/**
 * CSR Tools - Public Styles - Bootstrap Enhanced v2.0.1
 * Theme: Astra Compatible
 * Primary Colors: #c93939, #ea4445, #222222
 * 
 * @package CSR_Tools
 * @since 2.0.0
 * @updated 2.0.1 - Added validation styles
 * 
 * UPDATES:
 * - Added Bootstrap validation feedback styles
 * - Enhanced input focus states
 * - Added admin email validation styles
 * - Improved error message display
 */

/* ==========================================================================
   CSS Variables - Custom Theme Colors
   ========================================================================== */
:root {
    /* Primary Colors */
    --csr-primary: #c93939;
    --csr-primary-dark: #a82e2e;
    --csr-primary-light: #ea4445;
    --csr-dark: #222222;
    --csr-dark-light: #333333;
    
    /* Semantic Colors */
    --csr-success: #28a745;
    --csr-warning: #ffc107;
    --csr-danger: #dc3545;
    --csr-info: #17a2b8;
    
    /* Neutral Colors */
    --csr-white: #ffffff;
    --csr-light: #f8f9fa;
    --csr-gray-100: #f5f5f5;
    --csr-gray-200: #e9ecef;
    --csr-gray-300: #dee2e6;
    --csr-gray-600: #6c757d;
    --csr-gray-800: #343a40;
    
    /* Borders & Shadows */
    --csr-border-radius: 8px;
    --csr-border-radius-sm: 4px;
    --csr-border-radius-lg: 12px;
    --csr-border-color: #dee2e6;
    --csr-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --csr-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --csr-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --csr-transition: all 0.3s ease;
    --csr-transition-fast: all 0.15s ease;
}

/* ==========================================================================
   General Container & Layout
   ========================================================================== */
.csr-tools-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 10px 5px;
}

.csr-tools-form {
    background: var(--csr-white);
    padding: 40px;
    border-radius: var(--csr-border-radius-lg);
    box-shadow: var(--csr-shadow);
    margin-bottom: 40px;
}

.form-header {
    margin-bottom: 40px;
    text-align: center;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--csr-gray-200);
}

.form-header h2 {
    color: var(--csr-dark);
    margin-bottom: 15px;
    font-size: 32px;
    font-weight: 700;
}

.form-header p {
    color: var(--csr-gray-600);
    font-size: 18px;
    margin: 0;
}

/* ==========================================================================
   Bootstrap Form Elements - Enhanced with Validation
   ========================================================================== */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--csr-dark);
    font-size: 15px;
}

.form-group label .required {
    color: var(--csr-danger);
    margin-left: 4px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--csr-border-color);
    border-radius: var(--csr-border-radius-sm);
    font-size: 15px;
    transition: var(--csr-transition);
    box-sizing: border-box;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--csr-primary);
    box-shadow: 0 0 0 0.2rem rgba(201, 57, 57, 0.15);
}

.form-control::placeholder {
    color: #999;
}

textarea.form-control {
    min-height: 140px;
    resize: vertical;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
}

.form-control[readonly] {
    background-color: var(--csr-gray-100);
    cursor: not-allowed;
}

/* ==========================================================================
   Bootstrap Validation States - NEW v2.0.1
   ========================================================================== */

/* Valid state */
.form-control.is-valid {
    border-color: var(--csr-success);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid:focus {
    border-color: var(--csr-success);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Invalid state */
.form-control.is-invalid {
    border-color: var(--csr-danger);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid:focus {
    border-color: var(--csr-danger);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Validation feedback messages */
.valid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--csr-success);
    font-weight: 600;
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--csr-danger);
    font-weight: 600;
}

/* Admin email validation error */
.admin-email-error {
    animation: slideInDown 0.3s ease;
}

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

/* Validation icon animation */
.form-control.is-valid,
.form-control.is-invalid {
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Form Help Text */
.form-help {
    display: block;
    margin-top: 8px;
    font-size: 14px;
    color: var(--csr-gray-600);
    line-height: 1.5;
}

