:root {
    --bg-color: #0f0c29;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --primary-neon: #00f3ff; /* Cyan */
    --secondary-neon: #ff00ff; /* Magenta */
    --bull-color: #00ff88; /* Green */
    --cow-color: #ffaa00; /* Orange */
    --error-color: #ff3333;
    --font-family: 'Outfit', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none; /* Prevent text selection on game UI */
}

body {
    font-family: var(--font-family);
    background: var(--bg-color);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

/* Background Blobs */
.background-blobs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-neon);
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-neon);
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.blob-3 {
    width: 200px;
    height: 200px;
    background: #7000ff;
    top: 40%;
    left: 60%;
    animation-duration: 15s;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(30px, 50px); }
}

/* Glass Container */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.game-container {
    width: 90%;
    max-width: 450px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    padding: 20px;
    position: relative;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--glass-border);
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.highlight {
    color: var(--primary-neon);
}

.header-buttons {
    display: flex;
    gap: 10px;
    align-items: center;
}

.icon-btn {
    background: none;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.icon-btn:hover {
    background: var(--glass-border);
    box-shadow: 0 0 10px var(--primary-neon);
    border-color: var(--primary-neon);
}

/* Game Board */
.game-board {
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Scrollbar styling */
.game-board::-webkit-scrollbar {
    width: 6px;
}
.game-board::-webkit-scrollbar-track {
    background: transparent;
}
.game-board::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 30px 20px;
    font-size: 0.9rem;
}

/* Guess Rows */
.guess-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.guess-nums {
    font-family: monospace;
    font-size: 1.5rem;
    letter-spacing: 8px;
    font-weight: 700;
    color: var(--text-main);
}

.guess-feedback {
    display: flex;
    gap: 12px;
    font-size: 0.9rem;
    font-weight: 500;
}

.bulls { color: var(--bull-color); text-shadow: 0 0 5px rgba(0, 255, 136, 0.4); }
.cows { color: var(--cow-color); text-shadow: 0 0 5px rgba(255, 170, 0, 0.4); }

/* Input Area */
.input-area {
    margin-top: 20px;
}

.current-input-display {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
    height: 60px;
}

.digit-box {
    width: 50px;
    height: 60px;
    border-bottom: 2px solid var(--glass-border);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    font-weight: 700;
    transition: all 0.2s;
}

.digit-box.filled {
    border-color: var(--primary-neon);
    text-shadow: 0 0 10px var(--primary-neon);
}

.digit-box.active {
    border-color: var(--secondary-neon);
}

/* Keypad */
.keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.key {
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: var(--text-main);
    padding: 15px;
    font-size: 1.2rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.1s active;
}

.key:active {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(0.95);
}

.action-key {
    font-weight: 700;
    color: var(--secondary-neon);
}

#enter-btn {
    color: var(--primary-neon);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.3s;
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    padding: 30px;
    width: 85%;
    max-width: 400px;
    text-align: center;
    transform: scale(1);
    transition: transform 0.3s;
}

.modal.hidden .modal-content {
    transform: scale(0.8);
}

.modal h2 {
    margin-bottom: 20px;
    color: var(--primary-neon);
}

.modal ul {
    text-align: left;
    margin-bottom: 25px;
    list-style-position: inside;
    line-height: 1.6;
}

.bull-text { color: var(--bull-color); font-weight: bold; }
.cow-text { color: var(--cow-color); font-weight: bold; }

.primary-btn, .close-btn {
    background: linear-gradient(45deg, var(--primary-neon), #00aaff);
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    color: #000;
    font-weight: 700;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.4);
    transition: transform 0.2s;
}

.primary-btn:hover, .close-btn:hover {
    transform: scale(1.05);
}

.secret-reveal {
    margin: 20px 0;
    font-size: 1.5rem;
    letter-spacing: 5px;
    color: var(--secondary-neon);
}

/* Animations */
.shake {
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}