/* ================================================
   CLIENTS MANAGEMENT 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);
}

/* ================================================
   CLIENTS CONTAINER
   ================================================ */

.clients-container {
  padding: 32px;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-light) 100%);
  min-height: 100vh;
  overflow-y: auto;
}

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

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

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

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

/* ================================================
   HEADER SECTION
   ================================================ */

.clients-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    gap: 0;
}

.clients-header h2 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  flex: 1;
}

#refresh-clients-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--teal-dark) 100%);
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
  width: auto;
}

#refresh-clients-btn: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);
}

#refresh-clients-btn:active {
  transform: translateY(0);
}

#refresh-clients-btn .icon {
  width: 18px;
  height: 18px;
  stroke-width: 2;
  animation: spin 0.6s linear;
}

#refresh-clients-btn:hover .icon {
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ================================================
   STATS ROW
   ================================================ */

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.stat-box {
  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-light);
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.stat-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
  transition: left 0.3s ease;
  pointer-events: none;
}

.stat-box:hover::before {
  left: 100%;
}

.stat-box:hover {
  border-color: var(--primary-teal);
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.12) 0%, rgba(6, 182, 212, 0.06) 100%);
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(20, 184, 166, 0.2);
}

.stat-box h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  margin: 0 0 14px 0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-value {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  transition: all 0.3s ease;
}

.stat-box:hover .stat-value {
  font-size: 40px;
}

/* ================================================
   TABS SECTION
   ================================================ */

.tabs-container {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
  overflow-x: auto;
}

.client-tab {
  padding: 10px 16px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
  position: relative;
}

.client-tab:hover {
  border-color: var(--primary-teal);
  color: var(--primary-teal);
  background: rgba(20, 184, 166, 0.05);
  transform: translateY(-0px);
}

.client-tab.active {
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.15) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-color: var(--primary-teal);
  color: var(--primary-teal);
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.2);
}

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

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

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

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

/* ================================================
   UPLOAD STATUS
   ================================================ */

.upload-status {
  margin-bottom: 20px;
  padding: 16px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success);
  border-radius: 8px;
  color: var(--success);
  font-size: 13px;
  font-weight: 600;
  display: none;
}

.upload-status.show {
  display: block;
}

.upload-status.error {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--error);
  color: var(--error);
}

/* ================================================
   SEARCH & FILTER ROW
   ================================================ */

.search-filter-row {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.search-input,
.filter-select {
  padding: 10px 14px;
  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;
}

.search-input {
  flex: 1;
}

.search-input:focus,
.filter-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);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.filter-select {
  min-width: 150px;
}

/* ================================================
   CLIENTS TABLE
   ================================================ */

.clients-table {
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(6, 182, 212, 0.02) 100%);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 24px;
}

.clients-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.clients-table thead {
  background: rgba(20, 184, 166, 0.08);
  border-bottom: 1px solid var(--border-medium);
}

.clients-table th {
  padding: 14px 16px;
  text-align: left;
  color: var(--text-secondary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 11px;
}

.clients-table tbody tr {
  border-bottom: 1px solid var(--border-light);
  transition: all 0.2s;
}

.clients-table tbody tr:hover {
  background: rgba(20, 184, 166, 0.05);
}

.clients-table tbody tr:last-child {
  border-bottom: none;
}

.clients-table td {
  padding: 14px 16px;
  color: var(--text-secondary);
}

.empty-state {
  text-align: center;
  color: var(--text-tertiary);
  padding: 40px 16px !important;
  font-style: italic;
}

/* Status Badge */
.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.status-badge.prospect {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
}

.status-badge.inactive {
  background: rgba(107, 114, 128, 0.15);
  color: #9ca3af;
}

/* Tags */
.tags-cell {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-block;
  padding: 3px 8px;
  background: rgba(168, 85, 247, 0.15);
  color: var(--purple-accent);
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
}

/* Actions */
.actions-cell {
  display: flex;
  gap: 8px;
}

.action-btn {
  padding: 6px 10px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  color: var(--text-tertiary);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn:hover {
  border-color: var(--primary-teal);
  color: var(--primary-teal);
  background: rgba(20, 184, 166, 0.08);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.15);
}

.action-btn.delete {
  color: var(--error);
  border-color: rgba(239, 68, 68, 0.3);
}

.action-btn.delete:hover {
  color: var(--error);
  border-color: var(--error);
  background: rgba(239, 68, 68, 0.1);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.15);
}

/* ================================================
   CARD STYLING
   ================================================ */

.card {
  padding: 28px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(6, 182, 212, 0.02) 100%);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.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, 0.15);
}

.card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 20px 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ================================================
   FORM STYLING
   ================================================ */

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  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-control: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-control::placeholder {
  color: var(--text-tertiary);
}

/* ================================================
   UPLOAD ZONE
   ================================================ */

.upload-zone {
  padding: 40px;
  background: rgba(20, 184, 166, 0.05);
  border: 2px dashed var(--border-medium);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 20px;
}

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

.upload-zone.dragover {
  border-color: var(--primary-teal);
  background: rgba(20, 184, 166, 0.12);
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--primary-teal);
  margin-bottom: 12px;
  stroke-width: 1.5;
}

.upload-zone p {
  margin: 0;
  color: var(--text-secondary);
}

/* ================================================
   BUTTON STYLES
   ================================================ */

.btn-primary,
.btn-secondary {
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--teal-dark) 100%);
  color: var(--text-primary);
  width: 100%;
  margin-top: 12px;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal-darker) 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(20, 184, 166, 0.3);
}

