/* ==============================================
   OPCOM CENTRAL — BASE STYLES
   ============================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500&display=swap');

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

input, select, textarea, button {
    border-radius: 0;
    -webkit-appearance: none;
    appearance: none;
}

:root {
    --color-bg:          #0b0d0f;
    --color-surface:     #111518;
    --color-surface-2:   #181c20;
    --color-border:      #1e2830;
    --color-accent:      #3a8fa3;
    --color-accent-dim:  #1a4a56;
    --color-accent-glow: rgba(58, 143, 163, 0.10);
    --color-amber:       #c4870a;
    --color-amber-glow:  rgba(196, 135, 10, 0.10);
    --color-red:         #9b2020;
    --color-red-bright:  #c0392b;
    --color-red-glow:    rgba(192, 57, 43, 0.10);
    --color-text:        #cdd6dc;
    --color-text-dim:    #7a8e98;
    --color-text-bright: #e8f0f4;
    --font-mono:         'JetBrains Mono', 'Courier New', monospace;
    --font-body:         'IBM Plex Sans', system-ui, sans-serif;
    --sidebar-width:     240px;
    --topbar-height:     40px;
}

html, body { height: 100%; }

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}

/* Global scan-line overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 3px,
        rgba(0, 0, 0, 0.05) 3px,
        rgba(0, 0, 0, 0.05) 4px
    );
    pointer-events: none;
    z-index: 9999;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-text-bright); }

/* ---- LAYOUT ---- */
.layout { display: flex; min-height: 100vh; }

/* ---- SIDEBAR ---- */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background-color: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0 1.25rem;
    border-bottom: 1px solid var(--color-border);
    height: var(--topbar-height);
    flex-shrink: 0;
}

.brand-mark {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 1rem;
}

.brand-name {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    color: var(--color-text-bright);
}

.sidebar-nav {
    flex: 1;
    padding: 1.25rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.05rem;
}

.nav-section-label {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.22em;
    color: var(--color-amber);
    opacity: 0.75;
    padding: 0.6rem 1.25rem 0.2rem;
    margin-top: 0.4rem;
}

.nav-item {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--color-text-dim);
    padding: 0.4rem 1.25rem;
    border-left: 2px solid transparent;
    transition: color 0.15s, border-color 0.15s, background-color 0.15s;
}

.nav-item:hover {
    color: var(--color-text);
    background-color: var(--color-surface-2);
}

@keyframes nav-pulse {
    0%, 100% { background-color: var(--color-accent-glow); }
    50%       { background-color: rgba(58, 143, 163, 0.16); }
}

.nav-item--active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    background-color: var(--color-accent-glow);
    animation: nav-pulse 2.8s ease-in-out infinite;
}

.nav-item--active::before { content: '▸ '; }

.nav-item--danger { color: var(--color-red); }
.nav-item--danger:hover {
    color: var(--color-red-bright);
    background-color: var(--color-red-glow);
    border-left-color: var(--color-red-bright);
}

.nav-item--amber { color: var(--color-amber); }
.nav-item--amber:hover {
    color: var(--color-amber);
    background-color: var(--color-amber-glow);
    border-left-color: var(--color-amber);
}

.sidebar-footer {
    padding: 0.75rem 0;
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

/* ---- LAYOUT MAIN ---- */
.layout-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

/* ---- TOPBAR ---- */
.topbar {
    height: var(--topbar-height);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.75rem;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-breadcrumb {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.16em;
    color: var(--color-text-dim);
}

.topbar-breadcrumb span { color: var(--color-text); }

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.topbar-user {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    color: var(--color-text-dim);
}

.topbar-user a { color: var(--color-text-dim); transition: color 0.15s; }
.topbar-user a:hover { color: var(--color-red-bright); }

/* ---- MAIN CONTENT ---- */
.main-content {
    flex: 1;
    padding: 2rem 1.75rem;
    background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* ---- FOOTER ---- */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    text-align: center;
    padding: 0.65rem;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    color: var(--color-text-dim);
    flex-shrink: 0;
}

/* ---- PANEL ---- */
.panel {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-accent);
    position: relative;
    margin-bottom: 1.5rem;
}

