:root {
    --theme-color: #007bff;
    --bg-gradient-1: #ffffff;
    --bg-gradient-2: #f4f5f7;
}

body.theme-home {
    --theme-color: #007bff;
    --bg-gradient-1: #1e293b;
    --bg-gradient-2: #0f172a;
}
body.theme-mercure {
    --theme-color: #888888;
    --bg-gradient-1: #2b2b2b;
    --bg-gradient-2: #141414;
}
body.theme-venus {
    --theme-color: #ff8c00;
    --bg-gradient-1: #2b2b2b;
    --bg-gradient-2: #141414;
}
body.theme-terre { --theme-color: #00bfff; --bg-gradient-2: #f0faff; }
body.theme-mars { --theme-color: #ff3b30; --bg-gradient-2: #fff0f0; }
body.theme-jupiter { --theme-color: #ff9800; --bg-gradient-2: #fff7eb; }
body.theme-saturne { --theme-color: #ffc107; --bg-gradient-2: #fffbeb; }
body.theme-uranus { --theme-color: #00e5ff; --bg-gradient-2: #e6ffff; }
body.theme-neptune { --theme-color: #1a56ff; --bg-gradient-2: #ebf0ff; }

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-gradient-2);
    color: #2c3e50;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

.bg-animated {
    position: fixed;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background: radial-gradient(circle at top right, var(--bg-gradient-1), var(--bg-gradient-2));
    z-index: -1;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    z-index: 10;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    letter-spacing: -0.5px;
}

.menu-icon, .help-btn {
    cursor: pointer;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    transition: all 0.2s ease;
    font-size: 1rem;
    color: #475569;
}

.menu-icon:hover, .help-btn:hover {
    background: #f8fafc;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    color: #0f172a;
}

.sidebar {
    position: fixed;
    top: 0;
    left: -320px;
    width: 320px;
    height: 100vh;
    background-color: #ffffff;
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.05);
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    padding: 2rem 0;
}

.sidebar.open {
    left: 0;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    padding: 1rem 2rem;
    cursor: pointer;
    font-weight: 500;
    color: #475569;
    transition: background-color 0.2s, color 0.2s;
    border-left: 3px solid transparent;
}

.sidebar li:hover {
    background-color: #f8fafc;
    color: #0f172a;
    border-left-color: var(--theme-color);
}

#content-area {
    flex: 1;
    padding: 2rem;
    display: flex;
}

.layer {
    display: none;
    width: 100%;
    flex-direction: column;
    flex: 1;
    text-align: center;
    animation: fadeIn 0.4s ease-out;
}

.layer.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.main-img {
    min-height: 25vh;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #94a3b8;
    margin-bottom: 2rem;
}

.main-img iframe,
.main-img img {
    width: 100%;
    max-width: 1200px;
    height: 70vh;
    border: none;
    border-radius: 8px;
}

.main-img img {
    object-fit: cover;
}

.box, .desc-box, .search-bar, .table-container {
    padding: 0.5rem 0;
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
    text-align: center;
}

.data-table {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    border: 1px solid;
    border-color: inherit;
    opacity: 0.85;
    padding: 1rem;
    text-align: center;
    vertical-align: middle;
}

.data-table th {
    font-weight: 600;
    background-color: rgba(150, 150, 150, 0.1);
}

.img-placeholder {
    width: 100px;
    height: 60px;
    background-color: rgba(150, 150, 150, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px dashed currentColor;
    margin: 0 auto;
}

.desc-box {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

#layer-home .desc-box {
    white-space: nowrap;
}

.box h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #1a1a1a;
}

.box p {
    line-height: 1.6;
    color: #475569;
}

.flex-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3.5rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.flex-row .box {
    flex: 1;
    min-width: 280px;
    margin-bottom: 0;
}

.search-bar input {
    width: 100%;
    max-width: 500px;
    padding: 0.75rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    outline: none;
    font-size: 0.95rem;
    text-align: center;
    transition: border-color 0.2s;
}

