/* Resend-inspired Dark Theme */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

:root {
  --color-black: #000000;
  --color-gray-950: #0a0a0a;
  --color-gray-900: #171717;
  --color-gray-800: #262626;
  --color-gray-700: #404040;
  --color-gray-600: #525252;
  --color-gray-500: #737373;
  --color-gray-400: #a3a3a3;
  --color-gray-300: #d4d4d4;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f5;
  --color-white: #ffffff;
  --color-primary: #ffffff;
  --color-primary-hover: #f5f5f5;
  --color-border: #262626;
  --color-border-light: #404040;
  --color-accent: #b96825;
  --color-accent-hover: #414141;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
}

body {
  background-color: var(--color-black);
  color: var(--color-white);
  line-height: 1.6;
  font-size: 14px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-white);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

/* Sidebar enhancements */
.sidebar {
  width: 280px;
  background: linear-gradient(135deg, var(--color-gray-950) 0%, var(--color-gray-900) 100%);
  border-right: 1px solid var(--color-border);
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1001;
  background: linear-gradient(135deg, var(--color-accent) 0%, #16a34a 100%);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  color: white;
  font-size: 18px;
  cursor: pointer;
  box-shadow: 
    0 4px 15px rgba(34, 197, 94, 0.3),
    0 2px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
  background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
  transform: scale(1.05);
  box-shadow: 
    0 6px 20px rgba(34, 197, 94, 0.4),
    0 4px 12px rgba(0, 0, 0, 0.3);
}

.mobile-menu-btn:active {
  transform: scale(0.95);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.sidebar-header h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #a3a3a3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--color-gray-800);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #16a34a 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.sidebar-nav {
  flex: 1;
  padding: 20px;
}

.sidebar-nav h3 {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  padding-left: 8px;
}

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

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 8px;
  color: var(--color-gray-400);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-200) 100%);
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: -1;
}

.nav-link::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
  z-index: 1;
  pointer-events: none;
}

.nav-link:hover {
  color: var(--color-white);
  border-color: var(--color-border-light);
  transform: translateX(4px) translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.nav-link:hover::before {
  opacity: 0.15;
}

.nav-link:hover::after {
  left: 100%;
}

.nav-link.active {
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-white) 0%, #f5f5f5 100%);
  border-color: var(--color-accent);
}

.nav-link.active::before {
  opacity: 0;
}

.nav-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
  transition: all 0.2s ease;
  transform-origin: center;
}

.nav-link:hover .nav-icon {
  transform: scale(1.1);
}

/* Stats Cards */
.stats-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.stat-card:hover::before {
  opacity: 0.1;
}

.stat-success::before {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0d6d30 100%);
}

.stat-error::before {
  background: linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);
}

.stat-total::before {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

.stat-icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background-color: var(--color-gray-700);
}

.stat-success .stat-icon {
  background: linear-gradient(135deg, var(--color-accent) 0%, #094921 100%);
}

.stat-error .stat-icon {
  background: linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);
}

.stat-total .stat-icon {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

.stat-content {
  flex: 1;
}

.stat-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--color-gray-400);
  font-weight: 500;
  margin-top: 4px;
}

/* Email Cards */
.emails-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.email-card {
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.email-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-200) 100%);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.email-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-light);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.email-card:hover::before {
  opacity: 0.03;
}

.email-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 16px;
}

.email-subject {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.4;
  flex: 1;
}

.email-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.email-status.status-sent {
  background: white;
  color: black;
}

.email-status.status-failed {
  background: linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.status-icon {
  font-size: 10px;
}

.email-meta {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
  padding: 12px;
  background-color: var(--color-gray-950);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.meta-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-size: 11px;
  color: var(--color-gray-500);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.meta-value {
  font-size: 13px;
  color: var(--color-gray-300);
  font-weight: 500;
  word-break: break-all;
}

.email-preview {
  color: var(--color-gray-400);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 16px;
  padding: 12px;
  background-color: var(--color-gray-950);
  border-radius: 6px;
  border-left: 3px solid var(--color-accent);
}

.email-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* Enhanced Empty States */
.empty-state, .loading-state, .error-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--color-gray-500);
}

.empty-icon, .loading-spinner, .error-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
}

.loading-spinner {
  animation: spin 2s linear infinite;
}

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

.empty-state h3, .error-state h3 {
  margin: 0 0 8px 0;
  font-size: 18px;
  color: var(--color-gray-300);
}

.empty-state p, .loading-state p, .error-state p {
  margin: 0 0 20px 0;
  font-size: 14px;
  color: var(--color-gray-500);
}

/* Enhanced Modal */
.modal-large {
  max-width: 800px;
}

.email-details {
  padding: 24px;
}

.email-meta {
  background-color: var(--color-gray-900);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.meta-item {
  font-size: 14px;
}

.meta-item strong {
  color: var(--color-gray-300);
  margin-right: 8px;
}

.email-body {
  background-color: var(--color-gray-950);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 20px;
  min-height: 200px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-gray-300);
}

