* { -webkit-tap-highlight-color:transparent; touch-action:manipulation; }
.main-content { min-height:calc(100vh - 160px); padding:clamp(16px,3vw,32px) 12px 40px; background:#fff; }
[data-theme="dark"] .main-content { background:linear-gradient(180deg,rgba(9,15,22,.98),rgba(5,10,16,.95)); }
.mod-container { max-width:1100px; margin:0 auto; }
.mod-card {
    background:#fff; border-radius:36px; padding:clamp(14px,2vw,26px);
    box-shadow:0 10px 24px rgba(15,23,42,.08);
    border:1px solid rgba(148,163,184,.22); position:relative; overflow:hidden;
}
[data-theme="dark"] .mod-card {
    background:linear-gradient(155deg,rgba(10,31,47,.97),rgba(5,16,25,.98) 58%,rgba(8,27,40,.97)),#0b1d2b;
    box-shadow:0 20px 48px rgba(0,0,0,.32); border-color:rgba(94,188,245,.24);
}
.mod-card::before {
    content:""; position:absolute; inset:0; pointer-events:none;
    background:radial-gradient(circle at top right,rgba(255,194,92,.12),transparent 24%),
               radial-gradient(circle at top left,rgba(74,219,255,.12),transparent 24%);
}
.top-row { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; margin-bottom:16px; }
.mod-title {
    font-weight:800; font-size:clamp(1.3rem,3.5vw,2.2rem);
    background:linear-gradient(145deg,#0f5fd0,#00a7d8 48%,#f97316);
    -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
    margin:0;
}
[data-theme="dark"] .mod-title {
    background:linear-gradient(145deg,#f8fdff,#7bd7ff 48%,#ffd27a);
    -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
}
/* Experiment tabs */
.tab-row { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:16px; }
.tab-btn {
    background:rgba(255,255,255,.06); border:1px solid rgba(95,179,228,.3);
    color:#7bd7ff; font-size:.76rem; padding:7px 14px; border-radius:30px;
    cursor:pointer; transition:.1s; font-weight:700; user-select:none;
}
.tab-btn:hover, .tab-btn.active { background:rgba(74,219,255,.14); border-color:#4adbff; color:#fff; }
/* Split layout */
.split { display:grid; grid-template-columns:300px 1fr; gap:14px; }
@media(max-width:680px){ .split { grid-template-columns:1fr; } }
.ctrl-panel {
    background:linear-gradient(180deg,rgba(7,24,36,.92),rgba(7,24,36,.74));
    border:1px solid rgba(95,179,228,.22); border-radius:22px; padding:18px;
}
.ctrl-section-title { color:#7bd7ff; font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; margin:0 0 12px; }
.ctrl-group { margin-bottom:14px; }
.ctrl-label { color:#cbeeff; font-size:.78rem; display:flex; justify-content:space-between; margin-bottom:5px; font-weight:500; }
.ctrl-label span { color:#fff7b5; font-weight:700; font-family:monospace; }
input[type=range].sl {
    width:100%; height:7px;
    background:linear-gradient(90deg,#1f77a0,#56c5ff);
    border-radius:40px; -webkit-appearance:none; appearance:none;
}
input[type=range].sl::-webkit-slider-thumb {
    -webkit-appearance:none; width:20px; height:20px; background:#fff;
    border-radius:50%; box-shadow:0 2px 6px rgba(0,0,0,.5),0 0 0 2px #1793d1; cursor:pointer;
}
/* Preview */
.preview-panel {
    background:linear-gradient(180deg,rgba(7,24,36,.92),rgba(7,24,36,.74));
    border:1px solid rgba(95,179,228,.22); border-radius:22px;
    display:flex; flex-direction:column; overflow:hidden;
}
.preview-header { padding:12px 16px; border-bottom:1px solid rgba(95,179,228,.12);
    display:flex; justify-content:space-between; align-items:center; }
.preview-label { color:#7bd7ff; font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; }
#previewFrame { flex:1; min-height:360px; border:none; background:#04080e; width:100%; }
/* Code readout */
.code-readout {
    background:rgba(0,0,0,.4); border-top:1px solid rgba(95,179,228,.1);
    padding:10px 14px; font-family:'Courier New',monospace; font-size:.72rem;
    color:#4adbff; white-space:pre; overflow-x:auto; max-height:90px; overflow-y:auto;
}
.btn-reset {
    background:linear-gradient(180deg,rgba(14,42,60,.96),rgba(8,28,42,.96));
    border:1px solid rgba(98,177,223,.38); border-radius:30px;
    color:#ceecff; font-size:.8rem; font-weight:700; padding:7px 14px;
    cursor:pointer; transition:.1s; user-select:none;
}
.btn-reset:hover { border-color:#4adbff; color:#fff; }