/* ===== Reset / base ===== */
* {
  box-sizing: border-box;
}

:root {
  --color-bg: #0f1420;
  --color-surface: #171d2c;
  --color-surface-alt: #1e2637;
  --color-border: #2a3346;
  --color-text: #e6e9f0;
  --color-text-muted: #9aa4b8;
  --color-primary: #4f7cff;
  --color-primary-hover: #6690ff;
  --color-primary-2: #8a5cf6;
  --color-danger: #ef5a6f;
  --color-success: #35c56a;
  --color-warning: #e8a53d;
  --color-info: #33bfe0;
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-2) 100%);
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 14px 32px rgba(0, 0, 0, 0.45);
  --transition: all 0.18s ease;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  line-height: 1.4;
  background:
    radial-gradient(circle at 15% 0%, rgba(79, 124, 255, 0.12), transparent 40%),
    radial-gradient(circle at 85% 15%, rgba(138, 92, 246, 0.10), transparent 45%),
    var(--color-bg);
  background-attachment: fixed;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-hover);
}

h1, h2, h3 {
  margin: 0 0 0.5em 0;
}

/* ===== Layout utilities ===== */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 24px;
}

.hidden {
  display: none !important;
}

.flex {
  display: flex;
  align-items: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gap-sm {
  gap: 8px;
}

.gap-md {
  gap: 16px;
}

/* ===== Login page ===== */
.login-page {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.login-card h1 {
  font-size: 1.5rem;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.login-card p.subtitle {
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.login-error {
  color: var(--color-danger);
  font-size: 0.85rem;
  min-height: 1.2em;
  margin-top: -8px;
  margin-bottom: 12px;
}

/* ===== Forms / buttons ===== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.label-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  opacity: 0.7;
  font-weight: 400;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
}

.form-grid .span-2 {
  grid-column: 1 / -1;
}

input[type="text"],
input[type="password"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

textarea {
  resize: vertical;
  min-height: 44px;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 124, 255, 0.18);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  width: 100%;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-gradient {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(79, 124, 255, 0.35);
}

.btn-gradient:hover {
  filter: brightness(1.08);
  box-shadow: 0 8px 22px rgba(79, 124, 255, 0.45);
}

.btn-danger {
  background: transparent;
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.btn-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

.btn-sm {
  padding: 6px 10px;
  font-size: 0.8rem;
}

/* ===== Simple top bar (device detail page) ===== */
.topbar {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.topbar .container {
  padding-top: 16px;
  padding-bottom: 16px;
}

/* ===== Dashboard shell (left sidebar layout) ===== */
.app-shell {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}

.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
}

.sidebar-brand {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0 24px 20px 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-icon {
  font-size: 0.6rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  color: var(--color-text-muted);
  border-left: 3px solid transparent;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-icon {
  font-size: 1rem;
  opacity: 0.85;
}

.sidebar-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-alt);
  padding-left: 28px;
}

.sidebar-nav a.active {
  color: var(--color-text);
  border-left-color: var(--color-primary);
  background: linear-gradient(90deg, rgba(79, 124, 255, 0.14), transparent);
}

.sidebar-nav a#logoutBtn {
  margin-top: auto;
}

.sidebar-footer {
  padding: 16px 24px 0 24px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.main-content {
  flex: 1;
  min-width: 0;
  padding: 32px;
  max-width: 1400px;
}

.form-card {
  max-width: 780px;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-heading h2 {
  margin: 0;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 4px 0 0 0;
}

/* ===== Filter bars ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.filter-bar input[type="text"] {
  flex: 1;
  min-width: 200px;
}

.filter-bar select {
  width: auto;
  min-width: 150px;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-text);
  transform: translateY(-1px);
}

.page-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

.page-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ===== Dashboard summary ===== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lift);
}

.stat-icon {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 2px;
}

.dashboard-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.breakdown-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.breakdown-row .badge {
  flex-shrink: 0;
  width: 96px;
  text-align: center;
}

.breakdown-bar-track {
  flex: 1;
  height: 8px;
  background: var(--color-surface-alt);
  border-radius: 999px;
  overflow: hidden;
}

.breakdown-bar-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.breakdown-count {
  flex-shrink: 0;
  width: 24px;
  text-align: right;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.summary-row:last-child {
  border-bottom: none;
}

/* ===== Cards ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card-accent {
  border-top: 3px solid transparent;
  border-image: var(--gradient-primary) 1;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-title-icon {
  margin-right: 4px;
}

.empty-state {
  color: var(--color-text-muted);
  text-align: center;
  padding: 32px 16px;
  font-size: 0.9rem;
}

.text-muted-sm {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ===== Project cards ===== */
#projectList {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 16px;
  align-items: start;
}

.project-card {
  position: relative;
  padding-left: 26px;
  overflow: hidden;
  margin-bottom: 0;
}

.grid-span-full {
  grid-column: 1 / -1;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--color-primary);
}

.project-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 6px;
}

.project-card-accent.status-planning { background: var(--color-info); }
.project-card-accent.status-active { background: var(--color-success); }
.project-card-accent.status-on-hold { background: var(--color-warning); }
.project-card-accent.status-completed { background: var(--color-text-muted); }

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.project-description {
  color: var(--color-text-muted);
  margin: 0 0 4px 0;
}

