:root {
    --bg-primary: linear-gradient(135deg, #3679b5 0%, #832ddb 100%);
    --bg-body: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --contact-bg: #ffffff;
    --contact-list: #e7e7e7;
    --contact-border: #25D366;
    --upload-border: #dee2e6;
    --upload-hover: #f8f9fa;
    --upload-dragover: #e8f5e8;
}

[data-theme="dark"] {
    --bg-body: #1a1a1a;
    --bg-card: #2d2d30;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --border-color: #444444;
    --contact-bg: #2d2d30;
    --contact-list: #3d3d3d;
    --contact-border: #25D366;
    --upload-border: #444444;
    --upload-hover: #3c3c3f;
    --upload-dragover: #2d4a2d;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.bg-gradient-primary {
    background: var(--bg-primary);
}

.card {
    box-shadow: 0 0.15rem 1.75rem 0 rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-control,
.form-select {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-card);
    border-color: #25D366;
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 211, 102, 0.25);
}

.form-control::placeholder {
    color: var(--text-secondary);
}

.btn-whatsapp {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border: none;
    color: white;
}

.btn-whatsapp:hover {
    background: linear-gradient(135deg, #128C7E 0%, #075E54 100%);
    color: white;
}

.contact-item {
    background: var(--contact-list);
    border-radius: 8px;
    margin-bottom: 5px;
    padding: 8px 12px;
    border-left: 4px solid var(--contact-border);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

/* .progress-container {
    display: none;
} */

.stats-card {
    background: var(--bg-primary);
    color: white;
}

.file-upload-area {
    border: 2px dashed var(--upload-border);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.file-upload-area:hover {
    border-color: #25D366;
    background-color: var(--upload-hover);
}

.file-upload-area.dragover {
    border-color: #25D366;
    background-color: var(--upload-dragover);
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1050;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--bg-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.navbar-dark {
    background: var(--bg-primary) !important;
}

.text-muted {
    color: var(--text-secondary) !important;
}

.bg-light {
    background-color: var(--upload-hover) !important;
}

#contactsList {
    background-color: var(--contact-bg) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary);
}

.badge {
    transition: all 0.3s ease;
}

[data-theme="dark"] .progress {
    background-color: #444444;
}

[data-theme="dark"] .modal-content {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .border {
    border-color: var(--border-color) !important;
}

.whatsapp-preview {
    background: linear-gradient(180deg, #075e54 0%, #128c7e 100%);
    border-radius: 20px;
    padding: 20px;
    /* max-width: 350px; */
    margin: 0 auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.whatsapp-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: white;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.whatsapp-avatar {
    width: 40px;
    height: 40px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-weight: bold;
    color: white;
}

.whatsapp-contact-info h6 {
    margin: 0;
    font-size: 16px;
    font-weight: 500;
}

.whatsapp-contact-info small {
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
}

.whatsapp-message {
    background: #dcf8c6;
    border-radius: 18px 18px 4px 18px;
    padding: 12px 16px;
    margin-left: auto;
    max-width: 85%;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    color: #333;
    line-height: 1.4;
}

.whatsapp-message::after {
    content: '';
    position: absolute;
    bottom: 0px;
    right: -6px;
    width: 0;
    height: 0;
    border-bottom: 8px solid #dcf8c6;
    border-right: 8px solid transparent;
}

.whatsapp-media {
    border-radius: 12px;
    max-width: 100%;
    margin-bottom: 8px;
    display: block;
}

.whatsapp-time {
    font-size: 11px;
    color: #667781;
    text-align: right;
    margin-top: 6px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
}

.whatsapp-time i {
    color: #4fc3f7;
}

.preview-placeholder {
    text-align: center;
    padding: 40px 20px;
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-body .alert {
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.modal-body .alert ol li {
    margin-bottom: 0.5rem;
}

#connectionModal .modal-dialog {
    max-width: 600px;
}

/* PWA Styles */
@media (display-mode: standalone) {
  body {
    user-select: none;
    -webkit-user-select: none;
  }
  
  .container-fluid {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .theme-toggle {
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
  }
  
  .container-fluid {
    padding-left: 10px;
    padding-right: 10px;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .table-responsive {
    font-size: 0.85rem;
  }
}

/* Install button animation */
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.btn-install {
  animation: pulse 2s infinite;
}

/* Changelog Modal */
#changelogModal .modal-dialog {
    max-width: 800px;
}

#changelogModal .badge {
    min-width: 45px;
}

#changelogModal ul li {
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
}

#changelogModal h6 {
    color: var(--text-primary);
    font-weight: 600;
}

/* QR Code Timer */
.qr-code-container .badge {
    font-size: 0.75rem;
    padding: 0.5rem;
}

/* Versão badge no header */
.navbar .badge {
    font-size: 0.8rem;
}

/* Update banner animation */
#updateBanner {
  animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

#updateBanner .btn {
  transition: all 0.2s ease;
}

#updateBanner .btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Múltiplas Mensagens */
.whatsapp-preview-mini {
    background: linear-gradient(180deg, #075e54 0%, #128c7e 100%);
    border-radius: 15px;
    padding: 15px;
    color: white;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.875rem;
}

.whatsapp-preview-mini .preview-placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.whatsapp-preview-mini .whatsapp-message-mini {
    background: #dcf8c6;
    border-radius: 12px 12px 4px 12px;
    padding: 8px 12px;
    color: #333;
    text-align: left;
    word-wrap: break-word;
    max-width: 100%;
}

.whatsapp-preview-mini .media-preview-mini {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 8px;
}

.msg-file-preview {
    background: var(--upload-hover);
    border-radius: 8px;
    padding: 0.75rem;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
}

.msg-file-preview img {
    max-width: 100px;
    max-height: 100px;
    border-radius: 4px;
    margin-right: 0.5rem;
}

.msg-file-preview video {
    max-width: 100px;
    max-height: 100px;
    border-radius: 4px;
    margin-right: 0.5rem;
}

.nav-tabs .nav-link {
    position: relative;
}

.nav-tabs .nav-link .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    font-size: 0.6rem;
}

/* Tema escuro para as abas */
[data-theme="dark"] .nav-tabs .nav-link {
    color: var(--text-secondary);
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .nav-tabs .nav-link.active {
    color: #25D366;
    background-color: var(--bg-card);
    border-color: #25D366 #25D366 var(--bg-card);
}

[data-theme="dark"] .tab-content {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .bg-light {
    background-color: var(--upload-hover) !important;
}