:root {
  --bg: #0f1419;
  --bg-elevated: #1a2028;
  --bg-card: #1f2630;
  --bg-hover: #2a3340;
  --border: #2a3340;
  --border-strong: #3a4554;
  --text: #e6e9ef;
  --text-muted: #8a95a5;
  --text-dim: #5a6473;
  --accent: #4a9eff;
  --accent-hover: #3b8ce8;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  --radius: 8px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ---- LOGIN ---- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f1419 0%, #1a2335 100%);
  padding: 20px;
}
.login-container { width: 100%; max-width: 400px; }
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 32px;
  box-shadow: var(--shadow);
}
.login-header { text-align: center; margin-bottom: 28px; }
.logo { font-size: 48px; margin-bottom: 12px; }
.login-header h1 { font-size: 22px; margin-bottom: 6px; }
.subtitle { color: var(--text-muted); font-size: 13px; }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-footer {
  text-align: center;
  margin-top: 20px;
  color: var(--text-dim);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  padding: 0 8px;
}

/* ---- TOPBAR ---- */
.topbar {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-left h1 { font-size: 16px; font-weight: 600; }
.logo-small { font-size: 24px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.server-time {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 10px;
  background: var(--bg-card);
  border-radius: 4px;
}
.user-info { color: var(--text-muted); font-size: 13px; }
#current-user { color: var(--text); font-weight: 500; }

/* ---- TABS ---- */
.tabs {
  display: flex;
  gap: 4px;
  padding: 0 24px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 14px 18px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; padding: 24px; max-width: 1400px; margin: 0 auto; }
.tab-panel.active { display: block; }

/* ---- STATS ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.stat-card .label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-card .value { font-size: 24px; font-weight: 600; margin-top: 4px; }
.stat-card.active .value { color: var(--success); }
.stat-card.disabled .value { color: var(--warning); }
.stat-card.revoked .value { color: var(--danger); }
.stat-card.expired .value { color: var(--text-dim); }

/* ---- TOOLBAR ---- */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.toolbar-left, .toolbar-right { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.toolbar input[type="search"], .toolbar input[type="text"] { min-width: 280px; }

/* ---- FORM ---- */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 13px; color: var(--text-muted); font-weight: 500; }
.form-group small { font-size: 12px; color: var(--text-dim); }

input[type="text"], input[type="password"], input[type="number"], input[type="search"], input[type="datetime-local"], select, textarea {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text);
  padding: 9px 12px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.15);
}

.radio-group { display: flex; gap: 16px; padding: 4px 0; }
.radio-group label { display: flex; gap: 6px; cursor: pointer; color: var(--text); font-weight: normal; }

.quick-presets { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.quick-presets button {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}
.quick-presets button:hover { background: var(--bg-hover); color: var(--text); }

/* ---- BUTTONS ---- */
.btn {
  background: var(--bg-hover);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:hover { background: var(--border-strong); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: white; }
.btn-danger:hover { background: var(--danger-hover); border-color: var(--danger-hover); }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; justify-content: center; padding: 11px 14px; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* ---- TABLE ---- */
.table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  white-space: nowrap;
}
.data-table th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: sticky;
  top: 0;
}
.data-table tbody tr:hover { background: var(--bg-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table .empty { text-align: center; color: var(--text-dim); padding: 40px; }
.data-table code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 12px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.badge-active { background: rgba(34, 197, 94, 0.15); color: #4ade80; }
.badge-disabled { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.badge-revoked { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.badge-expired { background: rgba(107, 114, 128, 0.2); color: #9ca3af; }
.badge-unlimited { background: rgba(74, 158, 255, 0.15); color: #60a5fa; }
.badge-locked { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.badge-unlocked { background: rgba(107, 114, 128, 0.2); color: #9ca3af; }

.row-actions { display: flex; gap: 4px; }

/* ---- MODALS ---- */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal.hidden { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(2px); }
.modal-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}
.modal-large { max-width: 720px; }
.modal-small { max-width: 400px; }
.modal-card > header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}
.modal-card > header h2 { font-size: 16px; font-weight: 600; }
.btn-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-close:hover { background: var(--bg-hover); color: var(--text); }
.modal-card > form, .modal-card > .modal-body, .modal-card > div:not(.modal-backdrop):not(header):not(footer) { padding: 22px; }
.modal-card > footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 22px;
  border-top: 1px solid var(--border);
}
.modal-card > form > footer { padding: 16px 0 0 0; border-top: 1px solid var(--border); margin-top: 8px; display: flex; justify-content: flex-end; gap: 8px; }

/* ---- ERRORS / TOAST ---- */
.error-box, .form-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 12px;
}
.hidden { display: none !important; }

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 12px 18px;
  border-radius: 6px;
  box-shadow: var(--shadow);
  min-width: 240px;
  font-size: 13px;
  animation: slideIn 0.2s ease-out;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--accent); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---- DETAIL VIEW (lisans düzenle) ---- */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.detail-item {
  background: var(--bg);
  padding: 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.detail-item .label { color: var(--text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.detail-item .value { margin-top: 4px; word-break: break-all; }
.detail-item .value.mono { font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: 13px; }
.detail-item .value-big { font-size: 15px; font-weight: 600; }

.action-section {
  border-top: 1px solid var(--border);
  padding-top: 18px;
  margin-top: 6px;
}
.action-section h3 { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.action-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.action-row input, .action-row select { flex: 1; min-width: 120px; }

/* ---- COPY BUTTON ---- */
.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 12px;
  margin-left: 4px;
}
.copy-btn:hover { background: var(--bg-hover); color: var(--text); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .topbar { padding: 10px 14px; flex-wrap: wrap; gap: 8px; }
  .topbar-left h1 { font-size: 14px; }
  .server-time { display: none; }
  .tabs { padding: 0 14px; }
  .tab-panel { padding: 14px; }
  .toolbar input[type="search"], .toolbar input[type="text"] { min-width: unset; width: 100%; }
  .toolbar-left, .toolbar-right { width: 100%; }
  .data-table th, .data-table td { padding: 10px 8px; font-size: 12px; }
}