/* PharmaLink - Styles */
/* Design moderne, clair et accessible avec mode sombre */

:root {
    /* Mode clair (par défaut) */
    --primary-color: #00875A;
    --primary-dark: #006644;
    --primary-light: #00A86B;
    --secondary-color: #2C3E50;
    --accent-color: #F5A623;
    --background: #FFFFFF;
    --background-alt: #F7F9FC;
    --text-color: #1A1A1A;
    --text-light: #5A5A5A;
    --white: #FFFFFF;
    --border-color: #E5E7EB;
    --success-color: #00875A;
    --error-color: #DC3545;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

/* Mode sombre */
[data-theme="dark"] {
    --primary-color: #00C781;
    --primary-dark: #00A86B;
    --primary-light: #00E896;
    --secondary-color: #E8ECF0;
    --background: #1A1D23;
    --background-alt: #242830;
    --text-color: #F0F2F5;
    --text-light: #A0A8B4;
    --white: #1A1D23;
    --border-color: #3A3F4A;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
    transition: background-color 0.3s, color 0.3s;
}

/* Classe pour masquer visuellement mais garder accessible (RGAA) */
.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;
}

/* Skip Navigation Link - Accessibilité */
.skip-link {
    position: absolute;
    top: -50px;
    left: 20px;
    background: var(--primary-color);
    color: #FFFFFF;
    padding: 12px 20px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 6px 6px;
    z-index: 1000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* Focus visible */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    background-color: var(--background);
    box-shadow: 0 1px 3px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 52px;
    width: auto;
}

.logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 15px;
}

nav a:hover {
    color: var(--primary-color);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: background-color 0.3s, transform 0.2s;
}

.theme-toggle:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

/* Mode clair : afficher soleil */
:root:not([data-theme="dark"]) .theme-toggle .icon-sun {
    display: block;
}

/* Mode sombre : afficher lune */
[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background-color: var(--primary-color);
    color: #FFFFFF;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 15px;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.btn-large {
    padding: 16px 32px;
    font-size: 17px;
    border-radius: 10px;
}

/* Bouton dans la navigation - centrage vertical */
nav .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #FFFFFF;
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

.hero .btn-primary {
    background-color: #FFFFFF;
    color: var(--primary-color);
}

.hero .btn-primary:hover {
    background-color: #F0F0F0;
    color: var(--primary-dark);
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--background-alt);
    transition: background-color 0.3s;
}

.about h3 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 16px;
    color: var(--secondary-color);
}

.about > .container > p {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
    color: var(--text-light);
    font-size: 1.1rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature {
    background-color: var(--background);
    padding: 40px 32px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature h4 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--secondary-color);
}

.feature p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Study Section */
.study {
    padding: 100px 0;
    background-color: var(--background);
    transition: background-color 0.3s;
}

.study h3 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 16px;
    color: var(--secondary-color);
}

.study > .container > p {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
    color: var(--text-light);
    font-size: 1.1rem;
}

.study-benefits {
    background-color: var(--background-alt);
    padding: 40px;
    border-radius: 16px;
    max-width: 600px;
    margin: 0 auto 50px;
    transition: background-color 0.3s;
}

.study-benefits h4 {
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.study-benefits ul {
    list-style: none;
    padding: 0;
}

.study-benefits li {
    padding: 12px 0;
    padding-left: 32px;
    position: relative;
    color: var(--text-color);
}

.study-benefits li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.cta-box {
    text-align: center;
    padding: 50px 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #FFFFFF;
    border-radius: 16px;
    max-width: 550px;
    margin: 0 auto;
}

.cta-box p {
    margin-bottom: 24px;
    font-size: 1.2rem;
}

.cta-box .btn-primary {
    background-color: #FFFFFF;
    color: var(--primary-color);
}

.cta-box .btn-primary:hover {
    background-color: #F0F0F0;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--background-alt);
    text-align: center;
    transition: background-color 0.3s;
}

.contact h3 {
    margin-bottom: 16px;
    color: var(--secondary-color);
    font-size: 1.6rem;
}

.contact a {
    color: var(--primary-color);
    font-weight: 500;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: #FFFFFF;
    padding: 32px 0;
    text-align: center;
}

[data-theme="dark"] footer {
    background-color: #0D1117;
}

/* Form Page */
.form-page {
    padding: 50px 0;
    background-color: var(--background-alt);
    min-height: calc(100vh - 200px);
    transition: background-color 0.3s;
}

.form-header {
    text-align: center;
    margin-bottom: 50px;
}

.form-header h2 {
    color: var(--secondary-color);
    margin-bottom: 16px;
    font-size: 2rem;
}