/* Enhanced Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  color: var(--color-white);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
  min-height: 40px;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  border-color: var(--color-border-light);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--color-white) 0%, #f5f5f5 100%);
  color: var(--color-black);
  border-color: var(--color-white);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-primary::before {
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #f5f5f5 0%, #e5e5e5 100%);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
  border-color: #e5e5e5;
}

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

/* Special emoji animations */
.btn:hover span:first-child:not(.nav-icon) {
  animation: emoji-dance 0.8s ease-in-out;
}

.nav-link:active .nav-icon {
  animation: emoji-dance 0.5s ease;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  color: var(--color-white);
}

.btn-secondary::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.btn-secondary:hover {
  transform: translateY(-1px);
}

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

.btn-danger {
  background: linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);
  border-color: var(--color-error);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-danger::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.btn-danger:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
  transform: translateY(-1px);
  border-color: #b91c1c;
}

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

/* Enhanced Header */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-gray-950) 0%, var(--color-gray-900) 100%);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.header-left h2 {
  margin: 0 0 8px 0;
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-300) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  margin: 0;
  font-size: 14px;
  color: var(--color-gray-400);
  font-weight: 500;
}

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

.filter-select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  color: var(--color-white);
  font-size: 13px;
  min-width: 150px;
}

.main-content {
  flex: 1;
  background-color: var(--color-black);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow-y: auto;
}

/* Cards/Sections */
section {
  background-color: var(--color-gray-950);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

section:hover {
  border-color: var(--color-border-light);
}

section h2 {
  margin-bottom: 20px;
  font-size: 18px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background-color: transparent;
  color: var(--color-white);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
  min-height: 40px;
}

.btn:hover {
  background-color: var(--color-gray-900);
  border-color: var(--color-border-light);
  transform: translateY(-1px);
}

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

.btn-primary {
  background-color: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
  font-weight: 500;
}

.btn-primary:hover {
  background-color: var(--color-gray-200);
  border-color: var(--color-gray-200);
  color: var(--color-black);
}

.btn-secondary {
  color: var(--color-white);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  min-height: 32px;
}

.btn-danger {
  background-color: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-white);
}

.btn-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* Enhanced Forms */
form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gray-300);
  display: flex;
  align-items: center;
  gap: 8px;
}

input, select, textarea {
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-gray-950) 0%, var(--color-gray-900) 100%);
  color: var(--color-white);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-gray-100);
  box-shadow: 
    inset 0 1px 2px rgba(255, 255, 255, 0.3),
    0 0 0 3px rgba(255, 255, 255, 0.1),
    0 1px 3px rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

input::placeholder, textarea::placeholder {
  color: var(--color-gray-500);
  font-style: italic;
}

textarea {
  resize: vertical;
  min-height: 120px;
  font-family: inherit;
  line-height: 1.5;
}

select {
  cursor: pointer;
  background-color: var(--color-gray-950);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 14px 16px;
  color: var(--color-white);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
  appearance: none;
  background-image: 
    linear-gradient(45deg, transparent 50%, var(--color-gray-400) 50%),
    linear-gradient(135deg, var(--color-gray-400) 50%, transparent 50%);
  background-position: 
    calc(100% - 20px) calc(1em + 2px),
    calc(100% - 15px) calc(1em + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 40px;
}

select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 
    0 0 0 3px rgba(34, 197, 94, 0.1),
    0 1px 3px rgba(34, 197, 94, 0.2);
  transform: translateY(-1px);
}

select:hover {
  border-color: var(--color-accent-muted);
  background-color: var(--color-gray-900);
}

select option {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: 12px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
  }
  
  .form-actions {
    flex-direction: column;
  }
}

/* Lists and items */
#profilesList, #contactsList {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

#profilesList > div, #contactsList > div {
  padding: 12px 16px;
  background-color: var(--color-gray-900);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.15s ease;
}

#profilesList > div:hover, #contactsList > div:hover {
  background-color: var(--color-gray-800);
  border-color: var(--color-border-light);
}

.sent-email-item {
  background-color: var(--color-gray-900);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 12px;
  font-size: 14px;
  transition: all 0.15s ease;
}

.sent-email-item:hover {
  background-color: var(--color-gray-800);
  border-color: var(--color-border-light);
}

.sent-email-item strong {
  color: var(--color-gray-300);
  font-weight: 500;
}

.sent-email-item hr {
  border: none;
  height: 1px;
  background-color: var(--color-border);
  margin: 12px 0 0 0;
}

/* Login page */
.login-container {
  margin: auto;
  background-color: var(--color-gray-950);
  border: 1px solid var(--color-border);
  padding: 48px;
  border-radius: 12px;
  text-align: center;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.login-container h1 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 32px;
  color: var(--color-white);
}

.login-container .btn {
  width: 100%;
  margin-bottom: 12px;
  padding: 14px 24px;
  font-size: 15px;
}

