:root {
    --primary: #f29c1f;
    --primary-dark: #d68112;
    --text-main: #5c3a21;
    --bg-overlay: rgba(0, 0, 0, 0.4);
    --wheel-bg: rgba(255, 255, 255, 0.15);
    --cell-bg: rgba(255, 255, 255, 0.9);
    --cell-border: #e6b885;
    --cell-found: #f29c1f;
    --cell-found-text: #fff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

body {
    font-family: 'Nunito', sans-serif;
    overflow: hidden;
    background-color: #333;
    color: white;
}

/* Background Layer */
#bg-layer {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background-image: url('../assets/images/bg1.png');
    background-size: cover;
    background-position: center;
    transition: background-image 1s ease-in-out;
    z-index: -1;
    filter: brightness(0.85);
}

/* Overlays & Modals */
.overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg-overlay);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: linear-gradient(145deg, #fff9f0, #ffe6cc);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    color: var(--text-main);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    width: 90%;
    max-width: 400px;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.overlay.active .modal {
    transform: scale(1);
}

.modal-thumbnail {
    width: 100%;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.modal h1, .modal h2 {
    font-size: 28px;
    margin-bottom: 10px;
    text-shadow: 1px 1px 2px rgba(255,255,255,0.8);
}

.modal p {
    font-size: 16px;
    margin-bottom: 20px;
    color: #7a5c43;
}

.btn-primary {
    background: linear-gradient(to bottom, #ffbe3b, #f29c1f);
    color: white;
    font-size: 20px;
    font-weight: 900;
    border: none;
    padding: 15px 30px;
    border-radius: 30px;
    cursor: pointer;
    box-shadow: 0 6px 0 var(--primary-dark), 0 10px 10px rgba(0,0,0,0.2);
    transition: transform 0.1s, box-shadow 0.1s;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:active {
    transform: translateY(6px);
    box-shadow: 0 0px 0 var(--primary-dark), 0 4px 4px rgba(0,0,0,0.2);
}

/* Main Game UI */
#game-ui {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    z-index: 10;
}

.level-indicator {
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(5px);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 18px;
    font-weight: 900;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.coin-container {
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(5px);
    padding: 8px 15px 8px 10px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 18px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.coin-icon {
    font-size: 20px;
    margin-right: 5px;
    animation: bounce 2s infinite;
}

.icon-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    width: 40px; height: 40px;
    font-size: 20px;
    color: white;
    cursor: pointer;
    backdrop-filter: blur(5px);
}

/* Board Area */
#board-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 10px;
}

/* Board Grid handled strictly by JS, but we define cell classes here */
.crossword-board {
    position: relative;
    max-width: 100%;
    max-height: 100%;
    transition: transform 0.5s ease;
}

.cell {
    position: absolute;
    background: var(--cell-bg);
    border: 3px solid var(--cell-border);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: 900;
    color: transparent;
    box-shadow: 0 4px 0px rgba(0,0,0,0.15);
    transition: all 0.3s;
}

.cell.found {
    background: var(--cell-found);
    border-color: #fff;
    color: var(--cell-found-text);
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(242, 156, 31, 0.8), 0 4px 0px rgba(0,0,0,0.2);
}

.cell.hinted {
    color: var(--text-main);
    background: #ffebcc;
}

/* Bottom Section */
#bottom-section {
    height: 45vh;
    min-height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 30px;
}

.powerups {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-bottom: 20px;
    gap: 30px;
}

.powerup-btn {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(5px);
    border: 2px solid rgba(255,255,255,0.4);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 5px 10px rgba(0,0,0,0.2);
    transition: transform 0.1s;
}

.powerup-btn:active {
    transform: translateY(4px);
}

.powerup-btn .p-icon { font-size: 24px; }
.powerup-btn .cost { font-size: 12px; background: var(--primary); padding: 2px 8px; border-radius: 10px; margin-top: -5px; }

.current-word-display {
    min-width: 120px;
    height: 45px;
    background: rgba(0,0,0,0.5);
    border-radius: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 4px;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.5);
    color: white;
}

/* Wheel */
#wheel-container {
    position: relative;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: var(--wheel-bg);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3), inset 0 0 20px rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    touch-action: none;
}

#swipe-layer {
    position: absolute;
    top: 0; left: 0;
    border-radius: 50%;
    pointer-events: none; /* Let touches pass through to letters */
    z-index: 2;
}

#letters-wrapper {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 3;
}

.wheel-letter {
    position: absolute;
    width: 60px; height: 60px;
    background: linear-gradient(145deg, #ffffff, #e6e6e6);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    font-weight: 900;
    color: var(--text-main);
    box-shadow: 0 5px 0px #b3b3b3, 0 10px 15px rgba(0,0,0,0.2);
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: transform 0.1s;
    user-select: none;
}

.wheel-letter.active {
    background: linear-gradient(145deg, #ffdb58, #ffbf00);
    box-shadow: 0 5px 0px #cc9900, 0 10px 20px rgba(255,191,0,0.5);
    color: #fff;
    transform: translate(-50%, -50%) scale(1.1);
}

/* Toast Messages */
#toast-msg {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    background: linear-gradient(45deg, #ff5f6d, #ffc371);
    color: white;
    padding: 10px 30px;
    border-radius: 30px;
    font-size: 24px;
    font-weight: 900;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 50;
}

#toast-msg.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

/* Tutorial Animation */
.tutorial-anim {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-bottom: 20px;
}

.tut-letter {
    width: 40px; height: 40px;
    background: var(--primary);
    color: white;
    font-size: 24px; font-weight: bold;
    display: flex; justify-content: center; align-items: center;
    border-radius: 8px;
    animation: pop 1.5s infinite alternate;
}
.tut-letter:nth-child(2) { animation-delay: 0.2s; }
.tut-letter:nth-child(3) { animation-delay: 0.4s; }
.tut-letter:nth-child(4) { animation-delay: 0.6s; }

@keyframes pop {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); background: var(--primary-dark); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

/* Animations for words */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}
.shake { animation: shake 0.3s ease-in-out; }

/* Responsive Adjustments */
@media (min-height: 800px) {
    #bottom-section { height: 40vh; }
    #wheel-container { width: 300px; height: 300px; }
    .wheel-letter { width: 70px; height: 70px; font-size: 32px; }
}

@media (max-width: 400px) {
    #wheel-container { width: 220px; height: 220px; }
    .wheel-letter { width: 50px; height: 50px; font-size: 24px; }
}