:root {
    --bg-deep: #050505;
    --bg-card: rgba(20, 20, 20, 0.6);
    --primary: #00ffa3;
    /* Neon Green */
    --primary-dim: rgba(0, 255, 163, 0.1);
    --accent: #00d2ff;
    /* Cyber Blue */
    --danger: #ff0055;
    --warning: #ffbf00;
    --text-main: #ffffff;
    --text-muted: #8899a6;
    --border-glow: rgba(0, 255, 163, 0.3);
    --glass-blur: blur(20px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

body {
    font-size: 18px;
    font-family: 'Inter', 'SF Pro Display', system-ui, sans-serif;
    min-height: 100vh;
    background-color: var(--bg-deep);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    overflow: hidden;
    position: relative;
}

/* Background Canvas Layer */
#bgCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    /* Ensure it's above body bg but below app */
    pointer-events: none;
}

/* Base Styles for .app-container */
.app-container {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: grid;
    z-index: 10;
    overflow: hidden;
    animation: containerInit 1s cubic-bezier(0.19, 1, 0.22, 1);
}

/* FIXED DESKTOP LAYOUT (Scale-to-Fit) */
@media (min-width: 900px) {
    .app-container {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        transform-origin: center center;
        width: 1600px;
        height: 1000px;
        border-radius: 24px;
        box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
        grid-template-columns: 1fr 1fr;
    }
}


/* Typography */
h1,
h2,
h3 {
    font-weight: 200;
    /* Thin, futuristic look */
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.brand-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1rem;
}

.brand-logo {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px var(--primary));
}

.brand-text {
    --font-heading: 'Space Mono', 'Consolas', 'Courier New', monospace;
    --font-body: 'Inter', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-dim);
}

.brand-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.brand-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    opacity: 0.8;
    margin-top: 2px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* LEft Panel - Inputs */
.input-panel {
    padding: 2.5rem;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    overflow-y: auto;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
}

.section-label {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin: 2rem 0 1rem;
    letter-spacing: 0.2em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-label::after {
    content: '';
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    flex: 1;
}

.input-group {
    margin-bottom: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 1.2rem;
    border-radius: 12px;
    border: 1px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.input-group::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    opacity: 0;
    transition: opacity 0.3s;
}

.input-group:focus-within {
    background: rgba(0, 255, 163, 0.03);
    border-color: var(--border-glow);
    box-shadow: 0 0 30px -10px var(--primary-dim);
}

.input-group:focus-within::before {
    opacity: 1;
}

.input-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

label {
    font-size: 1.5rem;
    color: #ccc;
    font-weight: 500;
}

input[type="number"],
select {
    background: transparent;
    border: none;
    color: var(--primary);
    font-family: 'Space Mono', monospace;
    font-size: 1.3rem;
    text-align: left;
    outline: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
    width: 200px;
}

.input-right {
    text-align: right !important;
    /* Force right alignment for numbers */
}

/* Fix option direction */
select option {
    direction: ltr;
    text-align: left;
}

input[type="number"]:focus,
select:focus {
    border-bottom-color: var(--primary);
    text-shadow: 0 0 8px var(--primary-dim);
}

/* ... (Checkboxes) ... */
/* ... */
/* Action Buttons */
.action-area {
    margin-top: 1rem;
    display: flex;
    gap: 10px;
}

.btn-tech {
    flex: 1;
    background: rgba(0, 255, 163, 0.05);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 12px;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

/* Custom Checkboxes */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.checkbox-card {
    position: relative;
    cursor: pointer;
}

.checkbox-content {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 1rem 0.5rem;
    text-align: center;
    transition: all 0.3s;
    font-size: 1.3rem;
    color: var(--text-muted);
}

.checkbox-card input {
    position: absolute;
    opacity: 0;
}

.checkbox-card input:checked+.checkbox-content {
    background: rgba(0, 255, 163, 0.1);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 15px var(--primary-dim);
}

/* RIGHT PANEL */
.vis-panel {
    padding: 2.5rem;
    overflow-y: auto;
    position: relative;
}

.dashboard-grid {
    display: grid;
    gap: 2rem;
}

/* Score Circle */
.score-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    margin-bottom: 0.5rem;
    background: radial-gradient(circle at center, rgba(0, 255, 163, 0.05) 0%, transparent 70%);
}

