/**
 * Thelis — R&D page
 * Prefix : .rd-   ·   Root : .thelis-rd
 *
 * Sous-page de Services. Trame dédiée « Research & Development ».
 * Charte Thelis. Tokens auto-suffisants redéclarés sur .thelis-rd.
 * Fonds sombres : hero / fields / pipeline / cta. Fonds clairs : approach / programs / partners.
 */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;0,700;1,300;1,400;1,600&family=Syne:wght@300;400;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ── TOKENS ─────────────────────────────────────────────────────────────── */
.thelis-rd {
    --thelis-ff-display: 'Syne', sans-serif;
    --thelis-ff-mono:    'JetBrains Mono', monospace;
    --thelis-ff-title:   'Cormorant Garamond', Georgia, serif;

    --thelis-red:      #E8294A;
    --thelis-red-dark: #c91e38;
    --thelis-black:    #111118;
    --thelis-white:    #ffffff;
    --thelis-light:    #f7f5f1;
    --thelis-gray:     rgba(17, 17, 24, 0.50);
    --thelis-border:   rgba(17, 17, 24, 0.08);

    --thelis-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
    --thelis-ease-out: cubic-bezier(0.22, 1, 0.36, 1);

    overflow-x: hidden;
    max-width: none !important;
    padding: 0 !important;
    margin-top: 0 !important;
    font-family: var(--thelis-ff-display);
}

/* Fonds blindés (battent section:nth-child + Blocksy) */
#primary.thelis-rd .rd-hero,
#primary.thelis-rd .rd-fields,
#primary.thelis-rd .rd-pipeline,
#primary.thelis-rd .rd-cta,
#primary .rd-hero,
#primary .rd-fields,
#primary .rd-pipeline,
#primary .rd-cta { background: #111118 !important; }

#primary.thelis-rd .rd-approach,
#primary.thelis-rd .rd-programs,
#primary.thelis-rd .rd-partners,
#primary .rd-approach,
#primary .rd-programs,
#primary .rd-partners { background: #f7f5f1 !important; }

/* ── KEYFRAMES ──────────────────────────────────────────────────────────── */
@keyframes rdBlurUp {
    from { opacity: 0; transform: translateY(48px); filter: blur(14px); }
    to   { opacity: 1; transform: translateY(0);    filter: blur(0);    }
}
@keyframes rdDotDrift {
    0%, 100% { background-position: 0 0; }
    50%      { background-position: 10px -8px; }
}
@keyframes rdShimmer { from { left: -100%; } to { left: 200%; } }

/* ── SHARED : label eyebrow ─────────────────────────────────────────────── */
.rd-label {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-family: var(--thelis-ff-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--thelis-red) !important;
    margin-bottom: 20px;
}
.rd-label::before {
    content: '';
    width: 36px; height: 1px;
    background: var(--thelis-red);
    opacity: 0.6;
}
.rd-label--dim { color: var(--thelis-red) !important; }

/* ════════════════════════════════════════════════
   SECTION 1 — HERO  (dark)
   ════════════════════════════════════════════════ */
.rd-hero {
    position: relative;
    padding: 150px 0 100px;
    overflow: hidden;
}
.rd-hero::before {
    content: '';
    position: absolute;
    inset: -5%;
    background-image: radial-gradient(circle, rgba(232, 41, 74, 0.07) 1.2px, transparent 1.2px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
    animation: rdDotDrift 22s ease-in-out infinite;
}
.rd-hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--thelis-red) 40%, transparent);
    opacity: 0.35;
}
.rd-hero .container { position: relative; z-index: 2; }

/* Image de fond optionnelle (rd-hero.*) */
.rd-hero__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.rd-hero__bg img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center right;
    transform: scale(1.04);
    animation: rdHeroZoom 18s ease-out forwards;
}
@keyframes rdHeroZoom { to { transform: scale(1); } }
.rd-hero__veil {
    position: absolute; inset: 0;
    background:
        linear-gradient(90deg, rgba(17,17,24,0.94) 0%, rgba(17,17,24,0.78) 42%, rgba(17,17,24,0.42) 100%),
        linear-gradient(0deg, rgba(17,17,24,0.85) 0%, rgba(17,17,24,0.20) 50%, rgba(17,17,24,0.45) 100%);
}
.rd-hero--has-img::before { opacity: 0.35; }

.rd-breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--thelis-ff-mono);
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 52px;
    animation: rdBlurUp 0.7s var(--thelis-ease-out) 0.05s both;
}
.rd-breadcrumb a { color: rgba(255, 255, 255, 0.65) !important; text-decoration: none !important; transition: color 0.2s; }
.rd-breadcrumb a:hover  { color: #fff !important; }
.rd-breadcrumb__sep     { color: rgba(255, 255, 255, 0.32) !important; }
.rd-breadcrumb__current { color: var(--thelis-red) !important; }

