/* ==============================================
   Segotelor MQTT — Design System
   Based on DESIGN.md (Zapier-inspired)
   ============================================== */

/* ===== DESIGN TOKENS ===== */
:root {
  /* Brand */
  --color-primary: #ff4f00;
  --color-primary-hover: #e64700;
  --color-primary-soft: rgba(255, 79, 0, 0.06);

  /* Surface */
  --color-canvas: #fffefb;
  --color-canvas-soft: #f8f4f0;

  /* Text */
  --color-ink: #201515;
  --color-ink-soft: #2f2a26;
  --color-ink-mid: #36342e;
  --color-body: #605d52;
  --color-body-mid: #939084;
  --color-mute: #c5c0b1;

  /* Semantic */
  --color-success: #166534;
  --color-success-bg: #dcfce7;
  --color-danger: #991b1b;
  --color-danger-bg: #fef2f2;
  --color-warning: #92400e;
  --color-warning-bg: #fef3c7;

  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Radius */
  --rounded-none: 0px;
  --rounded-sm: 6px;
  --rounded-md: 12px;
  --rounded-pill: 9999px;

  /* Spacing (4px base) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --space-3xl: 48px;
  --space-4xl: 64px;

  /* Layout */
  --sidebar-w: 248px;
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --color-canvas: #1a1714;
  --color-canvas-soft: #242019;
  --color-ink: #f0ece4;
  --color-ink-soft: #d8d3c8;
  --color-ink-mid: #b8b2a4;
  --color-body: #b8b2a4;
  --color-body-mid: #8a8478;
  --color-mute: #5a5549;
  --color-success-bg: rgba(22, 101, 52, 0.2);
  --color-danger-bg: rgba(153, 27, 27, 0.2);
  --color-warning-bg: rgba(146, 64, 14, 0.2);
  --color-primary-soft: rgba(255, 79, 0, 0.12);
}

[data-theme="dark"] .sidebar {
  background: #0f0d0a;
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="search"],
[data-theme="dark"] select {
  background: var(--color-canvas);
  color: var(--color-ink);
  border-color: var(--color-mute);
}

[data-theme="dark"] .data-table th {
  background: var(--color-canvas-soft);
  border-bottom-color: var(--color-mute);
}

[data-theme="dark"] .data-table td {
  border-bottom-color: rgba(90, 85, 73, 0.3);
}

[data-theme="dark"] .modal {
  background: var(--color-canvas-soft);
  border-color: var(--color-mute);
}

[data-theme="dark"] .table-wrapper {
  border-color: var(--color-mute);
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--rounded-sm);
  transition: background .15s;
  color: var(--color-mute);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-canvas-soft);
}

[data-theme="dark"] .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background: var(--color-canvas);
  color: var(--color-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-ink);
  font-weight: 500;
  letter-spacing: -0.3px;
}

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

/* ===== LOGIN PAGE ===== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-canvas-soft);
  min-height: 100vh;
  padding: var(--space-xl);
}

.login-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-ink);
  border-radius: var(--rounded-md);
  padding: var(--space-3xl) var(--space-2xl);
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.login-card .logo {
  font-size: 48px;
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.login-card h1 {
  font-size: 32px;
  font-weight: 500;
  line-height: 36px;
  letter-spacing: 1px;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}

.login-card .subtitle {
  font-size: 18px;
  color: var(--color-body-mid);
  margin-bottom: var(--space-2xl);
}

.login-card .input-group {
  text-align: left;
  margin-bottom: var(--space-lg);
}

.login-card .hint {
  margin-top: var(--space-xl);
  font-size: 14px;
  color: var(--color-mute);
}

/* ===== DASHBOARD LAYOUT ===== */
.dashboard {
  display: flex;
  min-height: 100vh;
  background: var(--color-canvas);
}

/* ----- Sidebar (dark coffee — DESIGN.md footer pattern) ----- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--color-ink);
  color: var(--color-canvas-soft);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform .25s ease;
}

