/* Mobile-First Component Library */

/* Base Mobile Styles */
:root {
    --mobile-spacing-unit: 0.5rem;
    --mobile-touch-target: 44px;
    --mobile-border-radius: 0.375rem;
    --mobile-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --mobile-transition: all 0.3s ease;
}

/* Mobile Container */
.mobile-container {
    width: 100%;
    padding-left: var(--mobile-spacing-unit);
    padding-right: var(--mobile-spacing-unit);
    margin: 0 auto;
}

@media (min-width: 576px) {
    .mobile-container {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .mobile-container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .mobile-container {
        max-width: 960px;
    }
}

/* Mobile Grid System */
.mobile-grid {
    display: grid;
    gap: var(--mobile-spacing-unit);
    grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 576px) {
    .mobile-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .mobile-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile Cards */
.mobile-card {
    background: white;
    border-radius: var(--mobile-border-radius);
    box-shadow: var(--mobile-shadow);
    transition: var(--mobile-transition);
    overflow: hidden;
}

.mobile-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.mobile-card-body {
    padding: var(--mobile-spacing-unit);
}

@media (min-width: 576px) {
    .mobile-card-body {
        padding: calc(var(--mobile-spacing-unit) * 1.5);
    }
}

/* Mobile Forms */
.mobile-form-group {
    margin-bottom: var(--mobile-spacing-unit);
}

.mobile-form-control {
    width: 100%;
    min-height: var(--mobile-touch-target);
    padding: 0.625rem 0.75rem;
    border: 1px solid #dee2e6;
    border-radius: var(--mobile-border-radius);
    font-size: 1rem;
    line-height: 1.5;
    transition: var(--mobile-transition);
}

.mobile-form-control:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

/* Mobile Buttons */
.mobile-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--mobile-touch-target);
    padding: 0.5rem 1rem;
    border-radius: var(--mobile-border-radius);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    transition: var(--mobile-transition);
    cursor: pointer;
    gap: 0.5rem;
}

.mobile-btn-primary {
    background-color: #007bff;
    color: white;
    border: none;
}

.mobile-btn-primary:hover {
    background-color: #0056b3;
}

.mobile-btn-secondary {
    background-color: #6c757d;
    color: white;
    border: none;
}

.mobile-btn-secondary:hover {
    background-color: #545b62;
}

/* Mobile Lists */
.mobile-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-list-item {
    padding: var(--mobile-spacing-unit);
    border-bottom: 1px solid #dee2e6;
    display: flex;
    align-items: center;
    min-height: var(--mobile-touch-target);
}

.mobile-list-item:last-child {
    border-bottom: none;
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.1);
    z-index: 1000;
    display: flex;
    justify-content: space-around;
    padding: 0.5rem;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #6c757d;
    text-decoration: none;
    font-size: 0.75rem;
    padding: 0.5rem;
    min-height: var(--mobile-touch-target);
}

.mobile-nav-item i {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.mobile-nav-item.active {
    color: #007bff;
}

/* Mobile Modals */
.mobile-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    padding: var(--mobile-spacing-unit);
}

.mobile-modal-content {
    background: white;
    border-radius: var(--mobile-border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

/* Mobile Utilities */
.mobile-hidden {
    display: none !important;
}

@media (min-width: 576px) {
    .mobile-hidden-sm {
        display: none !important;
    }
}

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

@media (min-width: 992px) {
    .mobile-hidden-lg {
        display: none !important;
    }
}

/* Mobile Typography */
.mobile-text {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: var(--mobile-spacing-unit);
}

.mobile-text-small {
    font-size: 0.875rem;
}

.mobile-text-large {
    font-size: 1.25rem;
}

.mobile-heading {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: calc(var(--mobile-spacing-unit) * 1.5);
}

/* Mobile Images */
.mobile-img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: var(--mobile-border-radius);
}

.mobile-img-circle {
    border-radius: 50%;
}

/* Mobile Loading States */
.mobile-loading {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007bff;
    border-radius: 50%;
    animation: mobile-spin 1s linear infinite;
}

@keyframes mobile-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mobile Touch Feedback */
@media (hover: none) {
    .mobile-touch-feedback:active {
        transform: scale(0.98);
        opacity: 0.9;
    }
}

/* RTL Support */
[dir="rtl"] {
    .mobile-nav-item i {
        margin-right: 0;
        margin-left: 0.25rem;
    }
    
    .mobile-btn {
        flex-direction: row-reverse;
    }
    
    .mobile-list-item {
        flex-direction: row-reverse;
    }
}