.rd-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--thelis-ff-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--thelis-red) !important;
    margin-bottom: 22px;
    animation: rdBlurUp 0.8s var(--thelis-ease-out) 0.12s both;
}
.rd-hero__eyebrow::before { content: ''; width: 36px; height: 1px; background: var(--thelis-red); opacity: 0.6; }

.rd-hero__title {
    font-family: var(--thelis-ff-display) !important;
    font-size: clamp(48px, 7vw, 96px);
    font-weight: 700;
    letter-spacing: -3px;
    line-height: 1.0;
    color: #fff !important;
    margin: 0 0 24px;
    max-width: 14ch;
    animation: rdBlurUp 1.2s var(--thelis-ease-out) 0.22s both;
}
.rd-hero__title em { font-style: italic; color: var(--thelis-red) !important; }
.rd-hero__subtitle {
    font-family: var(--thelis-ff-display);
    font-size: clamp(16px, 1.8vw, 21px);
    font-weight: 300;
    color: rgba(255, 255, 255, 0.74) !important;
    line-height: 1.7;
    max-width: 620px;
    margin: 0 0 36px;
    animation: rdBlurUp 0.9s var(--thelis-ease-out) 0.42s both;
}
.rd-hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 64px;
    animation: rdBlurUp 0.9s var(--thelis-ease-out) 0.56s both;
}

.rd-hero__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 56px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.10);
    animation: rdBlurUp 0.9s var(--thelis-ease-out) 0.70s both;
}
.rd-stat { display: flex; flex-direction: column; gap: 6px; }
.rd-stat__num {
    font-family: var(--thelis-ff-title);
    font-size: clamp(38px, 4.5vw, 58px);
    font-weight: 600;
    line-height: 1;
    color: #fff !important;
    letter-spacing: -1px;
}
.rd-stat__num span { color: var(--thelis-red) !important; font-size: 0.55em; vertical-align: super; }
.rd-stat__label {
    font-family: var(--thelis-ff-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.58) !important;
}

/* ════════════════════════════════════════════════
   SECTION 2 — APPROACH  (light)
   ════════════════════════════════════════════════ */
.rd-approach {
    position: relative;
    padding: 110px 0;
}
.rd-approach::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--thelis-red), transparent);
}
.rd-approach__head {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: end;
    margin-bottom: 64px;
}
.rd-approach__title {
    font-family: var(--thelis-ff-display);
    font-size: clamp(28px, 3.6vw, 46px);
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: var(--thelis-black);
    margin: 0;
    max-width: 16ch;
}
.rd-approach__lead {
    font-family: var(--thelis-ff-display);
    font-size: 17px;
    font-weight: 300;
    line-height: 1.75;
    color: var(--thelis-gray);
    margin: 0;
}

.rd-principles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.rd-principle {
    background: var(--thelis-white);
    border: 1px solid var(--thelis-border);
    border-top: 2px solid transparent;
    border-radius: 4px;
    padding: 32px 28px;
    transition: transform 0.45s var(--thelis-spring), box-shadow 0.25s ease, border-top-color 0.25s ease;
}
.rd-principle:hover {
    transform: translateY(-6px);
    border-top-color: var(--thelis-red);
    box-shadow: 0 24px 54px rgba(17, 17, 24, 0.10);
}
.rd-principle__num {
    display: block;
    font-family: var(--thelis-ff-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--thelis-red);
    margin-bottom: 18px;
}
.rd-principle__title {
    font-family: var(--thelis-ff-display);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.25;
    color: var(--thelis-black);
    margin: 0 0 12px;
}
.rd-principle__desc {
    font-family: var(--thelis-ff-display);
    font-size: 14.5px;
    font-weight: 300;
    line-height: 1.65;
    color: var(--thelis-gray);
    margin: 0;
}

/* ════════════════════════════════════════════════
   SECTION 3 — FIELDS  (dark)
   ════════════════════════════════════════════════ */
.rd-fields {
    position: relative;
    padding: 110px 0;
    overflow: hidden;
}
.rd-fields::before {
    content: '';
    position: absolute;
    inset: -5%;
    background-image: radial-gradient(circle, rgba(232, 41, 74, 0.06) 1.2px, transparent 1.2px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
}
.rd-fields::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--thelis-red), transparent);
}
.rd-fields .container { position: relative; z-index: 2; }
.rd-fields__head { margin-bottom: 52px; }
.rd-fields__title {
    font-family: var(--thelis-ff-display);
    font-size: clamp(28px, 3.6vw, 46px);
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: #fff !important;
    margin: 0;
    max-width: 18ch;
}
.rd-fields__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}
.rd-field {
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 2px solid transparent;
    border-radius: 4px;
    padding: 32px 28px;
    transition: transform 0.45s var(--thelis-spring), background 0.25s ease, border-top-color 0.25s ease;
}
.rd-field:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.05);
    border-top-color: var(--thelis-red);
}
.rd-field__title {
    font-family: var(--thelis-ff-display);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.25;
    color: #fff !important;
    margin: 0 0 12px;
}
.rd-field__desc {
    font-family: var(--thelis-ff-display);
    font-size: 14.5px;
    font-weight: 300;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.70) !important;
    margin: 0;
}

