:root {
    --red: linear-gradient(145deg, #ff4b5c, #d63031);
    --green: linear-gradient(145deg, #20bf6b, #10ac84);
    --yellow: linear-gradient(145deg, #f7b731, #f39c12);
    --blue: linear-gradient(145deg, #45aaf2, #2d98da);
    
    --red-glow: 0 0 25px rgba(214, 48, 49, 0.7);
    --green-glow: 0 0 25px rgba(16, 172, 132, 0.7);
    --yellow-glow: 0 0 25px rgba(243, 156, 18, 0.7);
    --blue-glow: 0 0 25px rgba(45, 152, 218, 0.7);

    --bg-main: radial-gradient(circle at center, #1e272e, #0f141a);
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --cell-size: min(6.5vw, 6.5vh, 50px);
    --ease-in-out-expo: cubic-bezier(1, 0, 0, 1);
    --ease-out-back: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-main);
    color: #fff;
    height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#game-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px;
    perspective: 1000px;
}

/* Premium Overlays */
.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.6s var(--ease-in-out-expo);
}

.overlay.hidden {
    opacity: 0;
    visibility: hidden;
    transform: scale(1.1) rotateX(10deg);
}

.menu-content {
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
    padding: 50px;
    border-radius: 40px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 30px 60px rgba(0,0,0,0.6);
    text-align: center;
    width: 90%;
    max-width: 440px;
}

/* Premium Logo Redesign v2 */
.premium-logo-v2 {
    font-size: clamp(2.2rem, 8vw, 3rem);
    line-height: 0.9;
    font-weight: 900;
    margin-bottom: 40px;
    background: linear-gradient(to bottom, #fff 30%, #f7b731 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
    letter-spacing: 3px;
    filter: drop-shadow(0 4px 0 #b33939) drop-shadow(0 8px 15px rgba(0,0,0,0.4));
    transform: perspective(1000px) rotateX(10deg);
}

.premium-logo-v2 .king {
    font-size: 0.7em;
    background: linear-gradient(to bottom, #f7b731 30%, #ff4b5c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 8px;
    display: block;
    margin-top: 5px;
}

/* Start Menu Premium Layout */
.premium-start {
    max-width: 460px;
    padding: 60px 40px;
    border-radius: 50px;
    background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(0,0,0,0.1));
}

.main-actions {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.mode-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.primary-glow {
    background: linear-gradient(135deg, #ff4b5c, #d63031) !important;
    font-size: 1.5rem !important;
    padding: 22px !important;
    box-shadow: 0 0 25px rgba(214, 48, 49, 0.4), 0 10px 0 #8e0000 !important;
    border: none !important;
}

.primary-glow:active { transform: translateY(6px) !important; box-shadow: 0 0 10px rgba(214, 48, 49, 0.4), 0 4px 0 #8e0000 !important; }

.secondary-3d {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--glass-border) !important;
    font-size: 1.1rem !important;
    padding: 15px !important;
    box-shadow: 0 6px 0 rgba(0,0,0,0.3) !important;
}

.secondary-3d:hover { background: rgba(255, 255, 255, 0.1) !important; }
.secondary-3d:active { transform: translateY(4px) !important; box-shadow: 0 2px 0 rgba(0,0,0,0.3) !important; }

/* Icon Row */
.sub-actions {
    margin-top: 20px;
}

.action-row {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.icon-menu-btn {
    width: 55px;
    height: 55px;
    border-radius: 18px;
    border: 1px solid var(--glass-border);
    background: var(--glass);
    font-size: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: 0.3s var(--ease-out-back);
}

.icon-menu-btn:hover { background: rgba(255,255,255,0.15); transform: translateY(-5px); }
.icon-menu-btn.danger { background: rgba(235, 77, 75, 0.1); border-color: rgba(235, 77, 75, 0.3); color: #ff7979; }

.app-version {
    margin-top: 30px;
    font-size: 0.9rem;
    opacity: 0.5;
    letter-spacing: 1px;
}

/* Base and Board Polish */
.menu-content h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 35px;
    background: linear-gradient(to right, #ff4b5c, #f7b731, #20bf6b, #45aaf2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
    letter-spacing: 4px;
    filter: drop-shadow(0 5px 15px rgba(0,0,0,0.3));
}