.form-help .icon {
    margin-right: 5px;
}

.form-help b {
    color: var(--csr-dark);
}

.form-help ul {
    margin: 8px 0;
    padding-left: 20px;
}

.form-help ul li {
    margin-bottom: 4px;
}

/* ==========================================================================
   Bootstrap Buttons - Custom Colors
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border: none;
    border-radius: var(--csr-border-radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: var(--csr-transition);
    line-height: 1.5;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(201, 57, 57, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, var(--csr-primary) 0%, var(--csr-primary-light) 100%);
    color: var(--csr-white);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--csr-primary-dark) 0%, var(--csr-primary) 100%);
    color: var(--csr-white);
    transform: translateY(-2px);
    box-shadow: var(--csr-shadow);
}

.btn-secondary {
    background: var(--csr-gray-600);
    color: var(--csr-white);
}

.btn-secondary:hover {
    background: var(--csr-gray-800);
    color: var(--csr-white);
}

.btn-success {
    background: var(--csr-success);
    color: var(--csr-white);
}

.btn-success:hover {
    background: #218838;
    color: var(--csr-white);
}

.btn-warning {
    background: var(--csr-warning);
    color: var(--csr-dark);
}

.btn-warning:hover {
    background: #e0a800;
    color: var(--csr-dark);
}

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

.btn-link {
    background: transparent;
    color: var(--csr-primary);
    padding: 8px 16px;
}

.btn-link:hover {
    background: rgba(201, 57, 57, 0.1);
    color: var(--csr-primary-dark);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 17px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Button Groups */
.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* ==========================================================================
   Bootstrap Alerts & Messages
   ========================================================================== */
.alert {
    padding: 20px 24px;
    margin-bottom: 24px;
    border: 1px solid transparent;
    border-radius: var(--csr-border-radius-sm);
    border-left: 4px solid;
}

.alert h4 {
    margin-top: 0;
    margin-bottom: 12px;
    font-weight: 600;
}

.alert ul {
    margin: 10px 0;
    padding-left: 20px;
}

.alert-info {
    background-color: #e7f3ff;
    border-color: #bee5eb;
    border-left-color: var(--csr-info);
    color: #0c5460;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    border-left-color: var(--csr-success);
    color: #155724;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeaa7;
    border-left-color: var(--csr-warning);
    color: #856404;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    border-left-color: var(--csr-danger);
    color: #721c24;
}

/* ==========================================================================
   Result Containers
   ========================================================================== */
.success-message,
.error-message {
    padding: 30px;
    border-radius: var(--csr-border-radius-lg);
    margin-bottom: 30px;
    text-align: center;
}

.success-message {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border: 2px solid var(--csr-success);
}

.error-message {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    border: 2px solid var(--csr-danger);
}

.success-message .icon,
.error-message .icon {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    border-radius: 50%;
    font-size: 32px;
    margin-bottom: 15px;
    font-weight: bold;
}

.success-message .icon {
    background: var(--csr-success);
    color: var(--csr-white);
}

.error-message .icon {
    background: var(--csr-danger);
    color: var(--csr-white);
}

.success-message h3 {
    color: var(--csr-success);
    margin: 15px 0 10px;
    font-size: 24px;
    font-weight: 700;
}

.error-message h3 {
    color: var(--csr-danger);
    margin: 15px 0 10px;
    font-size: 24px;
    font-weight: 700;
}

.success-message p,
.error-message p {
    margin: 0;
    font-size: 16px;
}

/* ==========================================================================
   Result Sections
   ========================================================================== */
.result-section {
    background: var(--csr-white);
    border: 1px solid var(--csr-border-color);
    border-radius: var(--csr-border-radius);
    padding: 30px;
    margin-bottom: 24px;
    box-shadow: var(--csr-shadow-sm);
}

.result-section.warning {
    background: #fff3cd;
    border-color: var(--csr-warning);
    border-left: 4px solid var(--csr-warning);
}

.section-header {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--csr-gray-200);
}

.section-header h4 {
    color: var(--csr-dark);
    margin: 0;
    font-size: 20px;
    font-weight: 700;
}

#csr-result {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.6s ease, max-height 0.6s ease;
    margin-top: 40px;
}

#csr-result.show {
    opacity: 1;
    max-height: 100000px;
    overflow: visible;
}

#csr-result .card {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
}

#csr-result.show .card {
    animation: slideInUp 0.6s ease forwards;
}

#csr-result.show .card:nth-child(1) { animation-delay: 0.1s; }
#csr-result.show .card:nth-child(2) { animation-delay: 0.2s; }
#csr-result.show .card:nth-child(3) { animation-delay: 0.3s; }
#csr-result.show .card:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Code Blocks
   ========================================================================== */
.code-block {
    background: var(--csr-dark);
    border-radius: var(--csr-border-radius-sm);
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
}

