/* RADICAL SUDOKU EXTREME - Theme System */

/* Dark Space Theme */
.theme-dark {
    --primary-bg: #000033;
    --secondary-bg: #000022;
    --grid-bg: #000044;
    --cell-bg: #000066;
    --cell-selected: #330066;
    --cell-highlight: #003366;
    --cell-error: #660033;
    --text-color: #ffffff;
    --neon-pink: #ff00ff;
    --neon-blue: #00ffff;
    --neon-green: #00ff00;
    --neon-yellow: #ffff00;
}

/* Light Sunny Theme */
.theme-light {
    --primary-bg: #87CEEB;
    --secondary-bg: #B0E0E6;
    --grid-bg: #4682B4;
    --cell-bg: #ADD8E6;
    --cell-selected: #FFA07A;
    --cell-highlight: #87CEFA;
    --cell-error: #FF6347;
    --text-color: #000033;
    --neon-pink: #FF1493;
    --neon-blue: #1E90FF;
    --neon-green: #32CD32;
    --neon-yellow: #FFD700;
}

body.theme-dark {
    background-color: #000;
    color: var(--text-color);
    background-image: 
        radial-gradient(var(--neon-blue) 1px, transparent 1px),
        radial-gradient(var(--neon-pink) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: 0 0, 25px 25px;
}

body.theme-light {
    background-color: #87CEEB;
    color: var(--text-color);
    background-image: 
        linear-gradient(to bottom, rgba(255,255,255,0.7), rgba(255,255,255,0.3));
}

/* Space Animation Elements */
.stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.star {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    animation: twinkle 5s infinite ease-in-out;
    background: #ffffff;
    box-shadow: 0 0 4px #ffffff, 0 0 8px #ffffff;
}

/* Different colored stars */
.star.silver {
    background: #E8E8E8;
    box-shadow: 0 0 4px #E8E8E8, 0 0 8px #E8E8E8;
}

.star.gold {
    background: #FFD700;
    box-shadow: 0 0 4px #FFD700, 0 0 8px #FFD700;
}

.star.light-blue {
    background: #ADD8E6;
    box-shadow: 0 0 4px #ADD8E6, 0 0 8px #ADD8E6;
}

/* Star shape for some stars */
.star.star-shape {
    clip-path: polygon(
        50% 0%, 
        61% 35%, 
        98% 35%, 
        68% 57%, 
        79% 91%, 
        50% 70%, 
        21% 91%, 
        32% 57%, 
        2% 35%, 
        39% 35%
    );
    border-radius: 0;
    box-shadow: 0 0 10px currentColor, 0 0 20px currentColor;
    animation: twinkle-rotate 5s infinite ease-in-out;
    width: 12px !important;
    height: 12px !important;
}

.star::after {
    content: '';
    position: absolute;
    top: -100%;
    left: -100%;
    width: 300%;
    height: 300%;
    background-image: 
        radial-gradient(#ffffff 1%, transparent 10%),
        radial-gradient(#ffffff 1%, transparent 10%);
    background-size: 4px 4px;
    background-position: 0 0, 2px 2px;
    opacity: 0.3;
}

.shooting-star {
    position: absolute;
    width: 6px;
    height: 6px;
    background: #FFD700; /* Golden color */
    border-radius: 50%;
    opacity: 0;
    z-index: 2;
    box-shadow: 0 0 10px #FFD700, 0 0 20px #FFD700;
    animation: shoot 6s linear infinite;
    transform: rotate(30deg); /* Tilted angle */
}

.shooting-star::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 2px;
    background: linear-gradient(to left, rgba(255,215,0,0.8), rgba(255,215,0,0)); /* Golden gradient */
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index: 1;
}

/* Sunny Animation Elements */
.sun {
    position: fixed;
    top: 40px;
    right: 40px;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, #FFFF00, #FFA500);
    border-radius: 50%;
    box-shadow: 0 0 60px #FFD700, 0 0 100px #FFA500;
    animation: pulse-sun 4s infinite alternate;
    z-index: 10; /* Lower z-index so it doesn't interfere with UI */
    pointer-events: none;
    opacity: 0.9;
}

.sun::after {
    content: '';
    position: absolute;
    top: -30px;
    left: -30px;
    right: -30px;
    bottom: -30px;
    background: radial-gradient(circle, rgba(255,255,0,0.3), rgba(255,165,0,0) 70%);
    border-radius: 50%;
    animation: sun-rays 8s infinite linear;
}

.cloud {
    position: fixed;
    top: 120px; /* Position clouds below the sun */
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    z-index: -10; /* Lower than sun, higher than background */
    pointer-events: none;
    animation: float-cloud linear infinite;
    filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.1));
}

/* Horizontal cloud parts instead of vertical */
.cloud::before, .cloud::after {
    content: '';
    position: absolute;
    background: rgba(255, 255, 255, 1);
    border-radius: 50%;
}

