/* ===========================
   Variables - Style Institutionnel
   =========================== */

:root {
    /* Couleurs institutionnelles sobres */
    --primary-institutional: #003366;
    --primary-dark: #002244;
    --primary-light: #004080;
    --accent-institutional: #0066cc;

    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-tertiary: #6a6a6a;

    --bg-white: #ffffff;
    --bg-light-gray: #f8f9fa;
    --bg-medium-gray: #e9ecef;
    --border-gray: #dee2e6;

    --success-green: #28a745;
    --info-blue: #17a2b8;

    /* Typographie institutionnelle */
    --font-primary: 'Source Sans Pro', 'Segoe UI', Tahoma, sans-serif;
    --font-secondary: 'Roboto', Arial, sans-serif;

    /* Espacements standardisés */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;

    /* Ombres subtiles */
    --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-normal: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-elevated: 0 4px 16px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-white);
    font-size: 16px;
}

/* ===========================
   Container
   =========================== */

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===========================
   Header Institutionnel
   =========================== */

.header-institutional {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-subtle);
}

.header-top-bar {
    background: var(--primary-institutional);
    color: white;
    padding: 0.5rem 0;
    font-size: 0.875rem;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.certifications-mini {
    display: flex;
    gap: var(--space-sm);
}

.cert-badge-mini {
    background: rgba(255, 255, 255, 0.15);
    padding: 0.25rem 0.75rem;
    border-radius: 3px;
    font-size: 0.8125rem;
    font-weight: 500;
}

.contact-info {
    font-size: 0.875rem;
}

.contact-info a {
    color: white;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.header-main {
    padding: var(--space-md) 0;
}

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

.logo-institutional {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-emblem svg {
    display: block;
}

.logo-text-block {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-institutional);
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.nav-institutional {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.2s;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background: var(--primary-institutional);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===========================
   Buttons Institutionnels
   =========================== */

.btn-institutional {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.625rem 1.5rem;
    background: var(--primary-institutional);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: 3px;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}

.btn-institutional:hover {
    background: var(--primary-dark);
}

.btn-institutional-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.875rem 2rem;
    background: var(--primary-institutional);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 3px;
    transition: all 0.2s;
    border: 2px solid var(--primary-institutional);
    cursor: pointer;
}

.btn-institutional-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-normal);
}

.btn-institutional-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.875rem 2rem;
    background: white;
    color: var(--primary-institutional);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 3px;
    border: 2px solid var(--primary-institutional);
    transition: all 0.2s;
    cursor: pointer;
}

.btn-institutional-secondary:hover {
    background: var(--bg-light-gray);
}

.btn-block {
    width: 100%;
}

.btn-link-institutional {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-institutional);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: gap 0.2s;
}

.btn-link-institutional:hover {
    gap: 0.75rem;
}

/* ===========================
   Hero Institutionnel
   =========================== */

.hero-institutional {
    background: linear-gradient(to bottom, var(--bg-light-gray) 0%, white 100%);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--border-gray);
}

.hero-institutional-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.breadcrumb {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.breadcrumb .active {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-institutional-title {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary-institutional);
    margin-bottom: var(--space-md);
}

.hero-institutional-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.hero-stats-institutional {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg) 0;
    margin-bottom: var(--space-lg);
    border-top: 2px solid var(--border-gray);
    border-bottom: 2px solid var(--border-gray);
}

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

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-institutional);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    background: var(--border-gray);
}

.hero-cta-group {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ===========================
   Hero Form Card - Mobile First
   =========================== */

.hero-form-card {
    background: white;
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    box-shadow: var(--shadow-elevated);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-form-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.hero-form-header {
    background: linear-gradient(135deg, var(--primary-institutional) 0%, var(--primary-dark) 100%);
    padding: var(--space-lg);
    text-align: center;
    color: white;
}

.hero-form-header h3 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.hero-form-header p {
    font-size: 0.9375rem;
    opacity: 0.95;
    margin: 0;
}

