@font-face {
    font-family: 'VT323';
    src: url('./fonts/VT323-Regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
}
:root {
    --primary-color: #fcd106;
    --background-color: #000000;
    --warning-color: #ff6b00;
    --flash-color: #3A3000;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: VT323, monospace;
    -webkit-tap-highlight-color: transparent;
}
body {
    background: var(--background-color);
    color: var(--primary-color);
    min-height: 100vh;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 9999;
}
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 16, 16, 0.1);
    opacity: 0;
    pointer-events: none;
    z-index: 9998;
    animation: flicker 0.15s infinite;
}
@keyframes flicker {
    0% { opacity: 0.27861; } 5% { opacity: 0.34769; } 10% { opacity: 0.23604; }
    15% { opacity: 0.90626; } 20% { opacity: 0.18128; } 25% { opacity: 0.83891; }
    30% { opacity: 0.65583; } 35% { opacity: 0.67807; } 40% { opacity: 0.26559; }
    45% { opacity: 0.84693; } 50% { opacity: 0.96019; } 55% { opacity: 0.08594; }
    60% { opacity: 0.20313; } 65% { opacity: 0.71988; } 70% { opacity: 0.53455; }
    75% { opacity: 0.37288; } 80% { opacity: 0.71428; } 85% { opacity: 0.70419; }
    90% { opacity: 0.7003; } 95% { opacity: 0.36108; } 100% { opacity: 0.24387; }
}
/* --- Refactored Grouped Styles --- */
.password-display,
.entropy-section,
.seed-display,
input[type="range"],
.checkbox-container,
button,
.generate-instruction,
.instructions {
    background: var(--background-color);
    border: 3px solid var(--primary-color);
}
.lang-option,
h1,
.subtitle,
.password-display,
.entropy-header h3,
.mouse-entropy label,
.seed-display,
label,
.checkbox-container label,
button,
.generate-instruction,
.instructions h3,
.instructions li,
.instructions strong {
    color: var(--primary-color);
    text-shadow: 0 0 3px var(--primary-color);
}
.container {
    background: rgba(252, 209, 6, 0.1);
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 10px var(--primary-color), inset 0 0 10px rgba(252, 209, 6, 0.05);
    padding: 20px;
    width: 100%;
    max-width: 700px;
    position: relative;
    z-index: 1;
    margin: 0 auto;
}
.header-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}
.lang-selector {
    margin-top: 15px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
}
.lang-option {
    cursor: pointer;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    transition: all 0.2s ease;
}
.lang-option:hover {
    text-shadow: 0 0 8px var(--primary-color);
    transform: scale(1.1);
}
.lang-option.active {
    text-decoration: underline;
    font-weight: bold;
}
.lang-separator {
    margin: 0 10px;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
}
h1 {
    text-align: center;
    font-size: clamp(3rem, 14vw, 6rem);
    font-weight: 400;
    text-shadow: 0 0 5px var(--primary-color);
    letter-spacing: 3px;
    line-height: 1;
    margin-bottom: 20px;
}
.subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    margin-top: 5px;
    letter-spacing: 2px;
    margin-bottom: 5px;
}
.password-display {
    padding: 15px;
    margin-bottom: 20px;
    font-size: clamp(1.4rem, 3vw, 3rem);
    min-height: 120px;
    word-break: break-all;
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
#matrixCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: none; /* Initially hidden */
}
#passwordText {
    position: relative;
    z-index: 2;
}
.password-display.generated { 
    animation: flash 0.5s ease; 
}
@keyframes flash {
    0%, 100% { background: var(--background-color); }
    50% { background: var(--flash-color); }
}
.entropy-section {
    padding: 15px;
    margin-bottom: 20px;
}
.entropy-header {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}
.entropy-header h3 {
    font-size: clamp(1.2rem, 3.5vw, 1.8rem);
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    text-align: center;
    justify-content: center;
}
.mouse-entropy { 
    margin-bottom: 15px; 
}
.mouse-entropy label {
    display: block;
    margin-bottom: 10px;
    font-weight: 400;
    font-size: clamp(1.3rem, 3.5vw, 1.8rem);
}
.entropy-bar {
    width: 100%;
    height: 40px;
    background: var(--background-color);
    overflow: hidden;
    border: 3px solid var(--primary-color);
    margin-bottom: 28px;
}
.entropy-fill {
    height: 100%;
    background: var(--primary-color);
    width: 0%;
