/* =======================
   Font Definitions
   ======================= */

/* Regular Font */
@font-face {
    font-family: 'Ubuntu';
    src: url('fonts/Ubuntu-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

/* Bold Font */
@font-face {
    font-family: 'Ubuntu';
    src: url('fonts/Ubuntu-Bold.ttf') format('truetype');
    font-weight: bold;
    font-style: normal;
}

/* Italic Font */
@font-face {
    font-family: 'Ubuntu';
    src: url('fonts/Ubuntu-Italic.ttf') format('truetype');
    font-weight: normal;
    font-style: italic;
}

/* =======================
   Body & Form Styles
   ======================= */
body {
    font-family: 'Ubuntu', Calibri, sans-serif;
    background-color: hsl(246, 42%, 13%);
    background: linear-gradient(180deg, hsl(248, 45%, 36%), hsl(245, 53%, 9%));
    color: #ffffff;
    font-weight: bold;
    padding: 20px;       /* spacing inside body */
    margin: 0;           /* remove default margin */
    min-height: 100vh;   /* body fills full viewport height */
}

html {
    height: 100%;
    overflow-y: hidden; /* Prevent vertical scrollbar */
}

/* General font for headings, inputs, labels */
h1, body, input, label {
    font-family: 'Ubuntu', 'Calibri', sans-serif;
}

/* Page title */
h1 {
    color: hsl(246, 42%, 93%);
    text-align: center;
    margin-bottom: 20px;
}

/* Main screen container */
#main-screen {
    max-width: 500px;
    font-size: 1.5em;
    text-align: left;
    padding: 20px;
    border-radius: 40px;
    margin: 0 auto;
    background: linear-gradient(135deg, hsl(246, 34%, 45%), hsl(246, 58%, 39%));
}

/* =======================
   Password Length Inputs
   ======================= */
#length-number {
    background-color: rgba(255, 255, 255, 0.172);
    width: 40px;
    padding: 10px;
    border: none;
    border-radius: 5px;
    margin-left: 5px;
    margin-bottom: 30px; /* spacing between password length and checkboxes */
    font-size: 22px;
    color: hsl(240, 100%, 95%);
    font-weight: bold;
}

/* =======================
   Slider Styles
   ======================= */
#length-slider {
    -webkit-appearance: none; /* remove default slider styling (Chrome, Safari, Edge) */
    appearance: none;         /* standard property for other browsers */
    width: 150px;
    height: 12px;
    border-radius: 6px;
    outline: none;
    margin-left: 10px;
    background: linear-gradient(90deg, hsl(31, 93%, 11%), hsl(31, 100%, 61%));
    transition: background 0.3s ease;
}


/* Slider thumb for Webkit browsers */
#length-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    background: hsl(246, 42%, 93%);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid hsl(246, 42%, 80%);
    box-shadow: 0 0 8px hsl(246, 42%, 93%), 0 2px 6px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

#length-slider::-webkit-slider-thumb:hover {
    background: hsl(246, 42%, 85%);
    box-shadow: 0 0 12px hsl(246, 42%, 93%), 0 2px 6px rgba(0,0,0,0.3);
}

/* Slider thumb for Firefox */
#length-slider::-moz-range-thumb {
    width: 28px;
    height: 28px;
    background: hsl(246, 42%, 93%);
    border-radius: 50%;
    border: 2px solid hsl(246, 42%, 80%);
    cursor: pointer;
    box-shadow: 0 0 8px hsl(246, 42%, 93%), 0 2px 6px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

#length-slider::-moz-range-thumb:hover {
    background: hsl(246, 42%, 85%);
    box-shadow: 0 0 12px hsl(246, 42%, 93%), 0 2px 6px rgba(0,0,0,0.3);
}

/* Firefox track */
#length-slider::-moz-range-track {
    height: 12px;
    background: linear-gradient(90deg, hsl(246, 58%, 39%), hsl(246, 34%, 45%));
    border-radius: 6px;
}

/* Slider thumb for IE/Edge */
#length-slider::-ms-thumb {
    width: 28px;
    height: 28px;
    background: hsl(246, 42%, 93%);
    border-radius: 50%;
    border: 2px solid hsl(246, 42%, 80%);
    cursor: pointer;
}

#length-slider::-ms-track {
    width: 100%;
    height: 12px;
    background: transparent;
    border-color: transparent;
    color: transparent;
}

