body {
    background-color: #1a1a2e;
    font-family: 'Poppins', sans-serif;
    color: #e0e0e0;
}

.mobile-container {
    max-width: 480px;
    margin: auto;
    background-color: transparent;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.background-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50vh;
    background: linear-gradient(to bottom, #1f4287, #1a1a2e);
    z-index: -1;
}

.app-header {
    background: transparent;
    color: white;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.product-card {
    border-radius: 1rem;
    overflow: hidden;
    position: relative;
    height: 200px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: flex-end;
    color: white;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2), 0 6px 6px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
}

.card-content {
    position: relative;
    z-index: 1;
    padding: 1rem;
    width: 100%;
}

.card-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-text {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.nutrient-badge {
    font-size: 0.75rem;
    padding: 0.3em 0.6em;
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Add Sale Page & Form */
.add-sale-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 600;
    color: #f0f0f0;
}

.form-group input,
.form-group select {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background-color: rgba(0, 0, 0, 0.2);
    color: #fff;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    padding-right: 40px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #8E44AD;
    box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.5);
}

.btn.btn-primary {
    padding: 15px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(45deg, #8E44AD, #C0392B);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.back-button {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.8rem;
    color: white;
    text-decoration: none;
}

.alert.success {
    padding: 15px;
    background-color: rgba(46, 204, 113, 0.8);
    color: white;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 480px;
    margin: auto;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: rgba(26, 26, 46, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 0;
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #e0e0e0;
    text-decoration: none;
    font-size: 0.75rem;
    transition: color 0.3s ease;
}

.nav-item i {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.nav-item.active,
.nav-item:hover {
    color: #fff;
}

main.p-3 {
    padding-bottom: 100px !important; /* Space for bottom nav */
}