.form-header p {
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.05rem;
}

.form-time {
    margin-top: 16px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
}

.interview-form {
    max-width: 720px;
    margin: 0 auto;
    background-color: var(--background);
    padding: 48px;
    border-radius: 16px;
    box-shadow: 0 4px 24px var(--shadow);
    transition: background-color 0.3s;
}

fieldset {
    border: none;
    margin-bottom: 48px;
    padding: 0;
}

legend {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
    width: 100%;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--background);
    color: var(--text-color);
    transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 135, 90, 0.15);
}

.checkbox-fieldset {
    border: none;
    padding: 0;
    margin: 0 0 24px 0;
}

.checkbox-group-label {
    display: block;
    margin-bottom: 12px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 1rem;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: background-color 0.3s, border-color 0.3s;
    color: var(--text-color);
}

.checkbox-label:hover {
    background-color: var(--background-alt);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.form-submit {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.privacy-note {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Success Message */
.success-message {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    background-color: var(--background);
    padding: 60px 40px;
    border-radius: 16px;
    box-shadow: 0 4px 24px var(--shadow);
    transition: background-color 0.3s;
}

.success-message h3 {
    color: var(--success-color);
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.success-message p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.success-message .btn-primary {
    margin-top: 24px;
}

/* Submission Error Message */
.submission-error {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    background-color: var(--background);
    padding: 60px 40px;
    border-radius: 16px;
    box-shadow: 0 4px 24px var(--shadow);
    border: 2px solid var(--error-color);
    transition: background-color 0.3s;
}

.submission-error h2 {
    color: var(--error-color);
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.submission-error p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.submission-error a {
    color: var(--primary-color);
}

.submission-error .btn-primary {
    margin-top: 24px;
}

/* ===========================================
   RESPONSIVE DESIGN
   - Mobile: < 480px
   - Tablette portrait: 480px - 768px
   - Tablette paysage: 768px - 1024px
   - Desktop: > 1024px
   =========================================== */

/* Grande tablette et petit desktop (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }

    .hero h2 {
        font-size: 2.4rem;
    }

    .about, .study {
        padding: 80px 0;
    }

    .features {
        gap: 24px;
    }

    .feature {
        padding: 32px 24px;
    }
}

/* Tablette portrait (480px - 768px) */
@media (max-width: 768px) {
    body {
        font-size: 15px;
    }

    .container {
        padding: 0 16px;
    }

    /* Header responsive */
    header .container {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 12px 16px;
    }

    .logo img {
        height: 44px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
        width: 100%;
    }

    nav a {
        font-size: 14px;
    }

    nav .btn-primary {
        padding: 10px 20px;
        font-size: 14px;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    /* Hero responsive */
    .hero {
        padding: 60px 0;
    }

    .hero h2 {
        font-size: 1.8rem;
        line-height: 1.3;
    }

    .hero p {
        font-size: 1rem;
        margin-bottom: 24px;
    }

    .btn-large {
        padding: 14px 28px;
        font-size: 16px;
        width: 100%;
        max-width: 300px;
    }

    /* Sections responsive */
    .about, .study {
        padding: 50px 0;
    }

    .about h3, .study h3 {
        font-size: 1.6rem;
    }

    .about > .container > p,
    .study > .container > p {
        font-size: 1rem;
        margin-bottom: 40px;
    }

    /* Features grid responsive */
    .features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature {
        padding: 28px 24px;
    }

    .feature-icon {
        font-size: 2.5rem;
    }

    .feature h4 {
        font-size: 1.2rem;
    }

    /* Study benefits responsive */
    .study-benefits {
        padding: 28px 24px;
        margin-bottom: 40px;
    }

    .cta-box {
        padding: 40px 24px;
        margin: 0 8px;
    }

    .cta-box p {
        font-size: 1.1rem;
    }

    /* Contact responsive */
    .contact {
        padding: 50px 0;
    }

    /* Form page responsive */
    .form-page {
        padding: 30px 0;
    }

    .form-header {
        margin-bottom: 30px;
    }

    .form-header h2 {
        font-size: 1.6rem;
    }

    .interview-form {
        padding: 24px;
        margin: 0 8px;
        border-radius: 12px;
    }

    fieldset {
        margin-bottom: 32px;
    }

    legend {
        font-size: 1.1rem;
        margin-bottom: 20px;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 14px;
        font-size: 16px; /* Empêche le zoom auto sur iOS */
    }

    .checkbox-label {
        padding: 12px 14px;
    }

    /* Footer responsive */
    footer {
        padding: 24px 0;
    }

    /* Success message responsive */
    .success-message {
        padding: 40px 24px;
        margin: 0 8px;
    }

