/* Theme 7: Regal Sapphire & Gold - Variables */
:root {
    --bg-color: #fdfcf7; /* Ivory/Off-white */
    --text-color: #2c3e50; /* Dark Slate Blue/Grey */
    --primary-accent-color: #0033a0; /* Deep Sapphire Blue */
    --secondary-accent-color: #daa520; /* Goldenrod (Gold accent) */
    --card-bg-color: #ffffff;
    --input-bg-color: #f0f4f8; /* Background for input fields */
    --border-color: #e0e7ef; /* Light blueish grey */
    --link-color: var(--primary-accent-color);
    --link-hover-color: #002269; /* Darker Sapphire */
    --nav-bg-color: #f0f4f8; /* Very light blue-grey - using for result container */
    --footer-bg-color: #1d2939; /* Dark Navy/Charcoal */
    --footer-text-color: #fdfcf7;
    --btn-text-color: #ffffff; /* Text color for primary buttons */
    --secondary-btn-text-color: #2c3e50; /* Text color for secondary buttons (like copy with gold bg) */
    --transition-speed: 0.3s;
}

body.dark-mode {
    --bg-color: #0a192f; /* Very Dark Navy Blue */
    --text-color: #e0e7ef; /* Light Steel Blue */
    --primary-accent-color: #4169e1; /* Royal Blue (brighter for dark mode) */
    --secondary-accent-color: #ffd700; /* Brighter Gold */
    --card-bg-color: #172a46; /* Dark Blue for cards */
    --input-bg-color: #0f2138;
    --border-color: #3a506b; /* Muted Dark Blue border */
    --link-color: var(--primary-accent-color);
    --link-hover-color: #6495ed; /* Cornflower Blue (lighter for hover) */
    --nav-bg-color: #172a46;
    --footer-bg-color: #030c17; /* Nearly Black-Blue */
    --footer-text-color: #e0e7ef;
    --btn-text-color: #ffffff; /* Ensure contrast with brighter primary accent */
    --secondary-btn-text-color: #0a192f; /* Dark text for bright gold button */
}

/* Basic Reset and Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

.container {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); /* You might want to adjust shadow for dark mode or use a variable */
    width: 100%;
    max-width: 500px;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

h1 {
    text-align: center;
    color: var(--text-color); /* Or use var(--primary-accent-color) for more emphasis */
    margin-bottom: 25px;
    font-size: 2em;
    transition: color var(--transition-speed) ease;
}

/* Settings Section */
.settings {
    margin-bottom: 25px;
}

.setting {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    transition: border-color var(--transition-speed) ease;
}

.setting:last-child {
    border-bottom: none;
}

.setting label {
    font-size: 0.95em;
    color: var(--text-color);
    opacity: 0.9; /* Slightly less prominent than main text */
    transition: color var(--transition-speed) ease;
}

/* Input field for length */
input[type="number"] {
    width: 60px;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 0.9em;
    text-align: center;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

/* Checkboxes */
input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-accent-color); /* Styles the checkmark color for modern browsers */
}

/* Buttons */
.btn {
    display: block;
    width: 100%;
    padding: 12px 15px;
    font-size: 1.1em;
    font-weight: bold;
    color: var(--btn-text-color);
    background-color: var(--primary-accent-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
    margin-top: 10px;
}

.btn:hover {
    background-color: var(--link-hover-color);
}

.btn:active {
    /* You can define an active state color variable or darken the hover color */
    filter: brightness(0.9);
}

/* Result Container (Password Display and Copy Button) */
.result-container {
    display: flex;
    align-items: center;
    margin-top: 25px;
    background-color: var(--nav-bg-color); /* Using nav-bg for this distinct section */
    padding: 8px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

#password {
    flex-grow: 1;
    padding: 10px;
    font-size: 1em;
    border: 1px solid var(--border-color);
    border-right: none; /* Remove right border as it's next to button */
    border-radius: 5px 0 0 5px;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    outline: none;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

#password::placeholder {
    color: var(--text-color);
    opacity: 0.6;
    transition: color var(--transition-speed) ease, opacity var(--transition-speed) ease;
}

.btn-copy {
    padding: 10px 15px;
    font-size: 1em;
    font-weight: bold; /* Added for better visibility */
    background-color: var(--secondary-accent-color);
    color: var(--secondary-btn-text-color); /* Ensure text is readable on gold */
    border: 1px solid var(--border-color); /* Match border style */
    border-left: none; /* Remove left border as it's next to input */
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, border-color var(--transition-speed) ease;
    margin-top: 0;
    width: auto;
    display: inline-block;
}

.btn-copy:hover {
    filter: brightness(0.9); /* Slightly darken the gold on hover */
}

.btn-copy.copied { /* Class to be added via JS for feedback */
    background-color: var(--primary-accent-color); /* Example: Sapphire for "Copied!" state */
    color: var(--btn-text-color);
}