/* Top-right corner bracket */
.panel::before {
    content: '';
    position: absolute;
    top: -2px; right: -1px;
    width: 14px; height: 14px;
    border-top: 2px solid var(--color-accent);
    border-right: 1px solid var(--color-accent);
    pointer-events: none;
    z-index: 1;
}

/* Bottom-left corner bracket */
.panel::after {
    content: '';
    position: absolute;
    bottom: -1px; left: -1px;
    width: 10px; height: 10px;
    border-bottom: 1px solid var(--color-accent-dim);
    border-left: 1px solid var(--color-accent-dim);
    pointer-events: none;
    z-index: 1;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    color: var(--color-text-dim);
    background-color: var(--color-surface-2);
}

/* Short accent pip before header text */
.panel-header::before {
    content: '';
    display: block;
    flex-shrink: 0;
    width: 8px; height: 1px;
    background: var(--color-accent-dim);
}

/* Fading accent line after header text */
.panel-header::after {
    content: '';
    display: block;
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--color-accent-dim), transparent);
}

.panel-body { padding: 1rem; }

/* ---- PAGE HEADER ---- */
.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--color-text-bright);
    margin-bottom: 0.3rem;
    text-shadow: 0 0 18px rgba(58, 143, 163, 0.45), 0 0 45px rgba(58, 143, 163, 0.15);
}

.page-meta {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    color: var(--color-text-dim);
}

/* ---- UTILITIES ---- */
.highlight { color: var(--color-accent); font-family: var(--font-mono); }

.alert {
    padding: 0.65rem 1rem;
    border-left: 3px solid;
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.06em;
}

.alert-error {
    border-color: var(--color-red-bright);
    background-color: var(--color-red-glow);
    color: var(--color-red-bright);
}

.alert-success {
    border-color: var(--color-accent);
    background-color: var(--color-accent-glow);
    color: var(--color-accent);
}

/* ---- STATUS BADGES ---- */
.status {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    padding: 0.18rem 0.55rem 0.18rem 0.7rem;
    border-left: 3px solid;
    background-color: var(--color-surface-2);
}

.status--active     { border-color: var(--color-accent);     color: var(--color-accent);     }
.status--loa        { border-color: var(--color-amber);      color: var(--color-amber);      }
.status--pending    { border-color: var(--color-amber);      color: var(--color-amber);      }
.status--approved   { border-color: var(--color-accent);     color: var(--color-accent);     }
.status--denied     { border-color: var(--color-red-bright); color: var(--color-red-bright); }
.status--reserve    { border-color: var(--color-border);     color: var(--color-text-dim);   }
.status--discharged { border-color: var(--color-red);        color: var(--color-red);        }
.status--classified { border-color: var(--color-red-bright);  color: #fff; background: rgba(180,30,30,0.18); letter-spacing: 0.15em; }

/* ---- BUTTONS ---- */
.btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    padding: 0.5rem 1rem;
    border: 1px solid;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
    background: transparent;
}

.btn-primary { border-color: var(--color-accent); color: var(--color-accent); }
.btn-primary:hover { background-color: var(--color-accent-glow); color: var(--color-text-bright); box-shadow: 0 0 12px rgba(58, 143, 163, 0.22); }

.btn-danger { border-color: var(--color-red-bright); color: var(--color-red-bright); }
.btn-danger:hover { background-color: var(--color-red-glow); box-shadow: 0 0 10px rgba(192, 57, 43, 0.2); }

.btn-ghost { border-color: var(--color-border); color: var(--color-text-dim); }
.btn-ghost:hover { border-color: var(--color-text-dim); color: var(--color-text); }

/* ---- SIDEBAR SYS INFO ---- */
.sidebar-sys {
    padding: 0.4rem 1.25rem 0.6rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.sidebar-sys-item {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    color: var(--color-text-dim);
    opacity: 0.65;
}

/* ---- TOPBAR CLASSIFICATION ---- */
.topbar-classify {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.16em;
    color: var(--color-amber);
    border: 1px solid rgba(196, 135, 10, 0.3);
    padding: 0.1rem 0.5rem;
    opacity: 0.8;
}