/* ════════════════════════════════════════════════
   SECTION 4 — FLAGSHIP PROGRAMS  (light)
   ════════════════════════════════════════════════ */
.rd-programs {
    position: relative;
    padding: 110px 0;
}
.rd-programs::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--thelis-red), transparent);
}
.rd-programs__head { margin-bottom: 52px; }
.rd-programs__title {
    font-family: var(--thelis-ff-display);
    font-size: clamp(28px, 3.6vw, 46px);
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: var(--thelis-black);
    margin: 0;
}
.rd-programs__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}
.rd-program {
    display: flex;
    flex-direction: column;
    background: var(--thelis-white);
    border: 1px solid var(--thelis-border);
    border-top: 3px solid transparent;
    border-radius: 6px;
    padding: 38px 36px;
    transition: transform 0.45s var(--thelis-spring), box-shadow 0.3s ease, border-top-color 0.3s ease;
}
.rd-program:hover {
    transform: translateY(-8px);
    border-top-color: var(--thelis-red);
    box-shadow: 0 28px 64px rgba(17, 17, 24, 0.12);
}
.rd-program__top { margin-bottom: 20px; }
.rd-program__tag {
    display: inline-block;
    font-family: var(--thelis-ff-mono);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--thelis-red);
    padding: 5px 11px;
    border-radius: 100px;
    background: rgba(232, 41, 74, 0.08);
    margin-bottom: 16px;
}
.rd-program__name {
    font-family: var(--thelis-ff-display);
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--thelis-black);
    margin: 0;
}
.rd-program__desc {
    font-family: var(--thelis-ff-display);
    font-size: 15px;
    font-weight: 300;
    line-height: 1.7;
    color: var(--thelis-gray);
    margin: 0 0 26px;
}
.rd-program__metrics {
    display: flex;
    gap: 40px;
    padding: 22px 0;
    border-top: 1px solid var(--thelis-border);
    border-bottom: 1px solid var(--thelis-border);
    margin-bottom: 22px;
}
.rd-program__metric { display: flex; flex-direction: column; gap: 6px; }
.rd-program__value {
    font-family: var(--thelis-ff-title);
    font-size: 34px;
    font-weight: 600;
    line-height: 1;
    color: var(--thelis-red);
    letter-spacing: -0.5px;
}
.rd-program__value span {
    font-family: var(--thelis-ff-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--thelis-gray);
    letter-spacing: 0;
}
.rd-program__mlabel {
    font-family: var(--thelis-ff-mono);
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--thelis-gray);
}
.rd-program__note {
    font-family: var(--thelis-ff-mono);
    font-size: 11px;
    line-height: 1.6;
    letter-spacing: 0.5px;
    color: var(--thelis-gray);
    margin: 0 0 18px;
}
.rd-program__outcome {
    margin-top: auto;
    font-family: var(--thelis-ff-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--thelis-black);
}
.rd-program__outcome a {
    color: var(--thelis-red) !important;
    text-decoration: none !important;
    font-weight: 700;
    transition: opacity 0.2s;
}
.rd-program__outcome a:hover { opacity: 0.7; }

/* ════════════════════════════════════════════════
   SECTION 5 — FROM RESEARCH TO PRODUCT  (dark)
   ════════════════════════════════════════════════ */
.rd-pipeline {
    position: relative;
    padding: 110px 0;
    overflow: hidden;
}
.rd-pipeline::before {
    content: '';
    position: absolute;
    inset: -5%;
    background-image: radial-gradient(circle, rgba(232, 41, 74, 0.06) 1.2px, transparent 1.2px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
}
.rd-pipeline::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--thelis-red), transparent);
}
.rd-pipeline .container { position: relative; z-index: 2; }
.rd-pipeline__head { max-width: 720px; margin-bottom: 56px; }
.rd-pipeline__title {
    font-family: var(--thelis-ff-title) !important;
    font-size: clamp(32px, 4.2vw, 52px);
    font-weight: 600;
    letter-spacing: -1px;
    line-height: 1.08;
    color: #fff !important;
    margin: 0 0 18px;
}
.rd-pipeline__title em { font-style: italic; color: var(--thelis-red) !important; }
.rd-pipeline__lead {
    font-family: var(--thelis-ff-display);
    font-size: 16px;
    font-weight: 300;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.72) !important;
    margin: 0;
}