.menu-btn {
    width: 100%;
    padding: 20px;
    margin: 15px 0;
    border: none;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1.3rem;
    font-weight: 800;
    cursor: pointer;
    transition: 0.4s var(--ease-out-back);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.menu-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

/* Turn Indicator */
.turn-indicator {
    background: var(--glass);
    padding: 15px 40px;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
}

.turn-indicator .dot {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    margin-right: 20px;
    transition: 0.6s var(--ease-out-back);
}

/* Header Controls */
#game-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    z-index: 1500;
}

.menu-icon-btn {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 1.5rem;
    padding: 10px 15px;
    border-radius: 15px;
    cursor: pointer;
    transition: 0.3s;
    backdrop-filter: blur(10px);
}

.menu-icon-btn:hover { background: rgba(255,255,255,0.15); transform: scale(1.1); }

.icon-btn {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    font-size: 1.5rem;
    padding: 10px;
    border-radius: 15px;
    cursor: pointer;
    transition: 0.3s;
    backdrop-filter: blur(10px);
}

.icon-btn:hover { background: rgba(255,255,255,0.15); transform: scale(1.1); }

/* Premium Menu & Popups */
.premium-menu h2 {
    font-size: 2.2rem;
    margin-bottom: 30px;
    color: #f7b731;
    letter-spacing: 2px;
    font-weight: 800;
}

.menu-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.menu-btn.secondary { background: rgba(255, 255, 255, 0.08); }
.menu-btn.danger { background: linear-gradient(135deg, #eb4d4b, #ff7979); }

.confirm-overlay { z-index: 3000; background: rgba(0,0,0,0.94); }
.popup-content { padding: 40px; max-width: 320px; border-radius: 30px; }
.popup-content p { font-size: 1.2rem; margin-bottom: 25px; font-weight: 600; line-height: 1.4; }
.popup-btns { display: flex; gap: 15px; }

/* Mobile Adjustments */
@media (max-width: 450px) {
    #game-header { padding: 10px 15px; }
    .menu-icon-btn, .icon-btn { padding: 8px 12px; font-size: 1.2rem; }
    .turn-indicator { padding: 10px 20px; margin-bottom: 10px; }
    .turn-indicator .dot { width: 14px; height: 14px; margin-right: 12px; }
}

/* Board UI */
#board-wrapper {
    position: relative;
    padding: 15px;
    border-radius: 30px;
    background: rgba(0,0,0,0.4);
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    transform: rotateX(5deg);
    transition: transform 0.5s ease;
}

/* Board UI Polish - High Visibility & Classic Colors */
#ludo-board {
    display: grid;
    grid-template-columns: repeat(15, var(--cell-size));
    grid-template-rows: repeat(15, var(--cell-size));
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    border: 10px solid #2f3542;
}

.cell {
    border: 1px solid #333; /* Clear black borders */
    background-color: #ffffff;
    position: relative;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.05);
}

/* Vibrant Player Paths */
.cell.red-path { background: #ff4d4d !important; border-color: #900; }
.cell.green-path { background: #2ecc71 !important; border-color: #060; }
.cell.yellow-path { background: #f1c40f !important; border-color: #980; }
.cell.blue-path { background: #3498db !important; border-color: #006; }

/* Special Start Cell Styling */
.cell.start-cell {
    border-width: 3px;
    box-shadow: inset 0 0 15px rgba(255,255,255,0.4);
}

/* Base Tinting */
.base.red .base-inner { background: rgba(255, 77, 77, 0.1); }
.base.green .base-inner { background: rgba(46, 204, 113, 0.1); }
.base.yellow .base-inner { background: rgba(241, 196, 15, 0.1); }
.base.blue .base-inner { background: rgba(52, 152, 219, 0.1); }

/* Player Base Areas - Restoring Colors & Grid Positions */
.base {
    grid-column: span 6;
    grid-row: span 6;
    position: relative;
    padding: 12%;
    border: 2px solid #333;
    box-shadow: inset 0 0 40px rgba(0,0,0,0.1);
}

.base.red { background: var(--red); grid-area: 1 / 1 / 7 / 7; }
.base.green { background: var(--green); grid-area: 1 / 10 / 7 / 16; }
.base.blue { background: var(--blue); grid-area: 10 / 1 / 16 / 7; }
.base.yellow { background: var(--yellow); grid-area: 10 / 10 / 16 / 16; }