.score-circle-container {
    position: relative;
    width: 320px;
    height: 320px;
}

.score-svg {
    transform: rotate(-90deg);
    filter: drop-shadow(0 0 10px var(--primary-dim));
}

.score-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.05);
    stroke-width: 4;
}

.score-path {
    fill: none;
    stroke: var(--primary);
    stroke-width: 4;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease-out, stroke 0.5s;
}

.score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-val {
    font-family: 'Space Mono', monospace;
    font-size: 4.5rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    line-height: 1;
}

.score-label {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-top: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Impact Items */
.impact-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.impact-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.4rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: transform 0.3s;
}

.impact-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.impact-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.3));
}

.impact-val {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: 'Space Mono', monospace;
}

.impact-desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: 5px;
}

/* Simulator */
.simulator {
    margin-top: 1.5rem;
    background: linear-gradient(90deg, rgba(0, 210, 255, 0.05) 0%, rgba(0, 0, 0, 0) 100%);
    border-left: 2px solid var(--accent);
    padding: 1.5rem;
    border-radius: 0 16px 16px 0;
}

.sim-output {
    font-size: 1.4rem;
    line-height: 1.6;
    margin-top: 1rem;
    font-weight: 300;
}

.highlight {
    color: var(--accent);
    text-shadow: 0 0 10px rgba(0, 210, 255, 0.4);
    font-weight: 700;
}

/* Range Slider Styled */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin: 10px 0;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 20px;
    width: 6px;
    border-radius: 2px;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary);
    margin-top: -8px;
}

/* Badges */
.badges-area {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.badge {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--warning);
    color: var(--warning);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.1);
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    backdrop-filter: blur(4px);
}

/* Responsive */
/* Mobile Reversion */
@media (max-width: 900px) {
    .app-container {
        position: relative;
        width: 100%;
        min-height: 100vh;
        height: auto;
        border-radius: 0;
        grid-template-columns: 1fr;
        overflow-y: auto;
        transform: none !important;
        /* Ensure no JS interference */
    }

    /* Restore Original Mobile Font Sizes & Spacing */
    body {
        font-size: 16px;
        overflow-y: auto;
    }

    .brand-title {
        font-size: 1.6rem;
    }

    .brand-subtitle {
        font-size: 1rem;
    }

    .section-label {
        font-size: 0.85rem;
    }

    label {
        font-size: 0.9rem;
    }

    input[type="number"],
    select {
        font-size: 1.1rem;
    }

    .checkbox-content {
        font-size: 0.8rem;
    }

    .score-val {
        font-size: 3.5rem;
    }

    .score-label {
        font-size: 0.8rem;
    }

    .impact-val {
        font-size: 1.2rem;
    }

    .impact-desc {
        font-size: 0.75rem;
    }

    .sim-output {
        font-size: 1.1rem;
    }

    .btn-tech {
        font-size: 1rem;
    }

    .input-panel {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        padding: 1.5rem;
    }

    .vis-panel {
        height: auto;
        overflow: visible;
        padding: 1.5rem;
    }

    .impact-items {
        grid-template-columns: 1fr;
    }
}

@keyframes containerInit {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

@keyframes popIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Action Buttons */
.action-area {
    margin-top: 1rem;
    display: flex;
    gap: 10px;
}

.btn-tech {
    flex: 1;
    background: rgba(0, 255, 163, 0.05);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 12px;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn-tech:hover {
    background: var(--primary);
    color: #000;
    box-shadow: 0 0 20px var(--primary-dim);
}

.btn-tech::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn-tech:hover::before {
    left: 100%;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.modal-content {
    background: #0a0a0a;
    border: 1px solid var(--primary);
    box-shadow: 0 0 50px rgba(0, 255, 163, 0.1);
    width: 90%;
    max-width: 600px;
    padding: 2rem;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal-overlay.modal-visible {
    display: flex;
    opacity: 1;
}

.modal-overlay.modal-visible .modal-content {
    transform: scale(1);
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.close-btn:hover {
    color: var(--primary);
}

/* Typewriter Effect Text */
.ai-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #e0e0e0;
    white-space: pre-wrap;
    min-height: 200px;
    max-height: 60vh;
    overflow-y: auto;
}

.ai-typing-cursor::after {
    content: '▋';
    animation: blink 1s infinite;
    color: var(--primary);
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}