/* Spello Main Styles */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800&family=Orbitron:wght@400;500;600;700;800&display=swap');

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Base */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

h1 {
    font-size: var(--font-size-3xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
}

h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary-light);
}

p {
    margin-bottom: var(--space-md);
}

/* Links */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, a:focus {
    color: var(--color-primary-light);
}

/* Screen Container */
.screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.screen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
}

.screen-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.screen-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Loading Screen */
.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    gap: var(--space-xl);
}

.loading-text {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    animation: pulse 1.5s ease-in-out infinite;
}

/* User Stats Bar */
.stats-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-primary);
    margin-bottom: var(--space-lg);
}

.stats-bar-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.stats-bar-icon {
    width: 24px;
    height: 24px;
}

.stats-bar-value {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-md);
}

.xp-display {
    color: var(--color-xp);
}

.streak-display {
    color: var(--color-streak);
}

.level-display {
    position: relative;
    color: var(--color-primary);
}

/* XP Progress Bar */
.xp-bar {
    width: 100%;
    height: 8px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-top: var(--space-xs);
}

.xp-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-xp), var(--color-success));
    border-radius: var(--radius-sm);
    transition: width var(--transition-slow);
}

/* Main Menu Grid */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    border-left: 2px solid var(--color-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    min-height: 140px;
}

.menu-item:hover, .menu-item:focus {
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

.menu-item:nth-child(2) { border-left-color: var(--color-secondary); }
.menu-item:nth-child(3) { border-left-color: var(--color-accent); }
.menu-item:nth-child(4) { border-left-color: var(--color-success); }
.menu-item:nth-child(5) { border-left-color: var(--color-error); }
.menu-item:nth-child(6) { border-left-color: var(--color-warning); }

.menu-item:nth-child(2):hover, .menu-item:nth-child(2):focus {
    border-color: var(--color-secondary);
    box-shadow: var(--glow-secondary);
}
.menu-item:nth-child(3):hover, .menu-item:nth-child(3):focus {
    border-color: var(--color-accent);
    box-shadow: var(--glow-accent);
}
.menu-item:nth-child(4):hover, .menu-item:nth-child(4):focus {
    border-color: var(--color-success);
    box-shadow: var(--glow-success);
}
.menu-item:nth-child(5):hover, .menu-item:nth-child(5):focus {
    border-color: var(--color-error);
    box-shadow: var(--glow-error);
}
.menu-item:nth-child(6):hover, .menu-item:nth-child(6):focus {
    border-color: var(--color-warning);
    box-shadow: var(--glow-warning);
}

.menu-item:active {
    transform: translateY(0);
}

.menu-item-icon {
    font-size: 48px;
    margin-bottom: var(--space-sm);
}

.menu-item-label {
    font-family: var(--font-family-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
}

/* Spelling Test Area */
.test-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
}

.test-progress {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.test-progress-bar {
    flex: 1;
    height: 12px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.test-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-success));
    border-radius: var(--radius-sm);
    transition: width var(--transition-normal);
}

.test-progress-text {
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    min-width: 60px;
    text-align: right;
}

.test-word-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.test-mascot {
    width: 120px;
    height: 120px;
}

.test-instruction {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    text-align: center;
}

.test-input-container {
    width: 100%;
    position: relative;
}

.test-input {
    width: 100%;
    padding: var(--space-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    text-align: center;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    color: var(--color-text);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.test-input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
}

.test-input.correct {
    border-color: var(--color-success);
    box-shadow: var(--glow-success);
    background: var(--color-success-bg);
}

.test-input.incorrect {
    border-color: var(--color-error);
    background: var(--color-error-bg);
    animation: shake 0.5s ease;
}

.test-controls {
    display: flex;
    gap: var(--space-md);
    width: 100%;
}

/* Play Button (for TTS) */
.play-button {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-bounce), box-shadow var(--transition-fast);
    box-shadow: var(--glow-primary);
}

.play-button:hover, .play-button:focus {
    transform: scale(1.1);
    box-shadow: var(--glow-primary-strong);
}

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

.play-button-icon {
    width: 32px;
    height: 32px;
    fill: var(--color-text-inverse);
}