.sidebar-header {
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-header .logo {
  font-size: 24px;
  line-height: 1;
}

.sidebar-header .brand {
  font-size: 20px;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--color-canvas);
  letter-spacing: -0.4px;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-md) var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--rounded-sm);
  text-decoration: none;
  color: var(--color-mute);
  font-size: 16px;
  font-weight: 400;
  transition: all .15s ease;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-canvas-soft);
}

.nav-item.active {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-canvas);
}

.nav-item svg {
  flex-shrink: 0;
}

.sidebar-footer {
  padding: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-footer .user-info {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-canvas-soft);
}

.sidebar-footer .btn-ghost {
  color: var(--color-mute);
  border-color: rgba(255, 255, 255, 0.15);
}

.sidebar-footer .btn-ghost:hover {
  color: var(--color-canvas-soft);
  background: rgba(255, 255, 255, 0.08);
}

/* Mobile toggle */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 200;
  background: var(--color-canvas);
  border: 1px solid var(--color-ink);
  border-radius: var(--rounded-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: 18px;
  cursor: pointer;
  color: var(--color-ink);
}

/* ----- Main Content ----- */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: var(--space-2xl) var(--space-2xl);
  min-width: 0;
  max-width: 1200px;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.topbar h2 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.6px;
  color: var(--color-ink);
}

/* Stats Row */
.stats-row {
  display: flex;
  gap: var(--space-md);
}

.stat-card {
  background: var(--color-canvas-soft);
  border-radius: var(--rounded-md);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 80px;
}

.stat-num {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-ink);
  font-family: var(--font-display);
}

.stat-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-body-mid);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Page visibility */
.page { display: block; }
.page.hidden { display: none; }

/* ===== COMPONENTS ===== */

/* Input group */
.input-group { margin-bottom: var(--space-lg); }

.input-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}

/* Text Input (DESIGN.md text-input: 1px solid ink, rounded-sm 6px) */
input[type="text"],
input[type="password"],
input[type="search"],
select {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-ink);
  border-radius: var(--rounded-sm);
  font-size: 16px;
  font-family: var(--font-body);
  background: var(--color-canvas);
  color: var(--color-ink);
  transition: border-color .15s ease, box-shadow .15s ease;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px rgba(32, 21, 21, 0.08);
}

input::placeholder {
  color: var(--color-mute);
}

/* Search */
.search-input {
  max-width: 260px;
}

/* Select */
select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23605d52' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* Checkbox */
input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  margin-right: var(--space-xs);
  vertical-align: -2px;
}

/* ===== BUTTONS (DESIGN.md) ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--rounded-md);
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all .15s ease;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.4;
}

/* Primary CTA — Orange (DESIGN.md button-primary) */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

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

/* Secondary — Ink (DESIGN.md button-secondary) */
.btn-secondary {
  background: var(--color-ink);
  color: var(--color-canvas);
}

.btn-secondary:hover {
  background: var(--color-ink-soft);
}

/* Outline / Ghost (DESIGN.md button-tertiary) */
.btn-ghost {
  background: transparent;
  color: var(--color-body);
  border: 1px solid var(--color-ink);
}

.btn-ghost:hover {
  background: var(--color-canvas-soft);
  color: var(--color-ink);
}

/* Small */
.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1px;
  border-radius: var(--rounded-sm);
}

/* Full width */
.btn-full { width: 100%; }

/* Disabled */
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .5s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* Error message */
.error-msg {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--rounded-sm);
  font-size: 14px;
  margin-bottom: var(--space-lg);
  border: 1px solid rgba(153, 27, 27, 0.2);
}

/* ===== TABLE ===== */
.table-wrapper {
  background: var(--color-canvas);
  border: 1px solid var(--color-ink);
  border-radius: var(--rounded-md);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th {
  text-align: left;
  padding: var(--space-md) var(--space-lg);
  font-weight: 500;
  font-size: 11px;
  color: var(--color-body-mid);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--color-canvas-soft);
  border-bottom: 1px solid var(--color-ink);
  font-family: var(--font-display);
}

