:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a1a;
    --accent-color: #e50914;
    --accent-hover: #c40812;
    --accent-light: rgba(229, 9, 20, 0.1);
    --text-color: #f8f9fa;
    --text-muted: #adb5bd;
    --border-color: #333;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, var(--primary-bg) 0%, #1a1a1a 100%);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    margin: 0;
    padding: 1rem;
    line-height: 1.6;
}

.container-card {
    background-color: var(--secondary-bg);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    padding: 2.5rem;
    width: 100%;
    max-width: 700px;
    margin: 2rem auto;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.container-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), #ff6b6b);
}

.brand-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.brand-logo h1 {
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 2.8rem;
    text-shadow: 0 0 15px rgba(229, 9, 20, 0.4);
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.brand-logo h1::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 10%;
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    border-radius: 3px;
}

.brand-logo .subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 500;
}

.brand-logo .tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-style: italic;
}

.form-control {
    background-color: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--border-color);
    color: white;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    transition: var(--transition);
    font-size: 1rem;
}

.form-control:focus {
    background-color: rgba(255, 255, 255, 0.1) !important;
    border-color: var(--accent-color);
    color: white;
    box-shadow: 0 0 0 0.25rem rgba(229, 9, 20, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.7;
}

.form-select {
    border: 1px solid var(--border-color);
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
}


/**
.form-select {
    background-color: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--border-color);
    color: var(--text-color) !important;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    transition: var(--transition);
    font-size: 1rem;
}

.form-select:focus {
    background-color: rgba(255, 255, 255, 0.1) !important;
    border-color: var(--accent-color);
    color: var(--text-color) !important;
    box-shadow: 0 0 0 0.25rem rgba(229, 9, 20, 0.25);
}
**/

.form-label {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

.form-label i {
    margin-right: 8px;
    color: var(--accent-color);
}

.btn {
    border-radius: 8px;
    padding: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #c40812);
    border: none;
    box-shadow: 0 4px 15px rgba(229, 9, 20, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #c40812, var(--accent-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 9, 20, 0.4);
}

.btn-outline-primary {
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
}

.btn-outline-secondary {
    color: var(--text-muted);
    border: 2px solid var(--border-color);
    background: transparent;
}

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

.nav-tabs {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.nav-tabs .nav-link {
    color: var(--text-muted);
    background-color: transparent;
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: 0;
    position: relative;
    transition: var(--transition);
}

.nav-tabs .nav-link::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--accent-color);
    transition: var(--transition);
}

.nav-tabs .nav-link:hover {
    color: var(--text-color);
}

.nav-tabs .nav-link.active {
    color: var(--accent-color);
    background-color: transparent;
}

.nav-tabs .nav-link.active::after {
    width: 100%;
}

.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
}

.alert i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.15);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.15);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.15);
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--text-muted);
    z-index: 5;
    transition: var(--transition);
}

.toggle-password:hover {
    color: var(--accent-color);
}

.password-container {
    position: relative;
}

.form-text {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.settings-section {
    border-left: 3px solid var(--accent-color);
    padding-left: 1rem;
    margin-bottom: 1.5rem;
}

.settings-section h5 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.settings-section p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Modal styles */
.modal-content {
    background-color: var(--secondary-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-title {
    color: var(--accent-color);
    font-weight: 700;
}

.modal-body h5 {
    color: var(--accent-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.modal-body ul {
    padding-left: 1.5rem;
}

.modal-body li {
    margin-bottom: 0.5rem;
    position: relative;
}

.modal-body li::before {
    content: '•';
    color: var(--accent-color);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

.btn-close {
    filter: invert(1);
    opacity: 0.7;
}

.btn-close:hover {
    opacity: 1;
}

.disclaimer-warning {
    background-color: rgba(220, 53, 69, 0.1);
    border-left: 4px solid var(--danger-color);
    padding: 1.25rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.disclaimer-warning h6 {
    color: var(--danger-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.stats-container {
    display: flex;
    justify-content: space-between;
    margin: 1.5rem 0;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.progress {
    height: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    margin: 1rem 0;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--accent-color), #ff6b6b);
    border-radius: 4px;
}

.feature-highlight {
    background: var(--accent-light);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border: 1px solid rgba(229, 9, 20, 0.2);
}

.feature-highlight h5 {
    color: var(--accent-color);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}

.feature-highlight h5 i {
    margin-right: 10px;
}

.feature-highlight p {
    margin-bottom: 0;
    color: var(--text-muted);
}

.whatsapp-widget {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    cursor: pointer;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-widget:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-widget i {
    font-size: 28px;
}

.tooltip {
    position: absolute;
    bottom: 70px;
    right: 0;
    background: #128C7E;
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    font-size: 14px;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    display: none;
}

.whatsapp-widget:hover .tooltip {
    display: block;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Fix for form validation */
.was-validated .form-control:valid {
    background-color: rgba(40, 167, 69, 0.1) !important;
    border-color: var(--success-color);
    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);
}

.was-validated .form-control:invalid {
    background-color: rgba(220, 53, 69, 0.1) !important;
    border-color: var(--danger-color);
    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 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);
}

/* Fix for tab content */
.tab-content > .tab-pane {
    display: none;
}

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

/* Fix for password toggle positioning */
.password-container input {
    padding-right: 45px;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

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

/* Success animation */
@keyframes successCheckmark {
    0% {
        stroke-dashoffset: 100;
        opacity: 0;
    }
    100% {
        stroke-dashoffset: 0;
        opacity: 1;
    }
}

.success-checkmark {
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.success-checkmark circle {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: successCheckmark 1s ease-in-out forwards;
    animation-delay: 0.2s;
}

/* Page transitions */
.page-transition {
    animation: fadeIn 0.5s ease-in-out;
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

@media (max-width: 768px) {
    body {
        padding: 0.5rem;
        display: block;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .container-card {
        max-width: 100%;
        margin: 1rem auto;
        padding: 1.75rem;
    }
    
    .brand-logo h1 {
        font-size: 2.2rem;
    }
    
    .stats-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-tabs .nav-link {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}