    .success-message h3 {
        font-size: 1.5rem;
    }
}

/* Mobile (< 480px) */
@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .container {
        padding: 0 12px;
    }

    /* Header mobile */
    header .container {
        padding: 10px 12px;
    }

    .logo img {
        height: 40px;
    }

    nav {
        gap: 8px;
    }

    nav a:not(.btn-primary) {
        font-size: 13px;
    }

    nav .btn-primary {
        padding: 8px 16px;
        font-size: 13px;
        order: 3;
    }

    .theme-toggle {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }

    /* Hero mobile */
    .hero {
        padding: 40px 0;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .btn-large {
        padding: 12px 24px;
        font-size: 15px;
        width: 100%;
    }

    /* Sections mobile */
    .about, .study {
        padding: 40px 0;
    }

    .about h3, .study h3 {
        font-size: 1.4rem;
    }

    .about > .container > p,
    .study > .container > p {
        font-size: 0.95rem;
    }

    /* Features mobile */
    .feature {
        padding: 24px 20px;
    }

    .feature-icon {
        font-size: 2rem;
    }

    .feature h4 {
        font-size: 1.1rem;
    }

    .feature p {
        font-size: 0.95rem;
    }

    /* Study benefits mobile */
    .study-benefits {
        padding: 24px 20px;
    }

    .study-benefits h4 {
        font-size: 1.1rem;
    }

    .study-benefits li {
        font-size: 0.95rem;
        padding-left: 28px;
    }

    .cta-box {
        padding: 32px 20px;
    }

    .cta-box p {
        font-size: 1rem;
    }

    /* Form mobile */
    .form-header h2 {
        font-size: 1.4rem;
    }

    .form-header p {
        font-size: 0.95rem;
    }

    .interview-form {
        padding: 20px 16px;
        margin: 0 4px;
    }

    legend {
        font-size: 1rem;
    }

    .form-group label {
        font-size: 0.95rem;
    }

    .checkbox-group-label {
        font-size: 0.95rem;
    }

    .checkbox-label {
        padding: 10px 12px;
        font-size: 0.95rem;
        gap: 10px;
    }

    .checkbox-label input[type="checkbox"] {
        width: 18px;
        height: 18px;
    }

    .form-submit {
        padding-top: 24px;
    }

    .form-submit .btn-primary {
        width: 100%;
    }

    .privacy-note {
        font-size: 0.85rem;
    }

    /* Success message mobile */
    .success-message {
        padding: 32px 20px;
    }

    .success-message h3 {
        font-size: 1.3rem;
    }

    .success-message p {
        font-size: 0.95rem;
    }

    /* Contact mobile */
    .contact h3 {
        font-size: 1.3rem;
    }
}

/* Amélioration tactile pour tous les appareils mobiles */
@media (hover: none) and (pointer: coarse) {
    /* Cibles tactiles plus grandes */
    .btn-primary {
        min-height: 48px;
        min-width: 48px;
    }

    nav a {
        padding: 8px 4px;
    }

    .checkbox-label {
        min-height: 48px;
    }

    /* Désactiver les effets hover sur tactile */
    .feature:hover {
        transform: none;
    }

    .btn-primary:hover {
        transform: none;
    }
}

/* Mode paysage sur mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 30px 0;
    }

    .hero h2 {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .hero p {
        margin-bottom: 16px;
    }
}

/* Loading State */
.btn-primary.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-primary.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid #FFFFFF;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===========================================
   ACCESSIBILITÉ RGAA
   =========================================== */

/* Réduction des animations pour les utilisateurs sensibles (RGAA 13.8) */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .btn-primary:hover,
    .feature:hover {
        transform: none !important;
    }
}

/* Mode contraste élevé (RGAA 3.2) */
@media (prefers-contrast: more) {
    :root {
        --primary-color: #006644;
        --text-color: #000000;
        --text-light: #333333;
        --background: #FFFFFF;
        --background-alt: #F0F0F0;
        --border-color: #000000;
    }

    [data-theme="dark"] {
        --primary-color: #00FF9F;
        --text-color: #FFFFFF;
        --text-light: #E0E0E0;
        --background: #000000;
        --background-alt: #1A1A1A;
        --border-color: #FFFFFF;
    }

    .btn-primary {
        border: 2px solid currentColor;
    }

    a {
        text-decoration: underline;
    }
}

/* Style pour les champs en erreur (RGAA 11.10) */
.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
}

/* Message d'erreur (RGAA 11.10) */
.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.error-message::before {
    content: "⚠";
    font-size: 1rem;
}

/* Indicateur de champ obligatoire (RGAA 11.10) */
.form-group label span[aria-hidden="true"] {
    color: var(--error-color);
    font-weight: 700;
}