    transition: width 0.3s ease;
}
.seed-display {
    padding: 12px;
    font-size: clamp(0.9rem, 2.5vw, 1.2rem);
    word-break: break-all;
    max-height: 120px;
    overflow-y: auto;
    margin-bottom: 8px;
}
.controls { 
    margin-bottom: 40px; 
}
.slider-container { 
    margin: 20px 0; 
}
label {
    display: block;
    margin-bottom: 20px;
    font-size: clamp(1.2rem, 3.5vw, 1.8rem);
    font-weight: 400;
}
input[type="range"] {
    width: 100%;
    height: 20px;
    outline: none;
    -webkit-appearance: none;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}
input[type="range"]::-webkit-slider-thumb:active { 
    transform: scale(1.1); 
}
input[type="range"]::-moz-range-thumb {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
}
.length-display {
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 400;
    margin-top: 10px;
    background: var(--background-color);
    color: var(--primary-color);
    padding: 16px;
    border: 3px solid var(--primary-color);
    text-shadow: 0 0 3px var(--primary-color);
}
.checkboxes {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 20px;
}
.checkbox-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 4px;
    transition: all 0.2s ease;
    cursor: pointer;
    min-height: 30px;
    flex-grow: 1;
    flex-basis: calc(50% - 5px);
    min-width: 0;
    text-align: center;
}
.checkbox-container.active { 
    background: var(--primary-color); 
}
.checkbox-container.active label { 
    color: var(--background-color); 
    text-shadow: none; 
}
.checkbox-container:active { 
    transform: scale(0.98); 
}
.checkbox-container:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}
.checkbox-container input { 
    display: none; 
}
.checkbox-container label {
    margin-bottom: 0;
    cursor: pointer;
    font-size: clamp(0.8rem, 2.5vw, 1.1rem);
    font-weight: 400;
    word-break: break-word;
}
.buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}
button {
    padding: 25px 20px;
    font-size: clamp(1.8rem, 5vw, 2.2rem);
    font-weight: 400;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    min-height: 80px;
    touch-action: manipulation;
    flex-grow: 1;
    flex-basis: 200px;
}
button:active {
    background: var(--primary-color);
    color: var(--background-color);
    text-shadow: none;
    transform: scale(0.98);
}
.generate-instruction {
    text-align: center;
    margin-bottom: 20px;
    padding: 12px;
    font-weight: 400;
    font-size: clamp(1.0rem, 3vw, 1.5rem);
    line-height: 1.6;
    min-height: calc(1.6em + 30px); /* 1.6em for one line of text + 24px padding + 6px border */
}
.instructions {
    margin-top: 20px;
    padding: 20px;
    border-left: 10px solid var(--primary-color);
    line-height: 1.8;
}
.instructions h3 {
    margin-bottom: 16px;
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    font-weight: 400;
    cursor: pointer;
    text-align: center;
}
.instructions.collapsible.collapsed #featuresList {
    display: none;
}
.instructions ul { 
    padding-left: 20px; 
}
.instructions li {
    margin-bottom: 12px;
    font-weight: 400;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
}
.instructions strong {
    font-weight: 400;
}
.notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: var(--background-color);
    padding: 15px 25px;
    border: 3px solid var(--background-color);
    box-shadow: 0 0 10px var(--primary-color);
    z-index: 10000;
    font-size: 1.5rem;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}
.notification.show {
    opacity: 1;
    visibility: visible;
}
.security-warning {
    background: var(--background-color);
    border: 3px solid var(--warning-color);
    padding: 15px;
    color: var(--warning-color);
    text-shadow: 0 0 3px var(--warning-color);
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 10001;
    width: 90%;
    max-width: 600px;
    opacity: 0;
    animation: fadeInOut 6s ease-in-out forwards;
    pointer-events: none;
    box-shadow: 0 0 20px rgba(255, 107, 0, 0.5);
}
.security-warning h3 {
    font-size: clamp(1rem, 3.5vw, 1.3rem);
    margin-bottom: 10px;
    text-shadow: 0 0 5px var(--warning-color);
    text-align: center;
}
.security-warning p {
    font-size: clamp(0.9rem, 2.8vw, 1.2rem);
    line-height: 1.5;
    margin-bottom: 0;
}
.breathing-glow {
    animation: breathing-glow 2s infinite ease-in-out;
}
@keyframes breathing-glow {