.search-bar input:focus {
    border-color: var(--theme-color);
}

.ticker-wrap {
    width: 100%;
    overflow: hidden;
    color: #475569;
    padding: 0.75rem 0;
    margin-bottom: 3.5rem;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.ticker {
    display: inline-block;
    white-space: nowrap;
    animation: marquee 15s linear infinite;
    font-weight: 500;
}

@keyframes marquee {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

.site-footer {
    text-align: center;
    padding: 1.5rem;
    background-color: #ffffff;
    color: #94a3b8;
    font-size: 0.85rem;
    border-top: 1px solid #f1f5f9;
    margin-top: auto;
}

body.theme-home {
    color: #e0e0e0;
}

body.theme-home header,
body.theme-home .site-footer {
    background-color: rgba(15, 23, 42, 0.85);
    border-color: #334155;
}

body.theme-home header h1 {
    color: #ffffff;
}

body.theme-home .menu-icon,
body.theme-home .help-btn {
    background-color: #1e293b;
    border-color: #334155;
    color: #b9bbbe;
}

body.theme-home .menu-icon:hover,
body.theme-home .help-btn:hover {
    background-color: #334155;
    color: #ffffff;
}

body.theme-mercure {
    color: #e0e0e0;
}

body.theme-mercure header,
body.theme-mercure .site-footer {
    background-color: rgba(20, 20, 20, 0.85);
    border-color: #333333;
}

body.theme-mercure header h1,
body.theme-mercure .box h2 {
    color: #ffffff;
}

body.theme-mercure .menu-icon,
body.theme-mercure .help-btn {
    background-color: #2b2b2b;
    border-color: #333333;
    color: #a3a3a3;
}

body.theme-mercure .menu-icon:hover,
body.theme-mercure .help-btn:hover {
    background-color: #444444;
    color: #ffffff;
}

body.theme-mercure .ticker-wrap { color: #a3a3a3; border-color: #333333; }
body.theme-mercure .box p, body.theme-mercure .desc-box { color: #a3a3a3; }
body.theme-mercure .site-footer { color: #777777; }

body.theme-mercure .sidebar { background-color: #141414; box-shadow: 4px 0 15px rgba(0, 0, 0, 0.5); }
body.theme-mercure .sidebar li { color: #a3a3a3; }
body.theme-mercure .sidebar li:hover { background-color: #2b2b2b; color: #ffffff; }

body.theme-venus {
    color: #e0e0e0;
}

body.theme-venus header,
body.theme-venus .site-footer {
    background-color: rgba(20, 20, 20, 0.85);
    border-color: #333333;
}

body.theme-venus header h1,
body.theme-venus .box h2 { color: #ffffff; }

body.theme-venus .menu-icon,
body.theme-venus .help-btn { background-color: #2b2b2b; border-color: #333333; color: #a3a3a3; }

body.theme-venus .menu-icon:hover,
body.theme-venus .help-btn:hover { background-color: #444444; color: #ffffff; }

body.theme-venus .ticker-wrap { color: #a3a3a3; border-color: #333333; }
body.theme-venus .box p, body.theme-venus .desc-box { color: #a3a3a3; }
body.theme-venus .site-footer { color: #777777; }

body.theme-venus .sidebar { background-color: #141414; box-shadow: 4px 0 15px rgba(0, 0, 0, 0.5); }
body.theme-venus .sidebar li { color: #a3a3a3; }
body.theme-venus .sidebar li:hover { background-color: #2b2b2b; color: #ffffff; }

body.theme-home .ticker-wrap {
    color: #b9bbbe;
    border-color: #00bfff;
    box-shadow: 0 -2px 10px rgba(0, 191, 255, 0.2), 0 2px 10px rgba(0, 191, 255, 0.2);
}

body.theme-home .box h2 {
    color: #00bfff;
}

body.theme-home .box p,
body.theme-home .desc-box {
    color: #b9bbbe;
}

body.theme-home .site-footer {
    color: #8e9297;
}

body.theme-home .sidebar {
    background-color: #1e293b;
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.5);
}

body.theme-home .sidebar li {
    color: #b9bbbe;
}

body.theme-home .sidebar li:hover {
    background-color: #334155;
    color: #ffffff;
}