/* ============================================
   8-BIT BPM CALCULATOR STYLES
   ============================================ */

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 8-bit Color Palette - Classic Theme (Default) */
    --color-bg: #0a0a0a;
    --color-primary: #00ff00;
    --color-secondary: #ff00ff;
    --color-accent: #00ffff;
    --color-text: #ffffff;
    --color-border: #00ff00;
    --color-shadow: rgba(0, 255, 0, 0.5);

    /* Button-specific colors */
    --color-button-dark: #00aa00;
    --color-button-light: #00dd00;
    --color-button-shadow: rgba(0, 255, 0, 0.4);

    /* Transparent overlays */
    --color-container-inset: rgba(0, 255, 0, 0.1);
    --color-accent-glow: rgba(0, 255, 255, 0.3);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;

    /* Fonts */
    --font-main: 'Press Start 2P', cursive;
}

/* Severance Theme - Dark/mysterious with blues, greens, and blacks */
[data-theme="severance"] {
    --color-bg: #0d1117;
    --color-primary: #2f4858;
    --color-secondary: #1a3a3a;
    --color-accent: #4a7c7e;
    --color-text: #c9d1d9;
    --color-border: #2f4858;
    --color-shadow: rgba(47, 72, 88, 0.5);

    --color-button-dark: #1f3040;
    --color-button-light: #3f5868;
    --color-button-shadow: rgba(47, 72, 88, 0.4);

    --color-container-inset: rgba(47, 72, 88, 0.1);
    --color-accent-glow: rgba(74, 124, 126, 0.3);
}

/* Wildtech Theme - Warm earth tones with orange and brown */
[data-theme="wildtech"] {
    --color-bg: #2b1a0f;
    --color-primary: #ff7b00;
    --color-secondary: #8b4513;
    --color-accent: #d4a574;
    --color-text: #f5deb3;
    --color-border: #ff7b00;
    --color-shadow: rgba(255, 123, 0, 0.5);

    --color-button-dark: #cc6200;
    --color-button-light: #ff9933;
    --color-button-shadow: rgba(255, 123, 0, 0.4);

    --color-container-inset: rgba(255, 123, 0, 0.1);
    --color-accent-glow: rgba(212, 165, 116, 0.3);
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-sm);

    /* Smooth theme transitions */
    transition: background-color 0.3s ease, color 0.3s ease;

    /* Scanline effect for CRT monitor feel */
    background-image:
        repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, 0.15),
            rgba(0, 0, 0, 0.15) 1px,
            transparent 1px,
            transparent 2px
        );
}

/* Container */
.container {
    max-width: 800px;
    width: 100%;
    border: 4px solid var(--color-border);
    box-shadow:
        0 0 20px var(--color-shadow),
        inset 0 0 20px var(--color-container-inset);
    padding: var(--spacing-md);
    background-color: rgba(0, 0, 0, 0.8);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--color-border);
}

.title {
    font-size: clamp(1rem, 4vw, 1.5rem);
    color: var(--color-primary);
    text-shadow:
        2px 2px 0 var(--color-secondary),
        4px 4px 10px var(--color-shadow);
    letter-spacing: 0.1em;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow:
            2px 2px 0 var(--color-secondary),
            4px 4px 10px var(--color-shadow);
    }
    to {
        text-shadow:
            2px 2px 0 var(--color-secondary),
            4px 4px 20px var(--color-primary),
            4px 4px 30px var(--color-primary);
    }
}

/* Main Content */
.main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

/* BPM Display */
.bpm-display {
    text-align: center;
    padding: var(--spacing-md);
    border: 3px solid var(--color-accent);
    background-color: rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 0 15px var(--color-accent-glow);
}

.bpm-label {
    font-size: clamp(0.8rem, 2vw, 1rem);
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.2em;
}

.bpm-value {
    font-size: clamp(2rem, 8vw, 4rem);
    color: var(--color-primary);
    text-shadow: 0 0 10px var(--color-primary);
    line-height: 1.2;
    min-height: 1.2em;
}

