/* ================================================
   SMS & VOIP PAGE - Modern Interactive Design
   ================================================ */

/* Theme Colors - Complete Color System */
:root {
  /* Primary Colors */
  --primary-teal: #14b8a6;
  --primary-cyan: #06b6d4;
  --teal-dark: #0d9488;
  --teal-darker: #0a7468;
  --cyan-dark: #0284c7;
  --cyan-darker: #0369a1;
  
  /* Accent Colors */
  --purple-accent: #a855f7;
  --purple-dark: #9333ea;
  --purple-darker: #7e22ce;
  --success: #10b981;
  --warning: #fbbf24;
  --error: #ef4444;
  --warning-dark: #f59e0b;
  
  /* Dark Theme Background */
  --dark-bg: #0f1419;
  --dark-bg-light: #1a1f2e;
  --dark-card: #111827;
  --dark-secondary: #1f2937;
  --dark-tertiary: #374151;
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-light: #e5e7eb;
  
  /* Borders */
  --border-light: rgba(20, 184, 166, 0.1);
  --border-medium: rgba(20, 184, 166, 0.2);
}

/* ================================================
   SMS/VOIP LAYOUT & CONTAINERS
   ================================================ */

.sms-voip-content {
  flex: 1;
  display: flex;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-light) 100%);
}

.sms-voip-container {
  width: 100%;
  height: 100%;
  
  overflow-y: auto;
  padding: 28px 32px;
}

.sms-voip-container::-webkit-scrollbar {
  width: 8px;
}

.sms-voip-container::-webkit-scrollbar-track {
  background: rgba(20, 184, 166, 0.05);
}

.sms-voip-container::-webkit-scrollbar-thumb {
  background: rgba(20, 184, 166, 0.3);
  border-radius: 4px;
}

.sms-voip-container::-webkit-scrollbar-thumb:hover {
  background: rgba(20, 184, 166, 0.5);
}

/* Header */
.sms-voip-container h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 28px 0;
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================================
   TAB NAVIGATION
   ================================================ */

.sms-voip-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border-light);
  overflow-x: auto;
  padding-bottom: 16px;
}

.sms-voip-tabs::-webkit-scrollbar {
  height: 4px;
}

.sms-voip-tabs::-webkit-scrollbar-track {
  background: rgba(20, 184, 166, 0.05);
}

.sms-voip-tabs::-webkit-scrollbar-thumb {
  background: rgba(20, 184, 166, 0.3);
  border-radius: 2px;
}

.sms-voip-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  border-radius: 6px;
  color: var(--text-tertiary);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.sms-voip-tab:hover {
  color: var(--primary-teal);
  background: rgba(20, 184, 166, 0.05);
}

.sms-voip-tab.active {
  color: var(--primary-teal);
  border-bottom-color: var(--primary-teal);
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.sms-voip-tab .icon {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

/* ================================================
   TAB CONTENT
   ================================================ */

.sms-tab-content {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.sms-tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================================
   COMMUNICATION CARDS
   ================================================ */

.communication-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.comm-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(6, 182, 212, 0.02) 100%);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.comm-card:hover {
  border-color: var(--primary-teal);
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.08);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.card-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  flex: 1;
}

.card-header .icon {
  width: 24px;
  height: 24px;
  stroke-width: 1.5;
  color: var(--primary-teal);
  flex-shrink: 0;
}

.card-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ================================================
   FORM ELEMENTS
   ================================================ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input,
.form-textarea,
.form-select {
  padding: 10px 12px;
  background: rgba(15, 23, 46, 0.8);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  transition: all 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-teal);
  background: rgba(15, 23, 46, 0.95);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-select {
  cursor: pointer;
}

/* Character Counter */
.char-counter {
  font-size: 12px;
  color: var(--text-tertiary);
  text-align: right;
}

/* ================================================
   BUTTONS
   ================================================ */

.btn-primary,
.btn-secondary {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--teal-dark) 100%);
  color: var(--text-primary);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal-darker) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(20, 184, 166, 0.3);
}

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

.btn-secondary:hover {
  background: rgba(20, 184, 166, 0.08);
  border-color: var(--primary-teal);
  color: var(--primary-teal);
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.15);
}

.btn-primary .icon,
.btn-secondary .icon {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

.call-btn {
  background: linear-gradient(135deg, var(--purple-accent) 0%, var(--purple-dark) 100%);
  color: var(--text-primary);
}

.call-btn:hover {
  background: linear-gradient(135deg, var(--purple-dark) 0%, var(--purple-darker) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
}

/* ================================================
   CHECKBOXES & OPTIONS
   ================================================ */

.call-options,
.checkbox-label {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(15, 23, 46, 0.6);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 13px;
  color: var(--text-secondary);
}

