/* --- Starry Background for the whole section --- */
.knowledge-section {
    position: relative;
    /* Subtle stardust texture */
    background-image: 
        radial-gradient(1px 1px at 25px 35px, rgba(var(--accent-color-rgb), 0.2), transparent),
        radial-gradient(1px 1px at 50px 100px, rgba(var(--accent-color-rgb), 0.15), transparent),
        radial-gradient(1.5px 1.5px at 150px 150px, rgba(var(--accent-color-rgb), 0.1), transparent),
        radial-gradient(1px 1px at 250px 50px, rgba(var(--accent-color-rgb), 0.2), transparent);
    background-size: 300px 300px;
}

/* --- Refined Element Colors (Healing/Pastel Palette) --- */
:root {
    --color-fire: #FF8A65;
    --color-fire-bg: rgba(255, 138, 101, 0.08);
    --color-earth: #81C784; 
    --color-earth-bg: rgba(129, 199, 132, 0.08);
    --color-air: #64B5F6; 
    --color-air-bg: rgba(100, 181, 246, 0.08);
    --color-water: #9575CD; 
    --color-water-bg: rgba(149, 117, 205, 0.08);
}

[data-bs-theme="dark"] {
    --color-fire: #FFAB91;
    --color-earth: #A5D6A7;
    --color-air: #90CAF9;
    --color-water: #B39DDB;
}

/* --- Planet Profile Card (Cosmic Instrument Style) --- */
.planet-profile-card {
    background: var(--card-color);
    border: 1px solid var(--nav-border-color);
    border-radius: 32px;
    position: relative;
    overflow: hidden;
    box-shadow: 
        inset 0 0 80px rgba(var(--accent-color-rgb), 0.03),
        0 20px 50px -15px rgba(0, 0, 0, 0.08);
    z-index: 1;
}

/* Orbital Lines Decoration */
.planet-profile-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 15%;
    width: 400px;
    height: 400px;
    border: 1px solid rgba(var(--accent-color-rgb), 0.05);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
}

.planet-profile-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 15%;
    width: 250px;
    height: 250px;
    border: 1px dashed rgba(var(--accent-color-rgb), 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: rotate 60s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.planet-symbol-container {
    position: relative;
    z-index: 2;
}

.planet-symbol-large {
    font-size: 5.5rem;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 5px 15px rgba(var(--accent-color-rgb), 0.3));
    animation: floating-animation 4s ease-in-out infinite;
}

/* --- Element Sections with Subtle Textures --- */
.element-section-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 2rem;
    padding-left: 1rem;
    position: relative;
}

/* Fire Texture: Radiating Lines */
#element-fire {
    background-image: radial-gradient(circle at top right, rgba(255, 138, 101, 0.03) 0%, transparent 40%);
}
/* Earth Texture: Dots/Crystal */
#element-earth {
    background-image: radial-gradient(rgba(129, 199, 132, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}
/* Air Texture: Flowing Lines */
#element-air {
    background-image: linear-gradient(45deg, rgba(100, 181, 246, 0.02) 25%, transparent 25%, transparent 50%, rgba(100, 181, 246, 0.02) 50%, rgba(100, 181, 246, 0.02) 75%, transparent 75%, transparent);
    background-size: 40px 40px;
}
/* Water Texture: Soft Waves */
#element-water {
    background-image: radial-gradient(circle at bottom left, rgba(149, 117, 205, 0.05) 0%, transparent 50%);
}

.element-icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 16px; /* Squircle */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

/* --- Mystic Sign Cards --- */
.sign-card {
    background: var(--card-color);
    border: 1px solid var(--nav-border-color);
    border-radius: 28px;
    padding: 2rem !important;
    position: relative;
    transition: all 0.5s cubic-bezier(0.2, 1, 0.3, 1);
    box-shadow: 0 4px 20px -5px rgba(0,0,0,0.05);
}

.sign-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px -15px rgba(var(--accent-color-rgb), 0.15);
    border-color: rgba(var(--accent-color-rgb), 0.3);
}

.sign-watermark {
    position: absolute;
    bottom: -10px;
    right: -10px;
    font-size: 7rem;
    opacity: 0.03;
    transform: rotate(-15deg);
    transition: all 0.6s ease;
    user-select: none;
}

.sign-card:hover .sign-watermark {
    opacity: 0.08;
    transform: rotate(0deg) scale(1.2);
}

.keyword-badge {
    background: rgba(var(--accent-color-rgb), 0.03);
    border: 1px solid rgba(var(--accent-color-rgb), 0.08);
    color: var(--text-muted-color);
    font-size: 0.85rem;
    padding: 0.4rem 1rem;
    transition: all 0.3s ease;
}

.keyword-badge:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 4px 10px rgba(var(--accent-color-rgb), 0.3);
}

/* Specific Element Accent Colors */
.text-element-fire { color: var(--color-fire) !important; }
.bg-element-fire { background-color: var(--color-fire-bg) !important; }
.text-element-earth { color: var(--color-earth) !important; }
.bg-element-earth { background-color: var(--color-earth-bg) !important; }
.text-element-air { color: var(--color-air) !important; }
.bg-element-air { background-color: var(--color-air-bg) !important; }
.text-element-water { color: var(--color-water) !important; }
.bg-element-water { background-color: var(--color-water-bg) !important; }