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

:root {
  --primary: #1E3A8A;
  --accent: #FF5F1F;
  --accent-hover: #ff7a45;
  --bg-dark: #0F172A;
  --bg-card: #1E293B;
  --bg-elevated: #2a3a52;
  --border: #334155;
  --text: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748b;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
}

/* Login */
.login-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; background: var(--bg-dark); }
.login-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 2px; padding: 2.5rem; width: 100%; max-width: 420px; }
.logo { font-size: 2.5rem; font-weight: 800; letter-spacing: -1.5px; text-align: center; margin-bottom: 0.5rem; }
.logo .tid { color: var(--text); }
.logo .hex { color: var(--accent); }
.tagline { color: var(--text-muted); text-align: center; margin-bottom: 2rem; font-size: 0.85rem; }

/* App Layout */
.app { display: none; min-height: 100vh; }
.app.active { display: flex; }

/* Sidebar */
.sidebar { width: 240px; background: var(--bg-card); border-right: 1px solid var(--border); padding: 1.5rem 1rem; display: flex; flex-direction: column; position: fixed; height: 100vh; z-index: 10; }
.sidebar-logo { font-size: 1.5rem; font-weight: 800; margin-bottom: 0.25rem; letter-spacing: -1px; }
.sidebar-logo .tid { color: var(--text); }
.sidebar-logo .hex { color: var(--accent); }
.sidebar-tagline { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 2rem; }
.nav-section { font-size: 0.7rem; text-transform: uppercase; color: var(--text-dim); letter-spacing: 1px; padding: 0 0.5rem; margin: 1rem 0 0.5rem; }
.nav-item { display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 0.75rem; border-radius: 2px; cursor: pointer; color: var(--text-muted); transition: all 0.15s; margin-bottom: 0.15rem; font-weight: 500; font-size: 0.85rem; border: 1px solid transparent; }
.nav-item:hover { background: var(--bg-elevated); color: var(--text); }
.nav-item.active { background: var(--accent); color: var(--text); }
.nav-item .icon { width: 16px; flex-shrink: 0; }

/* User Card */
.user-card { margin-top: auto; padding: 0.75rem; background: var(--bg-elevated); border-radius: 2px; display: flex; align-items: center; gap: 0.75rem; border: 1px solid var(--border); }
.avatar { width: 36px; height: 36px; border-radius: 2px; background: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1rem; }
.user-info { flex: 1; min-width: 0; }
.user-name { font-weight: 600; font-size: 0.85rem; }
.user-role { font-size: 0.7rem; color: var(--text-muted); }
.logout-btn { background: transparent; border: 1px solid var(--border); color: var(--text-muted); cursor: pointer; padding: 0.4rem 0.6rem; border-radius: 2px; font-size: 14px; }
.logout-btn:hover { background: rgba(239,68,68,0.1); color: var(--error); border-color: var(--error); }

/* Main Content */
.main { flex: 1; margin-left: 240px; padding: 2rem; max-width: 100%; }
.page-header { margin-bottom: 2rem; }
.page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.25rem; }
.page-subtitle { color: var(--text-muted); font-size: 0.9rem; }

/* Cards */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 2px; padding: 1.5rem; margin-bottom: 1rem; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.card-title { font-size: 1rem; font-weight: 600; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.4rem; font-weight: 500; }
input { width: 100%; padding: 0.65rem 0.85rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 2px; color: var(--text); font-size: 0.9rem; font-family: inherit; transition: all 0.15s; }
input:focus { outline: none; border-color: var(--accent); }

/* File Input */
.file-input { display: none; }
.file-input-label { width: 100%; padding: 2rem; background: var(--bg-elevated); border: 1px dashed var(--border); border-radius: 2px; color: var(--text); cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 0.5rem; transition: all 0.15s; }
.file-input-label:hover { border-color: var(--accent); border-style: solid; background: rgba(255,95,31,0.05); }
.file-input-label .upload-icon { font-size: 1.5rem; color: var(--accent); }
.file-name { margin-top: 0.5rem; font-size: 0.85rem; color: var(--success); font-family: 'JetBrains Mono', monospace; }

/* Buttons */
button { padding: 0.65rem 1.25rem; border-radius: 2px; border: none; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: inherit; transition: all 0.15s; }
.btn-primary { background: var(--accent); color: white; width: 100%; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 2px; padding: 1.25rem; border-left: 2px solid var(--accent); }
.stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.5rem; }
.stat-value { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.25rem; color: var(--text); font-family: 'JetBrains Mono', monospace; }
.stat-meta { font-size: 0.75rem; color: var(--text-dim); }

/* Info Grid */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 0.75rem; }
.info-item { background: var(--bg-elevated); padding: 0.85rem 1rem; border-radius: 2px; border-left: 2px solid var(--accent); border-top: 1px solid var(--border); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.info-label { color: var(--text-muted); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.3rem; font-weight: 500; }
.info-value { font-size: 0.95rem; font-weight: 600; word-break: break-all; font-family: 'JetBrains Mono', monospace; }

/* Badges */
.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 2px; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; font-family: 'JetBrains Mono', monospace; }
.badge-success { background: rgba(34,197,94,0.15); color: var(--success); border: 1px solid rgba(34,197,94,0.3); }
.badge-error { background: rgba(239,68,68,0.15); color: var(--error); border: 1px solid rgba(239,68,68,0.3); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); border: 1px solid rgba(245,158,11,0.3); }

/* Messages */
.message { padding: 0.65rem 0.85rem; border-radius: 2px; margin-top: 1rem; font-size: 0.85rem; border: 1px solid; }
.message.success { background: rgba(34,197,94,0.08); color: var(--success); border-color: rgba(34,197,94,0.2); }
.message.error { background: rgba(239,68,68,0.08); color: var(--error); border-color: rgba(239,68,68,0.2); }
.message.info { background: rgba(255,95,31,0.08); color: var(--accent); border-color: rgba(255,95,31,0.2); }

/* Spinner */
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,0.2); border-top-color: white; border-radius: 50%; animation: spin 0.8s linear infinite; vertical-align: middle; margin-right: 4px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Misc */
pre { background: #020617; padding: 1rem; border-radius: 2px; overflow-x: auto; font-size: 0.8rem; font-family: 'JetBrains Mono', monospace; border: 1px solid var(--border); max-height: 400px; }
details summary { cursor: pointer; color: var(--text-muted); padding: 0.5rem 0; user-select: none; font-size: 0.85rem; }
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }
.hidden { display: none; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 60px; padding: 1rem 0.5rem; }
  .sidebar-logo, .sidebar-tagline, .nav-item span:not(.icon), .user-info { display: none; }
  .nav-item { justify-content: center; }
  .main { margin-left: 60px; padding: 1rem; }
  .user-card { padding: 0.5rem; }
}