/* =====================================================
   Startup Quest - Modern Pixel Indie Game UI
   ===================================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Modern Purple Theme */
    --color-primary: #6366F1;
    --color-primary-dark: #4F46E5;
    --color-secondary: #8B5CF6;
    --color-accent: #F59E0B;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    --color-info: #3B82F6;

    --color-bg: #F8FAFC;
    --color-bg-dark: #E2E8F0;
    --color-panel: #FFFFFF;
    --color-text: #1E293B;
    --color-text-muted: #64748B;
    --color-border: #CBD5E1;
    --color-border-dark: #94A3B8;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-pixel: 'Courier New', Courier, monospace;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0F172A;
        --color-bg-dark: #1E293B;
        --color-panel: #1E293B;
        --color-text: #F1F5F9;
        --color-text-muted: #94A3B8;
        --color-border: #334155;
        --color-border-dark: #475569;
    }
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

.pixel-text {
    font-family: var(--font-pixel);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* =====================================================
   Loading Screen
   ===================================================== */
.loading-screen {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.pixel-loader {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: var(--space-lg);
    font-family: var(--font-pixel);
    color: white;
    font-size: 1.125rem;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* =====================================================
   HUD (Header)
   ===================================================== */
.hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--color-panel);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.hud-left, .hud-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.hud-center {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.hud-stat {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-pixel);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.hud-progress {
    width: 150px;
    height: 8px;
    background: var(--color-bg-dark);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-success), var(--color-primary));
    border-radius: 4px;
    transition: width var(--transition-normal);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--transition-fast);
    color: white;
}

.user-avatar:hover {
    transform: scale(1.05);
}

.emote-buttons {
    display: flex;
    gap: var(--space-xs);
}

.emote-btn {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.emote-btn:hover {
    background: var(--color-bg-dark);
    transform: scale(1.1);
}

/* =====================================================
   Navigation
   ===================================================== */
.nav-bar {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    height: 48px;
    background: var(--color-panel);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    z-index: 99;
}

.nav-btn {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background: var(--color-bg-dark);
    color: var(--color-text);
}

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

/* =====================================================
   Main Content
   ===================================================== */
.content {
    margin-top: 112px;
    padding: var(--space-xl);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    min-height: calc(100vh - 112px);
}

.hidden {
    display: none !important;
}

/* =====================================================
   Buttons
   ===================================================== */
.pixel-btn {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-panel);
    border: 2px solid var(--color-border);
    color: var(--color-text);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.pixel-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.pixel-btn:active {
    transform: translateY(0);
}

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

.pixel-btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

.pixel-btn--success {
    background: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.pixel-btn--danger {
    background: var(--color-danger);
    border-color: var(--color-danger);
    color: white;
}

.pixel-btn--large {
    font-size: 1rem;
    padding: var(--space-md) var(--space-xl);
}

.pixel-btn--block {
    width: 100%;
}

/* =====================================================
   Inputs
   ===================================================== */
.pixel-input, .pixel-textarea, .pixel-select {
    font-family: var(--font-body);
    font-size: 1rem;
    padding: var(--space-md);
    background: var(--color-panel);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    width: 100%;
    transition: all var(--transition-fast);
}

.pixel-input:focus, .pixel-textarea:focus, .pixel-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.pixel-input::placeholder {
    color: var(--color-text-muted);
}

.pixel-input.error {
    border-color: var(--color-danger);
}

.pixel-textarea {
    min-height: 120px;
    resize: vertical;
}

.pixel-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* =====================================================
   Panels & Cards
   ===================================================== */
.pixel-panel {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.pixel-panel--flush {
    padding: 0;
}

.pixel-panel__header {
    font-family: var(--font-pixel);
    font-size: 1rem;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* =====================================================
   Dashboard Grid
   ===================================================== */
.dashboard-welcome {
    font-family: var(--font-pixel);
    font-size: 1.5rem;
    margin-bottom: var(--space-xl);
    color: var(--color-primary);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.dashboard-card {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.dashboard-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.dashboard-card__header {
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    font-family: var(--font-pixel);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.dashboard-card__body {
    padding: var(--space-lg);
}

.dashboard-card__body p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

/* =====================================================
   Auth Pages
   ===================================================== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-dark) 100%);
}