/* Status indicators */
.status-sent {
  color: var(--color-accent);
  font-weight: 500;
}

.status-failed {
  color: var(--color-error);
  font-weight: 500;
}

/* Mobile overlay */
.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Responsive Design */
@media (max-width: 1000px) {
  body {
    flex-direction: column;
  }
  
  /* Show mobile menu button */
  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* Hide sidebar by default on mobile */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 300px;
    transform: translateX(-100%);
    z-index: 1000;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
  }
  
  /* Show sidebar when active */
  .sidebar.active {
    transform: translateX(0);
  }
  
  /* Adjust main content to account for mobile button */
  .main-content {
    padding-top: 80px;
    margin-left: 0;
    width: 100%;
  }
  
  /* Mobile menu button animation */
  .mobile-menu-btn.active {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  }
  
  .mobile-menu-btn.active i::before {
    content: '\f00d'; /* Font Awesome close icon */
  }
  
  /* Responsive nav links */
  .nav-links {
    padding: 0 10px;
  }
  
  .nav-link {
    padding: 16px 20px;
    margin: 4px 0;
    font-size: 16px;
  }
  
  .nav-link i {
    font-size: 18px;
    margin-right: 12px;
  }
  
  /* Responsive forms */
  .form-row {
    flex-direction: column;
  }
  
  .form-actions {
    flex-direction: column;
  }
}

/* Ulteriori regole per schermi molto piccoli */
@media (max-width: 500px) {
  .mobile-menu-btn {
    top: 15px;
    left: 15px;
    width: 45px;
    height: 45px;
    font-size: 16px;
  }
  
  .sidebar {
    width: 280px;
  }
  
  .nav-link {
    padding: 14px 16px;
    font-size: 15px;
  }
  
  .nav-link i {
    font-size: 16px;
    margin-right: 10px;
  }
  
  .main-content {
    padding: 70px 15px 20px 15px;
  }
  
  /* Responsive forms for small screens */
  .form-row {
    gap: 8px;
  }
  
  .custom-select {
    width: 100%;
  }
  
  /* Cards grid responsive */
  .profiles-grid,
  .contacts-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .emails-grid {
    grid-template-columns: 1fr;
  }
  
  /* Hide complex shadows on mobile for performance */
  .btn,
  .custom-select select,
  .nav-link {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2) !important;
  }
  
  .btn:hover,
  .custom-select select:hover,
  .nav-link:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
  }
}

@media (max-width: 480px) {
  .login-container {
    padding: 24px 20px;
  }
  
  .main-content {
    padding: 12px;
    gap: 16px;
  }
  
  section {
    padding: 16px;
  }
  
  .sidebar {
    padding: 12px;
  }
  
  .modal-content {
    width: 98%;
    margin: 8px;
  }
  
  .modal form {
    padding: 16px;
  }
  
  .profile-card, .contact-card {
    padding: 16px;
  }
  
  .search-input {
    max-width: 100%;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-950);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-700);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-600);
}

/* Selection */
::selection {
  background-color: var(--color-white);
  color: var(--color-black);
}

/* Navigation */
.nav-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-link {
  padding: 12px 16px;
  border-radius: 6px;
  color: var(--color-gray-400);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.nav-link:hover {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  border-color: var(--color-border);
}

.nav-link.active {
  background-color: var(--color-white);
  color: var(--color-gray-700);
  border-color: var(--color-border-light);
}

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

.section-header h2 {
  margin: 0;
}

/* Search Bar */
.search-bar {
  margin-bottom: 24px;
}

.search-input {
  width: 100%;
  max-width: 400px;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background-color: var(--color-gray-950);
  color: var(--color-white);
  font-size: 14px;
  transition: all 0.15s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

/* Grid Layouts */
.profiles-grid, .contacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.profile-card, .contact-card {
  background-color: var(--color-gray-900);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 20px;
  transition: all 0.15s ease;
  position: relative;
}

.profile-card:hover, .contact-card:hover {
  background-color: var(--color-gray-800);
  border-color: var(--color-border-light);
  transform: translateY(-2px);
}

.profile-card h3, .contact-card h3 {
  margin: 0 0 8px 0;
  font-size: 16px;
  font-weight: 600;
}

.profile-card p, .contact-card p {
  margin: 0 0 16px 0;
  color: var(--color-gray-400);
  font-size: 14px;
}

.card-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.card-actions .btn {
  padding: 6px 12px;
  font-size: 12px;
  min-height: 32px;
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background-color: var(--color-gray-950);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 24px 16px 24px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-gray-400);
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.15s ease;
}

.modal-close:hover {
  background-color: var(--color-gray-800);
  color: var(--color-white);
}

.modal form {
  padding: 24px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray-300);
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  margin-top: 20px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-gray-500);
}

.empty-state h3 {
  margin: 0 0 8px 0;
  font-size: 16px;
  color: var(--color-gray-400);
}

.empty-state p {
  margin: 0;
  font-size: 14px;
}