/* reset & variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #14b8a6;
    --primary-dark: #0d9488;
    --secondary: #06b6d4;
    --bg-dark: #1c1917;
    --bg-secondary: #292524;
    --bg-input: #44403c;
    --text-light: #fafaf9;
    --text-gray: #a8a29e;
    --border-color: #57534e;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* container */
.container {
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

h1 {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 20px;
}

/* form */
.form-group { margin-bottom: 15px; }

label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-gray);
}

input, select {
    width: 100%;
    padding: 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    color: var(--text-light);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.2);
}

button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(20, 184, 166, 0.3);
}

/* result */
#result {
    margin-top: 20px;
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
}