/* Import Google Fonts - Modern, clean fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700&display=swap');

:root {
  /* Modern theme (default - grayscale) */
  --primary-color: #3D5A80;
  --secondary-color: #ee6c4d;
  --tertiary-color: #98c1d9;
  --accent-color: #293241;
  --success-color: #43aa8b;
  --warning-color: #f8961e;
  --danger-color: #f94144;
  
  --bg-color: #2c2c2c;
  --card-bg: #3d3d3d;
  --container-bg: #3d3d3d;
  --sidebar-bg: #222222;
  --header-bg: #333333;
  
  --text-primary: #e0e0e0;
  --text-secondary: #cccccc;
  --text-light: #aaaaaa;
  --text-white: #f5f5f5;
  
  --input-bg: #444444;
  --input-border: #555555;
  --input-color: #e0e0e0;
  
  --button-bg: #3D5A80;
  --button-hover: #293241;
  --button-text: #ffffff;
  
  --error-color: #f94144;
  
  --border-radius: 8px;
  --box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

/* Light theme (optional) */
[data-theme="light"] {
  --primary-color: #3D5A80;
  --secondary-color: #ee6c4d;
  --tertiary-color: #98c1d9;
  --accent-color: #293241;
  
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --container-bg: #ffffff;
  --sidebar-bg: #293241;
  --header-bg: #3D5A80;
  
  --text-primary: #293241;
  --text-secondary: #495057;
  --text-light: #6c757d;
  --text-white: #ffffff;
  
  --input-bg: #f8f9fa;
  --input-border: #ced4da;
  --input-color: #495057;
  
  --button-bg: #3D5A80;
  --button-hover: #293241;
  --button-text: #ffffff;
  
  --error-color: #f94144;
  
  --box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Dark theme (even darker) */
[data-theme="dark"] {
  --primary-color: #3D5A80;
  --secondary-color: #ee6c4d;
  --tertiary-color: #98c1d9;
  --accent-color: #e0fbfc;
  
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --container-bg: #1e1e1e;
  --sidebar-bg: #1e1e1e;
  --header-bg: #293241;
  
  --text-primary: #e0fbfc;
  --text-secondary: #cce3de;
  --text-light: #98c1d9;
  --text-white: #ffffff;
  
  --input-bg: #2c2c2c;
  --input-border: #3d3d3d;
  --input-color: #e0fbfc;
  
  --button-bg: #3D5A80;
  --button-hover: #98c1d9;
  --button-text: #ffffff;
  
  --error-color: #f94144;
  
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

body {
  background-color: var(--bg-color);
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.3rem; }

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--secondary-color);
}

/* Login page */
body:has(.login-container) {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: var(--bg-color);
  background-image: linear-gradient(45deg, var(--primary-color), var(--tertiary-color));
  margin: 0;
  padding: 20px;
}

/* Modern card-based containers */
.login-container,
.customer-container,
.invoice-container,
.inventory-container,
.settings-container {
  background: var(--container-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  animation: fadeIn 0.5s ease;
}

.customer-container,
.invoice-container,
.inventory-container,
.settings-container {
  max-width: 1200px;
  margin: 0 auto;
  border-radius: var(--border-radius);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Login page styling */
.login-container h2 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.8rem;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 15px;
}

.login-container h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--secondary-color);
  border-radius: 3px;
}

.login-container label {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  display: block;
  color: var(--text-secondary);
}

.login-container input[type="text"],
.login-container input[type="password"] {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 20px;
  border-radius: var(--border-radius);
  border: 1px solid var(--input-border);
  outline: none;
  font-size: 1rem;
  background: var(--input-bg);
  color: var(--input-color);
  transition: var(--transition);
}

.login-container input::placeholder {
  color: var(--text-light);
}

.login-container input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(61, 90, 128, 0.2);
}

.login-container .checkbox-group {
  display: flex;
  align-items: center;
  margin-bottom: 25px;
}

.login-container .checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-right: 10px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.login-container .checkbox-group label {
  margin-bottom: 0;
  cursor: pointer;
}

.login-container button {
  width: 100%;
  padding: 14px;
  background: linear-gradient(to bottom, var(--button-bg), rgba(41, 50, 65, 0.95));
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  color: var(--button-text);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  letter-spacing: 0.02em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container button:hover {
  background: linear-gradient(to bottom, var(--button-hover), rgba(41, 50, 65, 0.95));
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.login-container button:active {
  transform: translateY(0);
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.15), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.login-container button i {
  margin-right: 8px;
  font-size: 1.1em;
}

.error {
  color: var(--error-color);
  background-color: rgba(249, 65, 68, 0.1);
  padding: 12px;
  border-radius: var(--border-radius);
  margin-bottom: 25px;
  text-align: center;
  font-weight: 500;
}