.code-block pre {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.code-block pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

/* ==========================================================================
   Bootstrap Tables - Enhanced
   ========================================================================== */
.table {
    width: 100%;
    margin-bottom: 1rem;
    background-color: transparent;
    border-collapse: collapse;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
}

.info-table tr {
    border-bottom: 1px solid var(--csr-border-color);
}

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

.info-table td {
    padding: 14px 12px;
    line-height: 1.6;
    vertical-align: top;
}

.info-table td:first-child {
    font-weight: 600;
    color: var(--csr-gray-600);
    width: 180px;
}

.info-table td:last-child {
    color: var(--csr-dark);
}

.info-table th {
    padding: 14px 12px;
    background: var(--csr-gray-100);
    font-weight: 700;
    text-align: left;
    border-bottom: 2px solid var(--csr-primary);
    color: var(--csr-dark);
}

.info-table code {
    font-size: 12px;
    background: var(--csr-gray-100);
    padding: 3px 8px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: var(--csr-primary);
}

/* ==========================================================================
   Bootstrap List Groups
   ========================================================================== */
.list-group {
    display: flex;
    flex-direction: column;
    padding-left: 0;
    margin-bottom: 0;
}

.sans-list,
.security-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sans-list li {
    padding: 12px 16px;
    background: var(--csr-gray-100);
    border-radius: var(--csr-border-radius-sm);
    margin-bottom: 8px;
    font-family: 'Courier New', monospace;
    color: var(--csr-dark);
    border-left: 3px solid var(--csr-primary);
}

.security-list li {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--csr-border-color);
    font-size: 15px;
}

.security-list li:last-child {
    border-bottom: none;
}

.security-list li.success {
    color: var(--csr-success);
}

.security-list li.error {
    color: var(--csr-danger);
}

.security-list .icon {
    margin-right: 12px;
    font-weight: bold;
    font-size: 20px;
}

/* ==========================================================================
   Bootstrap Badges & Labels
   ========================================================================== */
.badge {
    display: inline-block;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 12px;
}

.badge.dv {
    background: #72aee6;
    color: var(--csr-white);
}

.badge.ov {
    background: var(--csr-success);
    color: var(--csr-white);
}

.badge.ev {
    background: #9b51e0;
    color: var(--csr-white);
}

.severity-badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 14px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.severity-badge.critical {
    background: var(--csr-danger);
    color: var(--csr-white);
}

.severity-badge.high {
    background: #f59e0b;
    color: var(--csr-white);
}

.severity-badge.medium {
    background: var(--csr-warning);
    color: var(--csr-dark);
}

.severity-badge.none {
    background: var(--csr-success);
    color: var(--csr-white);
}

/* ==========================================================================
   Bootstrap Cards
   ========================================================================== */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--csr-white);
    background-clip: border-box;
    border: 1px solid var(--csr-border-color);
    border-radius: var(--csr-border-radius);
    box-shadow: var(--csr-shadow-sm);
}

.card-header {
    padding: 20px 24px;
    margin-bottom: 0;
    background-color: var(--csr-gray-100);
    border-bottom: 1px solid var(--csr-border-color);
    border-radius: var(--csr-border-radius) var(--csr-border-radius) 0 0;
}

.card-header h4 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--csr-dark);
}

.card-body {
    flex: 1 1 auto;
    padding: 24px;
}

.csr-tools-container a {
    text-decoration: none;
}

/* ==========================================================================
   Radio & Checkbox Groups - Bootstrap Style
   ========================================================================== */
.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-group label,
.checkbox-group label {
    display: flex;
    align-items: flex-start;
    padding: 16px 20px;
    background: var(--csr-gray-100);
    border: 2px solid transparent;
    border-radius: var(--csr-border-radius-sm);
    cursor: pointer;
    transition: var(--csr-transition);
    font-weight: 500;
}

.radio-group label:hover,
.checkbox-group label:hover {
    background: var(--csr-white);
    border-color: var(--csr-primary);
    box-shadow: var(--csr-shadow-sm);
}

