/* === UNIVERSAL SCHOOL TEMPLATE CSS (BLACK & WHITE EDITION) === */
/* clean, modern, and copy-paste friendly for all projects */

/* === RESET === */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* === VARIABLES === */
:root {
    --accent: #000;
    --border: #000;
    --bg: #fff;
    --bg-alt: #f7f7f7;
    --text: #111;
    --shadow: rgba(0, 0, 0, 0.15) 3px 3px 6px;
    --radius: 1em;
    --max-width: 1300px;
}

/* === PAGE === */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Verdana, sans-serif;
    background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    line-height: 1.6;
}

/* === HEADER === */
header {
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 30px;
    box-shadow: var(--shadow);
    background: var(--bg);
    width: 95%;
    max-width: var(--max-width);
    text-align: center;
    margin-top: 25px;
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

header:hover {
    box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
    transform: translateY(-2px);
}

header h1 {
    font-size: 2.2rem;
}

header h2 {
    margin-top: 0.5rem;
    font-weight: 400;
    font-size: 1.1rem;
    color: #444;
}

/* === BOX === */
.box {
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 25px 35px;
    margin-top: 25px;
    background: var(--bg);
    box-shadow: var(--shadow);
    width: 95%;
    max-width: var(--max-width);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.box:hover {
    transform: translateY(-2px);
    box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
}

/* === TEXT ELEMENTS === */
p {
    margin-bottom: 1rem;
}

h1, h2, h3, h4 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

a {
    color: #000;
    text-decoration: underline;
    font-weight: 500;
}

a:hover {
    opacity: 0.7;
}

/* === LISTS === */
ul, ol {
    margin: 1rem 0 1rem 1.5rem;
}

li {
    margin-bottom: 0.4rem;
}

/* === TABLES === */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 0.6em;
    overflow: hidden;
    box-shadow: var(--shadow);
}

th, td {
    padding: 10px 12px;
    border-bottom: 1px solid #ccc;
}

th {
    background: var(--bg-alt);
    font-weight: bold;
    text-align: left;
}

tr:hover {
    background: #f2f2f2;
}

/* === FORMS === */
form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-top: 1rem;
}

fieldset {
    border: 2px solid var(--border);
    border-radius: 0.8em;
    padding: 1.2rem 1.5rem;
    background: var(--bg-alt);
}

legend {
    font-weight: bold;
    color: #000;
    padding: 0 0.4rem;
    font-size: 1.05rem;
}

label {
    font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
textarea,
select {
    width: 100%;
    font-size: 1rem;
    margin-top: 6px;
    margin-bottom: 8px;
    border: 2px solid var(--border);
    border-radius: 0.5em;
    padding: 0.4rem 0.5rem;
    transition: all 0.2s ease;
    background: var(--bg);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #000;
    box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
    background: #f9f9f9;
}

input[type="radio"],
input[type="checkbox"] {
    accent-color: #000;
    transform: scale(1.2);
    margin-right: 0.3rem;
}

/* === BUTTONS === */
button,
input[type="submit"],
input[type="button"],
input[type="reset"] {
    padding: 10px 20px;
    border: 2px solid var(--border);
    border-radius: 0.5em;
    font-weight: bold;
    font-size: 1rem;
    background: linear-gradient(180deg, #fff 0%, #f2f2f2 100%);
    cursor: pointer;
    transition: all 0.2s ease;
    align-self: flex-start;
}

button {
    width: 100%;
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover {
    background: #eaeaea;
    box-shadow: rgba(0, 0, 0, 0.25) 3px 3px 6px;
    transform: translateY(-2px);
}

button:active,
input[type="submit"]:active,
input[type="button"]:active,
input[type="reset"]:active {
    transform: translateY(0);
    box-shadow: rgba(0, 0, 0, 0.15) 1px 1px 3px;
    background: #f7f7f7;
}

/* === HR, CODE, ETC. === */
hr {
    border: 0;
    border-top: 2px solid var(--border);
    margin: 1.5rem 0;
}

img {
    max-width: 100%;
    border-radius: 0.5em;
}

code, pre {
    background: #f4f4f4;
    border: 1px solid #ccc;
    border-radius: 0.4em;
    padding: 0.3em 0.5em;
    font-family: "Courier New", monospace;
}

pre {
    padding: 1em;
    overflow-x: auto;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
    header, .box {
        width: 95%;
        padding: 20px;
    }

    button {
        width: 100%;
    }

    textarea {
        width: 100%;
    }
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.7rem;
    }

    header h2 {
        font-size: 0.95rem;
    }
}
