h1 {
    text-align: center;
    background: linear-gradient(135deg, var(--primary), #a3b3ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.login-card .subtitle {
    text-align: center;
    margin-bottom: 1.5rem;
}
.login-form .field { margin-bottom: 1rem; }
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.alert-error {
    background: rgba(240, 71, 71, 0.15);
    border: 1px solid var(--danger);
    color: #ffb3b3;
}
.alert-info {
    background: rgba(114, 137, 218, 0.15);
    border: 1px solid var(--primary);
    color: #c8d2ff;
}

.ballistic-img {
    display: block;
    max-width: 320px;
    margin: 0 auto 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.wiki-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 2rem;
}
.wiki-sidebar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    position: sticky;
    top: 80px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}
.wiki-sidebar h3 { color: var(--primary); margin-bottom: 0.75rem; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; }
.wiki-sidebar ul { list-style: none; }
.wiki-sidebar li a {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: var(--transition);
}
.wiki-sidebar li a:hover, .wiki-sidebar li a.active { background: var(--surface-alt); color: var(--text); }

.wiki-content { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; }
.wiki-content section { margin-bottom: 2.5rem; scroll-margin-top: 90px; }
.wiki-content section h2 { border-bottom: 2px solid var(--primary); padding-bottom: 0.4rem; }
.wiki-content p { margin-bottom: 0.8rem; color: var(--text); }
.wiki-content ul { padding-left: 1.5rem; margin-bottom: 1rem; }
.wiki-content ul li { color: var(--text); margin-bottom: 0.3rem; }
.wiki-content strong { color: var(--primary); }
.wiki-search { width: 100%; margin-bottom: 1rem; }

.upgrade-percentage { color: var(--success); margin-left: 0.5rem; font-size: 0.85rem; }
.qty-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    background: var(--primary);
    color: white;
    margin-left: 0.5rem;
}

.error { color: var(--danger); }
.symmetrical { color: var(--primary); }

@media (max-width: 900px) {
    .wiki-layout { grid-template-columns: 1fr; }
    .wiki-sidebar { position: static; max-height: none; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
        border-bottom: 1px solid var(--border);
        display: none;
    }
    .nav-links.open { display: flex; }
    .nav-links a { width: 100%; }
    .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; margin-top: 0.25rem; }
    .user-area { border-left: none; padding-left: 0; margin-left: 0; }
    .page-main { padding: 1.25rem 1rem 2rem; }
}