/* Mail Relay Monitoring — Corporate UI */
:root {
  --bg: #0b0e14;
  --bg-sidebar: #0d1117;
  --bg-card: #151b25;
  --bg-input: #0d1117;
  --bg-hover: #1c2333;
  --bg-active: rgba(56,139,253,0.08);
  --border: #21262d;
  --border-light: #30363d;
  --text: #e6edf3;
  --text-secondary: #8b949e;
  --text-dim: #484f58;
  --accent: #388bfd;
  --accent-hover: #58a6ff;
  --green: #3fb950;
  --green-bg: rgba(63,185,80,0.12);
  --red: #f85149;
  --red-bg: rgba(248,81,73,0.12);
  --yellow: #d29922;
  --yellow-bg: rgba(210,153,34,0.12);
  --purple: #a371f7;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 2px 8px rgba(0,0,0,0.25);
  --font: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono: 'JetBrains Mono','Fira Code',ui-monospace,monospace;
  --sidebar-w: 240px;
  --header-h: 56px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}

/* Sidebar */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:200;overflow-y:auto}
.sidebar-brand{padding:16px 20px;font-size:15px;font-weight:700;color:var(--text);letter-spacing:-0.03em;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;height:var(--header-h)}
.sidebar-brand svg{color:var(--accent);flex-shrink:0}
.sidebar-nav{padding:12px 8px;flex:1}
.sidebar-section{margin-bottom:4px}
.sidebar-section-title{padding:8px 12px 4px;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-dim)}
.sidebar-link{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;font-size:13px;font-weight:500;color:var(--text-secondary);transition:all 0.15s}
.sidebar-link:hover{color:var(--text);background:var(--bg-hover)}
.sidebar-link.active{color:var(--accent);background:var(--bg-active)}
.sidebar-link svg{width:16px;height:16px;flex-shrink:0;opacity:0.7}
.sidebar-link.active svg{opacity:1;color:var(--accent)}
.sidebar-user{padding:12px 16px;border-top:1px solid var(--border);font-size:12px;color:var(--text-secondary)}
.sidebar-user strong{display:block;color:var(--text);font-size:13px;margin-bottom:2px}

/* Main */
.main-content{margin-left:var(--sidebar-w);min-height:100vh}
.topbar{height:var(--header-h);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:var(--bg-sidebar);position:sticky;top:0;z-index:100}
.topbar-title{font-size:16px;font-weight:600;letter-spacing:-0.02em}
.topbar-actions{display:flex;align-items:center;gap:12px}
.topbar-actions a{font-size:12px;color:var(--text-secondary);padding:6px 12px;border:1px solid var(--border);border-radius:6px;transition:all 0.15s}
.topbar-actions a:hover{color:var(--text);border-color:var(--border-light)}
.page-content{padding:24px}

/* Auth */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}
.auth-box{background:var(--bg-card);padding:32px;border-radius:var(--radius-lg);width:100%;max-width:400px;border:1px solid var(--border);box-shadow:var(--shadow)}
.auth-box h1{font-size:22px;font-weight:700;margin-bottom:4px;letter-spacing:-0.03em}
.auth-subtitle{color:var(--text-secondary);margin-bottom:24px;font-size:14px}
.auth-form label{display:block;margin-bottom:16px;font-size:13px;font-weight:500;color:var(--text-secondary)}
.auth-form input{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--border);border-radius:6px;background:var(--bg-input);color:var(--text);font-size:14px;transition:border 0.15s,box-shadow 0.15s}
.auth-form input::placeholder{color:var(--text-dim)}
.auth-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(56,139,253,0.15)}
.auth-form button{width:100%;padding:10px;background:var(--accent);color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;transition:background 0.15s;margin-top:8px}
.auth-form button:hover{background:var(--accent-hover)}

/* Alert messages */
.alert{padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:13px;border:1px solid transparent}
.alert-error{background:var(--red-bg);color:var(--red);border-color:rgba(248,81,73,0.25)}
.alert-success{background:var(--green-bg);color:var(--green);border-color:rgba(63,185,80,0.25)}

/* Cards */
.card{background:var(--bg-card);border-radius:var(--radius);padding:20px;margin-bottom:16px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.card-header h2{font-size:14px;font-weight:600;color:var(--text)}
.card-header .card-badge{font-size:11px;background:var(--bg-hover);color:var(--text-secondary);padding:4px 8px;border-radius:4px}

/* Stats grid */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-bottom:20px}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-sm)}
.stat-card .stat-value{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--text);line-height:1.1;letter-spacing:-0.02em}
.stat-card .stat-label{font-size:12px;color:var(--text-secondary);margin-top:4px}
.stat-card.accent .stat-value{color:var(--accent)}
.stat-card.green .stat-value{color:var(--green)}
.stat-card.red .stat-value{color:var(--red)}
.stat-card.yellow .stat-value{color:var(--yellow)}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}
th{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-dim);background:rgba(0,0,0,0.15)}
tbody tr:hover td{background:var(--bg-hover)}
tbody tr:last-child td{border-bottom:none}
td code{font-family:var(--mono);font-size:12px;color:var(--text-secondary)}