    0%, 100% {
        box-shadow: 0 0 10px var(--primary-color), inset 0 0 10px rgba(252, 209, 6, 0.15);
        text-shadow: 0 0 3px var(--primary-color);
    }
    50% {
        box-shadow: 0 0 20px var(--primary-color), inset 0 0 10px rgba(252, 209, 6, 1.5);
        text-shadow: 0 0 8px var(--primary-color);
    }
}
.custom-confirm-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10002;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}
.custom-confirm-overlay.show {
    opacity: 1;
    visibility: visible;
}
.custom-confirm-box {
    background: var(--background-color);
    border: 3px solid var(--warning-color);
    box-shadow: 0 0 20px rgba(255, 107, 0, 0.5);
    padding: 30px;
    width: 90%;
    max-width: 500px;
    text-align: center;
    color: var(--warning-color);
    text-shadow: 0 0 3px var(--warning-color);
    position: relative;
    overflow: hidden;
}
.custom-confirm-box::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 50%, rgba(255, 107, 0, 0.1) 50%);
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 1;
}
.custom-confirm-box p {
    font-size: clamp(1.2rem, 3.5vw, 1.6rem);
    margin-bottom: 25px;
    line-height: 1.6;
    white-space: pre-wrap;
    position: relative;
    z-index: 2;
}
.custom-confirm-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    position: relative;
    z-index: 2;
}
.custom-confirm-buttons button {
    padding: 15px 25px;
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    min-height: auto;
    border-color: var(--warning-color);
    color: var(--warning-color);
    text-shadow: 0 0 3px var(--warning-color);
}
.custom-confirm-buttons button:active {
    background-color: var(--warning-color);
    background-image: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    color: var(--background-color);
    text-shadow: none;
}
@keyframes fadeInOut {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    15% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    85% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
}
/* Desktop Optimization */
@media (min-width: 1024px) {
    .container {
        max-width: 1200px;
        padding: 40px;
    }
    .header-controls {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: relative;
    }
    .lang-selector {
        margin-top: 15px;
    }
    .entropy-header {
        flex-direction: row;
        justify-content: center;
        align-items: center;
    }
    .checkboxes {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }
    .checkbox-container {
        flex-basis: calc(25% - 12px);
    }
    .buttons {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 30px;
    }
    .buttons button {
        flex-basis: 280px;
        font-size: 2.5rem;
        padding: 20px;
    }
    @media (hover: hover) {
        button:hover {
            color: var(--background-color);
            text-shadow: none;
        }
        button:not(.custom-confirm-buttons button):hover {
            background: var(--primary-color);
        }
        .custom-confirm-buttons button:hover {
            background-color: var(--warning-color);
            background-image: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.25) 50%);
            background-size: 100% 4px;
        }
        .checkbox-container:hover {
            outline: 2px solid var(--primary-color);
            outline-offset: 2px;
        }
    }
    .generate-instruction { 
        display: block; 
    }
}
/* Landscape mobile optimization */
@media (max-height: 500px) and (orientation: landscape) {
    body {
        align-items: flex-start;
        padding-top: 20px;
        padding-bottom: 20px;
    }
    .container { 
        margin: 10px 0; 
    }
    h1 { 
        margin-bottom: 15px; 
    }
    .generate-instruction, 
    .entropy-section, 
    .controls, 
    .instructions { 
        margin-bottom: 15px; 
    }
}
/* Small screens optimization */
@media (max-width: 480px) {
    .security-warning {
        width: 95%;
        padding: 12px;
    }
}
@media (max-width: 360px) {
    .container { 
        padding: 15px; 
    }
    h1 { 
        letter-spacing: 1px; 
    }
    .password-display, 
    .entropy-section, 
    .controls, 
    .instructions { 
        padding: 12px; 
    }
    .checkbox-container {
        flex-basis: 100%;
        padding: 6px 4px;
    }
    .checkbox-container label {
        font-size: 0.75rem;
    }
}