.sky-chart-hero {
    background:
        radial-gradient(circle at 84% 20%, rgba(67, 119, 214, 0.24), transparent 24rem),
        linear-gradient(135deg, #071426 0%, #10284a 58%, #173866 100%);
    color: #fff;
    padding: 2.5rem 0 2.25rem;
}
.sky-chart-hero .tools-back-link { color: rgba(255,255,255,.72); }
.sky-chart-hero-grid {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
}
.sky-chart-hero h1 {
    margin: .55rem 0 .8rem;
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(2rem, 4vw, 3.25rem);
}
.sky-chart-hero p {
    max-width: 760px;
    margin: 0;
    color: rgba(255,255,255,.78);
    font-size: 1.05rem;
}
.sky-chart-hero-actions {
    display: flex;
    gap: .7rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.sky-chart-section { background: #f4f7fb; }
.interactive-sky-chart { display: grid; gap: 1.25rem; }
.sky-chart-mode-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .8rem;
    max-width: 760px;
}
.sky-chart-mode {
    border: 1px solid #d7dfeb;
    background: #fff;
    color: #243349;
    border-radius: 16px;
    padding: .9rem 1rem;
    display: flex;
    gap: .8rem;
    align-items: center;
    text-align: left;
    box-shadow: 0 8px 24px rgba(22, 43, 77, .06);
}
.sky-chart-mode i {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: #eef4ff;
    color: #376ab3;
}
.sky-chart-mode span { display: grid; gap: .15rem; }
.sky-chart-mode small { color: #6d7c91; font-size: .78rem; }
.sky-chart-mode.active {
    border-color: #2c68ba;
    box-shadow: 0 0 0 2px rgba(44,104,186,.11), 0 10px 28px rgba(22,43,77,.08);
}
.sky-chart-mode.active i { background: #2c68ba; color: #fff; }

.sky-chart-layout {
    display: grid;
    grid-template-columns: minmax(270px, 330px) minmax(0, 1fr);
    gap: 1.25rem;
    align-items: start;
}
.sky-chart-sidebar {
    display: grid;
    gap: 1rem;
    position: sticky;
    top: 90px;
}
.sky-chart-control-card,
.sky-chart-map-card,
.sky-chart-selection-card {
    background: #fff;
    border: 1px solid #dfe6ef;
    border-radius: 20px;
    box-shadow: 0 12px 32px rgba(28, 45, 72, .07);
}
.sky-chart-control-card { padding: 1rem; }
.sky-chart-card-heading { margin-bottom: 1rem; }
.sky-chart-card-heading h2 {
    margin: .2rem 0 0;
    font-size: 1.08rem;
}
.sky-chart-control-card .form-group { margin-bottom: .9rem; }
.sky-chart-control-card .form-group:last-child { margin-bottom: 0; }
.sky-chart-control-card label {
    display: block;
    margin-bottom: .38rem;
    color: #344258;
    font-size: .84rem;
    font-weight: 700;
}
.sky-chart-control-card .form-text {
    color: #7a889b;
    font-size: .73rem;
}
.sky-chart-quick-targets {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
    margin-top: .75rem;
}
.sky-chart-quick-targets button {
    border: 1px solid #d4deeb;
    border-radius: 999px;
    background: #f8fbff;
    color: #355272;
    padding: .38rem .62rem;
    font-size: .76rem;
    font-weight: 700;
}
.sky-chart-quick-targets button:hover {
    border-color: #2c68ba;
    color: #205b9f;
}
.sky-chart-date-time-grid,
.sky-chart-coordinate-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .65rem;
}
.sky-chart-custom-location {
    border: 1px solid #dfe6ef;
    border-radius: 14px;
    padding: .8rem;
    margin: .75rem 0;
    background: #f8fafc;
}
.sky-chart-main {
    min-width: 0;
    display: grid;
    gap: 1rem;
}
.sky-chart-map-card { overflow: hidden; }
.sky-chart-map-heading {
    padding: 1rem 1.1rem;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    border-bottom: 1px solid #e0e7f0;
}
.sky-chart-map-heading h2 {
    margin: .15rem 0 .15rem;
    font-size: 1.22rem;
}
.sky-chart-map-heading p {
    margin: 0;
    color: #708096;
    font-size: .82rem;
}
.sky-chart-kicker {
    text-transform: uppercase;
    letter-spacing: .09em;
