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Zadania/Z110 - wskaźnik BMI/image042.jpg
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Zadania/Z110 - wskaźnik BMI/image042.jpg
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Zadania/Z110 - wskaźnik BMI/index.php
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Zadania/Z110 - wskaźnik BMI/index.php
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<?php
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$fullText = '';
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if($_SERVER['REQUEST_METHOD'] == 'POST') {
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$waga = htmlspecialchars($_POST['waga']);
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$wzrost = htmlspecialchars($_POST['wzrost']);
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$text = '';
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if(is_numeric($waga) && is_numeric($wzrost) && $waga > 0 && $wzrost > 0) {
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$bmi = $waga / (($wzrost/100) * ($wzrost/100));
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$bmi = number_format($bmi, 2);
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if($bmi < 16) {
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$text = 'Wygłodzenie';
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} elseif($bmi >= 16 && $bmi < 16.99) {
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$text = 'Wychudzenie';
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} elseif($bmi >= 17 && $bmi < 18.49) {
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$text = 'Niedowaga';
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} elseif($bmi >= 18.5 && $bmi < 24.99) {
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$text = 'Optimum';
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} elseif($bmi >= 25 && $bmi < 29.99) {
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$text = 'Nadwaga';
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} elseif($bmi >= 30 && $bmi < 34.99) {
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$text = 'Otyłość I stopnia';
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} elseif($bmi >= 35 && $bmi < 39.99) {
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$text = 'Otyłość II stopnia';
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} elseif($bmi >= 40) {
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$text = 'Otyłość III stopnia';
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}
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}
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$fullText = "
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<div class='box'>
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Waga: $waga kg<br>
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Wzrost: $wzrost cm<br>
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BMI: $bmi<br>
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Klasyfikacja: $text
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";
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}
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?>
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<!doctype html>
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<html lang="pl">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport"
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content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Z110 - Wskaźnik BMI</title>
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<link rel="stylesheet" href="style.css">
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</head>
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<body>
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<header>
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<h1>Zadanie Z110</h1>
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<h2>Autor: Jakub Grzegorczyk</h2>
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</header>
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<div class="box">
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<p>
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Napisz program, który na podstawie podanej wagi (w kilogramach) i wzrostu (w centymetrach) oblicza wskaźnik BMI i wynik wyświetla na ekranie. Program powinien przyjmować dane od użytkownika w formularzu, zweryfikować, czy waga i wzrost są liczbami dodatnimi, obliczyć BMI według wzoru: BMI = waga / (wzrost²), gdzie wzrost jest konwertowany z centymetrów na metry (dzieląc przez 100), wyświetlić wynik w czytelny sposób oraz sklasyfikować BMI według następujących kategorii: - < 16: Wygłodzenie, - 16 - 16.99: Wychudzenie, - 17 - 18.49: Niedowaga, - 18.5 - 24.99: Optimum, - 25 - 29.99: Nadwaga, - 30 - 34.99: Otyłość I stopnia, - 35 - 39.99: Otyłość II stopnia, - ≥ 40: Otyłość III stopnia.
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</p>
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<img src="image042.jpg" alt="Skala BMI">
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<ul>
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<li>Sprawdź, czy waga i wzrost są liczbami za pomocą is_numeric().</li>
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<li>Zweryfikuj, czy waga i wzrost są dodatnie (większe od 0).</li>
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<li>Oblicz BMI według wzoru: BMI = waga / (wzrost * wzrost), gdzie wzrost w metrach to wzrost w centymetrach podzielony przez 100.</li>
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<li>Sformatuj wynik BMI do 2 miejsc po przecinku za pomocą number_format() lub sprintf().</li>
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<li>Użyj warunku if-elseif, aby sklasyfikować BMI na podstawie podanych zakresów.</li>
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<li>Zabezpiecz dane wejściowe za pomocą htmlspecialchars() przy pobieraniu, aby chronić przed XSS.</li>
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</ul>
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</div>
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<div class="box">
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<form action="index.php" method="post">
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<fieldset>
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<legend>Podaj dane:</legend>
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<label for="waga">Waga (kg): </label>
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<input type="number" name="waga" id="waga">
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<label for="wzrost">Wzrost (cm):</label>
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<input type="number" name="wzrost" id="wzrost">
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</fieldset>
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<button type="submit">Wyślij</button>
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</form>
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</div>
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<?php if($_SERVER['REQUEST_METHOD'] == 'POST') {echo $fullText;} ?>
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</body>
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</html>
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291
Zadania/Z110 - wskaźnik BMI/style.css
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291
Zadania/Z110 - wskaźnik BMI/style.css
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/* === UNIVERSAL SCHOOL TEMPLATE CSS (BLACK & WHITE EDITION) === */
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/* clean, modern, and copy-paste friendly for all projects */
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/* === RESET === */
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* {
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box-sizing: border-box;
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margin: 0;
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padding: 0;
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}
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/* === VARIABLES === */
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:root {
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--accent: #000;
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--border: #000;
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--bg: #fff;
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--bg-alt: #f7f7f7;
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--text: #111;
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--shadow: rgba(0, 0, 0, 0.15) 3px 3px 6px;
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--radius: 1em;
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--max-width: 1300px;
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}
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/* === PAGE === */
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body {
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Verdana, sans-serif;
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background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
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color: var(--text);
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display: flex;
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flex-direction: column;
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align-items: center;
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min-height: 100vh;
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line-height: 1.6;
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}
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/* === HEADER === */
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header {
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border: 2px solid var(--border);
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border-radius: var(--radius);
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padding: 20px 30px;
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box-shadow: var(--shadow);
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background: var(--bg);
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width: 95%;
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max-width: var(--max-width);
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text-align: center;
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margin-top: 25px;
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transition: box-shadow 0.3s ease, transform 0.2s ease;
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}
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header:hover {
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box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
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transform: translateY(-2px);
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}
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header h1 {
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font-size: 2.2rem;
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}
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header h2 {
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margin-top: 0.5rem;
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font-weight: 400;
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font-size: 1.1rem;
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color: #444;
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}
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/* === BOX === */
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.box {
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border: 2px solid var(--border);
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border-radius: var(--radius);
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padding: 25px 35px;
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margin-top: 25px;
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background: var(--bg);
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box-shadow: var(--shadow);
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width: 95%;
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max-width: var(--max-width);
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transition: transform 0.2s ease, box-shadow 0.2s ease;
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}
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.box:hover {
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transform: translateY(-2px);
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box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
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}
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/* === TEXT ELEMENTS === */
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p {
