:root {
    --primary: #FFD700;
    --primary-dark: #FFA500;
    --accent: #FF4500;
    --bg-dark: #0f172a;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text: #ffffff;
    --font-main: 'Outfit', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

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

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    background: #000;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

#ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    pointer-events: none;
}

.overlay-screen {
    flex: 1;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    pointer-events: all;
    transition: opacity 0.3s ease;
}

.overlay-screen.active {
    display: flex;
}

.game-title {
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: -2px;
    margin-bottom: 3rem;
    text-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    /* Left align "Mick's" signature */
    line-height: 0.9;
}

.micks {
    color: #ff007f;
    font-size: 1.6rem;
    letter-spacing: 4px;
    margin-bottom: 3rem;
    /* Dynamic space for the 25-degree tilt */
    margin-left: 1rem;
    display: inline-block;
    transform: rotate(-25deg);
    transform-origin: left bottom;
    animation: signaturePulse 0.8s infinite ease-in-out alternate;
}

.flappy {
    color: #00e5ff;
}

.bird {
    color: var(--primary);
}

@keyframes signaturePulse {
    0% {
        transform: rotate(-25deg) scale(1);
    }

    100% {
        transform: rotate(-25deg) scale(1.4);
    }
}

.instruction {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    opacity: 0.8;
    animation: blink 1.5s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 0.2;
    }

    50% {
        opacity: 1;
    }
}

#hud {
    position: absolute;
    top: 2rem;
    width: 100%;
    text-align: center;
    pointer-events: none;
}

#current-score {
    font-size: 5rem;
    font-weight: 900;
    opacity: 0.8;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

#game-over-screen {
    background: rgba(15, 23, 42, 0.8);
}

.status {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 2rem;
    color: var(--accent);
}

.score-container {
    margin-bottom: 2rem;
}

.score-box {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    padding: 1.5rem 3rem;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.score-box .label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    opacity: 0.6;
}

.score-box .value {
    font-size: 3rem;
    font-weight: 900;
}

#retry-button {
    background: var(--primary);
    color: #000;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 900;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    box-shadow: 0 10px 20px rgba(255, 215, 0, 0.3);
}

#retry-button:hover {
    transform: scale(1.05);
    background: var(--primary-dark);
}

#retry-button:active {
    transform: scale(0.95);
}

#high-score-table {
    margin-top: 2rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1rem 2rem;
    width: 250px;
    text-align: center;
}

#high-score-table h3 {
    font-size: 0.8rem;
    letter-spacing: 2px;
    opacity: 0.6;
    margin-bottom: 0.5rem;
}

#score-list {
    list-style: none;
    padding: 0;
}

#score-list li {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0.3rem 0;
    display: flex;
    justify-content: space-between;
}

#score-list li .rank {
    opacity: 0.4;
    font-size: 0.8rem;
}

#clear-scores-button {
    margin-top: 1rem;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 1px;
    opacity: 0.3;
    cursor: pointer;
    transition: opacity 0.2s;
    padding: 0.5rem 1rem;
}

#clear-scores-button:hover {
    opacity: 0.8;
}


.name-input-container {
    margin: 2rem 0;
}

#initials-input {
    background: transparent;
    border: none;
    border-bottom: 3px solid var(--primary);
    color: var(--text);
    font-size: 4rem;
    font-weight: 900;
    width: 200px;
    text-align: center;
    text-transform: uppercase;
    outline: none;
    font-family: var(--font-main);
    letter-spacing: 1rem;
}

#initials-input::placeholder {
    opacity: 0.2;
}

#submit-name-button {
    background: var(--text);
    color: var(--bg-dark);
    border: none;
    padding: 1rem 3rem;
    font-size: 1.2rem;
    font-weight: 900;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

#submit-name-button:hover {
    transform: scale(1.05);
    background: var(--primary);
}

.score-entry {
    position: relative;
    cursor: help;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s;
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.score-entry:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: #1e293b;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.7rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.score-entry:hover .tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(-5px);
}