.auth-box {
    width: 100%;
    max-width: 440px;
    background: var(--color-panel);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2xl);
}

.auth-title {
    font-family: var(--font-pixel);
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-primary);
}

.auth-tabs {
    display: flex;
    margin-bottom: var(--space-xl);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 4px;
}

.auth-tab {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.auth-tab:hover {
    color: var(--color-text);
}

.auth-tab.active {
    background: var(--color-panel);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* =====================================================
   Forms
   ===================================================== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.form-label--required::after {
    content: ' *';
    color: var(--color-danger);
}

.form-help {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: 0.875rem;
    color: var(--color-danger);
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-sm);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

/* Password match indicator */
.password-match {
    font-size: 0.75rem;
    margin-top: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.password-match--valid {
    color: var(--color-success);
}

.password-match--invalid {
    color: var(--color-danger);
}

/* =====================================================
   Teacher Dashboard - Class Code
   ===================================================== */
.class-code-display {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.class-code-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: var(--space-sm);
}

.class-code {
    font-family: var(--font-pixel);
    font-size: 2.5rem;
    letter-spacing: 8px;
    font-weight: bold;
    margin: var(--space-md) 0;
}

.class-code-copy {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.class-code-copy:hover {
    background: rgba(255, 255, 255, 0.3);
}

.class-code-instruction {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: var(--space-md);
}

/* Team list for teacher */
.team-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.team-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

.team-item__name {
    font-weight: 600;
}

.team-item__members {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.team-item__progress {
    width: 100px;
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.team-item__progress-fill {
    height: 100%;
    background: var(--color-success);
}

/* =====================================================
   World Map
   ===================================================== */
.world-map {
    position: relative;
    width: 100%;
    min-height: 500px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-dark) 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    padding: var(--space-xl);
}

.world-zone {
    position: absolute;
    width: 140px;
    padding: var(--space-lg);
    background: var(--color-panel);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.world-zone:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.world-zone--locked {
    opacity: 0.5;
    filter: grayscale(0.5);
    cursor: not-allowed;
}

.world-zone--locked:hover {
    transform: none;
}

.world-zone__npc {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.world-zone__name {
    font-family: var(--font-pixel);
    font-size: 0.75rem;
    text-align: center;
    margin-top: var(--space-sm);
    color: var(--color-text);
}

.world-zone__progress {
    width: 100%;
    height: 6px;
    background: var(--color-bg-dark);
    border-radius: 3px;
    margin-top: var(--space-sm);
    overflow: hidden;
}

.world-zone__progress-fill {
    height: 100%;
    background: var(--color-success);
    border-radius: 3px;
}

/* =====================================================
   Quest Cards
   ===================================================== */
.quest-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.quest-card {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    overflow: hidden;
}

.quest-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.quest-card--locked {
    opacity: 0.6;
    cursor: not-allowed;
}

.quest-card--locked:hover {
    transform: none;
    border-color: var(--color-border);
}

.quest-card--completed {
    border-color: var(--color-success);
}

.quest-card__header {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.quest-card__icon {
    font-size: 1.25rem;
}

.quest-card__title {
    font-weight: 600;
    font-size: 0.875rem;
    flex: 1;
}

.quest-card__status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    text-transform: uppercase;
}

.quest-card__status--locked {
    background: var(--color-bg-dark);
    color: var(--color-text-muted);
}

.quest-card__status--available {
    background: var(--color-warning);
    color: white;
}

.quest-card__status--in_progress {
    background: var(--color-info);
    color: white;
}

.quest-card__status--submitted {
    background: var(--color-secondary);
    color: white;
}

.quest-card__status--completed,
.quest-card__status--approved {
    background: var(--color-success);
    color: white;
}

.quest-card__body {
    padding: var(--space-lg);
}

.quest-card__desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    line-height: 1.5;
}

.quest-card__meta {
    display: flex;
    gap: var(--space-lg);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* =====================================================
   Modals
   ===================================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    animation: fadeIn 0.2s ease;
    padding: var(--space-lg);
}

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

.modal {
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-panel);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.2s ease;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
}

.modal__header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal__title {
    font-family: var(--font-pixel);
    font-size: 1.125rem;
    color: var(--color-primary);
}