.checkbox-label:hover {
  background: rgba(20, 184, 166, 0.08);
  border-color: var(--primary-teal);
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--primary-teal);
  cursor: pointer;
  width: 16px;
  height: 16px;
}

.checkbox-label span {
  flex: 1;
}

/* ================================================
   COMMUNICATION HISTORY
   ================================================ */

.communication-history {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
}

.communication-history h2,
.contacts-management h2,
.bulk-messaging h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.history-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
}

.history-tab {
  padding: 8px 16px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 4px;
  color: var(--text-tertiary);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.history-tab:hover {
  color: var(--primary-teal);
}

.history-tab.active {
  color: var(--primary-teal);
  border-bottom-color: var(--primary-teal);
}

/* History List */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.history-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: rgba(15, 23, 46, 0.8);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  transition: all 0.2s;
}

.history-item:hover {
  background: rgba(20, 184, 166, 0.1);
  border-color: var(--primary-teal);
}

.history-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.2) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  flex-shrink: 0;
}

.history-icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
  color: var(--primary-teal);
}

.history-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.history-number {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

.history-time {
  font-size: 12px;
  color: var(--text-tertiary);
}

.history-message {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}

.history-status {
  display: inline-block;
  width: fit-content;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
}

.history-status.delivered {
  background: rgba(20, 184, 166, 0.2);
  color: var(--primary-teal);
}

.history-status.completed {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
}

/* ================================================
   CONTACT MANAGEMENT
   ================================================ */

.contacts-management {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
}

.management-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 8px;
}

.management-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.section-subtitle {
  font-size: 13px;
  color: var(--text-tertiary);
  margin: 0;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.card-header > div {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}

.card-header .icon {
  width: 24px;
  height: 24px;
  stroke-width: 1.5;
  color: var(--primary-teal);
  flex-shrink: 0;
}

.form-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0 0 6px 0;
  font-style: italic;
}

.csv-format {
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(20, 184, 166, 0.05);
  padding: 8px 12px;
  border-radius: 4px;
  border-left: 2px solid var(--primary-teal);
  margin: 8px 0;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.contacts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 0;
  width: 100%;
}

.contacts-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(6, 182, 212, 0.02) 100%);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.contacts-card:hover {
  border-color: var(--primary-teal);
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.08);
}

/* Upload Zone */
.upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px 20px;
  background: rgba(20, 184, 166, 0.05);
  border: 2px dashed var(--border-medium);
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-zone:hover {
  background: rgba(20, 184, 166, 0.1);
  border-color: var(--primary-teal);
}

.upload-icon {
  width: 32px;
  height: 32px;
  stroke-width: 1.5;
  color: var(--primary-teal);
}

.upload-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.upload-subtext {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}

.upload-info {
  font-size: 12px;
  color: var(--text-tertiary);
  padding: 12px;
  background: rgba(20, 184, 166, 0.05);
  border-radius: 6px;
  border-left: 3px solid var(--primary-teal);
}

.upload-info p {
  margin: 4px 0;
}

.upload-info strong {
  color: var(--text-primary);
}

.info-text {
  font-style: italic;
}

.upload-status {
  padding: 12px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 6px;
  color: var(--success);
  font-size: 13px;
  text-align: center;
}

/* Contact List Section */
.contacts-list-section {
  padding: 24px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(6, 182, 212, 0.02) 100%);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.contacts-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.contacts-list-header > div {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contacts-list-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.list-subtitle {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}

.contacts-count-display {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: rgba(20, 184, 166, 0.05);
  border: 1px solid var(--border-light);
  border-radius: 8px;
}

.count-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--primary-cyan) 100%);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 700;
}

.contacts-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-tertiary);
  font-size: 14px;
}

/* ================================================
   BULK MESSAGING
   ================================================ */

.bulk-messaging {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
}

.bulk-card {
  padding: 24px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(6, 182, 212, 0.02) 100%);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bulk-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.bulk-actions .btn-secondary,
.bulk-actions .btn-primary {
  flex: 1;
}

/* ================================================
   RESPONSIVE DESIGN
   ================================================ */

/* 1024px Breakpoint */
@media (max-width: 1024px) {
  .sms-voip-container {
    padding: 20px 24px;
  }

  .communication-grid,
  .contacts-grid {
    grid-template-columns: 1fr;
  }

  .sms-voip-tabs {
    flex-direction: column;
    gap: 8px;
  }

  .sms-voip-tab {
    width: 100%;
    justify-content: flex-start;
  }
}

/* 768px Breakpoint */
@media (max-width: 768px) {
  .sms-voip-container {
    padding: 16px 18px;
  }

  .sms-voip-container h1 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .sms-voip-tabs {
    gap: 8px;
    padding-bottom: 12px;
  }

