/* ============================================================
   APEX ZERO — FULL MONOCHROME UI THEME (SIDE PANEL EDITION)
============================================================ */

/* ------------------------------------------------------------
   ROOT VARIABLES (DYNAMICALLY UPDATED BY JS)
------------------------------------------------------------ */
:root {
    --bg: #0f0f0f;
    --panel: #1a1a1a;
    --border: #2a2a2a;
    --text: #f5f5f5;
    --text-soft: #bbb;
    --hover: #222;
    --accent: #888;

    --radius: 8px;
    --font-size: 16px;
    --card-size: 160px;
    --grid-gap: 16px;
}

/* LIGHT THEME */
[data-theme="light"] {
    --bg: #f2f2f2;
    --panel: #ffffff;
    --border: #dcdcdc;
    --text: #111;
    --text-soft: #444;
    --hover: #e6e6e6;
}

/* ------------------------------------------------------------
   GLOBAL
------------------------------------------------------------ */
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    font-family: "Inter", sans-serif;
    color: var(--text);
    overflow-x: hidden;
    font-size: var(--font-size);
}

h1, h2, h3, h4 {
    margin: 0 0 10px 0;
    font-weight: 600;
}

/* ------------------------------------------------------------
   LOADING SCREEN
------------------------------------------------------------ */
#loadingScreen {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.4s ease;
}

.loader {
    width: 42px;
    height: 42px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------
   TOPBAR
------------------------------------------------------------ */
#topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.icon-btn {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 6px 10px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: 0.15s;
    color: var(--text);
}

.icon-btn:hover {
    background: var(--hover);
}

/* ------------------------------------------------------------
   MAIN CONTENT
------------------------------------------------------------ */
#content {
    padding: 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--card-size), 1fr));
    gap: var(--grid-gap);
}

/* ------------------------------------------------------------
   SEARCH BAR
------------------------------------------------------------ */
#searchInput {
    width: 100%;
    padding: 12px;
    margin-bottom: 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    font-size: var(--font-size);
}

/* ------------------------------------------------------------
   GAME CARDS
------------------------------------------------------------ */
.game-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
    cursor: pointer;
    transition: 0.15s;
}

.game-card:hover {
    background: var(--hover);
    transform: translateY(-2px);
}

.game-thumb {
    width: 100%;
    height: calc(var(--card-size) * 0.75);
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.game-title {
    margin-top: 8px;
    font-size: calc(var(--font-size) * 0.9);
}

/* ------------------------------------------------------------
   SIDE PANEL SETTINGS
------------------------------------------------------------ */
.side-panel {
    position: fixed;
    top: 0;
    right: -380px;
    width: 360px;
    height: 100%;
    background: var(--panel);
    border-left: 1px solid var(--border);
    box-shadow: -4px 0 12px rgba(0,0,0,0.4);
    padding: 20px;
    transition: right 0.3s ease;
    z-index: 200;
    overflow-y: auto;
}

.side-panel.active {
    right: 0;
}

.side-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 6px 10px;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--text);
}

/* ------------------------------------------------------------
   SETTINGS TABS
------------------------------------------------------------ */
.settings-tabs {
    display: flex;
    gap: 6px;
    margin: 16px 0;
}

.tab-btn {
    flex: 1;
    padding: 8px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--panel);
    cursor: pointer;
    color: var(--text);
}

.tab-btn.active {
    background: var(--accent);
    color: #fff;
}

/* ------------------------------------------------------------
   TAB CONTENT
------------------------------------------------------------ */
.tab-content {
    margin-top: 10px;
}

.tab-content h3 {
    margin-top: 16px;
    margin-bottom: 6px;
}

.tab-content select,
.tab-content input[type="range"],
.tab-content input[type="color"] {
    width: 100%;
    padding: 8px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
}

/* ------------------------------------------------------------
   ADMIN ACTION BUTTONS
------------------------------------------------------------ */
.admin-action {
    width: 100%;
    padding: 10px;
    margin-top: 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--panel);
    cursor: pointer;
    color: var(--text);
}

.admin-action:hover {
    background: var(--hover);
}

/* ------------------------------------------------------------
   LAUNCH PROMPT
------------------------------------------------------------ */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 300;
}

.overlay.active {
    display: flex;
}

.launch-box {
    background: var(--panel);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 320px;
    text-align: center;
}

.launch-thumb {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin: 10px 0;
}

.launch-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
}

.cancel-btn,
.launch-btn {
    flex: 1;
    padding: 10px;
    margin: 0 4px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    cursor: pointer;
}

.launch-btn {
    background: var(--accent);
    color: #fff;
}

/* ------------------------------------------------------------
   FPS COUNTER
------------------------------------------------------------ */
#fpsCounter {
    position: fixed;
    bottom: 12px;
    right: 12px;
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 6px 10px;
    border-radius: var(--radius);
    display: none;
    color: var(--text);
}