:root {
    --bg-color: #0d1117;
    --text-color: #00ff41;
    --text-dim: #008f11;
    --border-color: #00ff41;
    --glow: 0 0 10px #00ff41, 0 0 20px #00ff41;
    --glow-dim: 0 0 5px #008f11;
    --danger: #ff003c;
    --warning: #ffb000;
    --good: #00ff41;
    --font-main: 'Share Tech Mono', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 1.2rem;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
    padding: 20px;
}

/* CRT Effects */
.scanline {
    width: 100%;
    height: 100px;
    background: linear-gradient(0deg, rgba(0,0,0,0) 0%, rgba(0,255,65,0.2) 50%, rgba(0,0,0,0) 100%);
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 10;
    opacity: 0.1;
    animation: scanline 8s linear infinite;
}

.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0) 60%, rgba(0,0,0,0.4) 100%);
    pointer-events: none;
    z-index: 11;
}

@keyframes scanline {
    0% { transform: translateY(-100px); }
    100% { transform: translateY(100vh); }
}

/* Layout */
.container {
    max-width: 600px;
    width: 100%;
    border: 2px solid var(--border-color);
    padding: 30px;
    box-shadow: var(--glow-dim);
    position: relative;
    z-index: 5;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(2px);
}

header {
    margin-bottom: 25px;
    border-bottom: 1px dashed var(--text-dim);
    padding-bottom: 15px;
}

h1 {
    font-size: 2.5rem;
    text-shadow: var(--glow);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.subtitle {
    color: var(--text-dim);
    margin-top: 5px;
}

.panel {
    margin-bottom: 30px;
    border: 1px solid var(--text-dim);
    padding: 20px;
    position: relative;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    position: absolute;
    top: -15px;
    left: 10px;
    background: var(--bg-color);
    padding: 0 10px;
    color: var(--text-color);
}

/* Inputs & Forms */
.display-container, .analyze-container {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.analyze-container {
    margin-top: 15px;
}

input[type="text"] {
    flex-grow: 1;
    width: 100%;
    background: #001100;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 1.5rem;
    padding: 10px 15px;
    outline: none;
    box-shadow: inset 0 0 10px rgba(0, 255, 65, 0.2);
}

input[type="text"]:focus {
    box-shadow: inset 0 0 15px rgba(0, 255, 65, 0.5), 0 0 5px var(--text-color);
}

.btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 1.2rem;
    padding: 10px 20px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s;
    text-shadow: 0 0 5px var(--text-color);
}

.btn:hover {
    background: var(--text-color);
    color: var(--bg-color);
    box-shadow: var(--glow);
}

.primary-btn {
    width: 100%;
    margin-top: 20px;
    font-size: 1.5rem;
    padding: 15px;
}

/* Range Slider */
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 60%;
    background: transparent;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 16px;
    width: 16px;
    background: var(--text-color);
    cursor: pointer;
    box-shadow: 0 0 5px var(--text-color);
    margin-top: -7px;
}

input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 2px;
    cursor: pointer;
    background: var(--text-dim);
}

/* Checkboxes */
.checkbox-row {
    justify-content: flex-start;
}

input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border: 1px solid var(--text-color);
    background: transparent;
    cursor: pointer;
    position: relative;
    margin-right: 15px;
}

input[type="checkbox"]:checked::after {
    content: "X";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 1.2rem;
    text-shadow: var(--glow);
}

.checkbox-label {
    cursor: pointer;
}

/* Strength Meter */
.strength-meter {
    margin-top: 15px;
}

.strength-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.blink {
    animation: blinker 1.5s linear infinite;
}

@keyframes blinker {
    50% { opacity: 0.3; }
}

.strength-bars {
    display: flex;
    gap: 5px;
    height: 15px;
}

.bar {
    flex: 1;
    border: 1px solid var(--text-dim);
    background: transparent;
    transition: all 0.3s;
}

.feedback {
    margin-top: 15px;
    color: var(--text-dim);
    font-size: 1.1rem;
    min-height: 20px;
}

.crack-time {
    margin-top: 10px;
    font-size: 1.2rem;
    color: var(--warning);
    text-shadow: 0 0 5px var(--warning);
}

footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-dim);
}

/* Responsive Design */
@media (max-width: 600px) {
    body {
        padding: 5px;
    }
    .container {
        padding: 15px 10px;
        border-width: 1px;
        margin: 0;
    }
    header {
        margin-bottom: 10px;
        padding-bottom: 5px;
    }
    h1 {
        font-size: 1.5rem;
    }
    .subtitle {
        font-size: 0.85rem;
        line-height: 1.2;
        margin-top: 2px;
    }
    .panel {
        margin-bottom: 15px;
        padding: 15px 10px;
    }
    h2 {
        font-size: 1.1rem;
        top: -12px;
    }
    .settings {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        margin-bottom: 10px;
    }
    .setting-row {
        margin-bottom: 0;
    }
    .setting-row:not(.checkbox-row) {
        grid-column: span 2;
        flex-direction: row;
        align-items: center;
        margin-bottom: 5px;
    }
    input[type="range"] {
        flex-grow: 1;
        width: auto;
    }
    .checkbox-label {
        font-size: 0.95rem;
    }
    input[type="checkbox"] {
        width: 16px;
        height: 16px;
        margin-right: 8px;
    }
    .display-container, .analyze-container {
        flex-direction: row;
        margin-bottom: 10px;
        gap: 5px;
    }
    .analyze-container {
        margin-top: 10px;
    }
    input[type="text"] {
        font-size: 1.1rem;
        padding: 6px 10px;
    }
    .btn {
        width: auto;
        margin-top: 0;
        padding: 6px 10px;
        font-size: 1rem;
    }
    .primary-btn {
        font-size: 1.2rem;
        padding: 10px;
        margin-bottom: 10px !important;
        width: 100%;
    }
    .strength-meter {
        margin-top: 5px;
    }
    .feedback, .crack-time {
        margin-top: 5px;
        font-size: 0.95rem;
        line-height: 1.2;
    }
    footer {
        margin-top: 10px;
    }
    footer p {
        margin-top: 0px !important;
        margin-bottom: 5px;
    }
}