/* Base body styles: font, background, and text color */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f7f7f7;
    color: #222;
}

/* Header styling: green background, white text, centered, with shadow */
header {
    background: #4caf50;
    color: #fff;
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* Instructions Section Styling */
.instructions {
    max-width: 1100px; /* wider than before */
    margin: 15px auto;
    padding: 15px 25px; /* smaller padding */
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}
.instructions h2 {
    color: #2c3e50;
    margin-bottom: 10px;
    border-bottom: 1px solid #eee;
    padding-bottom: 4px;
    font-size: 1.4rem; /* slightly smaller */
}

/* Footer styling: dark background, white text, centered, with spacing */
footer {
    background: #222;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

/* Form controls: consistent font size */
label, select, input, button {
    font-size: 1rem;
}

/* Inputs, selects, and buttons: spacing, padding, rounded corners, border */
input, select, button {
    margin: 0.3rem 0.5rem 0.3rem 0;
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #ccc;
}

/* Button styling: green background, white text, no border, pointer cursor, hover effect */
button {
    background: #4caf50;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}
button:hover {
    background: #388e3c;
}

/* Table container: flex layout for responsive tables, spacing between tables */
.table-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin: 1rem 0;
}

/* Individual table card: white background, rounded corners, shadow, padding, width constraints */
.table-container > div {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    padding: 1rem;
    min-width: 270px;
    flex: 1 1 300px;
    max-width: 350px;
}

.section-header {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin: 1rem 1;
}

.instructions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: flex-start;
    margin: 1rem 1;
}

.step {
    display: flex;
    align-items: center; /* vertically align for compact look */
    margin-bottom: 2px; /* less spacing between steps */
}
.step-icon {
    background-color: #3498db;
    color: white;
    width: 28px; /* smaller icons */
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
    margin-right: 10px;
    flex-shrink: 0;
}
.step-content h3 {
    margin: 0;
    font-size: 1rem;
}
.step-content p {
    margin: 2px 0 0;
    font-size: 0.9rem;
    color: #555;
}

/* Store title styling: green color, no top margin, slightly larger font */
h2 {
    margin-top: 0;
    font-size: 1.2rem;
    color: #388e3c;
}

/* Table styling: full width, collapsed borders, margin, light background */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0.5rem;
    background: #fafafa;
}

/* Table cell padding and alignment */
th, td {
    padding: 0.5rem;
    text-align: left;
}

/* Table header styling: light green background, dark text */
th {
    background: #e8f5e9;
    color: #222;
}

/* Table footer (totals) styling: grey background, bold text */
tfoot td {
    background: #e0e0e0;
    font-weight: bold;
}

/* Highlight boxes for cheapest store and basket: yellow accent, rounded, padding */
#cheapest-store, #cheapest-basket {
    background: #fffde7;
    border-left: 5px solid #ffeb3b;
    margin: 1rem auto;
    padding: 1rem;
    max-width: 600px;
    border-radius: 6px;
    font-size: 1.1rem;
}

/* Responsive layout for tablets: stack tables vertically, adjust width */
@media (max-width: 900px) {
    .table-container {
        flex-direction: column;
        align-items: center;
    }
    .table-container > div {
        max-width: 95vw;
    }
}

/* Responsive layout for mobile: smaller header/footer, tighter padding, full-width controls */
@media (max-width: 600px) {
    header, footer {
        font-size: 1rem;
        padding: 1rem 0;
    }
    .table-container > div {
        padding: 0.5rem;
    }
    input, select, button {
        width: 95vw;
        max-width: 400px;
        margin-bottom: 0.5rem;
    }
}