/* Word Game - Main Stylesheet */

/* CSS Custom Properties for theming */
:root {
    --color-bg: #121213;
    --color-surface: #1a1a1b;
    --color-text: #ffffff;
    --color-text-muted: #818384;
    --color-border: #3a3a3c;

    --color-correct: #538d4e;
    --color-present: #b59f3b;
    --color-absent: #3a3a3c;

    --color-nav-bg: #1a1a1b;
    --color-nav-link: #818384;
    --color-nav-link-active: #ffffff;

    --color-key-bg: #818384;
    --color-key-text: #ffffff;

    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    --radius-sm: 4px;
    --radius-md: 8px;

    --header-height: 60px;
    --max-content-width: 500px;
}

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

html {
    font-size: var(--font-size-base);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-nav-bg);
}

.app-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 0.05em;
}

/* Navigation */
.app-nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-nav-link);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-nav-link-active);
}

.nav-link.active {
    color: var(--color-nav-link-active);
    background-color: var(--color-border);
}

/* Main content area */
#app {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: var(--max-content-width);
    width: 100%;
    margin: 0 auto;
}

/* View containers */
.view {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Responsive layout */
@media (max-width: 600px) {
    .app-header {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .app-title {
        font-size: var(--font-size-lg);
    }

    .app-nav {
        gap: var(--spacing-sm);
    }

    #app {
        padding: var(--spacing-md) var(--spacing-sm);
    }
}

/* Settings View */
.settings-view {
    gap: var(--spacing-lg);
    align-items: stretch;
}

.settings-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.settings-section {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.settings-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.settings-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

.settings-level {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.settings-level-label {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
}

.settings-level-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-correct);
}

/* Toggle switch */
.settings-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.settings-toggle-label {
    font-size: var(--font-size-base);
    font-weight: 500;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
    cursor: pointer;
}

.toggle-input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background-color: var(--color-border);
    border-radius: 28px;
    transition: background-color 0.3s ease;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    left: 3px;
    bottom: 3px;
    background-color: var(--color-text);
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.toggle-input:checked + .toggle-slider {
    background-color: var(--color-correct);
}

.toggle-input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.toggle-input:focus-visible + .toggle-slider {
    outline: 2px solid var(--color-correct);
    outline-offset: 2px;
}

/* Sign-out button */
.settings-signout-btn {
    background-color: #c0392b;
    color: #ffffff;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: background-color 0.2s ease;
    width: 100%;
}

.settings-signout-btn:hover {
    background-color: #a93226;
}

.settings-signout-btn:focus-visible {
    outline: 2px solid #c0392b;
    outline-offset: 2px;
}

/* Toast notifications */
.settings-toast {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
    margin-top: var(--spacing-md);
}

.settings-toast--success {
    background-color: rgba(83, 141, 78, 0.2);
    color: #6aaa64;
    border: 1px solid #538d4e;
}

.settings-toast--error {
    background-color: rgba(192, 57, 43, 0.2);
    color: #e74c3c;
    border: 1px solid #c0392b;
}

/* Visually hidden (accessible text) */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Kid Mode Theme - applied via data-kid-mode="true" on body */
body[data-kid-mode="true"] {
    --color-bg: #1a1040;
    --color-surface: #2d1b69;
    --color-text: #ffffff;
    --color-text-muted: #b8a9e0;
    --color-border: #4a3580;

    --color-correct: #4caf50;
    --color-present: #ffc107;
    --color-absent: #4a3580;

    --color-nav-bg: #2d1b69;
    --color-nav-link: #b8a9e0;
    --color-nav-link-active: #ffffff;

    --color-key-bg: #6a5acd;
    --color-key-text: #ffffff;

    --font-size-base: 18px;
    --font-size-sm: 16px;
    --font-size-lg: 22px;
    --font-size-xl: 28px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* History View */
.history-stats {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--spacing-lg) 0;
    width: 100%;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    min-width: 80px;
}

.stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

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

.history-sessions {
    width: 100%;
    margin-top: var(--spacing-lg);
}

.history-sessions h3 {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.history-table th,
.history-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.history-table th {
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 12px;
}

.outcome-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    text-transform: capitalize;
}

.outcome-win {
    background-color: var(--color-correct);
    color: var(--color-text);
}

.outcome-loss {
    background-color: var(--color-absent);
    color: var(--color-text);
}

.outcome-abandon {
    background-color: var(--color-present);
    color: var(--color-text);
}

.history-loading,
.history-empty,
.history-error {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--spacing-xl) 0;
}

.history-error {
    color: #e74c3c;
}

.history-retry-btn {
    display: block;
    margin: var(--spacing-md) auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-weight: 600;
    transition: background-color 0.2s ease;
}

.history-retry-btn:hover {
    background-color: var(--color-border);
}

@media (max-width: 600px) {
    .history-stats {
        gap: var(--spacing-sm);
    }

    .stat-card {
        padding: var(--spacing-sm) var(--spacing-md);
        min-width: 65px;
    }

    .history-table th,
    .history-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 12px;
    }
}