.hero-form {
    padding: var(--space-lg);
}

.hero-form-group {
    margin-bottom: var(--space-md);
}

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

.hero-form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.hero-form-group input {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-gray);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--bg-white);
}

.hero-form-group input:focus {
    outline: none;
    border-color: var(--primary-institutional);
    box-shadow: 0 0 0 4px rgba(0, 51, 102, 0.1);
    transform: translateY(-1px);
}

.hero-form-group input:valid:not(:placeholder-shown) {
    border-color: var(--success-green);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2328a745' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    background-size: 16px;
    padding-right: 2.5rem;
}

.hero-form-group input:invalid:not(:placeholder-shown):not(:focus) {
    border-color: #dc3545;
}

/* Animation on input */
.hero-form-group {
    position: relative;
}

.hero-form-group input {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-form-group label {
    transition: all 0.2s ease;
}

.hero-form-group input::placeholder {
    color: var(--text-tertiary);
    opacity: 0.7;
}

/* Input hint - Interactive feedback */
.input-hint {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: 0.375rem;
    font-style: italic;
    min-height: 1.2rem;
    transition: all 0.3s ease;
}

.input-hint.show {
    color: var(--primary-institutional);
    font-weight: 600;
}

/* Submit button - Attractive */
.btn-hero-submit {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--success-green) 0%, #20844a 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.0625rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    margin-top: var(--space-md);
    position: relative;
    overflow: hidden;
}

.btn-hero-submit::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-hero-submit:hover::before {
    width: 300px;
    height: 300px;
}

.btn-hero-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
    background: linear-gradient(135deg, #20844a 0%, var(--success-green) 100%);
}

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

.btn-hero-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Subtle pulse animation on load */
@keyframes subtlePulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(40, 167, 69, 0.5);
    }
}

.btn-hero-submit {
    animation: subtlePulse 3s ease-in-out infinite;
}

.btn-hero-submit:hover {
    animation: none;
}

/* Form footer - Trust badge */
.hero-form-footer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: var(--space-md);
    padding: var(--space-sm);
    background: rgba(40, 167, 69, 0.05);
    border-radius: 4px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.hero-form-footer svg {
    flex-shrink: 0;
}

/* Form message */
.hero-form-message {
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

.hero-form-message.success {
    background: #d1f4e0;
    color: #0f5132;
    border: 2px solid var(--success-green);
}

.hero-form-message.error {
    background: #f8d7da;
    color: #842029;
    border: 2px solid #dc3545;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Form benefits */
.hero-form-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding: var(--space-md);
    background: var(--bg-light-gray);
    border-top: 1px solid var(--border-gray);
}

.benefit-item {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    text-align: center;
    font-weight: 500;
}

/* Loading animation */
.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spinner .path {
    stroke: white;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes dash {
    0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

/* Mobile First - Responsive */
@media (max-width: 768px) {
    .hero-form-row {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .hero-form-benefits {
        grid-template-columns: 1fr;
        text-align: left;
    }

    .benefit-item {
        text-align: left;
    }

    .hero-form-header h3 {
        font-size: 1.25rem;
    }

    .hero-form-card {
        margin-top: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .hero-form {
        padding: var(--space-md);
    }

    .hero-form-header {
        padding: var(--space-md);
    }

    .btn-hero-submit {
        font-size: 1rem;
        padding: 0.875rem 1.25rem;
    }
}

/* ===========================
   Partners Band
   =========================== */

.partners-band {
    background: white;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-gray);
}

.partners-label {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.partners-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.partner-logo {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--border-gray);
    border-radius: 3px;
    background: var(--bg-light-gray);
}

/* ===========================
   Sections Institutionnelles
   =========================== */

.section-institutional {
    padding: var(--space-xl) 0;
}

.section-institutional-alt {
    background: var(--bg-light-gray);
    padding: var(--space-xl) 0;
}

