/* ===========================================================
   Études de cas — feuille de style partagée (portfolio Yann Provenza)
   =========================================================== */

:root {
    --navy: #0d123a;
    --lavender: #e1e1fa;
    --violet: #7879b9;
    --white: #ffffff;
}

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

body {
    font-family: "Poppins", sans-serif;
    background-color: var(--lavender);
    color: var(--navy);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.cs-wrap {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 32px 120px;
}

/* ---- Barre de retour ---- */
.cs-topbar { padding: 32px 0 0; }

.cs-back {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--navy);
    transition: opacity .25s ease;
}
.cs-back:hover { opacity: .6; }
.cs-back .arrow { font-size: 18px; line-height: 1; }

/* ---- Hero ---- */
.cs-hero { padding: 60px 0 50px; }

.cs-eyebrow {
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--violet);
    font-weight: 600;
    margin-bottom: 16px;
}

.cs-title {
    font-size: 72px;
    line-height: 1.05;
    font-weight: 800;
    letter-spacing: -2px;
}

/* ---- Bloc intro : texte + image côte à côte ---- */
.cs-intro {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: start;
}

.cs-intro-media .cs-shot {
    aspect-ratio: 4 / 5;
    position: sticky;
    top: 32px;
}

/* ---- Sections ---- */
.cs-section { margin-top: 44px; }
.cs-intro-text .cs-section:first-child { margin-top: 0; }

.cs-label {
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--violet);
    font-weight: 600;
    margin-bottom: 12px;
}

.cs-section p { font-size: 17px; max-width: 760px; }

/* ---- Technologies (pills) ---- */
.cs-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.cs-tag {
    display: inline-block;
    background-color: var(--white);
    color: var(--navy);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .5px;
    padding: 8px 16px;
    border-radius: 999px;
}

/* ---- Résultats (checklist) ---- */
.cs-results { list-style: none; margin-top: 4px; }
.cs-results li {
    position: relative;
    padding-left: 30px;
    font-size: 17px;
    margin-bottom: 10px;
}
.cs-results li::before {
    content: "✔";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--violet);
    font-weight: 700;
}

/* ---- Captures (placeholders) ---- */
.cs-captures {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-top: 8px;
}
.cs-captures .cs-shot:first-child { grid-column: 1 / -1; }

.cs-shot {
    background-color: var(--white);
    border: 0px dashed var(--violet);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: var(--violet);
    overflow: hidden;
}
.cs-captures .cs-shot { aspect-ratio: 16 / 9; }
.cs-shot span { font-size: 13px; letter-spacing: 1px; }
.cs-shot small { font-size: 11px; opacity: .7; }
/* Pour une vraie image : remplacer le contenu du .cs-shot par
   <div class="cs-shot"><img src="..." alt="..."></div> */
.cs-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---- Mon rôle (mis en valeur) ---- */
.cs-role {
    position: relative;
    margin-top: 80px;
    background-color: var(--navy);
    color: var(--white);
    padding: 56px 56px 56px 64px;
    border-left: 8px solid var(--violet);
}
.cs-role .cs-role-label {
    font-size: 13px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--violet);
    font-weight: 700;
    margin-bottom: 18px;
}
.cs-role p {
    font-size: 24px;
    line-height: 1.5;
    font-weight: 500;
    margin: 0;
    max-width: 820px;
}

/* ---- CTA retour bas de page ---- */
.cs-footer { margin-top: 56px; }
.cs-btn {
    display: inline-block;
    background-color: var(--navy);
    color: var(--white) !important;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 16px 32px;
    transition: background-color .25s ease;
}
.cs-btn:hover { background-color: var(--violet); }

/* Bouton "Voir le site" dans le hero */
.cs-hero .cs-btn { margin-top: 28px; }

/* Quand une vraie image est présente, on enlève le cadre pointillé du placeholder */
.cs-shot:has(img) { border: none; }

/* ---- Responsive ---- */
@media (max-width: 880px) {
    .cs-intro { grid-template-columns: 1fr; gap: 40px; }
    .cs-intro-media { order: -1; }
    .cs-intro-media .cs-shot { position: static; aspect-ratio: 16 / 10; }
}

@media (max-width: 767px) {
    .cs-wrap { padding: 0 20px 80px; }
    .cs-title { font-size: 44px; letter-spacing: -1px; }
    .cs-hero { padding: 40px 0 36px; }
    .cs-captures { grid-template-columns: 1fr; }
    .cs-captures .cs-shot:first-child { grid-column: auto; }
    .cs-role { padding: 36px 28px 36px 32px; }
    .cs-role p { font-size: 20px; }
}