.radio-group input,
.checkbox-group input {
    margin-right: 12px;
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.radio-group input:checked + div,
.checkbox-group input:checked + div {
    font-weight: 600;
}

/* CA Selection Grid */
.ca-selection {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
    margin: 15px 0;
}

.ca-option {
    display: flex;
    align-items: flex-start;
    padding: 14px 18px;
    background: var(--csr-gray-100);
    border-radius: var(--csr-border-radius-sm);
    cursor: pointer;
    transition: var(--csr-transition);
    border: 2px solid transparent;
}

.ca-option:hover {
    background: var(--csr-white);
    border-color: var(--csr-primary);
    box-shadow: var(--csr-shadow-sm);
}

.ca-option input[type="checkbox"] {
    margin-right: 12px;
    margin-top: 3px;
    width: 18px;
    height: 18px;
}

.ca-info {
    flex: 1;
}

.ca-info strong {
    display: block;
    margin-bottom: 4px;
    color: var(--csr-dark);
    font-size: 15px;
}

.ca-domain {
    font-size: 13px;
    color: var(--csr-gray-600);
    font-family: 'Courier New', monospace;
}

/* ==========================================================================
   File Upload Inputs
   ========================================================================== */
.file-input input[type="file"] {
    width: 100%;
    padding: 16px;
    border: 2px dashed var(--csr-border-color);
    border-radius: var(--csr-border-radius-sm);
    cursor: pointer;
    transition: var(--csr-transition);
    background: var(--csr-white);
    font-size: 14px;
}

.file-input input[type="file"]:hover {
    border-color: var(--csr-primary);
    background: rgba(201, 57, 57, 0.05);
}

.file-input input[type="file"]:focus {
    outline: none;
    border-color: var(--csr-primary);
    box-shadow: 0 0 0 0.2rem rgba(201, 57, 57, 0.15);
}

/* ==========================================================================
   Next Steps Section
   ========================================================================== */
.next-steps {
    background: linear-gradient(135deg, var(--csr-gray-100) 0%, var(--csr-white) 100%);
    border-radius: var(--csr-border-radius);
    padding: 30px;
    margin-top: 30px;
    border-left: 4px solid var(--csr-primary);
}

.next-steps h4 {
    color: var(--csr-primary);
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 700;
}

.next-steps ol {
    margin: 20px 0;
    padding-left: 30px;
}

.next-steps li {
    margin-bottom: 12px;
    line-height: 1.8;
    font-size: 15px;
}

/* ==========================================================================
   Warning Messages
   ========================================================================== */
.warning-message {
    background: var(--csr-gray-100);
    border-left: 4px solid var(--csr-warning);
    padding: 20px 24px;
    margin: 20px 0;
    border-radius: var(--csr-border-radius-sm);
}

.warning-message h4 {
    margin: 0 0 12px 0;
    color: var(--csr-dark);
    font-size: 18px;
}

.warning-message ul {
    margin: 12px 0 0 0;
    padding-left: 24px;
}

.warning-message li {
    margin-bottom: 10px;
    line-height: 1.6;
    font-size: 15px;
}

/* ==========================================================================
   Rate Limit Indicator - Bootstrap Progress Bar Style
   ========================================================================== */
.rate-limit-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--csr-gray-100);
    border-radius: var(--csr-border-radius-sm);
    margin-bottom: 24px;
    font-size: 14px;
    border-left: 3px solid var(--csr-primary);
}

.rate-limit-bar {
    flex: 1;
    height: 8px;
    background: var(--csr-gray-300);
    border-radius: 4px;
    overflow: hidden;
}

.rate-limit-bar .fill {
    height: 100%;
    background: linear-gradient(90deg, var(--csr-primary) 0%, var(--csr-primary-light) 100%);
    transition: width 0.3s ease;
    border-radius: 4px;
}

/* Warning state when limit is low */
.rate-limit-indicator.warning .rate-limit-bar .fill {
    background: linear-gradient(90deg, var(--csr-warning) 0%, #e0a800 100%);
}

.rate-limit-indicator.danger .rate-limit-bar .fill {
    background: linear-gradient(90deg, var(--csr-danger) 0%, #c82333 100%);
}

/* ==========================================================================
   Advanced Settings Toggle
   ========================================================================== */
.advanced-settings {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--csr-gray-200);
}