/* Base Inner Tinting */
.base.red .base-inner { background: rgba(255, 255, 255, 0.9); }
.base.green .base-inner { background: rgba(255, 255, 255, 0.9); }
.base.yellow .base-inner { background: rgba(255, 255, 255, 0.9); }
.base.blue .base-inner { background: rgba(255, 255, 255, 0.9); }

.base-inner {
    width: 100%;
    height: 100%;
    border-radius: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    padding: 12%;
    gap: 15%;
    border: 3px solid rgba(0,0,0,0.2);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.1);
}

.token-slot {
    border-radius: 50%;
    background: #fff;
    border: 2px solid #ccc;
    box-shadow: inset 0 3px 6px rgba(0,0,0,0.1);
}

/* Home Triangles */
.home-center {
    grid-area: 7 / 7 / 10 / 10;
    border: 2px solid #333;
    background: #fff;
}

.home-triangle {
    position: absolute;
    width: 0;
    height: 0;
    border-style: solid;
    filter: drop-shadow(0 0 10px rgba(0,0,0,0.1));
}

.home-triangle.red {
    border-width: calc(var(--cell-size) * 1.5) 0 calc(var(--cell-size) * 1.5) calc(var(--cell-size) * 1.5);
    border-color: transparent transparent transparent #ff4b5c;
}
.home-triangle.green {
    border-width: 0 calc(var(--cell-size) * 1.5) calc(var(--cell-size) * 1.5) calc(var(--cell-size) * 1.5);
    border-color: transparent transparent #20bf6b transparent;
}
.home-triangle.yellow {
    border-width: calc(var(--cell-size) * 1.5) calc(var(--cell-size) * 1.5) calc(var(--cell-size) * 1.5) 0;
    border-color: transparent #f7b731 transparent transparent;
}
.home-triangle.blue {
    border-width: calc(var(--cell-size) * 1.5) calc(var(--cell-size) * 1.5) 0 calc(var(--cell-size) * 1.5);
    border-color: #45aaf2 transparent transparent transparent;
}

/* Path Cells */
.cell {
    border: 0.1px solid rgba(0,0,0,0.03);
    transition: background 0.3s ease;
}

.cell.safe {
    background-color: #f1f2f6;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black' stroke='white' stroke-width='1.5'%3E%3Cpath d='M12 17.27L18.18 21l-1.64-7.03L22 9.24l-7.19-.61L12 2 9.19 8.63 2 9.24l5.46 4.73L5.82 21z'/%3E%3C/svg%3E");
    background-size: 85%;
    background-repeat: no-repeat;
    background-position: center;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.1);
    animation: star-glow 2s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
    z-index: 5;
    position: relative;
    border-radius: 4px;
}

@keyframes star-glow {
    0% { filter: drop-shadow(0 0 2px rgba(0,0,0,0.4)); transform: scale(1); }
    100% { filter: drop-shadow(0 0 10px rgba(0,0,0,0.7)); transform: scale(1.08); }
}

/* Enhanced Token Styling - Clear Visibility */
.token {
    position: absolute;
    width: calc(var(--cell-size) * 0.82);
    height: calc(var(--cell-size) * 0.82);
    border-radius: 50%;
    border: 3px solid #ffffff; /* High contrast white border */
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.6), inset 0 0 12px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.4s var(--ease-out-back);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    filter: drop-shadow(0 0 2px rgba(0,0,0,0.5));
}

.token::after {
    content: '';
    width: 55%;
    height: 55%;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    box-shadow: inset 0 0 8px rgba(255, 255, 255, 0.5);
}

/* Restoring Player Colors with Improved Gradients */
.token.red { background: linear-gradient(135deg, #ff4d4d 20%, #8e0000 90%); }
.token.green { background: linear-gradient(135deg, #2ecc71 20%, #0e622e 90%); }
.token.yellow { background: linear-gradient(135deg, #f1c40f 20%, #a18206 90%); }
.token.blue { background: linear-gradient(135deg, #3498db 20%, #154c72 90%); }
.token.black { background: linear-gradient(135deg, #333333 20%, #000000 90%); }

/* Highlighting Active Tokens with Dynamic Glow */
.token.active {
    animation: premium-pulse 0.8s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
    z-index: 200;
    border: 4px solid #ffffff !important;
    box-shadow: 0 0 30px #ffffff, 0 10px 20px rgba(0,0,0,0.6) !important;
}

