:root {
  --bg: #070b10;
  --bg2: #0f1419;
  --card: #151f2e;
  --text: #e8eef5;
  --muted: #8b9cb3;
  --accent: #3d9a6a;
  --accent2: #5eead4;
  --border: #2a3648;
  --err: #f87171;
  --warn: #fbbf24;
  --ok: #86efac;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, rgba(61, 154, 106, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(94, 234, 212, 0.08), transparent 50%),
    var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

.auth-page { display: grid; place-items: center; padding: 24px; }
.auth-shell { width: 100%; max-width: 420px; }
.auth-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent), var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
}
.auth-brand h1 { margin: 0 0 6px; font-size: 1.35rem; }
.auth-brand p { margin: 0 0 20px; color: var(--muted); font-size: 0.92rem; }
.auth-foot { margin: 18px 0 0; color: var(--muted); font-size: 0.88rem; text-align: center; }

label { display: block; margin: 0 0 6px; color: var(--muted); font-size: 0.85rem; }
input[type=email], input[type=password], input[type=text], select, textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  margin-bottom: 14px;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(61, 154, 106, 0.35);
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 0.92rem;
  text-decoration: none;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), #2f7a55); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-block { width: 100%; }
.btn-secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-danger { background: #7f1d1d; color: #fecaca; }
.btn-sm { padding: 6px 10px; font-size: 0.82rem; }

.err { color: var(--err); font-size: 0.9rem; margin: 0 0 12px; }
.ok { color: var(--ok); font-size: 0.9rem; margin: 0 0 12px; }
.hint { color: var(--muted); font-size: 0.85rem; }

.site-header {
  background: rgba(15, 20, 25, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.site-header nav a { margin-right: 14px; color: var(--muted); }
.site-header nav a:hover { color: var(--text); }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  background: #243044;
  color: var(--muted);
}
.badge-pending { background: rgba(251, 191, 36, 0.15); color: var(--warn); }
.badge-approved { background: rgba(134, 239, 172, 0.12); color: var(--ok); }
.badge-rejected { background: rgba(248, 113, 113, 0.12); color: var(--err); }
.badge-online { background: rgba(134, 239, 172, 0.12); color: var(--ok); }
.badge-offline { background: rgba(148, 163, 184, 0.12); color: var(--muted); }

.site-main { max-width: 1180px; margin: 0 auto; padding: 24px 20px 56px; }
.panel-title { margin: 0 0 6px; font-size: 1.45rem; }
.panel-sub { color: var(--muted); margin: 0 0 22px; }

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.device-card {
  background: linear-gradient(160deg, rgba(61,154,106,0.08), transparent 40%), var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.device-card:hover {
  transform: translateY(-3px);
  border-color: rgba(61, 154, 106, 0.45);
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
}
.device-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.device-card .meta { color: var(--muted); font-size: 0.82rem; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #121a26; color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }
.num { font-variant-numeric: tabular-nums; }

