/* Mobile First Design */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Mobile Devices (max-width: 575px) */
@media (max-width: 575px) {
    /* Cards */
    .card {
        margin-bottom: 15px;
    }
    
    /* Typography */
    h1.display-4 {
        font-size: 1.8rem !important;
    }
    
    h1.display-3 {
        font-size: 2rem !important;
    }
    
    .lead {
        font-size: 1rem !important;
    }
    
    /* Buttons */
    .btn {
        padding: 8px 16px !important;
        font-size: 14px !important;
    }
    
    /* Tables - make scrollable */
    .table-responsive-mobile {
        overflow-x: auto;
        display: block;
        width: 100%;
    }
    
    /* Modals */
    .modal-dialog {
        margin: 10px !important;
    }
    
    .modal-body {
        padding: 15px !important;
    }
    
    /* Forms */
    .form-control, .form-select {
        font-size: 14px !important;
    }
    
    /* Navbar */
    .navbar-brand {
        font-size: 1.2rem !important;
    }
    
    /* Stats Cards */
    .stats-card h3 {
        font-size: 1.5rem !important;
    }
    
    /* Hero Section */
    .hero-section {
        text-align: center;
        padding: 30px 15px !important;
    }
    
    /* Dashboard Sidebar */
    .sidebar {
        width: 100% !important;
        position: fixed !important;
        top: 0;
        left: -100%;
        transition: left 0.3s ease;
        z-index: 1050;
        height: 100vh !important;
        overflow-y: auto;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .sidebar-toggle {
        display: block !important;
    }
    
    /* Dashboard Content */
    #page-content-wrapper {
        margin-left: 0 !important;
        width: 100% !important;
    }
    
    /* Back to top button */
    .back-to-top {
        position: fixed;
        bottom: 20px;
        right: 20px;
        display: none;
        z-index: 1000;
    }
    
    /* Doctor/PA Cards */
    .doctor-card, .pa-card {
        margin-bottom: 15px;
    }
}

/* Tablet Devices (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
    h1.display-4 {
        font-size: 2.2rem !important;
    }
    
    .hero-section {
        text-align: center;
        padding: 40px 20px !important;
    }
    
    .card {
        margin-bottom: 20px;
    }
}

/* Small Desktop (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    h1.display-4 {
        font-size: 2.5rem !important;
    }
    
    .sidebar {
        width: 220px !important;
    }
    
    #page-content-wrapper {
        margin-left: 220px !important;
    }
}

/* Desktop (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .container {
        max-width: 960px !important;
    }
}

/* Large Desktop (1200px and above) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px !important;
    }
}

/* Common Responsive Fixes */
img {
    max-width: 100%;
    height: auto;
}

/* Responsive Tables */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Responsive Images in Cards */
.card-img-top {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Responsive Modals */
@media (max-width: 576px) {
    .modal-footer {
        flex-direction: column;
        gap: 10px;
    }
    
    .modal-footer .btn {
        width: 100%;
        margin: 0;
    }
}

/* Responsive Grid Fix */
.row {
    margin-left: auto;
    margin-right: auto;
}

/* Toast Messages Responsive */
@media (max-width: 576px) {
    .toast {
        width: 90% !important;
        left: 5% !important;
        right: 5% !important;
    }
}

/* Form Inputs Responsive */
input, select, textarea {
    max-width: 100%;
}

/* Dashboard Stats Cards */
@media (max-width: 768px) {
    .stats-card {
        margin-bottom: 15px;
    }
    
    .stats-card .card-body {
        padding: 15px !important;
    }
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 70px;
    left: 15px;
    z-index: 1040;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 8px 12px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .sidebar-toggle {
        display: block;
    }
}

/* Loading Spinner Responsive */
.spinner-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Print Styles */
@media print {
    .sidebar, .navbar, .btn, .no-print {
        display: none !important;
    }
    
    .container, .container-fluid {
        padding: 0 !important;
        margin: 0 !important;
    }
}