.section-header-institutional {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-institutional);
    margin-bottom: var(--space-sm);
}

.section-title-institutional {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-institutional);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.section-intro {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.content-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.content-block-institutional h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-md);
}

.content-block-institutional p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.list-institutional {
    list-style: none;
    padding: 0;
}

.list-institutional li {
    padding-left: 1.75rem;
    margin-bottom: var(--space-sm);
    position: relative;
    color: var(--text-secondary);
}

.list-institutional li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-institutional);
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1;
}

/* ===========================
   Eligibility Section
   =========================== */

.eligibility-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.eligibility-card {
    background: white;
    border: 2px solid var(--border-gray);
    border-radius: 4px;
    padding: var(--space-lg);
    transition: border-color 0.2s;
}

.eligibility-card:hover {
    border-color: var(--primary-institutional);
}

.eligibility-icon {
    margin-bottom: var(--space-md);
}

.eligibility-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-sm);
}

.eligibility-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    font-size: 0.9375rem;
}

.eligibility-criteria {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.criteria-item {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    padding-left: 1.5rem;
    position: relative;
}

.criteria-item:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-institutional);
}

.cta-block-institutional {
    text-align: center;
    padding: var(--space-xl);
    background: white;
    border: 2px solid var(--primary-institutional);
    border-radius: 4px;
}

.cta-block-institutional h3 {
    font-size: 1.5rem;
    color: var(--primary-institutional);
    margin-bottom: var(--space-sm);
}

.cta-block-institutional p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* ===========================
   Calculator Section
   =========================== */

.calculator-section {
    background: var(--bg-light-gray);
}

.calculator-container {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--space-xl);
    background: white;
    border: 2px solid var(--border-gray);
    border-radius: 4px;
    overflow: hidden;
}

.calculator-inputs,
.calculator-results {
    padding: var(--space-lg);
}

.calculator-inputs {
    background: var(--bg-light-gray);
    border-right: 2px solid var(--border-gray);
}

.calculator-inputs h3,
.calculator-results h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-lg);
}

.input-group-institutional {
    margin-bottom: var(--space-lg);
}

.input-group-institutional label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.input-group-institutional input[type="number"],
.input-group-institutional input[type="range"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-gray);
    border-radius: 3px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.input-group-institutional input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-institutional);
}

.input-group-institutional input[type="range"] {
    padding: 0;
    height: 6px;
    background: var(--border-gray);
    border: none;
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.range-labels #cee-value {
    font-weight: 700;
    color: var(--primary-institutional);
}

.input-helper {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    font-style: italic;
}

.result-card-main {
    background: var(--primary-institutional);
    color: white;
    padding: var(--space-lg);
    border-radius: 4px;
    text-align: center;
    margin-bottom: var(--space-lg);
}

.result-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.9;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.result-value-main {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.result-sublabel {
    font-size: 0.9375rem;
    opacity: 0.9;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.result-card {
    background: var(--bg-light-gray);
    padding: var(--space-md);
    border-radius: 4px;
    border: 1px solid var(--border-gray);
}

.result-card.highlight {
    background: #fffbeb;
    border-color: #fbbf24;
}

.result-card .result-label {
    color: var(--text-tertiary);
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-institutional);
}

.result-value.green {
    color: var(--success-green);
}

.result-chart {
    background: var(--bg-light-gray);
    padding: var(--space-lg);
    border-radius: 4px;
    margin-bottom: var(--space-lg);
}

.result-chart h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    height: 150px;
    margin-bottom: var(--space-md);
}

.chart-bar {
    flex: 1;
    background: var(--primary-institutional);
    border-radius: 3px 3px 0 0;
    position: relative;
    transition: background 0.2s;
}

.chart-bar:hover {
    background: var(--accent-institutional);
}

.chart-bar-label {
    position: absolute;
    bottom: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    white-space: nowrap;
}