.success {
  color: var(--success-color);
  background-color: rgba(67, 170, 139, 0.1);
  padding: 12px;
  border-radius: var(--border-radius);
  margin-bottom: 25px;
  text-align: center;
  font-weight: 500;
}

/* Customer Management Styles */
.page-title {
  margin-bottom: 30px;
  text-align: center;
  position: relative;
  padding-bottom: 15px;
}

.page-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--secondary-color);
  border-radius: 3px;
}

.actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.search-bar {
  display: flex;
  flex: 1;
  max-width: 400px;
}

.search-bar input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--input-border);
  border-right: none;
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  outline: none;
  background: var(--input-bg);
  color: var(--input-color);
}

.search-bar button {
  padding: 10px 16px;
  background: linear-gradient(to bottom, var(--primary-color), #344e70);
  color: white;
  border: none;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.search-bar button:hover {
  background: linear-gradient(to bottom, #4A6D9A, #344e70);
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.search-bar button:active {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.button-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  padding: 10px 16px;
  background: linear-gradient(to bottom, var(--button-bg), rgba(41, 50, 65, 0.95));
  color: var(--button-text);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  letter-spacing: 0.02em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn:hover {
  background: linear-gradient(to bottom, var(--button-hover), rgba(41, 50, 65, 0.95));
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.15), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn i {
  margin-right: 6px;
  font-size: 0.9em;
}

.btn-primary {
  background: linear-gradient(to bottom, var(--primary-color), #344e70);
}

.btn-primary:hover {
  background: linear-gradient(to bottom, #4A6D9A, #344e70);
}

.btn-secondary {
  background: linear-gradient(to bottom, var(--secondary-color), #e05a3b);
}

.btn-secondary:hover {
  background: linear-gradient(to bottom, #f07d5e, #e05a3b);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  box-shadow: none;
  text-shadow: none;
}

.btn-outline:hover {
  background: rgba(61, 90, 128, 0.1);
  color: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.btn-outline:active {
  background: rgba(61, 90, 128, 0.2);
  transform: translateY(0);
}

.btn-outline.btn-active {
  background: var(--primary-color);
  color: white;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Table styling */
.data-table-container {
  overflow-x: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
}

table thead th {
  background: #333333;
  color: white;
  text-align: left;
  padding: 14px 16px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

table tbody tr {
  transition: var(--transition);
  border-bottom: 1px solid var(--input-border);
}

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

table tbody tr:hover {
  background-color: rgba(152, 193, 217, 0.1);
}

table tbody td {
  padding: 14px 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  margin-right: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

.edit-btn {
  background: linear-gradient(to bottom, var(--primary-color), #344e70);
  color: white;
}

.delete-btn {
  background: linear-gradient(to bottom, var(--danger-color), #e53e41);
  color: white;
}

.view-btn {
  background: linear-gradient(to bottom, var(--tertiary-color), #7ba9c1);
  color: var(--accent-color);
  font-weight: 600;
}

.paid-btn {
  background: linear-gradient(to bottom, var(--success-color), #37937a);
  color: white;
}

.void-btn {
  background: linear-gradient(to bottom, var(--secondary-color), #e05a3b);
  color: white;
  font-weight: bold;
  text-transform: uppercase;
  border: 2px solid var(--secondary-color);
}

.email-btn {
  background: linear-gradient(to bottom, #4285F4, #3367d6);
  color: white;
}

.action-btn i {
  margin-right: 5px;
  font-size: 0.9em;
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.action-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.edit-btn:hover {
  background: linear-gradient(to bottom, #4A6D9A, #344e70);
}

.delete-btn:hover {
  background: linear-gradient(to bottom, #fa5658, #e53e41);
}

.view-btn:hover {
  background: linear-gradient(to bottom, #a9cde0, #7ba9c1);
}

.paid-btn:hover {
  background: linear-gradient(to bottom, #4fc19e, #37937a);
}

.void-btn:hover {
  background: linear-gradient(to bottom, #f07d5e, #e05a3b);
}

.email-btn:hover {
  background: linear-gradient(to bottom, #5a95f5, #3367d6);
}

/* Invoice Styles - Modern form controls */
.form-group {
  margin-bottom: 22px;
}

label {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  display: block;
  color: var(--text-secondary);
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--border-radius);
  border: 1px solid var(--input-border);
  outline: none;
  font-size: 1rem;
  background: var(--input-bg);
  color: var(--input-color);
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(61, 90, 128, 0.15);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: var(--text-light);
}