/* High Contrast Dice Dots */
.face::before {
    content: '';
    width: 80%;
    height: 80%;
    background-size: 30% 30%;
    background-repeat: no-repeat;
    display: block;
    filter: drop-shadow(0 1px 1px rgba(255,255,255,0.8)); /* White glow for dark dots */
}

.face {
    background: #ffffff;
    border: 2px solid #ddd;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.1), 0 5px 10px rgba(0,0,0,0.2);
}

@keyframes premium-pulse {
    from { transform: scale(1) translateY(0); filter: brightness(1); }
    to { transform: scale(1.2) translateY(-10px); filter: brightness(1.2); }
}

/* Dynamic Dice Container */
#game-footer {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1000;
}

#dice-container {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    pointer-events: auto;
    transition: all 0.6s var(--ease-out-back);
    transform: translate(-50%, -50%);
    filter: drop-shadow(0 10px 20px rgba(0,0,0,0.4));
}

/* Positioning anchors for all 4 players */
#dice-container.pos-red { top: 35%; left: 35%; }
#dice-container.pos-green { top: 35%; left: 65%; }
#dice-container.pos-yellow { top: 65%; left: 65%; }
#dice-container.pos-blue { top: 65%; left: 35%; }

.roll-btn {
    padding: 10px 25px;
    border: none;
    border-radius: 20px;
    background: #fff;
    color: #1e272e;
    font-weight: 800;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 6px 0 #b2bec3;
    transition: all 0.1s;
    text-transform: uppercase;
}

/* Highlight current active base */
.base.active {
    box-shadow: inset 0 0 40px rgba(255,255,255,0.4);
    animation: base-glow 1.5s infinite alternate;
}

@keyframes base-glow {
    from { filter: brightness(1); }
    to { filter: brightness(1.2); }
}

#dice-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

#dice-result-badge {
    position: absolute;
    top: -30px;
    right: -30px;
    background: linear-gradient(135deg, #fff, #ddd);
    color: #1e272e;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 900;
    font-size: 1.5rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.4), 0 0 15px rgba(255,255,255,0.5);
    border: 3px solid #1e272e;
    z-index: 500;
    transition: all 0.4s var(--ease-out-back);
    transform-origin: center;
}

#dice-result-badge.hidden {
    transform: scale(0);
    opacity: 0;
}

.face {
    position: absolute;
    width: 100%;
    height: 100%;
    background: #fff;
    border: 2px solid #eee;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.1);
}

/* Standardized 3D Cube Faces */
.face.front  { transform: rotateY(0deg) translateZ(30px); }
.face.back   { transform: rotateY(180deg) translateZ(30px); }
.face.top    { transform: rotateX(90deg) translateZ(30px); }
.face.bottom { transform: rotateX(-90deg) translateZ(30px); }
.face.left   { transform: rotateY(-90deg) translateZ(30px); }
.face.right  { transform: rotateY(90deg) translateZ(30px); }

/* Face Dots - Accurate Mapping */
.face.front::before { background-image: radial-gradient(#333 15%, transparent 20%); background-position: 50% 50%; } /* 1 */
.face.top::before { background-image: radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%); background-position: 10% 10%, 90% 90%; } /* 2 */
.face.right::before { background-image: radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%); background-position: 10% 10%, 50% 50%, 90% 90%; } /* 3 */
.face.left::before { background-image: radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%); background-position: 10% 10%, 10% 90%, 90% 10%, 90% 90%; } /* 4 */
.face.bottom::before { background-image: radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%); background-position: 10% 10%, 10% 90%, 90% 10%, 90% 90%, 50% 50%; } /* 5 */
.face.back::before { background-image: radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%), radial-gradient(#333 15%, transparent 20%); background-position: 10% 10%, 10% 50%, 10% 90%, 90% 10%, 90% 50%, 90% 90%; } /* 6 */

/* Particle Effects Container */
#particles-container {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 3000;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: particle-fade 1s forwards ease-out;
}

@keyframes particle-fade {
    to { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

/* Mobile Adjustments */
@media (max-width: 600px) {
    #game-footer { gap: 25px; }
    .roll-btn { padding: 15px 35px; font-size: 1.2rem; }
    #dice { width: 60px; height: 60px; }
}