/* Badges */
.badge{display:inline-block;padding:3px 8px;border-radius:4px;font-size:11px;font-weight:600;letter-spacing:0.02em}
.badge-sent,.badge-delivered,.badge-accepted,.badge-success,.badge-online{background:var(--green-bg);color:var(--green)}
.badge-bounced,.badge-expired,.badge-danger,.badge-offline{background:var(--red-bg);color:var(--red)}
.badge-rejected,.badge-warning{background:var(--yellow-bg);color:var(--yellow)}
.badge-deferred,.badge-queued{background:rgba(163,113,247,0.12);color:var(--purple)}
.badge-neutral{background:var(--bg-hover);color:var(--text-secondary)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:500;border-radius:6px;border:1px solid transparent;cursor:pointer;transition:all 0.15s;text-decoration:none}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hover)}
.btn-outline{background:transparent;color:var(--text-secondary);border-color:var(--border)}
.btn-outline:hover{color:var(--text);border-color:var(--border-light)}
.btn-danger{background:transparent;color:var(--red);border-color:transparent}
.btn-danger:hover{background:var(--red-bg)}
.btn-sm{padding:5px 10px;font-size:12px}
a.button{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;font-size:12px;font-weight:500;color:var(--accent);border:1px solid var(--border);border-radius:6px;transition:all 0.15s}
a.button:hover{background:var(--bg-active);border-color:var(--accent)}

/* Inline forms */
form.inline{display:inline}
form.inline button{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:12px;padding:4px 8px;border-radius:4px;transition:all 0.15s}
form.inline button:hover{color:var(--red);background:var(--red-bg)}

/* Forms */
label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}
input[type="text"],input[type="email"],input[type="password"],input[type="number"],input[type="date"],input[type="url"],select,textarea{display:block;width:100%;max-width:420px;padding:8px 12px;border:1px solid var(--border);border-radius:6px;background:var(--bg-input);color:var(--text);font-size:13px;margin-bottom:12px;transition:border 0.15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(56,139,253,0.12)}
textarea{max-width:100%;min-height:80px}
button[type="submit"],button.btn{padding:8px 16px;font-size:13px;font-weight:600;background:var(--accent);color:#fff;border:none;border-radius:6px;cursor:pointer;transition:background 0.15s;position:relative;z-index:1}
button[type="submit"]:hover,button.btn:hover{background:var(--accent-hover)}

/* Filters bar */
.filters-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:end;margin-bottom:16px;padding:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}
.filters-bar label{margin-bottom:0;font-size:11px}
.filters-bar input,.filters-bar select{margin-bottom:0;max-width:160px;padding:6px 10px;font-size:12px}
.filters-bar button{padding:6px 14px;font-size:12px}

/* Pagination */
.pagination{display:flex;gap:4px;margin-top:16px;align-items:center}
.pagination a,.pagination span{padding:6px 10px;font-size:12px;border-radius:4px;border:1px solid var(--border);color:var(--text-secondary)}
.pagination a:hover{background:var(--bg-hover);color:var(--text)}
.pagination .current{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Grid layouts */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
@media(max-width:900px){.grid-2,.grid-3{grid-template-columns:1fr}}

/* Monitor */
.monitor-screen{font-family:var(--mono);background:#000;color:#c9d1d9;border-radius:var(--radius);min-height:70vh;overflow:hidden;border:1px solid var(--border)}
.monitor-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:rgba(255,255,255,0.03);border-bottom:1px solid var(--border);font-size:12px;color:var(--text-secondary)}
.monitor-header .dot{width:8px;height:8px;border-radius:50%;background:var(--green);display:inline-block;margin-right:6px;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}
.monitor-body{padding:8px 0;max-height:65vh;overflow-y:auto}
.monitor-row{display:flex;padding:4px 16px;font-size:12px;border-bottom:1px solid rgba(255,255,255,0.03)}
.monitor-row:hover{background:rgba(255,255,255,0.02)}
.monitor-row .col-time{width:150px;color:var(--text-dim);flex-shrink:0}
.monitor-row .col-status{width:70px;flex-shrink:0;font-weight:600}
.monitor-row .col-from{flex:1;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.monitor-row .col-arrow{width:24px;text-align:center;color:var(--text-dim);flex-shrink:0}
.monitor-row .col-to{flex:1;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.monitor-row .col-server{width:120px;color:var(--text-dim);text-align:right;flex-shrink:0;font-size:11px}
.status-sent,.status-delivered,.status-accepted{color:var(--green)}.status-bounced,.status-expired{color:var(--red)}.status-rejected{color:var(--yellow)}.status-deferred,.status-queued{color:var(--purple)}

.monitor-stats{display:flex;gap:24px;padding:12px 16px;border-bottom:1px solid var(--border);font-size:12px;color:var(--text-secondary);background:rgba(0,0,0,0.3)}
.monitor-stats .ms-val{color:var(--accent);font-weight:600}

/* Footer */
.app-footer{padding:16px 24px;text-align:center;color:var(--text-dim);font-size:12px;border-top:1px solid var(--border)}

/* Responsive */
@media(max-width:768px){
  .sidebar{display:none}
  .main-content{margin-left:0}
}