.input-with-icon {
  position: relative;
}

.input-with-icon input {
  padding-left: 40px;
}

.input-with-icon .icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

/* Style for dropdown options */
select option {
  background-color: var(--card-bg);
  color: var(--text-primary);
  padding: 8px;
}

/* Form grid layout */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

/* Style for manual entry containers */
#manualInvoiceContainer, 
#manualProductContainer {
  background: var(--input-bg);
  padding: 15px;
  border-radius: var(--border-radius);
  margin-top: 10px;
  border: 1px solid var(--input-border);
}

/* Style for the quick add button */
#quickAddBtn {
  background: linear-gradient(to bottom, var(--secondary-color), #e05a3b);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  padding: 8px 14px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  font-weight: 600;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#quickAddBtn:hover {
  background: linear-gradient(to bottom, #f07d5e, #e05a3b);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

#quickAddBtn:active {
  transform: translateY(0);
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Card components */
.card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.card-header {
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--input-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  margin-bottom: 0;
  font-size: 1.3rem;
}

/* Status indicators */
.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
}

.status-paid {
  background-color: rgba(67, 170, 139, 0.15);
  color: var(--success-color);
}

.status-unpaid {
  background-color: rgba(249, 65, 68, 0.15);
  color: var(--danger-color);
}

.status-voided {
  background-color: rgba(238, 108, 77, 0.15);
  color: var(--secondary-color);
}

.status-pending {
  background-color: rgba(248, 150, 30, 0.15);
  color: var(--warning-color);
}

.stock-low {
  color: var(--danger-color);
  font-weight: 600;
  padding: 4px 8px;
  background-color: rgba(249, 65, 68, 0.1);
  border-radius: 4px;
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  align-items: flex-start;
  justify-content: center;
  z-index: 1001;
  opacity: 0;
  transition: opacity 0.3s ease;
  overflow-y: auto;
  padding: 30px 0;
}

.modal.active {
  opacity: 1;
}

.modal .modal-content {
  background: var(--container-bg);
  backdrop-filter: blur(10px);
  padding: 40px;
  border-radius: 10px;
  width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transform: translateY(20px);
  transition: transform 0.3s ease;
  animation: modalSlideIn 0.3s ease forwards;
  margin: 30px auto;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal h3 {
  margin-bottom: 30px;
  color: var(--text-color);
  font-size: 32px;
  font-weight: 600;
  text-align: center;
}

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

.modal .form-group label {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 5px;
  display: block;
  color: var(--text-color);
}

.modal .form-group input,
.modal .form-group select {
  width: 100%;
  padding: 12px 15px;
  border-radius: 5px;
  border: none;
  outline: none;
  font-size: 16px;
  background: var(--input-bg);
  color: var(--input-color);
  transition: background 0.3s;
}

.modal .form-group input:hover,
.modal .form-group select:hover {
  opacity: 0.9;
}

.modal .form-group input:focus,
.modal .form-group select:focus {
  background: var(--input-bg);
  opacity: 0.9;
}

.modal .form-group input::placeholder,
.modal .form-group select::placeholder {
  color: var(--text-color);
  opacity: 0.7;
}

.modal .modal-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 30px;
}

.modal .modal-buttons button {
  padding: 12px 25px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

.modal .cancel-btn {
  background: linear-gradient(to bottom, #555555, #444444);
  color: var(--text-primary);
}

.modal .save-btn {
  background: linear-gradient(to bottom, var(--primary-color), #344e70);
  color: #fff;
}

.modal .cancel-btn:hover {
  background: linear-gradient(to bottom, #666666, #555555);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.modal .save-btn:hover {
  background: linear-gradient(to bottom, #4A6D9A, #344e70);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.modal .modal-buttons button:active {
  transform: translateY(0);
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.modal .modal-buttons button i {
  margin-right: 6px;
  font-size: 0.9em;
}

/* Settings Styles */
.settings-container {
  max-width: 1000px;
}

.settings-container h2,
.settings-container h3 {
  color: var(--text-color);
}

.settings-container h3 {
  margin-bottom: 15px;
}

.settings-container label {
  color: var(--text-color);
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.settings-container input[type="text"],
.settings-container select {
  background: var(--input-bg);
  color: var(--input-color);
  width: 100%;
  padding: 10px;
  border-radius: 5px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 5px;
}

.settings-container .setting-description {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: 15px;
}

.settings-container .settings-section {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.settings-container button {
  background: linear-gradient(to bottom, var(--primary-color), #344e70);
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-weight: 600;
  margin-top: 10px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

.settings-container button:hover {
  background: linear-gradient(to bottom, #4A6D9A, #344e70);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.settings-container button:active {
  transform: translateY(0);
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.settings-container button i {
  margin-right: 6px;
  font-size: 0.9em;
}