/* ============================================================
   ECOLEARNING & ETHIC'IA — Lead Magnet
   Charte graphique Learning Gate
   Polices : Inter (Google Fonts) — fallback : Aptos, system-ui
   ============================================================ */

/* --- Variables CSS (charte Learning Gate) -------------------- */
:root {
    /* Fond principal */
    --bg-primary:    #F4F8FB;
    --bg-secondary:  #EBF0F3;
    --bg-card:       #FFFFFF;

    /* Brand ECOLEARNING (vert lime) */
    --color-primary:     #A8CF5B;
    --color-primary-dim: #8FB53E;
    --color-primary-light: #D7F47D;

    /* Brand ETHIC'IA (bleu royal) */
    --color-secondary:   #2A57B4;
    --color-secondary-dim: #1E3F8A;
    --color-secondary-light: #95AAD7;

    /* Texte */
    --text-primary:   #333333;
    --text-secondary: #5E6D7A;
    --text-inverse:  #FFFFFF;

    /* États */
    --color-error:    #E74C3C;
    --color-success:  #27AE60;
    --color-warning:  #E67E22;

    /* Ombres (flat design, ombres douces) */
    --shadow-card:    0 4px 20px rgba(42, 87, 180, 0.10);
    --shadow-hover:    0 8px 32px rgba(42, 87, 180, 0.18);
    --shadow-focus:   0 0 0 3px rgba(168, 207, 91, 0.50);

    /* Bordures */
    --border-light:   #E4EBF2;
    --border-focus:   #A8CF5B;
    --border-radius:  16px;
    --border-radius-sm: 10px;

    /* Transitions */
    --transition-fast:   150ms ease;
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Aptos', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* --- Typographie -------------------------------------------- */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 4vw, 1.875rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.375rem); }

p { max-width: 65ch; }

/* --- Layout principal --------------------------------------- */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* En-tête : logos des deux labels */
.app-header {
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(42, 87, 180, 0.06);
}

.header-logos {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.logo-ecolearning {
    color: var(--color-primary-dim);
}

.logo-ethicia {
    color: var(--color-secondary);
}

.logo-separator {
    width: 1px;
    height: 28px;
    background: var(--border-light);
}

/* Zone principale */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

/* --- Cartes / écrans ---------------------------------------- */
.screen {
    width: 100%;
    max-width: 680px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
    padding: clamp(2rem, 6vw, 3.5rem);
    display: none;
    flex-direction: column;
    gap: 2rem;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.screen.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

/* --- Écran d'accueil (Intro) -------------------------------- */
.screen-intro {
    text-align: center;
    align-items: center;
}

.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(168, 207, 91, 0.15), rgba(42, 87, 180, 0.10));
    color: var(--color-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    border: 1px solid rgba(42, 87, 180, 0.15);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.intro-title {
    margin-top: 0.25rem;
}

.intro-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-top: 0.5rem;
}

.intro-description {
    color: var(--text-secondary);
    text-align: left;
    background: var(--bg-primary);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    padding: 1rem 1.25rem;
    font-size: 0.95rem;
}

.intro-stats {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-primary-dim);
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* --- Bouton principal --------------------------------------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background: var(--color-secondary);
    color: var(--text-inverse);
    border: none;
    border-radius: 100px;
    padding: 1rem 2.25rem;
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--transition-fast),
                transform var(--transition-fast),
                box-shadow var(--transition-fast);
    letter-spacing: 0.01em;
    text-decoration: none;
}

.btn-primary:hover {
    background: var(--color-secondary-dim);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(42, 87, 180, 0.30);
}

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

.btn-primary:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

.btn-primary svg {
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.btn-primary:hover svg {
    transform: translateX(3px);
}

/* --- Barre de progression ----------------------------------- */
.progress-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.progress-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 100px;
    width: 0%;
    transition: width var(--transition-smooth);
    position: relative;
}

/* Animation shimmer sur la barre */
.progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 30%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% { opacity: 0; transform: translateX(-100%); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateX(300%); }
}

/* --- Question ----------------------------------------------- */
.question-header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.question-theme {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: rgba(42, 87, 180, 0.08);
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
    width: fit-content;
}

.question-theme-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-secondary);
    flex-shrink: 0;
}

.question-text {
    font-size: clamp(1.05rem, 3vw, 1.25rem);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.45;
    text-align: left;
}

/* --- Cartes de réponse -------------------------------------- */
.answers-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

@media (min-width: 540px) {
    .answers-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.answer-card {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius);
    padding: 1.1rem 1.25rem;
    cursor: pointer;
    transition: border-color var(--transition-fast),
                background var(--transition-fast),
                box-shadow var(--transition-fast),
                transform var(--transition-fast);
    text-align: left;
    font-family: inherit;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
}

.answer-card:hover {
    border-color: var(--color-primary);
    background: rgba(168, 207, 91, 0.04);
    box-shadow: 0 4px 16px rgba(168, 207, 91, 0.15);
    transform: translateY(-2px);
}

