:root {
    --bg-color: #0c0e12;
    --text-color: #646669;
    --text-active: #d1d0c5;
    --primary-color: #e2b714;
    --error-color: #ca4754;
    --error-extra-color: #7e2a33;
    --caret-color: #e2b714;
    --font-ui: 'Inter', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] {
    --bg-color: #f3f4f6;
    --text-color: #9ca3af;
    --text-active: #1f2937;
    --primary-color: #d97706;
    /* Amber-600 */
    --error-color: #ef4444;
    --error-extra-color: #f87171;
    --caret-color: #d97706;
    --glass-bg: rgba(0, 0, 0, 0.05);
    --glass-border: rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

.container {
    width: 100%;
    max-width: 1000px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    max-height: 800px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 2rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.icon-btn,
.theme-toggle,
.sound-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: color 0.2s, background-color 0.2s;
}

.theme-toggle:hover,
.sound-toggle:hover {
    color: var(--text-active);
    background-color: var(--glass-bg);
}

.volume-up-icon {
    display: block;
}

.volume-mute-icon {
    display: none;
}

.sound-toggle.muted .volume-up-icon {
    display: none;
}

.sound-toggle.muted .volume-mute-icon {
    display: block;
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-active);
    letter-spacing: -0.05em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '';
    display: block;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary-color);
}

.timer {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--font-mono);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 3rem;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat .label {
    font-size: 0.8rem;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat .value {
    font-family: var(--font-mono);
}

/* Game Area */
.game-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.typing-container {
    position: relative;
    font-family: var(--font-mono);
    font-size: 1.5rem;
    line-height: 1.6;
    height: 160px;
    /* Show ~3 lines nicely */
    overflow: hidden;
    user-select: none;
    margin-bottom: 2rem;
    cursor: text;
    padding: 0 4px;
}

.words {
    color: var(--text-color);
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    width: 100%;
    transition: transform 0.2s ease;
    position: relative;
    /* Added for caret positioning context */
}

.word {
    margin-right: 0.6em;
    margin-bottom: 0.5em;
    display: inline-block;
    position: relative;
}

.word.error {
    text-decoration: underline wavy var(--error-color);
}

.char {
    position: relative;
}

.char.correct {
    color: var(--text-active);
}

.char.incorrect {
    color: var(--error-color);
}

/* Caret */
.caret {
    position: absolute;
    width: 3px;
    height: 1.1em;
    border-radius: 2px;
    background-color: var(--caret-color);
    box-shadow: 0 0 12px var(--caret-color);
    top: 0;
    left: 0;
    transition: left 0.1s cubic-bezier(0.2, 0, 0.2, 1), top 0.1s cubic-bezier(0.2, 0, 0.2, 1);
    animation: blink 1.2s infinite ease-in-out;
    pointer-events: none;
    z-index: 10;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Hidden Input */
#hidden-input {
    position: absolute;
    opacity: 0;
    /* ... rest of hidden input styles ... */
    top: 0;
    left: 0;
    pointer-events: none;
}

/* Footer Instructions */
.instructions {
    text-align: center;
    font-size: 0.9rem;
    margin-top: auto;
    opacity: 0.7;
}

kbd {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    font-family: var(--font-mono);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #181a1f;
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
    min-width: 600px;
    max-height: 95vh;
    overflow-y: auto;
    scrollbar-width: none;
    /* Hide scrollbar Firefox */
}

.modal::-webkit-scrollbar {
    display: none;
    /* Hide scrollbar Chrome/Safari */
}

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

.modal h2 {
    color: var(--text-active);
    margin-bottom: 0.5rem;
    /* Further reduced from 1rem */
    font-size: 1.8rem;
    margin-top: 0;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.8rem;
    /* Further reduced from 1rem */
    align-items: start;
}

.result-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.result-item.full-width {
    grid-column: auto;
    /* No longer spanning full width */
}

