@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@400;700;800&family=Lato:wght@300;400;700&display=swap');

:root {
    --bg-deep: #030307;
    --card-bg: rgba(20, 22, 30, 0.6);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary-accent: #00f0ff;
    --secondary-accent: #7000ff;
    --danger-accent: #ff0055;
    --success-accent: #00ff88;
    --text-main: #f8fafc;
    --glass-blur: blur(25px);
    --neon-glow: 0 0 20px rgba(0, 240, 255, 0.3);
}

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

body {
    font-family: 'Lato', sans-serif;
    background-color: var(--bg-deep);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 30px 15px;
    position: relative;
    overflow-x: hidden;
}

body::before, body::after {
    content: ''; position: fixed;
    width: 55vw; height: 55vw; border-radius: 50%;
    filter: blur(140px); z-index: 0; opacity: 0.35;
    pointer-events: none;
    animation: floatOrb 25s infinite alternate ease-in-out;
}

body::before { background: radial-gradient(circle, var(--secondary-accent) 0%, transparent 70%); top: -20%; left: -10%; }
body::after { background: radial-gradient(circle, var(--primary-accent) 0%, transparent 70%); bottom: -20%; right: -10%; animation-delay: -12s; }

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(8%, 8%) scale(1.15); }
}

.container {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.8), var(--neon-glow);
    padding: 30px;
    width: 100%;
    max-width: 1100px;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-family: 'Exo 2', sans-serif;
    background: linear-gradient(135deg, #fff, var(--primary-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 30px;
    font-size: 2.2em;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 30px;
    width: 100%;
}

fieldset {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    flex: 1 1 230px;
    min-width: 230px;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

legend {
    font-family: 'Exo 2', sans-serif;
    font-weight: 700;
    padding: 0 10px;
    color: var(--primary-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.input-row {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.switch-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 5px;
}

input[type="number"], select {
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid var(--card-border);
    border-radius: 6px;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
    width: 100%;
}

select option {
    background-color: #0c0d12;
    color: #ffffff;
}

input[type="number"]:focus, select:focus {
    border-color: var(--primary-accent);
    box-shadow: inset 0 0 10px rgba(0,240,255,0.3);
}

input[type="checkbox"] {
    accent-color: var(--primary-accent);
    width: 20px; height: 20px;
    cursor: pointer;
}

.start-coords .coord-inputs {
    display: flex;
    gap: 10px;
}

.start-coords small {
    display: none;
}

.hud-monitor {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#physicsCanvas, #energyCanvas, #kinematicsCanvas {
    background-color: #050508;
    border: 1px solid var(--primary-accent);
    border-radius: 12px;
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.15), inset 0 0 30px rgba(0,0,0,0.8);
    margin-bottom: 20px;
    max-width: 100%;
}

.graphs-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    width: 100%;
}

.sim-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 20px;
    width: 100%;
}

button {
    padding: 12px 25px;
    font-family: 'Exo 2', sans-serif;
    font-size: 1em;
    text-transform: uppercase;
    font-weight: bold;
    color: #fff;
    border: 1px solid transparent;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

button::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1; opacity: 0; transition: opacity 0.3s ease;
}

button:hover::before { opacity: 1; }
button:hover { transform: scale(1.03); }

.primary-btn {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--primary-accent);
}

.primary-btn::before { background: linear-gradient(45deg, var(--primary-accent), var(--secondary-accent)); }
.primary-btn:hover { box-shadow: 0 0 20px rgba(0,240,255,0.5); }

.secondary-btn {
    background: rgba(112, 0, 255, 0.1);
    border-color: var(--secondary-accent);
}

.secondary-btn::before { background: linear-gradient(45deg, var(--secondary-accent), var(--primary-accent)); }
.secondary-btn:hover { box-shadow: 0 0 20px rgba(112,0,255,0.5); }

.danger-btn {
    background: rgba(255, 0, 85, 0.1);
    border-color: var(--danger-accent);
}

.danger-btn::before { background: linear-gradient(45deg, var(--danger-accent), #ff8800); }
.danger-btn:hover { box-shadow: 0 0 20px rgba(255,0,85,0.5); }

#infoPanel {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    margin-bottom: 25px;
    width: 100%;
    font-family: 'Exo 2', sans-serif;
}

.data-row {
    background: rgba(255,255,255,0.05);
    padding: 8px 15px;
    border-radius: 8px;
    font-size: 0.9em;
    color: rgba(255,255,255,0.7);
}

.data-row span {
    color: #fff;
    font-weight: 700;
    font-size: 1.1em;
}

.data-row.ec span { color: var(--success-accent); text-shadow: 0 0 8px rgba(0,255,136,0.5); }
.data-row.epp span { color: var(--primary-accent); text-shadow: 0 0 8px rgba(0,240,255,0.5); }
.data-row.em span { color: var(--danger-accent); text-shadow: 0 0 8px rgba(255,0,85,0.5); }

#summaryInfoPanel {
    width: 100%;
    background: rgba(112, 0, 255, 0.1);
    border: 1px dashed var(--secondary-accent);
    padding: 15px;
    border-radius: 12px;
    margin-top: 10px;
}

#summaryInfoPanel h4 {
    color: var(--primary-accent);
    margin-bottom: 10px;
    font-family: 'Exo 2', sans-serif;
    text-transform: uppercase;
}

#summaryInfoPanel ul {
    list-style-type: square;
    padding-left: 20px;
    color: rgba(255,255,255,0.8);
}

#summaryInfoPanel li { margin-bottom: 5px; }

@media (max-width: 768px) {
    .controls { flex-direction: column; }
    .graphs-container { flex-direction: column; }
    #physicsCanvas, #energyCanvas, #kinematicsCanvas { width: 100%; height: auto; }
}