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margin-bottom: 1rem;
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}
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h1, h2, h3, h4 {
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margin-bottom: 0.5rem;
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font-weight: 600;
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}
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a {
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color: #000;
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text-decoration: underline;
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font-weight: 500;
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}
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a:hover {
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opacity: 0.7;
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}
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/* === LISTS === */
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ul, ol {
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margin: 1rem 0 1rem 1.5rem;
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}
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li {
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margin-bottom: 0.4rem;
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}
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/* === TABLES === */
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table {
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width: 100%;
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border-collapse: collapse;
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margin: 1rem 0;
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background: var(--bg);
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border: 2px solid var(--border);
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border-radius: 0.6em;
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overflow: hidden;
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box-shadow: var(--shadow);
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}
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th, td {
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padding: 10px 12px;
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border-bottom: 1px solid #ccc;
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}
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th {
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background: var(--bg-alt);
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font-weight: bold;
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text-align: left;
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}
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tr:hover {
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background: #f2f2f2;
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}
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/* === FORMS === */
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form {
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display: flex;
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flex-direction: column;
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gap: 1.2rem;
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margin-top: 1rem;
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}
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fieldset {
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border: 2px solid var(--border);
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border-radius: 0.8em;
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padding: 1.2rem 1.5rem;
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background: var(--bg-alt);
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}
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legend {
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font-weight: bold;
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color: #000;
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padding: 0 0.4rem;
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font-size: 1.05rem;
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}
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label {
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font-weight: 500;
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}
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input[type="text"],
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input[type="email"],
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input[type="password"],
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input[type="number"],
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input[type="tel"],
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textarea,
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select {
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width: 100%;
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font-size: 1rem;
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margin-top: 6px;
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margin-bottom: 8px;
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border: 2px solid var(--border);
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border-radius: 0.5em;
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padding: 0.4rem 0.5rem;
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transition: all 0.2s ease;
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background: var(--bg);
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}
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textarea {
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resize: vertical;
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min-height: 100px;
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}
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input:focus,
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textarea:focus,
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select:focus {
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outline: none;
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border-color: #000;
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box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
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background: #f9f9f9;
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}
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input[type="radio"],
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input[type="checkbox"] {
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accent-color: #000;
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transform: scale(1.2);
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margin-right: 0.3rem;
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}
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/* === BUTTONS === */
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button,
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input[type="submit"],
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input[type="button"],
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input[type="reset"] {
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padding: 10px 20px;
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border: 2px solid var(--border);
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border-radius: 0.5em;
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font-weight: bold;
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font-size: 1rem;
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background: linear-gradient(180deg, #fff 0%, #f2f2f2 100%);
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cursor: pointer;
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transition: all 0.2s ease;
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align-self: flex-start;
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}
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button {
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width: 100%;
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}
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button:hover,
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input[type="submit"]:hover,
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input[type="button"]:hover,
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input[type="reset"]:hover {
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background: #eaeaea;
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box-shadow: rgba(0, 0, 0, 0.25) 3px 3px 6px;
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transform: translateY(-2px);
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}
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button:active,
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input[type="submit"]:active,
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input[type="button"]:active,
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input[type="reset"]:active {
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transform: translateY(0);
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box-shadow: rgba(0, 0, 0, 0.15) 1px 1px 3px;
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background: #f7f7f7;
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}
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/* === HR, CODE, ETC. === */
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hr {
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border: 0;
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border-top: 2px solid var(--border);
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margin: 1.5rem 0;
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}
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img {
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max-width: 100%;
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border-radius: 0.5em;
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}
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code, pre {
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background: #f4f4f4;
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border: 1px solid #ccc;
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border-radius: 0.4em;
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padding: 0.3em 0.5em;
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font-family: "Courier New", monospace;
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}
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pre {
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padding: 1em;
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overflow-x: auto;
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}
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/* === RESPONSIVE === */
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@media (max-width: 900px) {
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header, .box {
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width: 95%;
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padding: 20px;
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}
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button {
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width: 100%;
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}
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textarea {
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width: 100%;
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}
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}
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@media (max-width: 600px) {
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header h1 {
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font-size: 1.7rem;
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}
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header h2 {
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font-size: 0.95rem;
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}
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}
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@@ -217,6 +217,10 @@ input[type="reset"] {
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align-self: flex-start;
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}
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button {
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width: 100%;
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}
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button:hover,
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input[type="submit"]:hover,
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input[type="button"]:hover,
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