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

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  margin-top: 20px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-secondary:hover {
  background: rgba(20, 184, 166, 0.08);
  border-color: var(--primary-teal);
  color: var(--primary-teal);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(20, 184, 166, 0.2);
}

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

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

  .clients-header {
    flex-wrap: wrap;
    padding: 20px;
  }

  .clients-header h2 {
    font-size: 24px;
    width: 100%;
    margin-bottom: 12px;
  }

  #refresh-clients-btn {
    flex: 1;
    min-width: 140px;
    justify-content: center;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
  }

  .stat-box {
    padding: 16px;
  }

  .stat-box h4 {
    font-size: 11px;
    margin-bottom: 10px;
  }

  .stat-value {
    font-size: 28px;
  }

  .stat-box:hover .stat-value {
    font-size: 32px;
  }

  .card {
    padding: 20px;
  }

  .card h3 {
    font-size: 18px;
    margin-bottom: 16px;
  }

  .clients-table {
    font-size: 12px;
  }

  .clients-table th,
  .clients-table td {
    padding: 12px 12px;
  }
}

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

  .clients-header {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 12px;
  }

  .clients-header h2 {
    flex-direction: column;
    flex-wrap: wrap;
    font-size: 20px;
    width: 100%;
    margin-bottom: 8px;
  }

  #refresh-clients-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
  }

  .stat-box {
    padding: 14px;
  }

  .stat-box h4 {
    font-size: 11px;
    margin-bottom: 8px;
  }

  .stat-value {
    font-size: 24px;
  }

  .stat-box:hover .stat-value {
    font-size: 28px;
  }

  .tabs-container {
    gap: 8px;
    margin-bottom: 16px;
  }

  .client-tab {
    padding: 8px 12px;
    font-size: 12px;
  }

  .search-filter-row {
    flex-direction: column;
    gap: 12px;
  }

  .filter-select {
    width: 100%;
  }

  .clients-table {
    overflow-x: auto;
    margin-bottom: 16px;
  }

  .clients-table table {
    min-width: 600px;
  }

  .clients-table th,
  .clients-table td {
    padding: 10px 8px;
    font-size: 11px;
  }

  .card {
    padding: 16px;
  }

  .card h3 {
    font-size: 16px;
    margin-bottom: 12px;
  }

  .form-group {
    margin-bottom: 14px;
  }

  .form-group label {
    font-size: 12px;
    margin-bottom: 6px;
  }

  .form-control {
    padding: 8px 10px;
    font-size: 12px;
  }

  .upload-zone {
    padding: 30px 20px;
    margin-bottom: 16px;
  }

  .upload-icon {
    width: 40px;
    height: 40px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 10px 16px;
    font-size: 12px;
  }

  .btn-primary {
    margin-top: 10px;
  }

  .btn-secondary {
    margin-top: 12px;
  }

  .tags-cell {
    gap: 4px;
  }

  .tag {
    padding: 2px 6px;
    font-size: 9px;
  }

  .actions-cell {
    gap: 6px;
  }

  .action-btn {
    padding: 5px 8px;
    font-size: 10px;
  }
}

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

  .clients-header {
    padding: 12px;
    gap: 10px;
  }

  .clients-header h2 {
    font-size: 18px;
    margin-bottom: 10px;
  }

  #refresh-clients-btn {
    padding: 10px 16px;
    font-size: 12px;
  }

  #refresh-clients-btn .icon {
    width: 16px;
    height: 16px;
  }

  .stats-row {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 16px;
  }

  .stat-box {
    padding: 12px;
  }

  .stat-box h4 {
    font-size: 10px;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
  }

  .stat-value {
    font-size: 20px;
  }

  .stat-box:hover .stat-value {
    font-size: 24px;
  }

  .tabs-container {
    gap: 6px;
    margin-bottom: 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .client-tab {
    padding: 6px 10px;
    font-size: 11px;
    border-radius: 4px;
  }

  .search-filter-row {
    gap: 8px;
  }

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

  .filter-select {
    font-size: 11px;
  }

  .clients-table {
    margin-bottom: 12px;
    border-radius: 8px;
  }

  .clients-table table {
    min-width: 500px;
  }

  .clients-table th,
  .clients-table td {
    padding: 8px 6px;
    font-size: 10px;
  }

  .clients-table th {
    font-size: 9px;
  }

  .empty-state {
    padding: 30px 12px !important;
  }

  .status-badge {
    padding: 3px 8px;
    font-size: 9px;
  }

  .card {
    padding: 12px;
    margin-bottom: 16px;
  }

  .card h3 {
    font-size: 14px;
    margin-bottom: 10px;
  }

  .card p {
    font-size: 12px;
  }

  .form-group {
    margin-bottom: 12px;
  }

  .form-group label {
    font-size: 11px;
    margin-bottom: 5px;
  }

  .form-control {
    padding: 7px 8px;
    font-size: 12px;
  }

  .upload-zone {
    padding: 24px 16px;
    margin-bottom: 12px;
    border-radius: 8px;
  }

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

  .upload-zone p {
    font-size: 12px;
  }

  .upload-zone p:last-child {
    font-size: 10px;
  }

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

  .btn-primary {
    margin-top: 8px;
  }

  .btn-secondary {
    margin-top: 10px;
    width: 100%;
  }

  .tags-cell {
    gap: 3px;
  }

  .tag {
    padding: 2px 5px;
    font-size: 8px;
  }

  .actions-cell {
    gap: 4px;
    flex-wrap: wrap;
  }

  .action-btn {
    padding: 4px 6px;
    font-size: 9px;
  }

  pre {
    font-size: 10px !important;
    padding: 8px !important;
  }
}