/*
 * File: static/main.css
 * Description: Custom styles for the PubMed Search application.
 * This file uses TailwindCSS's utility-first approach but provides
 * a few custom classes for common components and aesthetics.
 */

/* ==================
 * Base Styles
 * ================== */

body {
    font-family: 'Inter', sans-serif;
    background-color: #f4f7f9;
    color: #4b5563;
}

h1, h2, h3, h4, h5, h6 {
    color: #1f2937;
}

/* ==================
 * Utility Classes
 * ================== */

.container {
    max-width: 960px; /* Equivalent to max-w-4xl in Tailwind */
    margin-left: auto;
    margin-right: auto;
}

.card {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 2rem;
}

.form-input {
    display: block;
    width: 100%;
    padding: 0.625rem 0.75rem; /* Equivalent to py-2 px-3 */
    margin-top: 0.25rem; /* Equivalent to mt-1 */
    font-size: 1rem;
    line-height: 1.5;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #e2e8f0; /* Equivalent to border-gray-200 */
    border-radius: 8px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-input:focus {
    color: #1f2937;
    background-color: #fff;
    border-color: #3b82f6; /* Equivalent to border-blue-600 */
    outline: 0;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5); /* Equivalent to ring-2 ring-blue-500 */
}

/* ==================
 * Button Styles
 * ================== */

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 0.75rem 1.5rem; /* Equivalent to px-6 py-3 */
    font-weight: 600; /* Equivalent to font-semibold */
    text-align: center;
    vertical-align: middle;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: #3b82f6; /* Equivalent to bg-blue-600 */
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #2563eb; /* Equivalent to hover:bg-blue-700 */
}

.btn-secondary {
    background-color: #d1d5db; /* Equivalent to bg-gray-300 */
    color: #1f2937;
}

.btn-secondary:hover {
    background-color: #9ca3af; /* Equivalent to hover:bg-gray-400 */
}