:root {
    --primary: #0F172A;
    --secondary: #2563EB;
    --accent: #10B981;
    --bg-light: #F8FAFC;
    --text-main: #334155;
    --text-muted: #64748B;
    --card-bg: #FFFFFF;
}

/* Verrouillage universel anti-débordement */
*, *::before, *::after {
    box-sizing: border-box !important;
    margin: 0;
    padding: 0;
    min-width: 0;
}

html, body {
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: hidden !important;
    position: relative;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-text-size-adjust: 100%;
}

p, span, strong, h1, h2, h3, h4, li, code {
    word-break: break-word;
    overflow-wrap: break-word;
}

code {
    white-space: normal;
    font-size: 0.85em;
}

/* --- HEADER --- */
header {
    background: linear-gradient(135deg, var(--primary) 0%, #1E293B 100%);
    color: white;
    padding: 60px 16px;
    text-align: center;
    width: 100%;
}

.badge {
    background-color: rgba(37, 99, 235, 0.2);
    color: #60A5FA;
    border: 1px solid rgba(96, 165, 250, 0.3);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
    margin-bottom: 18px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: #94A3B8;
    max-width: 700px;
    margin: 0 auto;
}

/* --- LAYOUT & CONTENEUR --- */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 16px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
    width: 100%;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid #E2E8F0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 100%;
}

.card-problem { border-top: 4px solid #EF4444; }
.card-solution { border-top: 4px solid var(--accent); }

h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-title {
    text-align: center;
    margin-bottom: 35px;
    width: 100%;
}

.section-title h2 {
    font-size: 1.9rem;
}

.section-title p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 750px;
    margin: 0 auto;
}

/* --- INFOGRAPHIES & SCHÉMAS --- */
.infographics-container {
    margin-top: 45px;
    margin-bottom: 20px;
    width: 100%;
}

.infographics-grid {
    display: flex;
    flex-direction: column;
    gap: 28px;
    width: 100%;
}

.infographic-card {
    padding: 24px;
    background: #FFFFFF;
    border-radius: 14px;
    border: 1px solid #E2E8F0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.04);
    width: 100%;
}

.infographic-badge {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 12px;
}

.infographic-card h3 {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 6px;
}

.infographic-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 18px;
}

.infographic-media {
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #CBD5E1;
    background-color: #0F172A;
}

.infographic-media img {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- SECTION : COMMENT ÇA MARCHE (ÉTAPES) --- */
.steps-container {
    margin-top: 45px;
    width: 100%;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 35px;
    width: 100%;
    align-items: stretch;
}

.step-card {
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 10px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
}

.step-card-1 { border-top: 4px solid var(--secondary); }
.step-card-2 { border-top: 4px solid #EF4444; }
.step-card-3 { border-top: 4px solid #10B981; }

.step-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

/* Pastille numérique STRICTEMENT relative au header */
.step-number {
    position: static !important;
    width: 30px;
    height: 30px;
    color: #FFFFFF;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
}

.step-bg-1 { background-color: var(--secondary) !important; }
.step-bg-2 { background-color: #EF4444 !important; }
.step-bg-3 { background-color: #10B981 !important; }

.step-header strong {
    color: var(--primary);
    font-size: 1rem;
}

.step-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 10px;
}

.step-card p:last-child {
    margin-bottom: 0;
}

.step-card ul {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.45;
    padding-left: 18px;
    margin: 0;
}

.step-card ul li {
    margin-bottom: 6px;
}

.step-alert {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-top: auto;
    background: #FEE2E2;
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid #FCA5A5;
}

.color-red { color: #DC2626; }
.color-green { color: #16A34A; }
.color-gray { color: #475569; }
.color-orange { color: #D97706; }

/* --- DASHBOARD & SÉCURITÉ --- */
.dashboard-block {
    border-top: 1px solid #E2E8F0;
    padding-top: 30px;
    margin-bottom: 30px;
    width: 100%;
}

.dashboard-title {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dashboard-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 18px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    width: 100%;
}

.dashboard-card {
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    padding: 18px;
    background: #FFFFFF;
    width: 100%;
}

.dashboard-card h4 {
    color: var(--secondary);
    font-size: 0.95rem;
    margin-bottom: 6px;
}

.dashboard-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.45;
    margin: 0;
}

.security-block {
    background: #0F172A;
    color: #E2E8F0;
    border-radius: 12px;
    padding: 26px;
    width: 100%;
}

.security-title {
    color: #FFFFFF;
    font-size: 1.15rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.security-subtitle {
    color: #94A3B8;
    font-size: 0.88rem;
    margin-bottom: 20px;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    width: 100%;
}

.security-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 16px;
    width: 100%;
}

.security-card strong {
    color: #60A5FA;
    display: block;
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.security-card p {
    font-size: 0.82rem;
    color: #CBD5E1;
    line-height: 1.45;
    margin: 0;
}

/* --- GRID 3 FEATURES (SMART SYNC, ETC.) --- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
}

.feature-card {
    width: 100%;
}

.feature-icon {
    font-size: 1.9rem;
    margin-bottom: 12px;
    display: inline-block;
}

.feature-card h3 {
    font-size: 1.15rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- CONTACT & FORMULAIRE --- */
.contact-section {
    margin-top: 50px;
    width: 100%;
}

.contact-section .grid-2 {
    align-items: start;
}

.contact-info { border-top: 4px solid var(--secondary); }
.contact-form-card { border-top: 4px solid var(--primary); }

.info-group {
    margin-top: 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
}

.info-label {
    font-weight: 600;
    color: var(--primary);
}

.image-protected {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.image-protected canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 100%;
}

.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    max-width: 100%;
    padding: 11px 13px;
    border: 1px solid #CBD5E1;
    border-radius: 7px;
    font-family: inherit;
    font-size: 0.95rem;
    background-color: #FFFFFF;
}

.btn-submit {
    background-color: var(--secondary);
    color: #FFFFFF;
    border: none;
    padding: 13px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
}

.btn-submit:hover {
    background-color: #1D4ED8;
}

/* --- FOOTER --- */
footer {
    background-color: var(--primary);
    color: #94A3B8;
    text-align: center;
    padding: 35px 16px;
    margin-top: 70px;
    border-top: 1px solid #1E293B;
    width: 100%;
}

footer strong { color: #FFFFFF; }

/* =========================================================
   RESPONSIVE MOBILE STRICT (CHROME & FIREFOX <= 820px)
   ========================================================= */
@media screen and (max-width: 820px) {
    header {
        padding: 45px 14px;
    }

    h1 {
        font-size: 1.8rem;
    }

    .container {
        padding: 24px 12px !important;
        overflow: hidden !important;
    }

    .grid-2,
    .grid-3,
    .steps-grid,
    .dashboard-grid,
    .security-grid {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        max-width: 100% !important;
        gap: 16px !important;
    }

    .card,
    .step-card,
    .dashboard-card,
    .security-card,
    .feature-card,
    .infographic-card,
    .contact-info,
    .contact-form-card {
        width: 100% !important;
        max-width: 100% !important;
        padding: 18px 14px !important;
    }

    .security-block {
        padding: 20px 14px !important;
    }
}