.modal__close {
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.modal__close:hover {
    color: var(--color-text);
}

.modal__body {
    padding: var(--space-xl);
}

.modal__footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

/* =====================================================
   Toasts
   ===================================================== */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-panel);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 350px;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
}

.toast--success {
    border-left: 4px solid var(--color-success);
}

.toast--error {
    border-left: 4px solid var(--color-danger);
}

.toast--warning {
    border-left: 4px solid var(--color-warning);
}

.toast--info {
    border-left: 4px solid var(--color-info);
}

/* =====================================================
   Profile Page
   ===================================================== */
.profile-header {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--color-panel);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.profile-avatar-large {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.profile-info h2 {
    font-family: var(--font-pixel);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.profile-stats {
    display: flex;
    gap: var(--space-xl);
}

.profile-stat {
    text-align: center;
}

.profile-stat__value {
    font-family: var(--font-pixel);
    font-size: 1.5rem;
    color: var(--color-primary);
}

.profile-stat__label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* =====================================================
   Dialogue Box
   ===================================================== */
.dialogue-box {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 700px;
    background: var(--color-panel);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    padding: var(--space-lg);
    gap: var(--space-lg);
    z-index: 200;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

.dialogue-portrait {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-bg), var(--color-bg-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.npc-avatar {
    font-size: 2.5rem;
}

.dialogue-content {
    flex: 1;
}

.npc-name {
    font-family: var(--font-pixel);
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.dialogue-text {
    font-size: 1rem;
    line-height: 1.6;
}

.dialogue-skip {
    position: absolute;
    bottom: var(--space-sm);
    right: var(--space-lg);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    animation: pulse 1.5s ease-in-out infinite;
}

.dialogue-choices {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.dialogue-choice {
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.dialogue-choice:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* =====================================================
   Confetti & Celebrations
   ===================================================== */
.confetti-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 500;
}

.stamp-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 600;
}

.stamp {
    width: 180px;
    height: 180px;
    border: 6px solid var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(-15deg);
    animation: stampIn 0.5s ease;
    background: rgba(16, 185, 129, 0.1);
}

@keyframes stampIn {
    0% {
        opacity: 0;
        transform: rotate(-15deg) scale(3);
    }
    60% {
        transform: rotate(-15deg) scale(0.9);
    }
    100% {
        transform: rotate(-15deg) scale(1);
    }
}

.stamp-text {
    font-family: var(--font-pixel);
    font-size: 1.25rem;
    color: var(--color-success);
    text-align: center;
}

.floating-emote {
    position: fixed;
    font-size: 2rem;
    pointer-events: none;
    z-index: 450;
    animation: floatUp 2s ease forwards;
}

@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(1.5);
    }
}

/* =====================================================
   Glossary & Tooltips
   ===================================================== */
.glossary-term {
    border-bottom: 2px dashed var(--color-primary);
    cursor: help;
    position: relative;
}

.glossary-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    padding: var(--space-sm);
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.75rem;
    z-index: 100;
    display: none;
}

.glossary-term:hover .glossary-tooltip {
    display: block;
}

/* =====================================================
   PII Warning
   ===================================================== */
.pii-warning {
    padding: var(--space-md);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 768px) {
    .hud {
        padding: 0 var(--space-md);
    }

    .hud-center {
        display: none;
    }

    .nav-bar {
        overflow-x: auto;
        justify-content: flex-start;
        padding: 0 var(--space-sm);
        -webkit-overflow-scrolling: touch;
    }

    .nav-btn {
        font-size: 0.75rem;
        padding: var(--space-sm);
        white-space: nowrap;
    }

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

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .dialogue-box {
        flex-direction: column;
        width: 95%;
    }

    .dialogue-portrait {
        width: 60px;
        height: 60px;
    }

    .profile-header {
        flex-direction: column;
        text-align: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .auth-box {
        padding: var(--space-xl);
    }

    .class-code {
        font-size: 2rem;
        letter-spacing: 4px;
    }
}

/* =====================================================
   Print Styles
   ===================================================== */
@media print {
    .hud, .nav-bar, .dialogue-box, .toast-container {
        display: none !important;
    }

    .content {
        margin-top: 0;
    }
}