/* Mobile-First Responsive Design */

/* Reset base styles */
.sidebar {
    position: fixed;
    top: 64px;
    left: 0;
    width: 260px;
    height: calc(100vh - 64px);
    background: white;
    border-right: 1px solid #e2e8f0;
    overflow-y: auto;
    z-index: 100;
    padding: 1.5rem;
}

.main-content {
    margin-left: 260px;
    min-height: calc(100vh - 64px);
    padding: 2rem;
}

/* Mobile Styles (0-991px) */
@media (max-width: 991px) {
    body {
        font-size: 14px;
    }

    .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    /* Hide sidebar on mobile */
    .sidebar {
        display: none;
    }

    /* Full width main content */
    .main-content {
        margin-left: 0 !important;
        padding: 1rem;
        width: 100%;
    }

    /* Navbar Mobile */
    .navbar {
        padding: 0.5rem 0.75rem !important;
    }

    .navbar-brand {
        font-size: 1rem !important;
    }

    .navbar-brand .material-icons {
        font-size: 1.3rem !important;
        vertical-align: middle;
    }

    .navbar-toggler {
        padding: 0.25rem 0.5rem;
        font-size: 1rem;
    }

    /* Navbar Collapse */
    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 1000;
        margin: 0 0.75rem;
        background: white;
        padding: 1rem;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }

    .navbar-nav .nav-item {
        width: 100%;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
        border-radius: 6px;
        display: flex;
        align-items: center;
    }

    .navbar .dropdown {
        width: 100%;
        margin-top: 0.5rem;
        padding-top: 0.5rem;
        border-top: 1px solid #e2e8f0;
    }

    .navbar .dropdown > a {
        padding: 0.75rem 1rem !important;
    }

    /* Cards Mobile */
    .card {
        margin-bottom: 1rem;
    }

    .card-body {
        padding: 1rem;
    }

    /* Note Cards */
    .note-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem;
    }

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

    table {
        font-size: 0.875rem;
    }

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

    /* Forms */
    .form-control, .form-select {
        font-size: 1rem;
    }

    .form-label {
        font-size: 0.875rem;
        font-weight: 600;
    }

    /* Modal */
    .modal-dialog {
        margin: 0.5rem;
    }
}

/* Tablet Styles (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    body {
        font-size: 15px;
    }

    .container-fluid {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .main-content {
        padding: 1.5rem;
    }

    .note-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 1.5rem;
    }

    .card-body {
        padding: 1.5rem;
    }
}

/* Desktop (992px+) */
@media (min-width: 992px) {
    body {
        font-size: 16px;
    }

    .sidebar {
        display: block !important;
        position: fixed !important;
        top: 64px !important;
        left: 0 !important;
        width: 260px !important;
        height: calc(100vh - 64px) !important;
        background: white !important;
        border-right: 1px solid #e2e8f0 !important;
        overflow-y: auto !important;
        padding: 1.5rem !important;
        z-index: 100 !important;
    }

    .main-content {
        margin-left: 260px !important;
        padding: 2rem;
    }

    .note-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .container-fluid {
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .navbar-collapse {
        position: static !important;
        background: transparent !important;
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }
}

/* Desktop Large (1200px+) */
@media (min-width: 1200px) {
    .note-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 2rem;
    }

    .main-content {
        padding: 2.5rem;
    }
}

/* Ultra Wide (1400px+) */
@media (min-width: 1400px) {
    .note-grid {
        grid-template-columns: repeat(4, 1fr) !important;
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .navbar {
        padding: 0.25rem 0;
    }
}

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .btn, .card, a {
        -webkit-tap-highlight-color: transparent;
    }

    .btn:active, .card:active {
        transform: scale(0.98);
    }
}

/* Print Styles */
@media print {
    .sidebar, .navbar, .btn, .modal {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }
}