/* =======================
   Checkbox Styles
   ======================= */
label.checkbox-label {
    display: flex;
    align-items: center;
    margin-bottom: 15px;  /* spacing between checkboxes */
    font-weight: normal;
    color: hsl(243, 100%, 92%);
}

/* Checkbox hidden but still clickable through JS */
label.checkbox-label input[type="checkbox"] {
    margin-right: 8px;
}

/* Smooth transition for text color */
label.checkbox-label span {
    transition: color 0.3s ease;
}

/* Hover effect for text */
label.checkbox-label span:hover {
    color: hsl(28, 71%, 59%);
    cursor: pointer;
}

/* Lock icon next to checkbox */
.lock-icon {
    width: 28px;
    height: 28px;
    margin-right: 8px;
    cursor: pointer;
}

.lock-icon:hover {
    transform: scale(1.1);
}

/* =======================
   Buttons
   ======================= */

/* Generate password button */
#generate {
    background: linear-gradient(145deg, hsl(246, 42%, 93%), hsl(246, 38%, 85%));
    color: hsl(246, 42%, 13%);
    border: none;
    padding: 12px 25px;
    border-radius: 12px;
    cursor: pointer;
    display: block;
    margin: 30px auto; /* spacing above and below */
    text-align: center;
    text-transform: uppercase;
    font-weight: bold;
    font-size: 1em;
    font-family: 'Ubuntu', 'Calibri', sans-serif;

    /* Shadow for depth */
    box-shadow: 0 4px 6px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

/* Hover effect: pop-up and lighten */
#generate:hover {
    background: linear-gradient(145deg, hsl(246, 45%, 96%), hsl(246, 40%, 88%));
    transform: translateY(-2px);
    box-shadow: 0 6px 10px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.25);
}

/* Active effect: press down */
#generate:active {
    transform: translateY(2px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.25), 0 1px 2px rgba(0,0,0,0.2);
    background: linear-gradient(145deg, hsl(246, 38%, 85%), hsl(246, 34%, 78%));
}

/* =======================
   Password Box & Messages
   ======================= */
#password-box {
    background-color: hsl(246, 57%, 14%);
    width: 95%;
    min-width: 120px;
    min-height: 35px;
    padding: 18px 10px;
    border-radius: 8px;
    text-align: center;
    margin: 15px auto; /* spacing above/below password box */
}

#password {
    font-size: 24px;
    font-weight: bold;
    font-family: 'Fira Code', monospace;
    color: hsl(246, 42%, 93%);
    display: block;
    text-align: center;
}

#copied-message {
    position: fixed;             
    bottom: 3%;                     
    left: 50%;                    
    transform: translateX(-50%);
    color: hsl(246, 42%, 93%);
    font-style: italic;
    font-weight: bold;
    text-align: center;
    padding: 12px 25px;
    
    /* Gradient background for modern look */
    background: linear-gradient(135deg, hsla(246, 42%, 35%, 0.85), hsla(246, 42%, 50%, 0.85));
    
    border-radius: 12px;
    
    /* Subtle shadow for depth */
    box-shadow: 0 4px 12px rgba(0,0,0,0.3), 0 2px 4px rgba(0,0,0,0.2);
    
    opacity: 0;                 /* hidden initially */
    pointer-events: none;
    
    /* Smooth transition for fade */
    transition: opacity 0.5s ease-in-out, transform 0.3s ease-in-out;
    z-index: 100;
}

/* Show message with slight pop-up animation */
#copied-message.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-5px);
}

/* =======================
   Password Option Buttons
   ======================= */
#password-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    margin: 15px 0; /* spacing above/below icons */
}

/* Copy button */
#copy {
    width: 30px;
    height: 30px;
    border: none;
    cursor: pointer;
    background-color: transparent;
    background-image: url('images/copy.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

#copy:hover {
    background-image: url('images/copy-hover.png');
}

/* Show/hide password button */
#show-password {
    width: 30px;
    height: 30px;
    border: none;
    cursor: pointer;
    background-color: transparent;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* Default off */
#show-password.off {
    background-image: url('images/visibility-off.png');
}

#show-password.off:hover {
    background-image: url('images/visibility-off-hover.png');
}

/* Visible on */
#show-password.on {
    background-image: url('images/visibility-on.png');
}

#show-password.on:hover {
    background-image: url('images/visibility-on-hover.png');
}