/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
    position: relative;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-light);
    color: var(--text-dark);
    line-height: 1.6;
}

/* App Container */
#app {
    min-height: 100vh;
    width: 100%;
    margin: 0;
    padding: 0;
}

/* Dashboard Header */
.dashboard-header {
    background: white;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--neutral-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.dashboard-header h1 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    font-weight: 600;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.user-info span {
    color: var(--neutral-600);
    font-weight: 500;
}

/* Dashboard Content */
.dashboard-content {
    padding: 2rem;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Product Cards */
.product-card {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--neutral-300);
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.product-header h3 {
    color: var(--text-dark);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

.product-info {
    margin-bottom: 1.5rem;
}

.product-info p {
    margin-bottom: 0.5rem;
    color: var(--neutral-600);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-info strong {
    color: var(--text-dark);
    font-weight: 600;
    min-width: 80px;
}

.stock-amount {
    font-weight: 600;
    color: var(--primary-blue);
}

/* Stock Actions */
.stock-actions {
    border-top: 1px solid var(--neutral-200);
    padding-top: 1rem;
}

.stock-input-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.stock-input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
}

.stock-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--neutral-500);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--neutral-700);
}

/* Auth Forms */
.auth-form {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 400px;
    width: 100%;
    margin: 2rem auto;
    box-shadow: var(--shadow-lg);
    box-sizing: border-box;
}

/* Auth form container for proper centering */
#app.auth-page {
    min-height: 100vh;
    padding: 1rem;
    box-sizing: border-box;
    margin: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.auth-form h2 {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.form-switch {
    text-align: center;
    margin-top: 1rem;
    color: var(--neutral-600);
}

.switch-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.switch-link:hover {
    color: var(--accent-sky);
    text-decoration: underline;
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
    .dashboard-content {
        padding: 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1rem;
    }
    
    .user-info {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
    
    .user-info button {
        width: 100%;
        max-width: 200px;
    }
    
    .dashboard-content {
        padding: 1rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .product-card {
        padding: 1.25rem;
    }
    
    .stock-input-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .stock-input {
        width: 100%;
    }
    
    .auth-form {
        margin: 0 auto;
        padding: 1.5rem;
        width: calc(100% - 2rem);
        max-width: 360px;
        box-sizing: border-box;
    }
    
    #app {
        padding: 1rem;
        min-height: 100vh;
    }
    
    #app.auth-page {
        padding: 1rem;
        display: flex;
        justify-content: center;
        align-items: center;
        margin: 0 auto;
        box-sizing: border-box;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .dashboard-header h1 {
        font-size: 1.25rem;
    }
    
    .product-header {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
    
    .product-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .product-info p {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .product-info strong {
        min-width: auto;
    }
    
    .auth-form {
        padding: 1.25rem;
        width: calc(100% - 1rem);
        max-width: 320px;
        border-radius: var(--radius-md);
        box-sizing: border-box;
        margin: 0 auto;
    }
    
    #app {
        padding: 0.5rem;
    }
    
    #app.auth-page {
        padding: 1rem;
        display: flex;
        justify-content: center;
        align-items: center;
        margin: 0 auto;
        box-sizing: border-box;
        max-width: 100%;
    }
}