/* ═══════════════════════════════════════════════════════════════════════
   KTANA Engine Panel — Design System
   Background: #000  |  Accent: #D70030  |  Aesthetic: Dark Samurai
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  --bg: #000000;
  --bg-card: #111111;
  --bg-card-hover: #1a1a1a;
  --bg-input: #0a0a0a;
  --red: #D70030;
  --red-hover: #FF1A1A;
  --red-dark: #9B0A2A;
  --text: #FFFFFF;
  --text-secondary: #888888;
  --text-muted: #555555;
  --border: #222222;
  --border-red: #D70030;
  --green: #00C853;
  --yellow: #FFD600;
  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius: 8px;
  --transition: all 0.2s ease;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ─── Login Page ─────────────────────────────────────────────────────── */

.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-box {
  width: 100%;
  max-width: 400px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  position: relative;
}

.login-box::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 13px;
  padding: 1px;
  background: linear-gradient(135deg, var(--red), transparent 50%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.login-logo h1 span {
  color: var(--red);
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 6px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(215, 0, 48, 0.15);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-primary {
  width: 100%;
  background: var(--red);
  color: var(--text);
}

.btn-primary:hover {
  background: var(--red-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(215, 0, 48, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--red);
  color: var(--red);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 12px;
}

.error-msg {
  background: rgba(215, 0, 48, 0.1);
  border: 1px solid var(--red-dark);
  color: var(--red);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 20px;
  text-align: center;
}

/* ─── Layout ─────────────────────────────────────────────────────────── */

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.sidebar-logo h1 span {
  color: var(--red);
}

.sidebar-logo p {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 1px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.sidebar-nav a.active {
  color: var(--text);
  background: rgba(215, 0, 48, 0.08);
  border-left-color: var(--red);
}

.sidebar-nav a svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.sidebar-footer a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 13px;
}

.sidebar-footer a:hover {
  color: var(--red);
}

.main {
  flex: 1;
  margin-left: 240px;
  padding: 32px;
}

.page-header {
  margin-bottom: 32px;
}

.page-header h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* ─── Status Cards ───────────────────────────────────────────────────── */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover::after {
  opacity: 1;
}

.card-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.card-value {
  font-size: 20px;
  font-weight: 700;
}

.card-detail {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ─── Status Indicators ──────────────────────────────────────────────── */

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.status-online { background: var(--green); box-shadow: 0 0 8px var(--green); }
.status-offline { background: var(--red); box-shadow: 0 0 8px var(--red); }
.status-unknown { background: var(--yellow); box-shadow: 0 0 8px var(--yellow); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-green {
  background: rgba(0, 200, 83, 0.1);
  color: var(--green);
  border: 1px solid rgba(0, 200, 83, 0.2);
}

.badge-red {
  background: rgba(215, 0, 48, 0.1);
  color: var(--red);
  border: 1px solid rgba(215, 0, 48, 0.2);
}

.badge-yellow {
  background: rgba(255, 214, 0, 0.1);
  color: var(--yellow);
  border: 1px solid rgba(255, 214, 0, 0.2);
}

/* ─── WhatsApp Page ──────────────────────────────────────────────────── */

.wa-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.wa-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.wa-section h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.wa-section .wa-number {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  margin-bottom: 20px;
}

.wa-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.qr-container {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 16px;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-container pre {
  font-family: var(--font-mono);
  font-size: 4px;
  line-height: 4px;
  letter-spacing: 0;
  color: var(--text);
  white-space: pre;
  overflow: auto;
  max-width: 100%;
}

.qr-container img {
  max-width: 256px;
  border-radius: 4px;
}

.qr-placeholder {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ─── Chat Page ──────────────────────────────────────────────────────── */

.chat-layout {
  display: flex;
  height: calc(100vh - 64px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.chat-sidebar {
  width: 320px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.chat-sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.chat-sidebar-header h3 {
  font-size: 14px;
  font-weight: 600;
}

.chat-search {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 13px;
  font-family: var(--font);
  outline: none;
  margin-top: 12px;
  transition: var(--transition);
}

.chat-search:focus {
  border-color: var(--red);
}

.chat-list {
  flex: 1;
  overflow-y: auto;
}

.chat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.chat-item:hover {
  background: rgba(255, 255, 255, 0.03);
}

.chat-item.active {
  background: rgba(215, 0, 48, 0.08);
  border-left: 3px solid var(--red);
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.chat-info {
  flex: 1;
  min-width: 0;
}

.chat-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.chat-preview {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-time {
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-header .chat-name {
  font-size: 16px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  max-width: 70%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
}

.message-received {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.message-sent {
  align-self: flex-end;
  background: var(--red-dark);
  border-bottom-right-radius: 4px;
}

.message-time {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
}

.chat-input-area {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 12px;
}

.chat-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  transition: var(--transition);
}

.chat-input:focus {
  border-color: var(--red);
}

.btn-send {
  padding: 12px 20px;
  background: var(--red);
  border: none;
  border-radius: var(--radius);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-send:hover {
  background: var(--red-hover);
}

.chat-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* ─── Section Panels ─────────────────────────────────────────────────── */

.section-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.section-panel h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* ─── Table ──────────────────────────────────────────────────────────── */

.table-container {
  overflow-x: auto;
}

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

th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ─── Scrollbars ─────────────────────────────────────────────────────── */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ─── Responsive ─────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .sidebar {
    width: 60px;
    overflow: hidden;
  }

  .sidebar-logo h1,
  .sidebar-logo p,
  .sidebar-nav a span,
  .sidebar-footer span {
    display: none;
  }

  .sidebar-nav a {
    justify-content: center;
    padding: 16px;
  }

  .main {
    margin-left: 60px;
    padding: 16px;
  }

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

  .chat-sidebar {
    width: 240px;
  }
}

/* ─── Animations ─────────────────────────────────────────────────────── */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  animation: fadeIn 0.3s ease;
}

.card:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3) { animation-delay: 0.1s; }
.card:nth-child(4) { animation-delay: 0.15s; }
.card:nth-child(5) { animation-delay: 0.2s; }

/* ─── Katana Divider ─────────────────────────────────────────────────── */

.katana-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--red), transparent);
  margin: 24px 0;
  opacity: 0.4;
}

/* ─── Perfil Page ───────────────────────────────────────────────────── */

.perfil-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.perfil-card {
  padding: 24px;
}

.perfil-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.perfil-card-header svg {
  color: var(--red);
  flex-shrink: 0;
}

.perfil-card-header h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.perfil-info-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.perfil-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.perfil-info-label {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.perfil-info-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

.perfil-form .form-group {
  margin-bottom: 16px;
}

.perfil-form .form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.perfil-form .form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font);
  transition: var(--transition);
  outline: none;
}

.perfil-form .form-group input:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(215, 0, 48, 0.15);
}

.form-hint {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.perfil-message {
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 16px;
}

.perfil-message-success {
  background: rgba(0, 200, 83, 0.1);
  border: 1px solid rgba(0, 200, 83, 0.2);
  color: var(--green);
}

.perfil-message-error {
  background: rgba(215, 0, 48, 0.1);
  border: 1px solid var(--red-dark);
  color: var(--red);
}

.perfil-sessions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.perfil-session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.perfil-session-current {
  border-color: rgba(0, 200, 83, 0.3);
}

.perfil-session-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.perfil-session-label {
  font-size: 14px;
  font-weight: 500;
}

.perfil-session-detail {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: 2px;
}

.perfil-session-count {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 0;
}

.perfil-session-count strong {
  color: var(--text);
}

@media (max-width: 768px) {
  .perfil-grid {
    grid-template-columns: 1fr;
  }
}