style.css

/* --- CSS Variables (Theme Definitions) --- */
:root {
    --board-bg: #f0f0f0;
    --cell-border: #ccc;
    --player1-color: #4CAF50; /* Green */
    --player1-light: #a5d6a7;
    --player1-gloss: #c8e6c9;
    --player2-color: #F44336; /* Red */
    --player2-light: #ef9a9a;
    --player2-gloss: #ffcdd2;
    --empty-cell-bg: #ffffff;
    --text-color: #333; /* Default text color (Dark for light theme) */
    --text-light: #555;
    --accent-color: #007bff;
    --accent-dark: #0056b3;
    --body-bg: #e9e9e9;
    --popup-bg: rgba(255, 255, 255, 0.95);
    --popup-shadow: rgba(0, 0, 0, 0.2);
    --button-text: #fff;
    --dominance-bg: #e0e0e0;
    --font-stack: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    /* --cell-size will be set by JS */
    --cell-size: 50px; /* Default/fallback size */
    /* Orb count text color variables */
    --orb-text-light-mode: #222; /* Dark text for light mode */
    --orb-text-shadow-light-mode: 1px 1px 1px rgba(255,255,255,0.5); /* Lighter shadow */
    --orb-text-dark-mode: rgba(255, 255, 255, 0.9); /* Whiteish text for dark mode */
    --orb-text-shadow-dark-mode: 1px 1px 2px rgba(0,0,0,0.8); /* Darker shadow */

}

/* --- Dark Theme --- */
body.dark-theme {
    --board-bg: #2c2c2c;
    --cell-border: #555;
    --player1-color: #66bb6a;
    --player1-light: #4a5c4b;
    --player1-gloss: #a5d6a7;
    --player2-color: #ef5350;
    --player2-light: #614444;
    --player2-gloss: #ef9a9a;
    --empty-cell-bg: #424242;
    --text-color: #e0e0e0; /* Light text for dark theme */
    --text-light: #bdbdbd;
    --accent-color: #4dabf5;
    --accent-dark: #007bff;
    --body-bg: #1f1f1f;
    --popup-bg: rgba(40, 40, 40, 0.95);
    --popup-shadow: rgba(0, 0, 0, 0.5);
    --button-text: #fff;
    --dominance-bg: #555;
}

/* --- Global Styles --- */
* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
    height: 100%;
}

body {
    font-family: var(--font-stack);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100%;
    background-color: var(--body-bg);
    color: var(--text-color);
    margin: 0;
    padding: 10px;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

h1 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--text-color);
    font-size: 1.8em;
    text-align: center; /* Center H1 text globally */
}
h2 {
     margin-top: 0;
     margin-bottom: 10px;
     font-size: 1.2em;
     text-align: center; /* Center H2 text globally */

}


/* --- Theme Toggle Button --- */
.theme-toggle {
    position: fixed;
    top: 10px;
    right: 10px;
    background: var(--empty-cell-bg);
    color: var(--text-color);
    border: 1px solid var(--cell-border);
    border-radius: 50%;
    width: 35px;
    height: 35px;
    font-size: 1.2em;
    cursor: pointer;
    z-index: 1001;
    box-shadow: 0 1px 4px rgba(0,0,0,0.15);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.1s ease, border-color 0.3s ease;
    line-height: 35px;
    text-align: center;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}
.theme-toggle:hover { background-color: var(--board-bg); }
.theme-toggle:active { transform: scale(0.95); }


/* --- Setup Screen Styles --- */
.setup-screen {
    background-color: var(--board-bg);
    padding: 20px 25px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
    display: block; /* Keep as block */
    text-align: center; /* Center inline/inline-block/text children */
    transition: background-color 0.3s ease;
    margin: auto; /* Center the block itself */
}
.setup-options {
    margin-bottom: 20px;
    width: 100%;
    text-align: center; /* Center H2 and difficulty buttons container */
}


/* General Button Styling */
.setup-button, .start-button, .reset-button {
    padding: 10px 18px;
    font-size: 0.95em;
    font-weight: bold;
    color: var(--button-text);
    background-color: var(--accent-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
    margin: 5px;
    -webkit-tap-highlight-color: transparent;
    display: inline-block; /* Ensure buttons flow correctly */
    vertical-align: middle;
}
.setup-button:hover, .start-button:hover, .reset-button:hover { background-color: var(--accent-dark); }
.setup-button:active, .start-button:active, .reset-button:active { transform: scale(0.98); }

