* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



body, html {

    width: 100%;

    height: 100%;

    overflow: hidden;

    background-color: #000;

    font-family: monospace;

}



/* BARRA SUPERIORE (TOP NAVBAR) */

.top-navbar {

    position: absolute;

    top: 12px;

    left: 50%;

    transform: translateX(-50%);

    z-index: 2000;

    display: flex;

    align-items: center;

    justify-content: space-between;

    background: rgba(13, 20, 36, 0.92);

    border: 1px solid #2a4365;

    border-radius: 8px;

    padding: 6px 12px;

    gap: 12px;

    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);

    width: max-content;

    max-width: 95vw;

}



    .top-navbar .nav-group {

        display: flex;

        align-items: center;

        gap: 8px;

    }



.btn-nav {

    background: rgba(26, 38, 56, 0.8);

    color: #ffffff;

    border: 1px solid #3182ce;

    padding: 6px 14px;

    font-family: inherit;

    font-size: 15px;

    font-weight: bold;

    cursor: pointer;

    border-radius: 6px;

    transition: all 0.2s ease;

    display: inline-flex;

    align-items: center;

    gap: 6px;

    white-space: nowrap;

}



    .btn-nav:hover {

        background: #2b6cb0;

        border-color: #63b3ed;

        box-shadow: 0 0 8px rgba(99, 179, 237, 0.4);

    }



.btn-nav-primary {

    background: #007bff;

    border-color: #0056b3;

    color: #ffffff;

}



    .btn-nav-primary:hover {

        background: #0069d9;

        border-color: #004085;

        box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);

    }



    .btn-nav-primary.active-pause {

        background: #dc3545;

        border-color: #bd2130;

    }



        .btn-nav-primary.active-pause:hover {

            background: #c82333;

        }



/* DISPLAY CRONOMETRO */

.chrono-display {

    background: #060b13;

    border: 1px solid #1a365d;

    border-radius: 6px;

    padding: 5px 12px;

    color: #00bfff;

    font-size: 18px;

    font-weight: bold;

    letter-spacing: 1px;

    min-width: 130px;

    text-align: center;

    box-shadow: inset 0 0 5px rgba(0, 191, 255, 0.2);

}



/* SVG CANVAS */

svg {

    width: 100vw;

    height: 100vh;

    display: block;

    cursor: crosshair;

}



#coords-mobile-box {

    position: absolute;

    color: yellow;

    background-color: transparent;

    padding: 4px 8px;

    font-size: 14px;

    pointer-events: none;

    user-select: none;

    display: none;

    white-space: pre-line;

}



.sun-corona {

    cx: 50%;

    cy: 50%;

    r: 100px;

    fill: url(#sun-corona-gradient);

    filter: blur(15px);

    opacity: 0.85;

    pointer-events: none;

}



.sun-body {

    cx: 50%;

    cy: 50%;

    r: 50px;

    fill: url(#sun-surface-gradient);

    filter: drop-shadow(0 0 10px #ff6600);

}



/* RENDERING TRIDIMENSIONALE E SFERICO DEI TRE PIANETI */

#planet-1 {

    fill: url(#planet-a-gradient) !important;

}



#planet-2 {

    fill: url(#planet-b-gradient) !important;

}



#planet-3 {

    fill: url(#planet-c-gradient) !important;

}



.effetto-boccia {

    fill: url(#boccia-gradient);

    pointer-events: none; /* Impedisce di bloccare i click del mouse */

}



.star {

    fill: #ffffff;

    opacity: 0.8;

}



/* PANNELLO DI CONTROLLO FLUTTUANTE */

#control-panel {

    position: absolute;

    top: 70px;

    left: 20px;

    width: 320px;

    z-index: 1000;

    background: rgba(15, 15, 25, 0.92);

    border: 1px solid #00ff00;

    border-radius: 8px;

    box-shadow: 0 0 10px rgba(0, 255, 0, 0.2);

    color: #00ff00;

    font-size: 24px;

    font-weight: 600;

    overflow: hidden;

    user-select: none;

    display: none;

}



    #control-panel label,

    #control-panel header,

    #control-panel .title {

        font-size: 16px;

        font-weight: bold;

    }



    #control-panel input[type="text"],

    #control-panel input[type="number"] {

        font-size: 22px;

        font-weight: bold;

        padding: 4px 6px;

    }



.panel-header {

    padding: 8px 12px;

    background: rgba(0, 255, 0, 0.15);

    border-bottom: 1px solid rgba(0, 255, 0, 0.3);

    cursor: move;

    font-weight: bold;

    font-size: 14px;