    color: #6f8098;
    font-size: .7rem;
    font-weight: 800;
}
.sky-chart-map-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}
.sky-chart-stage-wrap {
    position: relative;
    min-height: 620px;
    background: #050b14;
}
.sky-chart-aladin {
    width: 100%;
    height: 620px;
}
.sky-chart-loading {
    position: absolute;
    inset: 0;
    display: grid;
    place-content: center;
    gap: .75rem;
    text-align: center;
    color: #dce7f7;
    background: linear-gradient(145deg, rgba(6,16,31,.96), rgba(13,34,61,.92));
    z-index: 4;
}
.sky-chart-loading[hidden] { display: none; }
.sky-chart-spinner {
    width: 34px;
    height: 34px;
    margin: 0 auto;
    border-radius: 50%;
    border: 3px solid rgba(255,255,255,.2);
    border-top-color: #5eead4;
    animation: sky-chart-spin .8s linear infinite;
}
@keyframes sky-chart-spin { to { transform: rotate(360deg); } }
.sky-chart-status-bar {
    min-height: 48px;
    padding: .75rem 1rem;
    background: #0c1a30;
    color: #cbd8e9;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-size: .8rem;
}
.sky-chart-status-bar i { color: #5eead4; margin-right: .35rem; }
#sky-chart-visible-count {
    color: #8fa4bd;
    white-space: nowrap;
}
.sky-chart-selection-card { padding: 1rem 1.1rem; }
.sky-chart-selection-empty {
    display: flex;
    align-items: center;
    gap: .8rem;
    color: #6d7c90;
}
.sky-chart-selection-empty > i {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: #eef4fb;
    color: #3d6da8;
}
.sky-chart-selection-empty strong { color: #28384e; }
.sky-chart-selection-empty p { margin: .18rem 0 0; font-size: .83rem; }
.sky-chart-selection-heading {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}
.sky-chart-selection-heading h2 {
    margin: .15rem 0 .2rem;
    font-size: 1.25rem;
}
.sky-chart-selection-heading p {
    margin: 0;
    color: #718096;
    font-size: .84rem;
}
.sky-chart-selection-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: .65rem;
    margin-top: 1rem;
}
.sky-chart-selection-stats article {
    background: #f7f9fc;
    border: 1px solid #e3e9f1;
    border-radius: 13px;
    padding: .7rem;
    display: grid;
    gap: .2rem;
}
.sky-chart-selection-stats span {
    color: #7a899c;
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    font-weight: 700;
}
.sky-chart-selection-stats strong { color: #243349; font-size: .9rem; }
.sky-chart-selection-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    margin-top: 1rem;
}
.sky-chart-note {
    margin: 0;
    color: #748399;
    font-size: .8rem;
    line-height: 1.55;
}
.sky-chart-note i { margin-right: .3rem; color: #4773aa; }
.sky-chart-error { margin: 0; font-size: .82rem; }
.sky-chart-tonight-controls[hidden] { display: none !important; }

@media (max-width: 991px) {
    .sky-chart-hero-grid { align-items: flex-start; flex-direction: column; }
    .sky-chart-hero-actions { justify-content: flex-start; }
    .sky-chart-layout { grid-template-columns: 1fr; }
    .sky-chart-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sky-chart-sidebar .sky-chart-error { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
    .sky-chart-mode-switch,
    .sky-chart-sidebar,
    .sky-chart-selection-stats { grid-template-columns: 1fr; }
    .sky-chart-map-heading,
    .sky-chart-selection-heading { align-items: flex-start; flex-direction: column; }
    .sky-chart-map-actions { width: 100%; }
    .sky-chart-stage-wrap,
    .sky-chart-aladin { height: 500px; min-height: 500px; }
    .sky-chart-status-bar { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 480px) {
    .sky-chart-date-time-grid,
    .sky-chart-coordinate-grid { grid-template-columns: 1fr; }
    .sky-chart-stage-wrap,
    .sky-chart-aladin { height: 430px; min-height: 430px; }
}