/* Specific Button Overrides */
.start-button {
    background-color: var(--player1-color);
    /* margin-top is handled by the wrapper now */
    /* align-self: center; Removed */
    /* No specific display needed, uses general button rule */
}
.start-button:hover { background-color: #388E3C; }
body.dark-theme .start-button { background-color: var(--player1-color); }
body.dark-theme .start-button:hover { background-color: #81c784; }

/* *** Style the new wrapper *** */
.start-button-wrapper {
    margin-top: 15px; /* Add space above the wrapper */
    /* The wrapper itself is centered by text-align:center on .setup-screen */
    /* No explicit width needed, it will shrink-wrap the button */
    display: block; /* Make sure it takes up its own line if needed */
}


.difficulty-buttons {
    display: flex; /* Keep flex here for the row layout */
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}
.difficulty-button.selected { background-color: var(--accent-dark); box-shadow: inset 0 0 5px rgba(0,0,0,0.3); }


/* --- Game Container & Elements --- */
.game-container {
    background-color: var(--board-bg);
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: background-color 0.3s ease;
    width: 100%;
    max-width: 95vmin;
    max-height: 95vh;
    display: flex;
    flex-direction: column;
    margin: auto;
}

/* --- Dominance Bar Styling --- */
.dominance-bar-container {
    padding: 0 5px;
    margin-bottom: 12px;
    width: 100%;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}
.dominance-bar {
    display: flex; height: 8px;
    background-color: var(--dominance-bg);
    border-radius: 4px; overflow: hidden; box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}
.dominance-fill { height: 100%; transition: width 0.5s ease-out; width: 50%; }
.dominance-fill.p1 { background-color: var(--player1-color); border-radius: 4px 0 0 4px; }
.dominance-fill.p2 { background-color: var(--player2-color); border-radius: 0 4px 4px 0; }
.dominance-fill.p1:only-child, .dominance-fill.p2:only-child { border-radius: 4px; }
.dominance-fill.p1:last-child:not(:first-child) { border-radius: 0 4px 4px 0;}
.dominance-fill.p2:first-child:not(:last-child) { border-radius: 4px 0 0 4px;}


/* --- Status Bar & Player Info --- */
.status-bar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px; background-color: var(--empty-cell-bg);
    border-radius: 5px; transition: background-color 0.3s ease;
    width: 100%;
    max-width: 500px;
    font-size: 0.9em;
    margin: 0 auto 12px auto; /* top, auto, bottom, auto */
}
.player-info {
    padding: 4px 10px;
    border-radius: 15px; font-weight: bold;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    border: 2px solid transparent;
    white-space: nowrap;
}
.player-info.player1 { background-color: var(--player1-light); color: var(--player1-color); }
.player-info.player2 { background-color: var(--player2-light); color: var(--player2-color); }
.player-info.active { border-color: var(--text-color); }
.orb-count { display: inline-block; margin-left: 5px; background-color: rgba(0,0,0,0.1); padding: 1px 5px; border-radius: 4px; font-size: 0.9em; }
.status-message { font-weight: bold; flex-grow: 1; text-align: center; padding: 0 8px; color: var(--text-light); transition: color 0.3s ease; }

/* --- Game Board & Cells --- */
.board-outer-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
    overflow: hidden;
}
.board-container {
    display: inline-block;
    border: 1px solid var(--cell-border);
    transition: border-color 0.3s ease;
    line-height: 0;
}
.game-board {
    display: grid;
    background-color: var(--board-bg);
    transition: background-color 0.3s ease;
}
.cell {
    width: var(--cell-size); height: var(--cell-size);
    background-color: var(--empty-cell-bg);
    border: 1px solid var(--cell-border);
    position: relative; cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.3s ease;
    overflow: visible;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-tap-highlight-color: rgba(0,0,0,0.1);
}
.cell:hover:not(.game-over):not(.ai-thinking) { background-color: var(--cell-border); }

.game-board.game-over .cell,
.game-board.ai-thinking .cell {
    cursor: not-allowed;
    opacity: 0.8;
}
.game-board.game-over .cell.p1,
.game-board.game-over .cell.p2 {
    opacity: 0.9;
}


