/* Kingdom Hearts Theme
    Aesthetic: Dark Mode / Heartless - Black, Dark Red, Yellow Accents
*/

:root {
    --kh-bg-dark: #050505;
    --kh-bg-glass: rgba(5, 5, 5, 0.9);
    --kh-accent-red: #8a0303;
    --kh-accent-bright-red: #d32f2f;
    --kh-accent-yellow: #ffcc00; /* Heartless Eyes Yellow */
    --kh-text-white: #f0f0f0;
    --kh-text-silver: #a0a0a0;
    --kh-border-dark: #330000;
}

/* Main Background */
body {
    background-color: var(--kh-bg-dark);
    /* Deep red nebula fade into pitch black */
    background-image: radial-gradient(circle at top right, #320a0a 0%, #000000 80%);
    color: var(--kh-text-white);
    font-family: 'Open Sans', sans-serif;
}

/* Cards / Containers */
.card, .panel, .modal-content {
    /* Darker, "Anti-Sora" shadow look */
    background: linear-gradient(135deg, rgba(20, 0, 0, 0.9) 0%, rgba(10, 10, 10, 0.95) 100%);
    border: 2px solid var(--kh-accent-red);
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(138, 3, 3, 0.3), inset 0 0 30px rgba(0, 0, 0, 0.8);
    color: var(--kh-text-silver);
    overflow: hidden;
    position: relative;
}

/* Headers - Dark Metallic Red */
.card-header, .modal-header, .navbar {
    background: linear-gradient(to right, #2b0505, #1a0202);
    border-bottom: 1px solid var(--kh-accent-red);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: bold;
    color: var(--kh-accent-yellow);
    text-shadow: 0 0 8px rgba(255, 204, 0, 0.6);
}

/* Buttons */
.btn, button {
    /* Gradient Red to Dark Maroon */
    background: linear-gradient(to bottom, #d32f2f, #8a0303);
    border: 1px solid #ff5252;
    border-radius: 20px;
    color: white;
    font-weight: bold;
    text-shadow: 1px 1px 2px black;
    transition: transform 0.1s, filter 0.2s, box-shadow 0.2s;
}

.btn:hover, button:hover {
    filter: brightness(1.3);
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--kh-accent-red);
    cursor: url('https://upload.wikimedia.org/wikipedia/commons/6/6e/Kingdom_Hearts_Cursor.png'), auto;
}

.btn-secondary {
    background: linear-gradient(to bottom, #444, #222);
    border-color: #666;
}

/* Inputs */
input, select, textarea {
    background-color: rgba(0, 0, 0, 0.7) !important;
    border: 1px solid var(--kh-accent-red) !important;
    color: var(--kh-accent-yellow) !important;
    border-radius: 4px;
}

input:focus, select:focus {
    border-color: var(--kh-accent-yellow) !important;
    box-shadow: 0 0 10px rgba(255, 204, 0, 0.3);
    outline: none;
}

/* Navigation / Sidebar Active Items */
.nav-link.active, .menu-item.selected {
    background: linear-gradient(90deg, transparent, rgba(138, 3, 3, 0.4), transparent);
    border-left: 4px solid var(--kh-accent-yellow);
    color: white;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: #050505;
}
::-webkit-scrollbar-thumb {
    background: var(--kh-accent-red);
    border-radius: 5px;
    border: 1px solid #000;
}

/* Icons */
.fa-heart {
    color: #ff0000;
    filter: drop-shadow(0 0 8px #ff0000);
}