/* ==========================================================================
   Ego Development Assessment - Styles v2
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables / Theme
   -------------------------------------------------------------------------- */

:root {
    /* Colors - Light theme */
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #e9ecef;
    --color-text: #212529;
    --color-text-secondary: #6c757d;
    --color-text-muted: #adb5bd;
    --color-border: #dee2e6;
    --color-border-light: #e9ecef;

    /* Brand colors */
    --color-primary: #4361ee;
    --color-primary-hover: #3a56d4;
    --color-primary-light: #eef1fd;
    --color-secondary: #6c757d;
    --color-accent: #f72585;
    --color-success: #2ecc71;
    --color-warning: #f39c12;
    --color-error: #e74c3c;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, Consolas, 'Liberation Mono', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --max-width: 800px;
    --header-height: 60px;
}

/* Dark theme */
[data-theme="dark"] {
    --color-bg: #1a1a2e;
    --color-bg-secondary: #16213e;
    --color-bg-tertiary: #0f3460;
    --color-text: #eaeaea;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;
    --color-border: #2d2d44;
    --color-border-light: #252538;
    --color-primary: #4cc9f0;
    --color-primary-hover: #3ab8df;
    --color-primary-light: #1a2a3e;
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

body.modal-open {
    overflow: hidden;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
    margin: 0 0 var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */

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

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
}

.header__content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__title h1 {
    font-size: var(--font-size-lg);
    margin: 0;
}

.header__subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.footer {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--color-border);
}

.footer p {
    margin-bottom: var(--spacing-sm);
}

/* --------------------------------------------------------------------------
   Screens
   -------------------------------------------------------------------------- */

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

.screen__content {
    max-width: var(--max-width);
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

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

.screen--entering {
    opacity: 0;
    transform: translateY(10px);
}

.screen--active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background: var(--color-primary);
    color: white;
}

.btn--primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

.btn--secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.btn--secondary:hover:not(:disabled) {
    background: var(--color-border);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn--ghost:hover:not(:disabled) {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.btn--accent {
    background: var(--color-accent);
    color: white;
}

.btn--small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn--full {
    width: 100%;
}

.btn--icon {
    padding: var(--spacing-sm);
    background: transparent;
}

/* Theme toggle */
.theme-icon--light,
.theme-icon--dark {
    display: none;
}

[data-theme="dark"] .theme-icon--dark,
:not([data-theme="dark"]) .theme-icon--light {
    display: inline;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
}

.form-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* Toggle switches */
.toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
}

.toggle input {
    display: none;
}

.toggle__switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.toggle__switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.toggle input:checked + .toggle__switch {
    background: var(--color-primary);
}

.toggle input:checked + .toggle__switch::after {
    transform: translateX(20px);
}

.toggle__label {
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Welcome Screen
   -------------------------------------------------------------------------- */

.welcome__section {
    margin-bottom: var(--spacing-xl);
}

.welcome__intro {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.username-form {
    margin: var(--spacing-xl) 0;
}

.username-form label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.stats-row {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat__value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.settings-section {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.settings-section h4 {
    margin-bottom: var(--spacing-md);
}

.instructions {
    margin-bottom: var(--spacing-xl);
}

.instructions__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.instructions__list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.instructions__list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.unlocks-preview {
    margin-bottom: var(--spacing-xl);
}

.unlock-tiers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.unlock-tier {
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.unlock-tier__count {
    display: inline-block;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    margin-right: var(--spacing-sm);
}

.welcome__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.notes {
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.notes p {
    margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   Assessment Screen
   -------------------------------------------------------------------------- */

.progress {
    margin-bottom: var(--spacing-xl);
}

.progress__bar {
    height: 4px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress__fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.progress__text {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.stem-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

.stem-card__number {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.stem-card__text {
    font-size: var(--font-size-xl);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.ready-gate {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.input-container {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.response-input {
    flex: 1;
    min-height: 120px;
    resize: vertical;
}

.input-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.submit-hint kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
}

.post-submit-time {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.post-submit-time-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.nav-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.scoring-display {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.scoring-display__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.scoring-display__header h3 {
    margin: 0;
    font-size: var(--font-size-base);
}

.scoring-status {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.unlock-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.unlock-message__icon {
    font-size: var(--font-size-lg);
}

.scoring-result {
    animation: fadeIn var(--transition-base);
}

.scoring-stage {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.scoring-confidence {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.scoring-reasoning {
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Review Screen
   -------------------------------------------------------------------------- */

.responses-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.review-item {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

.review-stem {
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.review-response {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.review-response em {
    color: var(--color-text-muted);
}

.review__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.missing-section {
    padding: var(--spacing-lg);
    background: var(--color-warning);
    color: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Results Screen
   -------------------------------------------------------------------------- */

.results__summary {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.timestamp {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.score-section {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.average-stage {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.results__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

/* --------------------------------------------------------------------------
   Leaderboard
   -------------------------------------------------------------------------- */

.leaderboard__table-wrapper {
    overflow-x: auto;
}

.leaderboard__table {
    width: 100%;
    border-collapse: collapse;
}

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

.leaderboard__table th {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.leaderboard__table tr:hover td {
    background: var(--color-bg-secondary);
}

.leaderboard__table .loading,
.leaderboard__table .error {
    text-align: center;
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Modals
   -------------------------------------------------------------------------- */

.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-xl);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: modalIn var(--transition-base);
}

.modal__close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.modal__close:hover {
    background: var(--color-bg-tertiary);
}

.modal__content--unlock,
.modal__content--unlock-required {
    text-align: center;
}

.unlock-celebration,
.lock-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.unlock-progress {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin: var(--spacing-lg) 0;
}

/* --------------------------------------------------------------------------
   Overlay
   -------------------------------------------------------------------------- */

.overlay {
    position: fixed;
    inset: 0;
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.overlay__content {
    text-align: center;
    color: white;
}

.pause-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
}

.overlay h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.overlay p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */

.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-text);
    color: var(--color-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateX(100%);
    transition: all var(--transition-base);
}

.toast--visible {
    opacity: 1;
    transform: translateX(0);
}

.toast--success {
    background: var(--color-success);
    color: white;
}

.toast--warning {
    background: var(--color-warning);
    color: white;
}

.toast--error {
    background: var(--color-error);
    color: white;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */

.dev-only {
    display: none;
}

.loading {
    color: var(--color-text-secondary);
}

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

.warning {
    color: var(--color-warning);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 600px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
    }

    .header__subtitle {
        display: none;
    }

    .stats-row {
        justify-content: center;
    }

    .nav-buttons {
        flex-direction: column;
    }

    .nav-buttons .btn {
        width: 100%;
    }

    .welcome__actions {
        flex-direction: column;
    }

    .welcome__actions .btn {
        width: 100%;
    }
}