.advanced-toggle {
    background: var(--csr-gray-100);
    padding: 16px 20px;
    border-radius: var(--csr-border-radius-sm);
    cursor: pointer;
    user-select: none;
    transition: var(--csr-transition);
    border: 2px solid transparent;
}

.advanced-toggle:hover {
    background: var(--csr-white);
    border-color: var(--csr-primary);
    box-shadow: var(--csr-shadow-sm);
}

.advanced-toggle .icon {
    margin-right: 10px;
    transition: transform 0.3s ease;
    display: inline-block;
    font-weight: bold;
    color: var(--csr-primary);
}

.advanced-toggle.active .icon {
    transform: rotate(90deg);
}

.advanced-content {
    display: none;
    padding-top: 24px;
}

.advanced-content.show {
    display: block;
    animation: slideDown 0.3s ease;
}

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

/* ==========================================================================
   Loading States
   ========================================================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.loading-spinner {
    text-align: center;
    padding: 40px;
    background: var(--csr-white);
    border-radius: var(--csr-border-radius-lg);
    box-shadow: var(--csr-shadow-lg);
}

.spinner-border {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

.spinner-border-custom {
    width: 50px;
    height: 50px;
    border: 5px solid var(--csr-gray-300);
    border-top-color: var(--csr-primary);
    border-radius: 50%;
    animation: spinner-border 0.8s linear infinite;
    margin: 0 auto 20px;
}

.loading-text {
    color: var(--csr-dark);
    font-weight: 600;
    font-size: 16px;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

/* ==========================================================================
   Input Focus Enhancement - NEW v2.0.1
   ========================================================================== */
.form-control:focus {
    transform: scale(1.005);
    transition: all 0.2s ease;
}

/* Select focus */
.form-select:focus {
    border-color: var(--csr-primary);
    box-shadow: 0 0 0 0.2rem rgba(201, 57, 57, 0.15);
}

/* Input group focus (domain prefix + domain) */
.input-group:focus-within {
    box-shadow: 0 0 0 0.2rem rgba(201, 57, 57, 0.1);
    border-radius: var(--csr-border-radius-sm);
}

/* ==========================================================================
   Validation Animations - NEW v2.0.1
   ========================================================================== */

/* Pulse animation for validation icons */
.form-control.is-valid {
    animation: validPulse 0.5s ease;
}

.form-control.is-invalid {
    animation: invalidShake 0.5s ease;
}

@keyframes validPulse {
    0% { border-color: var(--csr-border-color); }
    50% { border-color: var(--csr-success); box-shadow: 0 0 0 0.3rem rgba(40, 167, 69, 0.3); }
    100% { border-color: var(--csr-success); box-shadow: none; }
}

@keyframes invalidShake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* Smooth transition for feedback messages */
.valid-feedback,
.invalid-feedback {
    animation: fadeInDown 0.3s ease;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Enhanced Full Admin Email Display - NEW v2.0.1
   ========================================================================== */
#full-admin-email {
    transition: all 0.3s ease;
    position: relative;
}

/* Valid state */
#full-admin-email.valid {
    border-color: var(--csr-success) !important;
    background: #d4edda !important;
    color: var(--csr-success) !important;
}

/* Invalid state */
#full-admin-email.invalid {
    border-color: var(--csr-danger) !important;
    background: #f8d7da !important;
    color: var(--csr-danger) !important;
}

/* Highlight effect when changed */
#full-admin-email.highlight {
    animation: highlightPulse 0.8s ease;
}

@keyframes highlightPulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(201, 57, 57, 0.4);
    }
    50% { 
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(201, 57, 57, 0);
    }
}

/* ==========================================================================
   Responsive Design - Mobile First
   ========================================================================== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .csr-tools-form {
        padding: 40px;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .form-header h2 {
        font-size: 36px;
    }
    
    .action-buttons {
        flex-wrap: nowrap;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .csr-tools-container {
        padding: 10px 5px;
    }
}

/* Mobile Specific Styles */
@media (max-width: 767px) {
    .csr-tools-container {
        padding: 5px 0px;
    }
    
    .csr-tools-form {
        padding: 24px 20px;
    }
    
    .form-header {
        margin-bottom: 30px;
        padding-bottom: 20px;
    }
    
    .form-header h2 {
        font-size: 24px;
    }
    
    .form-header p {
        font-size: 15px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn {
        width: 100%;
    }
    
