/* ============================================
   UTILITIES
   ============================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .main {
        padding: 1.5rem;
    }

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

@media (max-width: 768px) {
    /* Sidebar becomes slide-out on mobile */
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: flex;
    }

    .sidebar-overlay.show {
        display: block;
        opacity: 1;
    }

    .main {
        margin-left: 0;
        padding: 1rem;
        padding-top: 5rem;
    }

    /* Cards stack on mobile */
    .cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Stats become more compact */
    .stat-card {
        padding: 1.25rem;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    /* Page header adjustments */
    .page-header h1,
    .page-header h2 {
        font-size: 1.5rem;
    }

    /* Tables scroll horizontally */
    .table-container {
        overflow-x: auto;
    }

    .table-container table {
        min-width: 640px;
    }

    /* Forms */
    .grid.two,
    .grid.three {
        grid-template-columns: 1fr;
    }

    /* Auth card padding */
    .auth-card {
        padding: 1.5rem;
    }

    .auth-logo-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: 1.25rem;
    }

    .auth-logo h1 {
        font-size: 1.5rem;
    }

    .card {
        padding: 1.25rem;
    }

    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.9375rem;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Stagger animation for cards */
.cards .stat-card:nth-child(1) { animation-delay: 0ms; }
.cards .stat-card:nth-child(2) { animation-delay: 50ms; }
.cards .stat-card:nth-child(3) { animation-delay: 100ms; }
.cards .stat-card:nth-child(4) { animation-delay: 150ms; }

.stat-card {
    animation: fadeIn 0.4s ease-out backwards;
}