.chart-total {
    font-size: 1rem;
    color: var(--text-primary);
    padding-top: var(--space-md);
    border-top: 2px solid var(--border-gray);
}

.chart-total span {
    font-weight: 700;
    color: var(--success-green);
    font-size: 1.25rem;
}

.result-cta {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 2px solid var(--border-gray);
}

.result-cta p {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-md);
}

/* ===========================
   Timeline
   =========================== */

.timeline-institutional {
    position: relative;
    padding-left: 3rem;
}

.timeline-institutional:before {
    content: '';
    position: absolute;
    left: 1.125rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-gray);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-xl);
}

.timeline-marker {
    position: absolute;
    left: -3rem;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-institutional);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    z-index: 1;
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-sm);
}

.timeline-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.timeline-details {
    list-style: none;
    padding: var(--space-md);
    background: var(--bg-light-gray);
    border-left: 3px solid var(--primary-institutional);
    border-radius: 3px;
}

.timeline-details li {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.timeline-details li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-institutional);
}

/* ===========================
   Contact Form Institutionnel
   =========================== */

.contact-container-institutional {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
    background: white;
    border: 2px solid var(--border-gray);
    border-radius: 4px;
    overflow: hidden;
}

.contact-info-side {
    background: var(--bg-light-gray);
    padding: var(--space-xl);
    border-right: 2px solid var(--border-gray);
}

.contact-info-side h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-md);
}

.contact-info-side > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.contact-benefits {
    margin-bottom: var(--space-xl);
}

.contact-benefit-item {
    display: flex;
    align-items: start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.contact-alternative {
    padding: var(--space-md);
    background: white;
    border: 1px solid var(--border-gray);
    border-radius: 3px;
}

.contact-alternative h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-sm);
}

.contact-alternative p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.contact-form-side {
    padding: var(--space-xl);
}

.form-institutional {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-institutional);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--border-gray);
}

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

.form-group-institutional {
    display: flex;
    flex-direction: column;
}

.form-group-institutional label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.form-group-institutional input,
.form-group-institutional select,
.form-group-institutional textarea {
    padding: 0.75rem;
    border: 2px solid var(--border-gray);
    border-radius: 3px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
    background: white;
}

.form-group-institutional input:focus,
.form-group-institutional select:focus,
.form-group-institutional textarea:focus {
    outline: none;
    border-color: var(--primary-institutional);
}

.form-checkbox-institutional {
    display: flex;
    align-items: start;
    gap: var(--space-sm);
}

.form-checkbox-institutional label {
    display: flex;
    align-items: start;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.form-checkbox-institutional input[type="checkbox"] {
    margin-top: 0.25rem;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-checkbox-institutional a {
    color: var(--accent-institutional);
    text-decoration: underline;
}

.form-notice {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: -0.5rem;
    font-style: italic;
}

.form-message-institutional {
    padding: var(--space-md);
    border-radius: 3px;
    text-align: center;
    font-weight: 500;
}

.form-message-institutional.success {
    background: #d1f4e0;
    color: #0f5132;
    border: 2px solid var(--success-green);
}

.form-message-institutional.error {
    background: #f8d7da;
    color: #842029;
    border: 2px solid #dc3545;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spinner .path {
    stroke: white;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes dash {
    0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

/* ===========================
   Footer Institutionnel
   =========================== */

.footer-institutional {
    background: var(--primary-institutional);
    color: white;
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-content-institutional {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo-institutional {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.logo-emblem-small svg {
    display: block;
}

.footer-logo-title {
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.2;
}

.footer-logo-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
}

.footer-description {
    font-size: 0.9375rem;
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.footer-certifs {
    display: flex;
    gap: var(--space-sm);
}

.cert-badge-footer {
    background: rgba(255, 255, 255, 0.15);
    padding: 0.375rem 0.875rem;
    border-radius: 3px;
    font-size: 0.8125rem;
    font-weight: 600;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-col p {
    font-size: 0.9375rem;
    opacity: 0.9;
    margin-bottom: var(--space-sm);
}