.cloud::before {
    width: 60%;
    height: 100%;
    top: 0;
    left: -30%;
}

.cloud::after {
    width: 60%;
    height: 100%;
    top: 0;
    right: -30%;
}

.leaf {
    position: fixed;
    top: 180px; /* Start leaves from below clouds */
    width: 25px;
    height: 25px;
    z-index: -1;
    pointer-events: none;
    animation: falling-leaf 15s linear infinite;
    opacity: 0.8;
}

.leaf-1 {
    background-color: #32CD32;
    border-radius: 0 50% 50% 50%;
    transform: rotate(45deg);
}

.leaf-2 {
    background-color: #228B22;
    border-radius: 50% 0 50% 50%;
    transform: rotate(135deg);
}

.leaf-3 {
    background-color: #3CB371;
    border-radius: 50% 50% 0 50%;
    transform: rotate(225deg);
}

.leaf-4 {
    background-color: #6B8E23;
    border-radius: 50% 50% 50% 0;
    transform: rotate(315deg);
}

.leaf-5 {
    background-color: #556B2F;
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    transform: rotate(45deg);
}

/* Animations */
@keyframes twinkle {
    0% { 
        opacity: 0; 
        transform: scale(0.8);
    }
    50% { 
        opacity: 1; 
        transform: scale(1.2);
    }
    100% { 
        opacity: 0; 
        transform: scale(0.8);
    }
}

@keyframes twinkle-rotate {
    0% { 
        opacity: 0; 
        transform: scale(0.8) rotate(0deg);
    }
    50% { 
        opacity: 1; 
        transform: scale(1.5) rotate(180deg);
    }
    100% { 
        opacity: 0; 
        transform: scale(0.8) rotate(360deg);
    }
}

@keyframes shoot {
    0% {
        opacity: 0;
        transform: translateX(0) translateY(0);
    }
    5% {
        opacity: 1;
    }
    80% {
        opacity: 0.8;
        transform: translateX(400px) translateY(400px);
    }
    100% {
        opacity: 0;
        transform: translateX(600px) translateY(600px);
    }
}

@keyframes pulse-sun {
    0% { 
        box-shadow: 0 0 60px #FFD700, 0 0 100px #FFA500; 
        transform: scale(1);
    }
    100% { 
        box-shadow: 0 0 80px #FFD700, 0 0 120px #FFA500; 
        transform: scale(1.05);
    }
}

@keyframes sun-rays {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes float-cloud {
    0% { transform: translateX(-150px); }
    100% { transform: translateX(calc(100vw + 150px)); }
}

@keyframes falling-leaf {
    0% {
        transform: translateY(-50px) translateX(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(calc(100vh + 50px)) translateX(200px) rotate(720deg);
        opacity: 0;
    }
}

/* Level Indicators */
.level-indicator {
    display: flex;
    justify-content: center;
    margin-bottom: 10px;
}

.level-star {
    font-size: 1.2rem;
    color: var(--neon-yellow);
    margin: 0 2px;
    text-shadow: 0 0 5px var(--neon-yellow);
}

.level-star.empty {
    color: rgba(255, 255, 255, 0.3);
    text-shadow: none;
}
/* Enhanced Light Theme Background */
body.theme-light {
    background: linear-gradient(to bottom, #87CEEB, #B0E0E6);
    position: relative;
    overflow: hidden;
}

body.theme-light::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0) 50%),
        radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0) 50%);
    z-index: -2;
    pointer-events: none;
}

/* Grass at the bottom */
body.theme-light::after {
    content: '';
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: linear-gradient(to top, #32CD32, rgba(50, 205, 50, 0));
    z-index: -1;
    pointer-events: none;
}
/* Enhanced Light Theme Background */
body.theme-light {
    background: linear-gradient(to bottom, #87CEEB, #B0E0E6);
    position: relative;
    overflow: hidden;
}

body.theme-light::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0) 50%),
        radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0) 50%);
    z-index: -3;
    pointer-events: none;
}

/* Adjust content padding to account for fixed footer */
.game-container {
    padding-bottom: 60px;
}

/* Make sure the game board is fully visible */
.game-board-container {
    margin-bottom: 30px;
}
/* Scrollbar styling for light mode */
body.theme-light::-webkit-scrollbar {
    width: 12px;
}

body.theme-light::-webkit-scrollbar-track {
    background: rgba(176, 224, 230, 0.5);
    border-radius: 10px;
}

body.theme-light::-webkit-scrollbar-thumb {
    background: #4682B4;
    border-radius: 10px;
    border: 3px solid rgba(176, 224, 230, 0.5);
}

body.theme-light::-webkit-scrollbar-thumb:hover {
    background: #1E90FF;
}