/* --- Global Reset & Typography --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    background: #f8f9fa;
    color: #333;
    line-height: 1.5;
}

/* --- Navigation --- */
nav {
    background: #2c3e50;
    padding: 15px 25px;
    color: white;
    margin-bottom: 30px;
    overflow: hidden;
}

nav a {
    color: white;
    margin-right: 20px;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

/* Automatically push logout or specific links to the right if desired */
nav a:last-child:not(:first-child) {
    float: right;
    color: #e74c3c;
}

/* --- Main Content Containers --- */
main {
    max-width: 800px;
    margin: 40px auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Optional modifier if a page needs to be narrower (like login) */
main.narrow {
    max-width: 420px;
}

/* --- Headings & Text --- */
h1, h2, h3 {
    margin-top: 0;
    color: #2c3e50;
}
h3 {
    margin-bottom: 0;
}

p {
    margin-bottom: 20px;
}

/* --- Form Elements --- */
form {
    margin: 0;
}

label {
    font-weight: 600;
    display: block;
    margin-bottom: 5px;
    margin-top: 15px;
}

input[type="text"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

/* Special case for horizontal inline forms (like Search or Add Product) */
form[action*="search"],
form[action*="add"] {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

form[action*="search"] input,
form[action*="add"] input {
    margin-bottom: 0;
    flex: 1;
}

/* --- Buttons --- */
button {
    background: #3498db;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1em;
}

button:hover {
    opacity: 0.9;
}

/* Contextual button styling without classes */
form[action*="add"] button {
    background: #27ae60;
}

form[action*="delete"] button {
    background: #c0392b;
    padding: 5px 10px;
    font-size: 0.9em;
}

/* --- Tables --- */
table {
    width: 100%;
    margin-top: 5px;
    border-collapse: collapse;
    background: white;
}

th, td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

th {
    background: #f1f3f5;
    font-weight: 600;
}

tr:nth-child(even) {
    background: #fcfcfc;
}

/* --- Alerts & Messages --- */
div[th\:if*="message"],
div[th\:if*="error"] {
    margin-top: 15px;
    padding: 12px;
    border-radius: 4px;
}

/* Fallback generic alert classes if used dynamically */
.alert-success {
    background: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 4px;
    margin-top: 15px;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 4px;
    margin-top: 15px;
}