.form-card {
  max-width: 520px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 18px;
}
/* Üye cihaz detay: grafiklerle aynı tam genişlik */
.device-panel {
  max-width: none;
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 22px;
  margin-bottom: 18px;
  box-sizing: border-box;
}
.device-panel h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
  font-weight: 600;
}
.device-panel .panel-sub { margin: 0 0 18px; }
.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px 20px;
}
.field-group label {
  display: block;
  margin: 0 0 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
}
.field-group input,
.field-group select {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 0;
}
.field-hint {
  margin: 6px 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--muted);
}
.field-group--full { grid-column: 1 / -1; }
.field-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.field-check input { margin-top: 3px; flex-shrink: 0; }
.field-check strong { display: block; margin-bottom: 4px; }
.device-panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* —— Üye cihaz detay (sekmeli) —— */
.device-page { max-width: 1180px; margin: 0 auto; }
.device-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 16px;
  text-decoration: none;
}
.device-back:hover { color: var(--accent2); text-decoration: none; }
.device-hero {
  background: linear-gradient(135deg, rgba(61,154,106,0.14) 0%, rgba(15,31,46,0.95) 42%, var(--card) 100%);
  border: 1px solid rgba(61,154,106,0.22);
  border-radius: 20px;
  padding: 24px 28px;
  margin-bottom: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.28);
}
.device-hero-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.device-hero h1 {
  margin: 0 0 6px;
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.device-hero-code {
  color: var(--muted);
  font-size: 0.9rem;
  font-family: ui-monospace, Consolas, monospace;
}
.device-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.device-meta-item {
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}
.device-meta-item span {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 4px;
}
.device-meta-item strong {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}
.device-tabs-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 6px;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.device-tab-btn {
  flex: 1;
  min-width: 100px;
  padding: 12px 18px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}
.device-tab-btn:hover {
  background: rgba(255,255,255,0.04);
  color: var(--text);
}
.device-tab-btn.is-active {
  background: linear-gradient(135deg, rgba(61,154,106,0.35), rgba(47,122,85,0.25));
  color: #fff;
  box-shadow: 0 4px 14px rgba(61,154,106,0.2);
}
.device-tab-panel {
  display: none;
  animation: deviceTabIn 0.28s ease;
}
.device-tab-panel.is-active { display: block; }
@keyframes deviceTabIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.flash-banner {
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.flash-banner.ok {
  background: rgba(134,239,172,0.1);
  border: 1px solid rgba(134,239,172,0.35);
  color: var(--ok);
}
.flash-banner.err {
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.35);
  color: var(--err);
}
.settings-stack { display: flex; flex-direction: column; gap: 18px; }
.settings-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.settings-card-head {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.settings-card-head h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 600;
}
.settings-card-head p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}
.settings-card-body { padding: 20px 22px; }
.settings-block {
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.settings-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.settings-block h3 {
  margin: 0 0 14px;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent2);
}
.log-table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.log-table-wrap table { border-radius: 0; border: none; margin: 0; }
.log-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 14px;
}
.pending-list { list-style: none; padding: 0; margin: 0; }
.pending-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}
.pending-item:first-child { border-top: none; padding-top: 0; }
.pending-item-meta { font-size: 0.9rem; }
.pending-item-actions { display: flex; gap: 8px; }

.admin-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 22px;
}
.admin-section-head {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.admin-section-head h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 600;
}
.admin-section-head .hint {
  margin: 0;
}
.form-grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 16px 20px;
}
.form-grid-2 label { margin-top: 0; }
.form-grid-2 input,
.form-grid-2 select { margin-bottom: 0; }
.form-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.form-actions-spacer { flex: 1; min-width: 12px; }
.form-actions-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.form-actions-label {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-right: 4px;
}
@media (max-width: 720px) {
  .form-grid-2 { grid-template-columns: 1fr; }
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  min-height: 260px;
  position: relative;
  overflow: hidden;
}
.chart-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 0%, rgba(94,234,212,0.08), transparent 45%);
  pointer-events: none;
}
.chart-card h3 { margin: 0 0 8px; font-size: 0.95rem; position: relative; }
.stat-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin: 16px 0; }
.stat-live {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.stat-live::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--muted);
  vertical-align: middle;
}
.stat-live.is-on { color: var(--accent2); border-color: rgba(61,154,106,0.35); }
.stat-live.is-on::before {
  background: var(--accent);
  box-shadow: 0 0 6px rgba(61,154,106,0.6);
  animation: stat-live-pulse 2s ease-in-out infinite;
}
@keyframes stat-live-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}
.stat-pill {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.85rem;
}
.stat-pill strong { color: var(--accent2); margin-right: 6px; }

.empty-state {
  border: 1px dashed var(--border);
  border-radius: 16px;
  padding: 36px 20px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  .site-main { padding-inline: 14px; }
}