* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto Mono', monospace;
}

body {
    background-color: #0d0d0d;
    color: #e0e0e0;
    line-height: 1.6;
    font-size: 2.5rem;
}

header {
    text-align: center;
    margin: 40px;
}

header h1 {
    color: #00ffd5;
    font-size: 5rem;
    text-shadow: 0 0 10px #00ffd5;
}

main {
    max-width: 2000px;
    margin: 0 auto;
}

section {
    background-color: #1a1a1a;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 0 20px rgba(0, 255, 213, 0.2);
}

section h2 {
    color: #00ffd5;
    margin-bottom: 12px;
    border-bottom: 1px solid #00ffd5;
    padding-bottom: 5px;
}

section p, section li {
    margin-bottom: 10px;
    color: #cccccc;
}

ul {
    padding-left: 40px;
}

ul li {
    margin-bottom: 8px;
}

.image-placeholder {
    margin-top: 15px;
    text-align: center;
}

.image-placeholder img {
    max-width: 100%;
    border-radius: 8px;
    border: 2px solid #00ffd5;
    box-shadow: 0 0 15px rgba(0, 255, 213, 0.3);
}

form {
    display: flex;
    flex-direction: column;
    font-size: 1.2rem;
    gap: 15px;
}

label {
    margin-bottom: 10px;
    margin-left: 30px;
    font-weight: 500;
    color: #e0e0e0;
    font-size: 2.5rem;
}

label[for="length"] {
    margin-top: 40px;
}

input[type="number"] {
    padding: 10px;
    padding-left: 20px;
    margin-bottom: 20px;
    border-radius: 6px;
    border: 1px solid #00ffd5;
    background-color: #111;
    color: #e0e0e0;
    font-size: 3rem;
    width: 50%;
    text-align: left;
    
}

/* Firefox */
input[type=number] {
  -moz-appearance: textfield;
}

/* Chrome, Edge, Safari */
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

fieldset {
    border: 1px solid #00ffd5;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

legend {
    padding: 0 10px;
    color: #00ffd5;
    font-weight: bold;
    font-size: 2.5rem;
}

input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.6);
}

button {
    padding: 14px 24px;
    background-color: #00ffd5;
    color: #0d0d0d;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 2.5rem;
    transition: all 0.3s ease;
    margin-top: 10px;
}

button:hover {
    background-color: #00bfa0;
    box-shadow: 0 0 15px #00ffd5;
}

#password-output {
    background-color: #111;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #00ffd5;
    font-family: 'Courier New', monospace;
    font-size: 2.5rem;
    margin-bottom: 15px;
    word-break: break-all;
    text-align: center;
}

#strength-meter {
    margin-top: 15px;
    font-weight: bold;
    font-size: 2.5rem;
}

#strength-text {
    color: #00ffd5;
    font-size: 2.5rem;
}

footer {
    text-align: center;
    margin-top: 50px;
    color: #555;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2rem;
    }

    section h2 {
        font-size: 1.3rem;
    }

    button {
        font-size: 0.9rem;
    }
}