.result-item .label {
    font-size: 0.9rem;
    /* Reduced */
    color: var(--text-color);
    margin-bottom: 0.2rem;
}

.result-item .sub-label {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.7;
    margin-top: 3px;
    /* Reduced from 5px */
}

.result-item .value {
    font-family: var(--font-mono);
    color: var(--primary-color);
    font-size: 1.5rem;
}

.result-item .value.big {
    font-size: 2.5rem;
    /* Reduced from 3rem */
    font-weight: 700;
}

.restart-btn {
    background: var(--primary-color);
    color: var(--bg-color);
    border: none;
    padding: 0.8rem 2rem;
    /* Reduced vertical padding */
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.1s, filter 0.2s;
    font-family: var(--font-ui);
    margin-top: 0;
    /* Removed margin-top */
}

/* Animations */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.2s ease-in-out;
}

.char.extra {
    color: var(--error-extra-color);
    opacity: 0.8;
}

@keyframes pulse {
    0% {
        opacity: 1;
        transform: scale(1);
        color: var(--primary-color);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.1);
        color: var(--error-color);
    }

    100% {
        opacity: 1;
        transform: scale(1);
        color: var(--primary-color);
    }
}

.timer.pulse {
    animation: pulse 1s infinite;
}

/* Mode Selector */
.mode-selector {
    display: flex;
    background: var(--glass-bg);
    padding: 0.3rem;
    border-radius: 8px;
    gap: 0.5rem;
    border: 1px solid var(--glass-border);
}

.mode-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.mode-btn:hover {
    color: var(--text-active);
    background: rgba(255, 255, 255, 0.05);
}

.mode-btn.active {
    background: var(--primary-color);
    color: var(--bg-color);
    font-weight: 600;
}

/* Chart Styles */
.chart-container {
    width: 100%;
    height: 80px;
    margin: 5px 0;
    /* Reduced from 10px */
    transition: all 0.3s ease;
    position: relative;
    /* Context for absolute positioning */
}

#chart-peak-label {
    position: absolute;
    top: 5px;
    left: 5px;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    color: var(--text-color);
    opacity: 0.7;
    pointer-events: none;
    /* Let clicks pass through */
    z-index: 10;
}

#wpm-chart {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.chart-line {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.chart-area {
    fill: var(--primary-color);
    opacity: 0.15;
}

.chart-axis {
    stroke: var(--text-color);
    stroke-width: 1;
    opacity: 0.2;
}

.chart-tooltip {
    display: none;
    /* Deprecated in favor of HTML label */
}

/* Keyboard Heatmap */
.heatmap-container {
    width: 100%;
    max-width: 480px;
    margin: 5px auto;
    background: transparent;
    padding: 5px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.kb-row {
    display: flex;
    justify-content: center;
    gap: 4px;
}

/* Natural centering creates better symmetry than manual stagger */
.kb-row:nth-child(2) {
    margin-left: 0;
}

.kb-row:nth-child(3) {
    margin-left: 0;
}

.kb-key {
    width: 28px;
    /* Reduced key size */
    height: 28px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    /* Reduced font size */
    color: var(--text-color);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
    user-select: none;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
}

.kb-key.heat-1 {
    background-color: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.kb-key.heat-2 {
    background-color: rgba(239, 68, 68, 0.35);
    border-color: rgba(239, 68, 68, 0.5);
    color: #fee2e2;
}

.kb-key.heat-3 {
    background-color: rgba(239, 68, 68, 0.6);
    border-color: rgba(239, 68, 68, 0.7);
    color: #fff;
    font-weight: 600;
    transform: translateY(1px);
    /* Pressed effect */
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.kb-key.heat-4 {
    background-color: rgba(220, 38, 38, 0.9);
    border-color: rgba(220, 38, 38, 1.0);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 0 15px rgba(220, 38, 38, 0.4);
    transform: translateY(1px);
}