styles.css

/* ===========================================
   My Book Library - CSS Styles
   PhillyCoderDojo Session 17: JavaScript & DOM
   =========================================== */

/* ---------- CSS Variables (like C# constants!) ---------- */
:root {
    --primary-color: #4a90d9;
    --primary-dark: #357abd;
    --secondary-color: #2ecc71;
    --danger-color: #e74c3c;
    --background-color: #f5f7fa;
    --card-background: #ffffff;
    --text-color: #333333;
    --text-light: #666666;
    --border-color: #e1e4e8;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---------- Header Styles ---------- */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
    padding: 2rem 1rem;
    box-shadow: var(--shadow);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header .subtitle {
    font-size: 1rem;
    opacity: 0.9;
}

/* ---------- Main Content ---------- */
main {
    flex: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
    width: 100%;
}

/* ---------- Form Section ---------- */
.form-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.form-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

#bookForm {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.form-group input {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.2);
}

.form-group input::placeholder {
    color: #aaa;
}

.btn-add {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-add:hover {
    background: #27ae60;
    transform: translateY(-2px);
}

.btn-add:active {
    transform: translateY(0);
}

/* ---------- Search Section ---------- */
.search-section {
    margin-bottom: 1rem;
}

#searchInput {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ---------- Stats Section ---------- */
.stats-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.stats-section p {
    color: var(--text-light);
    font-size: 0.95rem;
}

#bookCount {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* ---------- Books Section ---------- */
.books-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.books-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

#bookList {
    display: grid;
    gap: 1rem;
}

/* ---------- Book Card ---------- */
.book-card {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    animation: fadeIn 0.3s ease-in;
}

.book-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.book-card h3 {
    color: var(--text-color);
    font-size: 1.1rem;
    margin: 0;
}

.book-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.book-card .book-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.delete-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.delete-btn:hover {
    background: #c0392b;
}

/* ---------- Empty State ---------- */
.empty-message {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

.empty-message p {
    font-size: 1.1rem;
}

/* ---------- Footer ---------- */
footer {
    background: var(--text-color);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
}

footer p {
    font-size: 0.9rem;
    margin: 0.25rem 0;
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ---------- Responsive Design ---------- */
@media (min-width: 600px) {
    #bookForm {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .form-group {
        flex: 1;
        min-width: 200px;
    }

    .btn-add {
        align-self: flex-end;
    }

    #bookList {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }

    main {
        padding: 1rem 0.5rem;
    }
}

/* ---------- Utility Classes ---------- */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mb-1 {
    margin-bottom: 1rem;
}