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.panel-body {

    padding: 10px 12px;

    display: flex;

    flex-direction: column;

    gap: 8px;

    max-height: 80vh;

    overflow-y: auto;

}



/* SEZIONE OPZIONI GRAFICHE */

.panel-options {

    display: flex;

    align-items: center;

    gap: 8px;

    font-size: 13px;

    padding: 6px;

    border: 1px solid rgba(0, 255, 0, 0.2);

    border-radius: 4px;

    background: rgba(0, 0, 0, 0.3);

    cursor: pointer;

}



    .panel-options input[type="checkbox"] {

        accent-color: #00ff00;

        cursor: pointer;

        width: 16px;

        height: 16px;

    }



/* Stili campi input pianeta */

.planet-input-group {

    border: 1px solid rgba(0, 255, 0, 0.2);

    border-radius: 4px;

    padding: 6px;

    background: rgba(0, 0, 0, 0.3);

}



.planet-title {

    font-size: 14px;

    font-weight: bold;

    margin-bottom: 6px;

}



.grid-inputs {

    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 6px;

}



.input-row {

    display: flex;

    align-items: center;

    font-size: 13px;

}



    .input-row label {

        width: 28px;

    }



    .input-row input {

        width: 100%;

        background: #000;

        border: 1px solid rgba(0, 255, 0, 0.4);

        color: #00ff00;

        font-family: inherit;

        font-size: 13px;

        font-weight: bold;

        padding: 3px 5px;

        border-radius: 2px;

        text-align: right;

    }



        .input-row input:focus {

            outline: none;

            border-color: #00ff00;

            background: #051505;

        }



        .input-row input[readonly] {

            border-color: rgba(0, 255, 0, 0.15);

            color: #00cc00;

            background: rgba(0, 0, 0, 0.5);

        }



/* PANNELLO IMPULSI ORBITALI */

.impulse-panel {

    border: 1px solid #2a4365;

    background: rgba(13, 20, 36, 0.9);

    border-radius: 6px;

    padding: 10px;

    margin-top: 4px;

    box-shadow: 0 0 8px rgba(30, 144, 255, 0.2);

}



.impulse-title {

    text-align: center;

    font-size: 14px;

    font-weight: bold;

    color: #63b3ed;

    margin-bottom: 8px;

    border-bottom: 1px solid #2b6cb0;

    padding-bottom: 4px;

}



.impulse-selector {

    display: flex;

    justify-content: center;

    gap: 16px;

    margin-bottom: 10px;

    font-size: 13px;

    color: #9ae6b4;

}



    .impulse-selector label {

        cursor: pointer;

        display: flex;

        align-items: center;

        gap: 4px;

    }



    .impulse-selector input[type="radio"] {

        accent-color: #00ff00;

        cursor: pointer;

    }



.pad-container {

    display: flex;

    flex-direction: column;

    align-items: center;

    gap: 4px;

}



.pad-row {

    display: flex;

    gap: 4px;

}



/* DIMENSIONI E STILE PULSANTI D-PAD */

.btn-pad {

    width: 44px;

    height: 44px;

    background: #1a2638;

    border: 1px solid #3182ce;

    border-radius: 6px;

    color: #ffffff;

    font-size: 18px;

    font-weight: bold;

    cursor: pointer;

    display: flex;

    align-items: center;

    justify-content: center;

    transition: all 0.15s ease;

}



    .btn-pad:hover {

        background: #2b6cb0;

        border-color: #63b3ed;

        box-shadow: 0 0 8px rgba(99, 179, 237, 0.6);

    }



    .btn-pad:active {

        transform: scale(0.92);

        background: #3182ce;

    }



/* STILE PER IL PULSANTE CENTRALE (RESET/X) */

#pad-reset {

    color: #ff5555;

    font-size: 16px;

}



.impulse-readout {

    text-align: center;

    font-size: 15px;

    color: #63b3ed;

    margin-top: 8px;

    font-weight: bold;

}



.orbit-trail {

    fill: none;

    stroke-width: 1.5;

    stroke-dasharray: 5 1;

    pointer-events: none;

}



/* MODALE TEORIA E FORMULE */

.theory-modal-overlay {

    position: fixed;

    top: 0;

    left: 0;

    width: 100vw;

    height: 100vh;

    background: rgba(0, 0, 0, 0.75);

    backdrop-filter: blur(4px);

    z-index: 3000;

    display: none;

    justify-content: center;

    align-items: center;

    padding: 20px;

}



.theory-card {

    background: rgba(13, 20, 36, 0.96);

    border: 1px solid #1e3a8a;

    border-radius: 10px;

    width: 200%;

    max-width: 1000px;

    max-height: 88vh;

    display: flex;

    flex-direction: column;

