:root {
    --container-padding-mobile: 1rem;
    --container-padding-tablet: 2rem;
    --container-padding-desktop: 3rem;
}

.container-fluid {
    padding-left: var(--container-padding-mobile);
    padding-right: var(--container-padding-mobile);
}

@media (min-width: 768px) {
    .container-fluid {
        padding-left: var(--container-padding-tablet);
        padding-right: var(--container-padding-tablet);
    }
}

@media (min-width: 1200px) {
    .container-fluid {
        padding-left: var(--container-padding-desktop);
        padding-right: var(--container-padding-desktop);
    }
}

h1 { font-size: clamp(1.5rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.25rem, 4vw, 2rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.5rem); }
h4 { font-size: clamp(1rem, 2.5vw, 1.25rem); }
p { font-size: clamp(0.875rem, 2vw, 1rem); }

.card-body {
    padding: 1rem;
}

@media (min-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }
}

.btn {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

@media (min-width: 768px) {
    .btn {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}

.btn-lg {
    font-size: 1rem;
    padding: 0.75rem 1.25rem;
}

@media (min-width: 768px) {
    .btn-lg {
        font-size: 1.125rem;
        padding: 1rem 2rem;
    }
}

.form-control, .form-select {
    font-size: 16px;
    padding: 0.75rem 1rem;
}

@media (min-width: 768px) {
    .form-control, .form-select {
        font-size: 1rem;
        padding: 0.625rem 1rem;
    }
}

@media (max-width: 767.98px) {
    .table-responsive-stack thead {
        display: none;
    }
    
    .table-responsive-stack tr {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid var(--bs-gray-300);
        border-radius: 8px;
        padding: 0.5rem;
    }
    
    .table-responsive-stack td {
        display: flex;
        justify-content: space-between;
        padding: 0.5rem;
        border: none;
    }
    
    .table-responsive-stack td::before {
        content: attr(data-label);
        font-weight: 600;
        margin-right: 1rem;
    }
}

@media (max-width: 767.98px) {
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .modal-header, .modal-footer {
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 767.98px) {
    .mobile-stack > [class*="col-"] {
        margin-bottom: 1rem;
    }
    
    .mobile-stack > [class*="col-"]:last-child {
        margin-bottom: 0;
    }
}

.d-flex.flex-wrap-mobile {
    flex-wrap: nowrap;
}

@media (max-width: 767.98px) {
    .d-flex.flex-wrap-mobile {
        flex-wrap: wrap;
    }
    
    .d-flex.flex-wrap-mobile > * {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 767.98px) {
    .nav-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .nav-tabs::-webkit-scrollbar {
        display: none;
    }
    
    .nav-tabs .nav-item {
        flex-shrink: 0;
    }
    
    .nav-tabs .nav-link {
        white-space: nowrap;
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 767.98px) {
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .stat-card .stat-label {
        font-size: 0.75rem;
    }
}

@media (max-width: 767.98px) {
    .col-md-6, .col-md-4, .col-lg-4, .col-lg-3 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

@media (max-width: 991.98px) and (min-width: 768px) {
    .col-lg-4, .col-lg-3 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

.touch-friendly {
    min-height: 44px;
    min-width: 44px;
}

@media (max-width: 767.98px) {
    .btn, .form-control, .form-select, .nav-link, .dropdown-item {
        min-height: 44px;
    }
}

@media (max-width: 767.98px) {
    .gap-3 {
        gap: 0.75rem !important;
    }
    
    .gap-4 {
        gap: 1rem !important;
    }
    
    .mb-4 {
        margin-bottom: 1rem !important;
    }
    
    .py-4 {
        padding-top: 1rem !important;
        padding-bottom: 1rem !important;
    }
    
    .py-5 {
        padding-top: 1.5rem !important;
        padding-bottom: 1.5rem !important;
    }
}

@media (max-width: 767.98px) {
    .d-flex.justify-content-between {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.75rem;
    }
    
    .d-flex.justify-content-between > * {
        width: 100%;
    }
}

@media (max-width: 767.98px) {
    .badge-container {
        display: flex;
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .badge {
        font-size: 0.7rem;
    }
}

@media (max-width: 767.98px) {
    .expert-card .expert-avatar {
        width: 60px;
        height: 60px;
        font-size: 1.25rem;
    }
    
    .expert-card .card-body {
        padding: 1rem;
    }
}

@media (max-width: 767.98px) {
    .plan-card {
        margin-bottom: 1rem;
    }
    
    .plan-price .h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 767.98px) {
    .ai-navigation {
        padding: 0.5rem 1rem;
    }
    
    .ai-navigation .nav-brand h1 {
        font-size: 1.25rem;
    }
    
    .ai-navigation .nav-items {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex !important;
    }
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .nav-mobile-overlay {
        display: none !important;
    }
}

.img-fluid {
    max-width: 100%;
    height: auto;
}

.img-responsive-cover {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

@media (min-width: 768px) {
    .img-responsive-cover {
        height: 300px;
    }
}

@media (max-width: 767.98px) {
    .mobile-full-width {
        width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
}

.text-truncate-mobile {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

@media (min-width: 768px) {
    .text-truncate-mobile {
        white-space: normal;
        overflow: visible;
    }
}

@media (max-width: 767.98px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .show-mobile-only {
        display: none !important;
    }
}

@media (max-width: 767.98px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        z-index: 1050;
        transition: left 0.3s ease;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1040;
        display: none;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
}

@media (max-width: 767.98px) {
    pre, code {
        font-size: 0.75rem;
        padding: 0.75rem;
        overflow-x: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}