.project-meta {
  margin: 12px 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.tag {
  font-size: 0.75rem;
  color: var(--color-primary-hover);
  background: rgba(79, 124, 255, 0.12);
  border-radius: 6px;
  padding: 2px 8px;
}

/* ===== Tables ===== */
#deviceTableWrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

th {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tbody tr {
  transition: var(--transition);
}

tbody tr:hover {
  background: var(--color-surface-alt);
}

.device-link {
  font-weight: 500;
}

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid transparent;
}

.badge-online {
  background: rgba(53, 197, 106, 0.15);
  color: var(--color-success);
  border-color: rgba(53, 197, 106, 0.35);
}

.badge-offline {
  background: rgba(154, 164, 184, 0.15);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.badge-idle {
  background: rgba(232, 165, 61, 0.15);
  color: var(--color-warning);
  border-color: rgba(232, 165, 61, 0.35);
}

.badge-mqtt {
  background: rgba(79, 124, 255, 0.15);
  color: var(--color-primary-hover);
  border-color: rgba(79, 124, 255, 0.35);
}

.badge-http {
  background: rgba(232, 165, 61, 0.15);
  color: var(--color-warning);
  border-color: rgba(232, 165, 61, 0.35);
}

.badge-status-planning {
  background: rgba(51, 191, 224, 0.15);
  color: var(--color-info);
  border-color: rgba(51, 191, 224, 0.35);
}

.badge-status-active {
  background: rgba(53, 197, 106, 0.15);
  color: var(--color-success);
  border-color: rgba(53, 197, 106, 0.35);
}

.badge-status-on-hold {
  background: rgba(232, 165, 61, 0.15);
  color: var(--color-warning);
  border-color: rgba(232, 165, 61, 0.35);
}

.badge-status-completed {
  background: rgba(154, 164, 184, 0.15);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}


/* ===== Project device chips ===== */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 8px 6px 14px;
  font-size: 0.85rem;
  transition: var(--transition);
}

.chip:hover {
  border-color: var(--color-primary);
}

.chip .chip-remove {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 2px 6px;
}

.chip .chip-remove:hover {
  color: var(--color-danger);
}

.add-device-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.add-device-row select {
  flex: 1;
}

/* ===== Device checkbox list (create project) ===== */
.device-checkbox-list {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-alt);
  max-height: 220px;
  overflow-y: auto;
  padding: 4px;
}

.device-checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

.device-checkbox-item:hover {
  background: var(--color-surface);
}

.device-checkbox-item input[type="checkbox"] {
  width: auto;
  accent-color: var(--color-primary);
}

/* ===== Device detail ===== */
.device-detail-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  align-items: start;
}

.device-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.device-meta .meta-item .meta-label {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

.device-meta .meta-item .meta-value {
  font-size: 0.95rem;
}

.log-feed {
  max-height: 70vh;
  min-height: 300px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log-entry {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: 6px;
  padding: 10px 12px;
}

.log-entry.protocol-http {
  border-left-color: var(--color-warning);
}

.log-entry.status-error {
  border-left-color: var(--color-danger);
}

.log-entry-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.log-timestamp {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.log-direction {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.log-endpoint {
  font-family: "Consolas", "SFMono-Regular", Menlo, monospace;
  font-size: 0.85rem;
}

.log-payload {
  font-family: "Consolas", "SFMono-Regular", Menlo, monospace;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  display: inline-block;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.3; }
  100% { opacity: 1; }
}

/* ===== Responsive ===== */

/* Tablets / small laptops: collapse two-column grids, keep the sidebar */
@media (max-width: 1024px) {
  .sidebar {
    width: 200px;
  }

  .dashboard-columns {
    grid-template-columns: 1fr;
  }

  .device-detail-grid {
    grid-template-columns: 1fr;
  }

  #projectList {
    grid-template-columns: 1fr;
  }

  .log-feed {
    max-height: 50vh;
  }
}

@media (max-width: 768px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    flex-direction: row;
    align-items: center;
    padding: 12px 16px;
    gap: 8px;
    overflow-x: auto;
  }

  .sidebar-brand {
    border-bottom: none;
    padding: 0 12px 0 0;
    margin-bottom: 0;
  }

  .sidebar-nav {
    flex-direction: row;
    flex: none;
  }

  .sidebar-nav a {
    padding: 8px 12px;
    border-left: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }

  .sidebar-nav a.active {
    border-left: none;
    border-bottom-color: var(--color-primary);
  }

  .sidebar-nav a#logoutBtn {
    margin-top: 0;
    margin-left: auto;
  }

  .sidebar-footer {
    display: none;
  }

  .main-content {
    padding: 16px;
    max-width: 100%;
  }

  th, td {
    font-size: 0.8rem;
    padding: 8px;
  }

  .add-device-row {
    flex-direction: column;
    align-items: stretch;
  }

  .device-meta {
    grid-template-columns: 1fr 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-columns {
    grid-template-columns: 1fr;
  }

  .breakdown-row .badge {
    width: 76px;
    font-size: 0.68rem;
  }

  .filter-bar {
    flex-direction: column;
  }

  .filter-bar input[type="text"],
  .filter-bar select {
    width: 100%;
    min-width: 0;
  }
}