body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none; /* Запрещает браузеру тянуть и обновлять страницу */
    background-color: #fdfae8 !important; 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    user-select: none; 
    -webkit-user-select: none;
    touch-action: none;
    color: #333 !important;
}

#canvas {
    position: absolute;
    width: 3000px; 
    height: 3000px;
    top: -1000px; 
    left: -1000px;
    cursor: grab; 
    background-color: #fdfae8 !important;
    background-image: repeating-linear-gradient(
        transparent, 
        transparent 29px, 
        rgba(0, 0, 0, 0.08) 29px, 
        rgba(0, 0, 0, 0.08) 30px
    );
    transform-origin: center center;
    transition: transform 0.05s ease-out;
}

#canvas:active { cursor: grabbing; }

#svgLines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

#svgLines line {
    stroke: #333 !important;
    stroke-width: 2.5;
    stroke-linecap: round;
}

#nodesContainer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.node {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: #f8f9fa !important;
    border: 2px solid #333 !important;
    color: #333 !important;
    font-weight: bold;
    font-size: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.12); 
    touch-action: none;
    cursor: move;
    transform: translate(-50%, -50%);
    box-sizing: border-box;
}

.center-node {
    width: 120px;
    height: 120px;
    background-image: url('photo.jpg'); 
    background-size: cover;
    background-position: center;
    background-color: #e9ecef;
}

.food-node {
    background-color: #ffe0b2 !important;
}

#addNodeBtn {
    position: fixed;
    bottom: calc(env(safe-area-inset-bottom, 24px) + 24px);
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: #333 !important;
    color: #fff !important;
    font-size: 32px;
    line-height: 54px;
    border: none;
    box-shadow: 0 6px 16px rgba(0,0,0,0.25);
    cursor: pointer;
    z-index: 900;
    touch-action: manipulation;
}

#addNodeBtn:active { transform: scale(0.92); }

/* --- МОДАЛЬНЫЕ ОКНА --- */
/* --- МОДАЛЬНЫЕ ОКНА --- */
.modal-overlay {
    display: none; 
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    max-width: 100vw;
    height: 100dvh;
    background-color: #121212 !important;
    z-index: 99999; 
    justify-content: flex-start;
    align-items: stretch;
    touch-action: none;
    box-sizing: border-box;
    overflow: hidden; /* Полностью блокируем прокрутку фона */
    overscroll-behavior: none; 
}

.modal-content {
    background-color: #1e1e1e !important;
    padding: calc(env(safe-area-inset-top, 24px) + 12px) 16px calc(env(safe-area-inset-bottom, 24px) + 16px);
    border-radius: 0;
    box-shadow: none;
    width: 100vw;
    max-width: 100vw;
    min-width: 0;
    height: 100%;
    position: relative;
    box-sizing: border-box;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior-y: contain; /* Запираем прокрутку строго внутри окна */
    touch-action: pan-y;
    display: flex;
    flex-direction: column;
}

.close-btn {
    position: absolute;
    top: calc(env(safe-area-inset-top, 24px) + 8px);
    right: 18px;
    font-size: 34px;
    line-height: 28px;
    cursor: pointer;
    color: #ffffff !important;
    padding: 6px;
    touch-action: manipulation;
    z-index: 1010;
}

.modal-content h2 {
    margin: 0 0 16px 0;
    text-align: center;
    color: #ffffff !important;
    font-size: 22px;
    font-weight: 700;
}

/* --- СЕТКА ВВОДА --- */
.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 14px;
}

.calc-group { 
    display: flex; 
    flex-direction: column; 
    min-width: 0;
}

.calc-group.full-width { 
    grid-column: span 2; 
}

.calc-group label {
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #e0e0e0 !important;
}

.calc-group input {
    width: 100%;
    padding: 14px 10px;
    border: 1.5px solid #3d3d3d !important;
    border-radius: 10px;
    box-sizing: border-box; 
    font-size: 18px;
    text-align: center;
    background-color: #2a2a2a !important;
    color: #ffffff !important;
    outline: none;
}

.calc-group input:focus {
    border-color: #2ea44f !important;
    background-color: #333333 !important;
}

.calc-btn {
    width: 100%;
    box-sizing: border-box;
    padding: 15px;
    background-color: #2ea44f !important;
    color: #ffffff !important;
    border: none;
    border-radius: 10px;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    touch-action: manipulation;
    margin-bottom: 14px;
}

.calc-btn:active { background-color: #22863a !important; }

/* --- СВОДКА ДНЯ --- */
.result {
    width: 100%;
    box-sizing: border-box;
    margin-top: auto;
    padding: 14px 16px;
    background-color: #252525 !important;
    border: 1px solid #383838 !important;
    border-radius: 12px;
}

.result-header {
    text-align: center;
    font-weight: 700;
    font-size: 15px;
    color: #ffffff !important;
    margin-bottom: 10px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 15px;
    border-bottom: 1px solid #383838 !important;
}

.result-row:last-of-type { border-bottom: none !important; }
.result-row .label { color: #aaaaaa !important; }
.result-row .value { font-weight: 700; color: #4ade80 !important; }

.reset-btn {
    background-color: transparent !important;
    color: #f87171 !important;
    border: 1px solid #4a2020 !important;
    margin-top: 12px;
    padding: 10px;
    font-size: 13px;
    border-radius: 8px;
    font-weight: 600;
}