/* Results Screen */
.results-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
    text-align: center;
}

.results-mascot {
    width: 150px;
    height: 150px;
}

.results-score {
    font-family: var(--font-family-display);
    font-size: var(--font-size-4xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-message {
    font-size: var(--font-size-xl);
    color: var(--color-text);
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    width: 100%;
    margin: var(--space-xl) 0;
}

.results-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.results-stat:nth-child(1) { border-top: 2px solid var(--color-success); }
.results-stat:nth-child(2) { border-top: 2px solid var(--color-primary); }
.results-stat:nth-child(3) { border-top: 2px solid var(--color-accent); }

.results-stat:nth-child(1) .results-stat-value { color: var(--color-success); }
.results-stat:nth-child(2) .results-stat-value { color: var(--color-primary); }
.results-stat:nth-child(3) .results-stat-value { color: var(--color-accent); }

.results-stat-value {
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.results-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.results-xp-gained {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, var(--color-xp), var(--color-secondary));
    border-radius: var(--radius-full);
    color: var(--color-text-inverse);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

/* Word List Screen */
.wordlist-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.wordlist-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    border-left: 2px solid var(--color-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.wordlist-item:nth-child(even) { border-left-color: var(--color-accent); }

.wordlist-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
    transform: translateX(4px);
}

.wordlist-item:nth-child(even):hover {
    border-color: var(--color-accent);
    box-shadow: var(--glow-accent);
}

.wordlist-info {
    display: flex;
    flex-direction: column;
}

.wordlist-name {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: #ffffff;
}

.wordlist-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.wordlist-badge {
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-primary-bg);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
}

/* User Selection */
.user-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.user-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-card:nth-child(1) { border-bottom: 2px solid var(--color-primary); }
.user-card:nth-child(2) { border-bottom: 2px solid var(--color-secondary); }
.user-card:nth-child(3) { border-bottom: 2px solid var(--color-accent); }
.user-card:nth-child(4) { border-bottom: 2px solid var(--color-success); }

.user-card:hover, .user-card:focus {
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

.user-card:nth-child(2):hover, .user-card:nth-child(2):focus {
    border-color: var(--color-secondary);
    box-shadow: var(--glow-secondary);
}
.user-card:nth-child(3):hover, .user-card:nth-child(3):focus {
    border-color: var(--color-accent);
    box-shadow: var(--glow-accent);
}
.user-card:nth-child(4):hover, .user-card:nth-child(4):focus {
    border-color: var(--color-success);
    box-shadow: var(--glow-success);
}

.user-card.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.user-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    background: var(--color-primary-bg);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin-bottom: var(--space-md);
}

.user-name {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: #ffffff;
}

.user-card-add {
    border: 2px dashed var(--color-border);
    background: transparent;
}

.user-card-add:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

/* Error Find Quiz */
.error-find-paragraph {
    user-select: none;
    -webkit-user-select: none;
}

.paragraph-word {
    display: inline;
    cursor: pointer;
    padding: 2px 4px;
    margin: 0 -2px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.paragraph-word:hover {
    background-color: var(--color-primary-bg);
}

.paragraph-word.selected {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.paragraph-word.corrected-correct {
    background-color: var(--color-success-bg);
    color: var(--color-success);
    cursor: default;
    text-decoration: none;
}

.paragraph-word.corrected-incorrect {
    background-color: var(--color-error-bg);
    color: var(--color-error);
    cursor: default;
}

.difficulty-btn {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    transition: all var(--transition-fast);
}

.difficulty-btn:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-bg);
    box-shadow: var(--glow-accent);
}

/* Utilities */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Responsive */
@media (max-width: 480px) {
    :root {
        --font-size-3xl: 32px;
        --font-size-4xl: 40px;
    }

    .screen {
        padding: var(--space-md);
    }

    .menu-grid {
        gap: var(--space-sm);
    }

    .menu-item {
        padding: var(--space-lg);
        min-height: 120px;
    }

    .menu-item-icon {
        font-size: 36px;
    }

    .user-grid {
        gap: var(--space-md);
    }
}

@media (min-width: 768px) {
    .screen {
        padding: var(--space-xl);
    }
}