.answer-card:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.answer-card.selected {
    border-color: var(--color-primary);
    background: rgba(168, 207, 91, 0.08);
    box-shadow: 0 4px 20px rgba(168, 207, 91, 0.20);
}

.answer-card.selected .answer-letter {
    background: var(--color-primary);
    color: var(--text-primary);
}

.answer-card.selected .answer-label {
    color: var(--color-primary-dim);
    font-weight: 600;
}

.answer-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 10px;
    background: var(--bg-secondary);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.answer-content {
    flex: 1;
}

.answer-label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    transition: color var(--transition-fast), font-weight var(--transition-fast);
}

.answer-hint {
    font-size: 0.72rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
    display: none; /*，可以通过 data-hint 属性启用 */
}

/* --- Bouton de navigation (question suivante) ------------- */
.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--color-secondary);
    color: var(--text-inverse);
    border: none;
    border-radius: 100px;
    padding: 0.8rem 1.75rem;
    font-size: 0.9rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
    letter-spacing: 0.01em;
    margin-top: 0.5rem;
    width: fit-content;
    align-self: flex-end;
}

.nav-btn:hover {
    background: var(--color-secondary-dim);
    transform: translateY(-1px);
}

.nav-btn:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

.nav-btn:disabled {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

/* --- Écran de résultat -------------------------------------- */
.result-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.result-score {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
}

.result-max {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
    vertical-align: baseline;
}

.result-level-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.result-level-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

.result-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    text-align: center;
    max-width: 50ch;
}

.result-divider {
    width: 100%;
    height: 1px;
    background: var(--border-light);
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.result-cta {
    text-align: center;
    background: linear-gradient(135deg, rgba(168, 207, 91, 0.10), rgba(42, 87, 180, 0.08));
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    padding: 1.25rem;
}

.result-cta-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.result-cta-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* --- Écran de formulaire lead ------------------------------ */
.form-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.form-title { color: var(--text-primary); }

.form-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-subtitle em {
    font-style: normal;
    font-weight: 600;
    color: var(--color-secondary);
}

.form-body {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.form-label span[aria-hidden] {
    color: var(--color-error);
    margin-left: 2px;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-card);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
}

.form-input::placeholder { color: #AAB4BE; }

.form-input:hover { border-color: #C8D5E3; }

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(168, 207, 91, 0.25);
}

.form-input.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}

.form-error {
    font-size: 0.75rem;
    color: var(--color-error);
    display: none;
    align-items: center;
    gap: 0.3rem;
}

.form-error.visible { display: flex; }

/* Honeypot anti-spam */
.form-honeypot { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

.form-footer {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    margin-top: 0.5rem;
}

.form-privacy {
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 45ch;
}

.form-privacy a {
    color: var(--color-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* --- Écran rapport complet --------------------------------- */
.report-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.report-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.25rem;
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.report-table th {
    background: var(--bg-primary);
    padding: 0.6rem 0.75rem;
    text-align: left;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    border-bottom: 2px solid var(--border-light);
}

.report-table td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    vertical-align: middle;
}

.report-table tr:last-child td { border-bottom: none; }

.report-table tr:nth-child(even) td { background: rgba(244, 248, 251, 0.5); }

.score-cell {
    font-weight: 700;
    text-align: center;
    width: 52px;
}

.score-good { color: var(--color-success); }
.score-mid  { color: var(--color-warning); }
.score-low { color: var(--color-error); }

.report-divider {
    width: 100%;
    height: 1px;
    background: var(--border-light);
}

.report-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.85rem 1.1rem;
}

.report-total-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.report-total-value {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--color-primary-dim);
}

.report-actions {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    align-items: center;
}

.report-message {
    text-align: center;
    background: linear-gradient(135deg, rgba(168, 207, 91, 0.12), rgba(42, 87, 180, 0.08));
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.report-message strong {
    color: var(--color-secondary);
    font-weight: 700;
}

.report-message em {
    font-style: normal;
    font-weight: 700;
    color: var(--text-primary);
}

/* --- Notifications toast ------------------------------------ */
.toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    background: var(--text-primary);
    color: var(--text-inverse);
    padding: 0.85rem 1.5rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    transition: transform var(--transition-smooth);
    z-index: 9999;
    pointer-events: none;
    white-space: nowrap;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* --- Loader ------------------------------------------------- */
.loader {
    display: none;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    justify-content: center;
    margin-top: 0.5rem;
}

.loader.active { display: flex; }

.loader-spinner {
    width: 18px;
    height: 18px;
    border: 2.5px solid var(--border-light);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    flex-shrink: 0;
}

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

/* --- Animations d'entrée ----------------------------------- */
@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-slide-up {
    animation: fadeSlideUp var(--transition-smooth) forwards;
}

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* --- Accessibilité ----------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !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) {
    .app-header {
        padding: 1rem 1.25rem;
    }

    .main-content {
        padding: 1.25rem 0.75rem;
    }

    .screen {
        border-radius: var(--border-radius-sm);
        padding: 1.5rem 1.25rem;
    }

    .header-logos {
        gap: 0.75rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }
}