/* --- Orb Styles (Multiple Visual Orbs) --- */
.orb {
    border-radius: 50%;
    position: absolute;
    transition: transform 0.15s ease-out, background 0.2s ease;
    background: var(--empty-cell-bg);
    box-shadow: inset 0 -2px 3px rgba(0,0,0,0.2), 0 2px 3px rgba(0,0,0,0.25);
    transform-origin: center center;
}
.orb.p1 { background: radial-gradient(circle at 35% 35%, var(--player1-gloss), var(--player1-color) 70%); }
.orb.p2 { background: radial-gradient(circle at 35% 35%, var(--player2-gloss), var(--player2-color) 70%); }

/* Positioning for Multiple Visual Orbs */
.cell .orb:nth-child(1):is(.orb-visual-count-1) { width: 65%; height: 65%; top: 17.5%; left: 17.5%; }
.cell .orb:is(.orb-visual-count-2) { width: 50%; height: 50%; }
.cell .orb:nth-child(1):is(.orb-visual-count-2) { top: 15%; left: 15%; }
.cell .orb:nth-child(2):is(.orb-visual-count-2) { top: 35%; left: 35%; }
.cell .orb:is(.orb-visual-count-3) { width: 45%; height: 45%; }
.cell .orb:nth-child(1):is(.orb-visual-count-3) { top: 12%; left: 27.5%; }
.cell .orb:nth-child(2):is(.orb-visual-count-3) { top: 43%; left: 10%; }
.cell .orb:nth-child(3):is(.orb-visual-count-3) { top: 43%; left: 45%; }

/* Orb count text - Bottom Right */
.orb-count-text {
    position: absolute;
    bottom: 2px;
    right: 4px;
    font-size: calc(max(8px, var(--cell-size) * 0.28));
    font-weight: bold;
    color: var(--orb-text-light-mode);
    text-shadow: var(--orb-text-shadow-light-mode);
    pointer-events: none;
    line-height: 1;
    z-index: 2;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}
/* Dark theme override for orb count text */
body.dark-theme .orb-count-text {
    color: var(--orb-text-dark-mode);
    text-shadow: var(--orb-text-shadow-dark-mode);
}


/* --- Orb Animations --- */
@keyframes orb-appear {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.15); opacity: 1; }
  80% { transform: scale(0.98); }
  100% { transform: scale(1); opacity: 1; }
}


/* --- Win Popup Styles --- */
.win-popup-overlay {
    position: fixed; inset: 0; background-color: rgba(0, 0, 0, 0.5);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000; opacity: 0;
    transition: opacity 0.3s ease, backdrop-filter 0.3s ease;
    pointer-events: none;
    padding: 15px;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}
.win-popup-overlay.visible {
    opacity: 1; pointer-events: auto;
}
.win-popup-content {
    background-color: var(--popup-bg); color: var(--text-color);
    padding: 25px 30px; border-radius: 8px; text-align: center;
    box-shadow: 0 5px 20px var(--popup-shadow); transform: scale(0.9);
    transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
    max-width: 90%;
}
.win-popup-overlay.visible .win-popup-content { transform: scale(1); }
.win-popup-content h2 { margin-top: 0; margin-bottom: 20px; color: var(--text-color); font-size: 1.4em; }


/* --- Media Queries for Responsiveness --- */
@media (max-width: 600px) {
    body { padding: 5px; }
    h1 { font-size: 1.5em; margin-bottom: 10px; }
    .setup-screen { padding: 15px 20px; }
    .game-container { padding: 10px; max-width: 100%; }
    .status-bar { padding: 6px; font-size: 0.8em; }
    .player-info { padding: 3px 8px; }
    .orb-count { margin-left: 4px; padding: 1px 4px; }
    .reset-button { padding: 8px 15px; font-size: 0.9em; }
    .win-popup-content { padding: 20px 25px; }
    .win-popup-content h2 { font-size: 1.2em; }
    .theme-toggle { width: 32px; height: 32px; font-size: 1.1em; line-height: 32px; top: 8px; right: 8px; }
}

@media (max-width: 360px) {
     h1 { font-size: 1.3em; }
     .status-bar { font-size: 0.75em; }
     .setup-button, .start-button, .reset-button { font-size: 0.85em; padding: 8px 12px; margin: 3px;}
     .difficulty-buttons { gap: 5px; }
     .orb-count-text { font-size: calc(max(7px, var(--cell-size) * 0.26)); }
}