/* Tap Button */
.tap-button {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg) var(--spacing-md);
    font-family: var(--font-main);
    font-size: clamp(1rem, 3vw, 1.2rem);
    color: var(--color-bg);
    background-color: var(--color-primary);
    border: 4px solid var(--color-primary);
    cursor: pointer;
    position: relative;
    transition: all 0.1s ease;
    box-shadow:
        0 8px 0 var(--color-button-dark),
        0 8px 20px var(--color-button-shadow);
}

.tap-button:hover {
    background-color: var(--color-button-light);
    border-color: var(--color-button-light);
    box-shadow:
        0 8px 0 var(--color-button-dark),
        0 8px 30px var(--color-shadow);
}

.tap-button:active,
.tap-button.active {
    transform: translateY(4px);
    box-shadow:
        0 4px 0 var(--color-button-dark),
        0 4px 10px var(--color-button-shadow);
}

.tap-text {
    display: block;
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    margin-bottom: var(--spacing-xs);
}

.tap-hint {
    display: block;
    font-size: clamp(0.5rem, 2vw, 0.7rem);
    opacity: 0.8;
}

/* Info Section */
.info-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 400px;
    gap: var(--spacing-md);
}

.tap-count {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border: 2px solid var(--color-secondary);
    background-color: rgba(0, 0, 0, 0.5);
    flex: 1;
}

.info-label {
    font-size: clamp(0.6rem, 2vw, 0.8rem);
    color: var(--color-secondary);
}

.info-value {
    font-size: clamp(0.8rem, 3vw, 1.2rem);
    color: var(--color-primary);
}

/* Reset Button */
.reset-button {
    font-family: var(--font-main);
    font-size: clamp(0.6rem, 2vw, 0.8rem);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.reset-button:hover {
    background-color: var(--color-secondary);
    color: var(--color-bg);
    box-shadow: 0 0 10px var(--color-secondary);
}

.reset-button:active {
    transform: scale(0.95);
}

/* Instructions */
.instructions {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border: 2px dashed var(--color-border);
    background-color: rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 500px;
}

.instructions p {
    font-size: clamp(0.5rem, 1.5vw, 0.65rem);
    line-height: 1.8;
    color: var(--color-text);
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.instructions p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--color-border);
    text-align: center;
}

.footer p {
    font-size: clamp(0.4rem, 1.5vw, 0.6rem);
    color: var(--color-text);
    opacity: 0.5;
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

.footer p:last-child {
    margin-bottom: 0;
}

.footer a {
    color: var(--color-accent);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid transparent;
}

.footer a:hover {
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-primary);
    opacity: 1;
    text-shadow: 0 0 5px var(--color-primary);
}

.footer a:focus-visible {
    outline: 2px dashed var(--color-accent);
    outline-offset: 2px;
}

/* Theme Selector */
.theme-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.theme-label {
    font-size: clamp(0.5rem, 1.5vw, 0.7rem);
    color: var(--color-text);
    opacity: 0.7;
    letter-spacing: 0.1em;
}

.theme-button {
    display: flex;
    gap: 3px;
    padding: 6px;
    background-color: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all 0.2s ease;
    opacity: 0.6;
}

.theme-button:hover {
    opacity: 0.8;
    transform: scale(1.05);
    box-shadow: 0 0 10px var(--color-shadow);
}

.theme-button.active {
    opacity: 1;
    border-color: var(--color-primary);
    box-shadow: 0 0 15px var(--color-shadow);
}

.theme-button:focus-visible {
    outline: 2px dashed var(--color-accent);
    outline-offset: 3px;
}

.theme-color {
    width: 12px;
    height: 12px;
    display: block;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Button Press Animation */
@keyframes buttonPress {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

.tap-button.pressed {
    animation: buttonPress 0.2s ease;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: var(--spacing-sm);
    }

    .info-section {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .tap-count,
    .reset-button {
        width: 100%;
    }

    .tap-count {
        justify-content: center;
    }
}

/* Focus styles for accessibility */
button:focus-visible {
    outline: 3px dashed var(--color-accent);
    outline-offset: 4px;
}

/* Prevent text selection on buttons */
button {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
}