    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 15px rgba(30, 144, 255, 0.2);

    color: #e2e8f0;

    overflow: hidden;

}



.theory-card-header {

    padding: 16px 20px;

    border-bottom: 1px solid #1e3a8a;

    background: rgba(15, 23, 42, 0.8);

    display: flex;

    justify-content: space-between;

    align-items: flex-start;

}



    .theory-card-header h2 {

        color: #63b3ed;

        font-size: 24px;

        letter-spacing: 1.5px;

        margin-bottom: 4px;

        text-transform: uppercase;

    }



    .theory-card-header h3 {

        color: #a0aec0;

        font-size: 16px;

        font-weight: normal;

    }



.btn-close-control {

    background: transparent;

    color: #a0aec0;

    border: none;

    font-size: 24px;

    font-weight: bold;

    cursor: pointer;

    line-height: 1;

    padding: 2px 6px;

    border-radius: 4px;

    transition: all 0.2s ease;

}



    .btn-close-control:hover {

        color: #ffffff;

        background: rgba(220, 53, 69, 0.8);

    }



.theory-card-body {

    padding: 16px;

    overflow-y: auto;

    display: flex;

    flex-direction: column;

    gap: 8px;

    font-family: system-ui, -apple-system, sans-serif;

    line-height: 1.4;

}



.theory-grid-two {

    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 16px;

}



@media (max-width: 680px) {

    .theory-grid-two {

        grid-template-columns: 1fr;

    }

}



.theory-block {

    background: rgba(15, 23, 42, 0.6);

    border: 1px solid #1e293b;

    border-radius: 8px;

    padding: 14px;

    display: flex;

    flex-direction: column;

    justify-content: space-between;

}



.theory-block-title {

    color: #ecc94b;

    font-size: 15px;

    font-weight: bold;

    text-transform: uppercase;

    letter-spacing: 0.5px;

    margin-bottom: 8px;

}



.theory-block-text {

    color: #cbd5e0;

    font-size: 14px;

    margin-bottom: 4px;

}



/* FORMULE IN STILE ALGEBRICO CLASSICO */

.theory-formula-box {

    background: rgba(2, 6, 23, 0.7);

    border: 1px solid #1e293b;

    border-radius: 6px;

    padding: 4px;

    display: flex;

    justify-content: center;

    align-items: center;

    min-height: 50px;

}



.math-eq {

    display: inline-flex;

    align-items: center;

    gap: 6px;

    font-family: "Times New Roman", Times, serif;

    font-size: 18px;

    color: #ffffff;

}



    .math-eq i {

        font-style: italic;

    }



.frac {

    display: inline-flex;

    flex-direction: column;

    vertical-align: middle;

    text-align: center;

    padding: 0 4px;

}



    .frac .num {

        border-bottom: 1px solid #ffffff;

        padding-bottom: 2px;

        line-height: 1.1;

    }



    .frac .den {

        padding-top: 2px;

        line-height: 1.1;

    }



.theory-section-title {

    color: #63b3ed;

    font-size: 16px;

    font-weight: bold;

    text-transform: uppercase;

    letter-spacing: 0.5px;

    margin-bottom: 6px;

}



.theory-list {

    font-size: 14px;

    color: #cbd5e0;

    padding-left: 20px;

}



    .theory-list li {

        margin-bottom: 8px;

    }



.theory-card-footer {

    padding: 12px 20px;

    border-top: 1px solid #1e3a8a;

    background: rgba(15, 23, 42, 0.8);

    display: flex;

    justify-content: flex-start;

}



.math-n {

    font-family: "Times New Roman", Times, serif;

    font-style: italic;

    font-size: 15px;

    font-weight: bold;

}



/* FIRMA IN CALCE AL FOOTER DELLA MODALE */

.theory-author-credits {

    text-align: center;

    font-size: 11px;

    font-style: italic;

    color: #a0aec0;

    margin-top: 2px;

    width: 100%;

}



/* TOOLTIP PER LE COORDINATE (x ; y) ACCANTO AL MOUSE */

.pos-xy {

    position: fixed;

    z-index: 2500;

    pointer-events: none;

    user-select: none;

    display: none;

    color: white;

    font-size: 14px;

    font-weight: 400;

    font-family: monospace, sans-serif;

    background: rgba(0, 0, 0, 0.4);

    padding: 3px 7px;

    border-radius: 4px;

    border: 1px solid rgba(255, 255, 0, 0.3);

    white-space: nowrap;

}