.footer-bottom-institutional {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.875rem;
    opacity: 0.9;
}

.footer-bottom-right {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.footer-bottom-right a {
    color: white;
    text-decoration: none;
    transition: opacity 0.2s;
}

.footer-bottom-right a:hover {
    opacity: 1;
    text-decoration: underline;
}

.separator {
    opacity: 0.5;
}

/* ===========================
   Exit Intent Popup
   =========================== */

.exit-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.exit-popup-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(3px);
}

.exit-popup-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    border-radius: 4px;
    max-width: 600px;
    width: 90%;
    box-shadow: var(--shadow-elevated);
}

.exit-popup-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--bg-light-gray);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.exit-popup-close:hover {
    background: var(--border-gray);
}

.exit-popup-body {
    padding: var(--space-xl);
    text-align: center;
}

.exit-popup-icon {
    margin: 0 auto var(--space-lg);
}

.exit-popup-body h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-institutional);
    margin-bottom: var(--space-md);
}

.exit-popup-body > p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.exit-popup-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    text-align: left;
}

.exit-benefit {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.exit-popup-form {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.exit-popup-form input {
    flex: 1;
    padding: 0.875rem;
    border: 2px solid var(--border-gray);
    border-radius: 3px;
    font-size: 1rem;
}

.exit-popup-form input:focus {
    outline: none;
    border-color: var(--primary-institutional);
}

.exit-popup-notice {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 1024px) {
    .hero-institutional-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .hero-right {
        order: -1; /* Form appears first on mobile */
    }

    .hero-form-card {
        max-width: 600px;
        margin: 0 auto;
    }

    .content-grid-2 {
        grid-template-columns: 1fr;
    }

    .calculator-container {
        grid-template-columns: 1fr;
    }

    .calculator-inputs {
        border-right: none;
        border-bottom: 2px solid var(--border-gray);
    }

    .contact-container-institutional {
        grid-template-columns: 1fr;
    }

    .contact-info-side {
        border-right: none;
        border-bottom: 2px solid var(--border-gray);
    }

    .footer-content-institutional {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* Show mobile menu toggle */
    .mobile-menu-toggle {
        display: flex;
    }

    /* Hide desktop navigation by default */
    .nav-institutional {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-xl);
        z-index: 1000;
        padding: var(--space-xl);
        animation: slideInRight 0.3s ease-out;
    }

    .nav-institutional.active {
        display: flex;
    }

    .nav-link {
        font-size: 1.25rem;
        padding: var(--space-sm) 0;
        width: 100%;
        text-align: center;
    }

    .btn-institutional {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    @keyframes slideInRight {
        from {
            opacity: 0;
            transform: translateX(100%);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    /* Header adjustments for mobile */
    .header-top-bar {
        padding: 0.4rem 0;
    }

    .top-bar-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        font-size: 0.75rem;
    }

    .certifications-mini {
        justify-content: center;
    }

    .header-main {
        padding: var(--space-sm) 0;
    }

    .logo-title {
        font-size: 1rem;
    }

    .logo-subtitle {
        font-size: 0.75rem;
    }

    .logo-emblem img {
        width: 40px;
        height: 40px;
    }

    .hero-institutional-title {
        font-size: 1.75rem;
    }

    .hero-stats-institutional {
        flex-direction: column;
        gap: var(--space-md);
    }

    .stat-divider {
        display: none;
    }

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

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

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

    .footer-content-institutional {
        grid-template-columns: 1fr;
    }

    .footer-bottom-institutional {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --space-xl: 2.5rem;
    }

    .hero-institutional-title {
        font-size: 1.5rem;
    }

    .section-title-institutional {
        font-size: 1.5rem;
    }

    .exit-popup-content {
        width: 95%;
    }
}