    .info-table td:first-child {
        width: 100px;
        font-size: 13px;
    }
    
    .ca-selection {
        grid-template-columns: 1fr;
    }
    
    .result-section {
        padding: 20px;
    }
    
    .code-block {
        padding: 15px;
    }
    
    .code-block pre {
        font-size: 11px;
    }
    
    /* Validation feedback on mobile */
    .valid-feedback,
    .invalid-feedback {
        font-size: 0.8rem;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .btn-lg {
        padding: 14px 24px;
        font-size: 15px;
    }
    
    .form-group label {
        font-size: 14px;
    }
    
    .form-control {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    /* Adjust validation icons on small screens */
    .form-control.is-valid,
    .form-control.is-invalid {
        padding-right: calc(1em + 0.75rem);
        background-size: calc(0.6em + 0.3rem) calc(0.6em + 0.3rem);
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    .csr-tools-form,
    .action-buttons,
    .btn,
    .advanced-toggle,
    .rate-limit-indicator,
    .valid-feedback,
    .invalid-feedback {
        display: none !important;
    }
    
    .result-container {
        display: block !important;
    }
    
    .code-block {
        background: var(--csr-white);
        border: 1px solid var(--csr-border-color);
        page-break-inside: avoid;
    }
    
    .code-block pre {
        color: var(--csr-dark);
    }
    
    .result-section {
        page-break-inside: avoid;
    }
}

/* ==========================================================================
   Astra Theme Compatibility
   ========================================================================== */

/* Override Astra's default styles */
.csr-tools-container .form-control,
.csr-tools-container .btn {
    font-family: inherit;
}

.csr-tools-container a {
    text-decoration: none;
}

.csr-tools-container a:hover {
    text-decoration: none;
}

/* Ensure consistent spacing with Astra */
.csr-tools-container {
    margin-top: 0;
    margin-bottom: 0;
}

/* Fix Astra's focus outline */
.csr-tools-container *:focus {
    outline-offset: 0;
}

/* ==========================================================================
   Custom Validation Tooltips - NEW v2.0.1
   ========================================================================== */
.validation-tooltip {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 5;
    display: none;
    max-width: 100%;
    padding: 0.5rem 0.75rem;
    margin-top: 0.1rem;
    font-size: 0.875rem;
    color: var(--csr-white);
    background-color: var(--csr-danger);
    border-radius: var(--csr-border-radius-sm);
    box-shadow: var(--csr-shadow);
}

.validation-tooltip.show {
    display: block;
    animation: fadeInDown 0.3s ease;
}

.validation-tooltip::before {
    position: absolute;
    top: -5px;
    left: 20px;
    content: '';
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid var(--csr-danger);
}

/* ==========================================================================
   Input Icons - NEW v2.0.1
   ========================================================================== */
.input-with-icon {
    position: relative;
}

.input-with-icon .input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--csr-gray-600);
    font-size: 18px;
    pointer-events: none;
}

.input-with-icon .form-control {
    padding-left: 42px;
}

/* ==========================================================================
   Smooth Transitions for All Interactive Elements
   ========================================================================== */
.form-control,
.form-select,
.btn,
.ca-option,
.radio-group label,
.checkbox-group label {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Accessibility - Focus Visible
   ========================================================================== */
.form-control:focus-visible,
.btn:focus-visible {
    outline: 3px solid var(--csr-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   Dark Mode Support (Optional - Future)
   ========================================================================== */
@media (prefers-color-scheme: dark) {
    /* Will be implemented in future version */
}

/* ==========================================================================
   High Contrast Mode Support
   ========================================================================== */
@media (prefers-contrast: high) {
    .form-control {
        border-width: 3px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .valid-feedback,
    .invalid-feedback {
        font-weight: 700;
    }
}

/* ==========================================================================
   Reduced Motion for Accessibility
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.p-3 {
    padding: 1rem;
}

.p-4 {
    padding: 1.5rem;
}

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-flex {
    display: flex;
}

.fw-bold {
    font-weight: 700;
}

.text-muted {
    color: var(--csr-gray-600);
}

.text-success {
    color: var(--csr-success);
}

.text-danger {
    color: var(--csr-danger);
}

.text-warning {
    color: var(--csr-warning);
}

.text-info {
    color: var(--csr-info);
}