.rd-flow {
    display: flex;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 48px;
}
.rd-flow__step {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    padding: 30px 26px;
}
.rd-flow__num {
    display: block;
    font-family: var(--thelis-ff-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--thelis-red) !important;
    margin-bottom: 16px;
}
.rd-flow__title {
    font-family: var(--thelis-ff-display);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #fff !important;
    margin: 0 0 10px;
}
.rd-flow__desc {
    font-family: var(--thelis-ff-display);
    font-size: 14px;
    font-weight: 300;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.68) !important;
    margin: 0;
}
.rd-flow__arrow {
    align-self: center;
    font-family: var(--thelis-ff-mono);
    font-size: 28px;
    color: var(--thelis-red) !important;
    flex-shrink: 0;
}
.rd-pipeline__cta { display: flex; }

/* ════════════════════════════════════════════════
   SECTION 6 — PARTNERS  (light)
   ════════════════════════════════════════════════ */
.rd-partners {
    position: relative;
    padding: 100px 0;
}
.rd-partners::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--thelis-red), transparent);
}
.rd-partners__head { max-width: 640px; margin-bottom: 44px; }
.rd-partners__title {
    font-family: var(--thelis-ff-display);
    font-size: clamp(26px, 3.2vw, 40px);
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: var(--thelis-black);
    margin: 0 0 14px;
}
.rd-partners__lead {
    font-family: var(--thelis-ff-display);
    font-size: 15px;
    font-weight: 300;
    line-height: 1.7;
    color: var(--thelis-gray);
    margin: 0;
}
.rd-partners__list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.rd-partners__list li {
    font-family: var(--thelis-ff-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--thelis-black);
    padding: 12px 20px;
    border: 1px solid var(--thelis-border);
    border-radius: 2px;
    background: var(--thelis-white);
    transition: border-color 0.25s ease, color 0.25s ease, transform 0.35s var(--thelis-spring);
}
.rd-partners__list li:hover {
    border-color: var(--thelis-red);
    color: var(--thelis-red);
    transform: translateY(-3px);
}

/* ════════════════════════════════════════════════
   SECTION 7 — CTA  (dark)
   ════════════════════════════════════════════════ */
.rd-cta {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}
.rd-cta::before {
    content: '';
    position: absolute;
    inset: -5%;
    background-image: radial-gradient(circle, rgba(232, 41, 74, 0.07) 1.2px, transparent 1.2px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
    animation: rdDotDrift 22s ease-in-out infinite;
}
.rd-cta::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--thelis-red), transparent);
}
.rd-cta .container { position: relative; z-index: 2; text-align: center; }
.rd-cta__title {
    font-family: var(--thelis-ff-title) !important;
    font-size: clamp(32px, 4.5vw, 58px);
    font-weight: 600;
    letter-spacing: -1px;
    line-height: 1.08;
    color: #fff !important;
    margin: 16px 0 20px;
}
.rd-cta__title em { font-style: italic; color: var(--thelis-red) !important; }
.rd-cta__desc {
    font-family: var(--thelis-ff-display);
    font-size: 16px;
    font-weight: 300;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.72) !important;
    margin: 0 auto 36px;
    max-width: 540px;
}
.rd-cta__btn {
    font-family: var(--thelis-ff-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    text-decoration: none !important;
    color: #fff !important;
    background: var(--thelis-red);
    padding: 16px 40px;
    border-radius: 2px;
    display: inline-block;
    position: relative;
    overflow: hidden;
    transition: background 0.22s ease, transform 0.3s var(--thelis-spring), box-shadow 0.25s ease;
}
.rd-cta__btn::after {
    content: '';
    position: absolute;
    top: 0; left: -60%;
    width: 40%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
    transform: skewX(-15deg);
}
.rd-cta__btn:hover { background: var(--thelis-red-dark); transform: translateY(-3px); box-shadow: 0 10px 36px rgba(232, 41, 74, 0.38); color: #fff !important; }
.rd-cta__btn:hover::after { animation: rdShimmer 0.55s ease forwards; }

/* ════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .rd-approach__head { grid-template-columns: 1fr; gap: 20px; }
    .rd-flow { flex-direction: column; }
    .rd-flow__arrow { transform: rotate(90deg); }
}
@media (max-width: 768px) {
    .rd-hero { padding: 120px 0 80px; }
    .rd-approach, .rd-fields, .rd-programs, .rd-pipeline, .rd-cta { padding: 80px 0; }
    .rd-partners { padding: 70px 0; }
    .rd-hero__stats { gap: 32px; }
    .rd-programs__grid { grid-template-columns: 1fr; }
    .rd-program__metrics { gap: 28px; }
}