  .sms-voip-tab {
    padding: 8px 12px;
    font-size: 12px;
    gap: 6px;
  }

  .sms-voip-tab .icon {
    width: 16px;
    height: 16px;
  }

  .communication-grid,
  .contacts-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .comm-card,
  .contacts-card,
  .contacts-list-section,
  .bulk-card {
    padding: 16px;
  }

  .card-header h3 {
    font-size: 14px;
  }

  .card-subtitle,
  .section-subtitle,
  .list-subtitle {
    font-size: 11px;
  }

  .form-hint {
    font-size: 11px;
    margin-bottom: 4px;
  }

  .contacts-list-header > div {
    gap: 2px;
  }

  .contacts-count-display {
    padding: 10px 12px;
    margin-bottom: 12px;
  }

  .count-label {
    font-size: 12px;
  }
    gap: 12px;
    padding: 12px;
  }

  .history-icon {
    width: 36px;
    height: 36px;
  }

  .form-input,
  .form-textarea,
  .form-select {
    font-size: 14px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 8px 16px;
    font-size: 12px;
  }

  .bulk-actions {
    flex-direction: column;
    gap: 10px;
  }

  .bulk-actions .btn-secondary,
  .bulk-actions .btn-primary {
    width: 100%;
  }
}

/* 480px Breakpoint */
@media (max-width: 480px) {
  .sms-voip-container {
    padding: 12px 14px;
  }

  .sms-voip-container h1 {
    font-size: 18px;
    margin-bottom: 16px;
  }

  .sms-voip-tabs {
    gap: 6px;
    padding-bottom: 10px;
    overflow-x: auto;
  }

  .sms-voip-tab {
    padding: 6px 10px;
    font-size: 11px;
    gap: 4px;
    min-width: fit-content;
  }

  .sms-voip-tab .icon {
    width: 14px;
    height: 14px;
  }

  .communication-grid,
  .contacts-grid {
    gap: 12px;
  }

  .comm-card,
  .contacts-card,
  .contacts-list-section,
  .bulk-card {
    padding: 12px;
    gap: 12px;
  }

  .card-header {
    padding-bottom: 10px;
  }

  .card-header h3 {
    font-size: 13px;
  }

  .card-subtitle,
  .section-subtitle,
  .list-subtitle {
    font-size: 10px;
  }

  .form-hint {
    font-size: 10px;
    margin-bottom: 4px;
  }

  .csv-format {
    font-size: 11px;
    padding: 6px 10px;
    margin: 6px 0;
  }

  .contacts-list-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .contacts-list-header > div {
    width: 100%;
  }

  .contacts-list-header .btn-secondary {
    width: 100%;
  }

  .contacts-count-display {
    padding: 8px 10px;
    font-size: 12px;
  }

  .count-label {
    font-size: 11px;
  }
    gap: 10px;
    padding: 10px;
  }

  .history-icon {
    width: 32px;
    height: 32px;
  }

  .history-icon svg {
    width: 18px;
    height: 18px;
  }

  .history-number {
    font-size: 12px;
  }

  .history-message {
    font-size: 12px;
  }

  .form-group {
    gap: 6px;
  }

  .form-group label {
    font-size: 12px;
  }

  .form-input,
  .form-textarea,
  .form-select {
    padding: 8px 10px;
    font-size: 12px;
  }

  .form-textarea {
    min-height: 60px;
  }

  .char-counter {
    font-size: 11px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 8px 12px;
    font-size: 11px;
    gap: 6px;
  }

  .btn-primary .icon,
  .btn-secondary .icon {
    width: 14px;
    height: 14px;
  }

  .checkbox-label {
    padding: 8px 10px;
    font-size: 12px;
    gap: 8px;
  }

  .checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
  }

  .history-tabs {
    gap: 8px;
    padding-bottom: 10px;
  }

  .history-tab {
    padding: 6px 12px;
    font-size: 12px;
  }

  .upload-zone {
    padding: 24px 16px;
    gap: 12px;
  }

  .upload-icon {
    width: 28px;
    height: 28px;
  }

  .upload-text {
    font-size: 13px;
  }

  .upload-subtext {
    font-size: 11px;
  }

  .upload-info {
    font-size: 11px;
  }

  .contacts-list-header {
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 12px;
  }

  .contacts-list-header h3 {
    font-size: 14px;
  }

  .count-badge {
    width: 22px;
    height: 22px;
    font-size: 10px;
  }

  .bulk-actions {
    gap: 8px;
  }

  .bulk-actions .btn-secondary,
  .bulk-actions .btn-primary {
    width: 100%;
    padding: 8px 12px;
    font-size: 11px;
  }
}