/* General Layout */
body {
    background-color: #f4f7f6; /* That clean, soft grey background */
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
}

.converter-card {
    background: white;
    border: 1px solid #e0e0e0; /* Subtle grey border */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input[type="number"], 
input[type="text"], 
textarea {
    width: 100%;
    padding: 14px;
    border: 2px solid #d1d5db; /* Modern medium grey */
    border-radius: 10px;      /* Slightly rounder for a friendly feel */
    font-size: 16px;
    transition: all 0.3s ease; /* Makes the color change smooth */
    background-color: #ffffff;
}

/* This adds the Green "Active" state when clicking */
input:focus, textarea:focus {
    outline: none;
    border-color: #28a745; /* Your specific Green */
    box-shadow: 0 0 0 4px rgba(40, 167, 69, 0.1); /* Soft Green glow */
}

/* The Flashing Button */
.flash-button {
    width: 100%;
    padding: 20px;
    font-size: 20px;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: white;
    margin: 20px 0;
    animation: simpleHighlight 3s infinite; /* The loop */
}

@keyframes simpleHighlight {
    0% { background-color: #28a745; box-shadow: 0 4px 15px rgba(40, 167, 69, 0.2); }
    50% { background-color: #218838; box-shadow: 0 4px 25px rgba(40, 167, 69, 0.4); }
    100% { background-color: #28a745; box-shadow: 0 4px 15px rgba(40, 167, 69, 0.2); }
}

/* Fake Ad Placeholders */
.ad-box {
    width: 100%;
    min-height: 100px; /* Reduced from 250px for a sleeker look */
    background-color: #f9fafb; /* Lighter grey to feel less heavy */
    border: 1px dashed #d1d5db;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
    font-size: 13px;
    margin: 15px 0; /* Slightly tighter spacing */
    border-radius: 6px;
}

#resultBox {
    width: 80%;
    min-height: 150px;
    padding: 20px;
    background-color: #ffffff; /* Brighter background for a cleaner look */
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    
    /* THE KEY CHANGE: Modern font stack */
    font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    font-weight: 500; /* Makes the numbers a bit easier to read */
    color: #1f2937; /* Slightly darker for better contrast */
    line-height: 1.8; /* Extra breathing room between results */
    
    resize: none;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}

/* Add a subtle glow when the box has content */
#resultBox:not(:placeholder-shown) {
    border-color: #28a745;
    background-color: #ffffff;
}

.download-container {
    display: flex;
    gap: 5px;
    justify-content: space-between;
}

.dl-btn {
    flex: 1;
    padding: 8px;
    font-size: 12px;
    cursor: pointer;
}

.dl-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}
.flag-selection p {
    font-weight: bold;
    margin-bottom: 10px;
    font-size: 14px;
}

.flag-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Two neat columns */
    gap: 10px;
    margin: 15px 0;
}

.flag-grid label {
    display: flex;
    align-items: center;
    background: #f8f9fa;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #eee;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
}

.flag-grid label:hover {
    background: #e9ecef;
}

.flag-grid input {
    width: auto; /* Keeps the checkbox small */
    margin-right: 10px;
}
.seo-content {
    max-width: 600px; /* This matches the width of your converter card */
    margin: 40px auto; /* This centers it and adds space below the tool */
    padding: 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05); /* A lighter shadow than the tool */
}
/* Space out the guide section */
.seo-content {
    line-height: 1.8; /* More space between lines of text */
    padding: 40px;
    margin-top: 50px;
}

.seo-content p {
    margin-bottom: 20px; /* Space between paragraphs */
}

/* Space out the list items */
.seo-content li {
    margin-bottom: 15px; /* Adds breathing room between each step */
}

/* Style the diagram container */
.measure-img {
    display: block;
    /* Change this value to make the image smaller */
    max-width: 350px; 
    height: auto;
    margin: 20px auto; /* Keeps it centered with space around it */
    border-radius: 12px;
    border: 1px solid #eee; /* Adds a nice subtle frame */
}

.caption {
    font-size: 0.9rem;
    color: #777;
    font-style: italic;
    margin-top: 10px;
}
.site-footer {
    margin-top: 50px;
    padding: 30px 20px;
    background-color: #f9fafb;
    border-top: 1px solid #e5e7eb;
    text-align: center;
}

.footer-content p {
    color: #4b5563;
    font-size: 14px;
    margin-bottom: 10px;
}

.footer-links a {
    color: #2563eb;
    text-decoration: none;
    margin: 0 15px;
    font-size: 14px;
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}
.contact-section {
    max-width: 500px;
    margin: 40px auto;
    padding: 20px;
    text-align: center;
    background: #ffffff;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.contact-form input, 
.contact-form textarea {
    padding: 12px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-family: sans-serif;
    font-size: 14px;
}

.contact-form textarea {
    min-height: 100px;
    resize: vertical;
}
.brand-guides {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    font-family: sans-serif;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.brand-card {
    background-color: var(--card-bg) !important; /* Forces the background to change */
    color: var(--text-color) !important;       /* Forces the main text to change */
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

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

.brand-card h3 {
    margin-top: 0;
    color: #16a34a; /* Matches your Green Convert button */
    font-size: 1.25rem;
}

.brand-card p {
    color: var(--text-color) !important;       /* This fixes the "disappearing" description */
    opacity: 0.9;                              /* Keeps it slightly softer than the heading */
    font-size: 0.95rem;
    line-height: 1.5;
}

.size-table-section {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

.table-container {
    overflow-x: auto; /* This allows horizontal scroll on mobile */
    border-radius: 12px;
    border: 1px solid #e5e7eb;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg); /* Fix: Uses dark mode background */
    text-align: left;
    transition: background-color 0.3s ease;
}

th, td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color); /* Fix: Border changes color */
    font-size: 14px;
    color: var(--text-color); /* Fix: Text turns white in dark mode */
}

th {
    background-color: var(--bg-color); /* Slightly different shade for header */
    color: var(--text-color);
    font-weight: 600;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background-color: #fefefe;
}
.button-stack {
    display: flex;
    flex-direction: column; /* Stacks them vertically */
    gap: 12px;              /* Space between buttons */
    margin-top: 20px;
}

#clearBtn {
    width: 100%;
    padding: 12px;
    background-color: #6b7280; /* A neutral grey */
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

#clearBtn:hover {
    background-color: #4b5563;
}