.data-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-mute);
  color: var(--color-body);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover td {
  background: var(--color-primary-soft);
}

.data-table td strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* ===== BADGES (DESIGN.md badge-pill) ===== */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--rounded-pill);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  line-height: 1.6;
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-primary {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(32, 21, 21, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  backdrop-filter: blur(3px);
}

.modal {
  background: var(--color-canvas);
  border: 1px solid var(--color-ink);
  border-radius: var(--rounded-md);
  padding: var(--space-2xl);
  width: 90%;
  max-width: 460px;
  animation: slideUp .2s ease;
}

@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.modal-header h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.5px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-body-mid);
  line-height: 1;
  padding: 0 var(--space-xs);
  transition: color .15s;
}

.modal-close:hover {
  color: var(--color-ink);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

/* ===== TOOLBAR ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

/* ===== HELPERS ===== */
.hint {
  color: var(--color-body-mid);
  font-size: 14px;
}

code {
  background: var(--color-canvas-soft);
  padding: 2px 6px;
  border-radius: var(--rounded-sm);
  font-size: 13px;
  color: var(--color-ink-mid);
  font-family: 'SF Mono', 'Fira Code', monospace;
}

/* Action cell */
.action-cell {
  white-space: nowrap;
}

.action-cell .btn-sm {
  margin-right: var(--space-xs);
}

/* Delete button — red tint on ghost */
.btn-del {
  color: var(--color-danger) !important;
  border-color: rgba(153, 27, 27, 0.3) !important;
}

.btn-del:hover {
  background: var(--color-danger-bg) !important;
  color: var(--color-danger) !important;
}

/* ===== SUBSCRIPTION / RENEWAL ===== */
.renewal-banner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  border-radius: var(--rounded-md);
  margin-bottom: var(--space-xl);
}

.renewal-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.renewal-text {
  flex: 1;
}

.renewal-text h4 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-warning);
}

.renewal-text p {
  margin: 0;
  font-size: 13px;
  color: var(--color-body);
}

.renewal-actions {
  flex-shrink: 0;
}

.plan-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-mute);
  border-radius: var(--rounded-md);
  padding: var(--space-xl);
  transition: border-color .2s, box-shadow .2s;
}

.plan-card:hover {
  border-color: var(--color-ink);
}

.plan-card.current {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.plan-card .plan-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.plan-card .plan-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.plan-card .plan-price span {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-body-mid);
}

.plan-card .plan-desc {
  font-size: 13px;
  color: var(--color-body);
  margin-bottom: 16px;
}

.plan-card .plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  font-size: 13px;
}

.plan-card .plan-features li {
  padding: 4px 0;
  color: var(--color-body);
}

.plan-card .plan-features li::before {
  content: '✓ ';
  color: var(--color-success);
  font-weight: 700;
}

.plan-card .plan-features li.disabled {
  color: var(--color-mute);
}

.plan-card .plan-features li.disabled::before {
  content: '✗ ';
  color: var(--color-mute);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    border-radius: 0;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-toggle {
    display: block;
  }

  .main-content {
    margin-left: 0;
    padding: var(--space-lg);
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats-row {
    width: 100%;
    justify-content: space-between;
  }

  .login-card {
    padding: var(--space-2xl) var(--space-xl);
    margin: var(--space-lg);
  }
}

/* ===== TERMINAL STYLES ===== */
.term-ts { color: #666; }
[data-theme="dark"] .term-ts { color: #888; }

/* MQTT Info topic items */
.mqtt-topic-item {
  padding: 6px 10px;
  margin-bottom: 4px;
  background: #f8f9fa;
  border-radius: 4px;
  border-left: 3px solid #3b82f6;
}
[data-theme="dark"] .mqtt-topic-item {
  background: #1a2332;
}
.mqtt-topic-empty {
  color: #999;
}
[data-theme="dark"] .mqtt-topic-empty {
  color: #666;
}