/* ==========================================================================
   WhatsApp CRM Dashboard CSS System
   ========================================================================== */

:root {
  --bg-dark: #0b0f19;
  --bg-card: #131b2e;
  --bg-sidebar: #0f1626;
  --bg-hover: #1c2742;
  --bg-active: #243254;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(37, 211, 102, 0.3);

  --accent-whatsapp: #25d366;
  --accent-whatsapp-hover: #20bd5a;
  --accent-glow: rgba(37, 211, 102, 0.25);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --bubble-incoming: #1e293b;
  --bubble-outgoing: #064e3b;
  --bubble-outgoing-text: #ecfdf5;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', var(--font-sans);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.crm-app {
  display: grid;
  grid-template-columns: 360px 1fr;
  height: 100vh;
  width: 100vw;
  background: radial-gradient(circle at 10% 20%, rgba(37, 211, 102, 0.03) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.03) 0%, transparent 40%);
}

/* ==========================================================================
   Sidebar Styling
   ========================================================================== */

.sidebar {
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  user-select: none;
}

.sidebar-header {
  padding: 20px 20px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-info h2 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.brand-badge {
  font-size: 0.7rem;
  background-color: rgba(37, 211, 102, 0.15);
  color: var(--accent-whatsapp);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sim-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-fast);
}

.sim-btn:hover {
  background: var(--bg-hover);
  color: var(--accent-whatsapp);
  border-color: var(--border-highlight);
}

/* Search Box */
.search-box {
  margin: 16px 20px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-box svg {
  position: absolute;
  left: 12px;
  color: var(--text-dim);
}

.search-box input {
  width: 100%;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 12px 10px 38px;
  color: var(--text-main);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--accent-whatsapp);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Chat List */
.chat-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 12px;
}

.chat-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  margin-bottom: 4px;
  border: 1px solid transparent;
}

.chat-item:hover {
  background-color: var(--bg-hover);
}

.chat-item.active {
  background-color: var(--bg-active);
  border-color: rgba(37, 211, 102, 0.2);
}

.chat-item .avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: #fff;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
}

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

.chat-info-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.chat-info-top h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-info-top .time {
  font-size: 0.72rem;
  color: var(--text-dim);
  flex-shrink: 0;
}

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

.chat-info-bottom .last-msg {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.unread-badge {
  background-color: var(--accent-whatsapp);
  color: #000;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: center;
}

.domain-tag {
  background-color: rgba(255, 255, 255, 0.03);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.3px;
}

/* Loading Spinner */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
  color: var(--text-muted);
  gap: 12px;
  font-size: 0.88rem;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent-whatsapp);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ==========================================================================
   Main Chat Workspace Styling
   ========================================================================== */

.chat-main {
  background-color: var(--bg-dark);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}

/* Empty State */
.empty-workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.empty-icon {
  width: 80px;
  height: 80px;
  background-color: var(--bg-card);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent-whatsapp);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.empty-workspace h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--text-main);
  margin-bottom: 8px;
}

.empty-workspace p {
  max-width: 360px;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-dim);
}

/* Active Workspace */
.active-workspace {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.active-workspace.hidden {
  display: none;
}

/* Header */
.chat-header {
  padding: 16px 24px;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.contact-profile {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-profile .avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.contact-details h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
}

.contact-phone {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-indicator {
  font-size: 0.78rem;
  color: var(--accent-whatsapp);
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(37, 211, 102, 0.08);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(37, 211, 102, 0.2);
}

.status-indicator .dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-whatsapp);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-whatsapp);
}

/* Viewport for Messages */
.messages-viewport {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.015) 0%, transparent 100%);
}

/* Message Bubbles */
.message-bubble {
  max-width: 65%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  position: relative;
  line-height: 1.5;
  font-size: 0.92rem;
  animation: fadeIn 0.2s cubic-bezier(0, 0, 0.2, 1);
  word-break: break-word;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.message-bubble.incoming {
  align-self: flex-start;
  background-color: var(--bubble-incoming);
  color: var(--text-main);
  border-top-left-radius: 4px;
  border: 1px solid var(--border-color);
}

.message-bubble.outgoing {
  align-self: flex-end;
  background-color: var(--bubble-outgoing);
  color: var(--bubble-outgoing-text);
  border-top-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.message-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

.status-ticks {
  color: var(--accent-whatsapp);
  font-weight: bold;
}

/* Templates Bar */
.templates-bar {
  padding: 8px 24px;
  background-color: var(--bg-sidebar);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
}

.template-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  flex-shrink: 0;
}

.template-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-fast);
}

.template-chip:hover {
  background: var(--bg-hover);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Composer Footer */
.composer-footer {
  padding: 16px 24px;
  background-color: var(--bg-sidebar);
  border-top: 1px solid var(--border-color);
}

.composer-form {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 8px 8px 8px 16px;
  transition: var(--transition-fast);
}

.composer-form:focus-within {
  border-color: var(--accent-whatsapp);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.composer-form textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  resize: none;
  max-height: 100px;
}

.send-btn {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.send-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

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