/* ============================================================
 * [Joker pivot pro 2026-05-13] notre_ia — IA souveraine landing
 * Token-based, dual-theme (dark Gold / light Trust Blue).
 * Pattern coerente con accueil/abonnement/comparatif/partnership.
 * ============================================================ */

.nai-page {
    max-width: 1240px;
    margin: 0 auto;
    padding: 40px 24px 80px;
    color: var(--zi-text);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ============================================================
   HERO
   ============================================================ */
.nai-hero {
    text-align: center;
    padding: 32px 0 48px;
}

.nai-hero-kicker {
    display: inline-block;
    font-size: var(--zi-fs-meta);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--zi-brand-on-bg);
    background: var(--zi-brand-tint-low);
    border: 1px solid var(--zi-brand-tint-mid);
    padding: 6px 14px;
    border-radius: var(--zi-radius-pill);
    margin: 0 0 18px;
}

.nai-hero-title {
    font-size: var(--zi-fs-hero);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.018em;
    color: var(--zi-text-main);
    margin: 0 auto var(--zi-heading-mb);
    max-width: 880px;
    -webkit-text-fill-color: initial;
}

.nai-hero-subtitle {
    font-size: var(--zi-fs-body-lg);
    line-height: 1.55;
    color: var(--zi-text-soft);
    max-width: 760px;
    margin: 0 auto 32px;
}

.nai-hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

/* ============================================================
   TRUST STRIP — 6 claims vérifiables
   ============================================================ */
.nai-trust {
    margin: 0 auto 56px;
    max-width: 1100px;
    padding: 20px 24px;
    background: var(--zi-bg-soft);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    text-align: center;
}

.nai-trust-title {
    font-size: var(--zi-fs-meta);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--zi-text-mute);
    margin: 0 0 14px;
}

.nai-trust-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 20px;
}

.nai-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--zi-fs-body-sm);
    color: var(--zi-text-soft);
    font-weight: 500;
}

.nai-trust-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--zi-brand);
    box-shadow: 0 0 0 3px var(--zi-brand-tint-low);
    flex-shrink: 0;
}

/* ============================================================
   SECTION HEADER (riusato 6 volte)
   ============================================================ */
.nai-section-header {
    text-align: center;
    margin: 0 auto 32px;
    max-width: 760px;
}

.nai-section-kicker {
    display: inline-block;
    font-size: var(--zi-fs-meta);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--zi-brand-on-bg);
    background: var(--zi-brand-tint-low);
    padding: 6px 14px;
    border-radius: var(--zi-radius-pill);
    margin: 0 0 16px;
}

.nai-section-title {
    font-size: var(--zi-fs-h2);
    font-weight: 800;
    line-height: 1.15;
    color: var(--zi-text-main);
    margin: 0 0 var(--zi-heading-mb);
    -webkit-text-fill-color: initial;
}

.nai-section-subtitle {
    font-size: var(--zi-fs-body-lg);
    line-height: 1.55;
    color: var(--zi-text-soft);
    margin: 0;
}

/* ============================================================
   PIPELINE — 4 step cards
   ============================================================ */
.nai-pipeline {
    margin: 0 0 64px;
}

.nai-pipeline-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

@media (max-width: 1024px) { .nai-pipeline-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .nai-pipeline-grid { grid-template-columns: 1fr; } }

.nai-step-card {
    position: relative;
    background: var(--zi-bg-panel);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    padding: 26px 22px;
    box-shadow: var(--zi-shadow-card);
    overflow: hidden;
    isolation: isolate;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.nai-step-card > * { position: relative; z-index: 1; }

.nai-step-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    border-radius: inherit;
    background: radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--zi-brand) 14%, transparent), transparent 65%);
    opacity: 0.55;
    transition: opacity 0.25s;
}

.nai-step-card:nth-child(2)::before { background: radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--zi-cyan) 14%, transparent), transparent 65%); }
.nai-step-card:nth-child(3)::before { background: radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--zi-green) 14%, transparent), transparent 65%); }
.nai-step-card:nth-child(4)::before { background: radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--zi-orange) 14%, transparent), transparent 65%); }

.nai-step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--zi-shadow-hover);
    border-color: var(--zi-brand-tint-hi);
}

.nai-step-card:hover::before { opacity: 1; }

.nai-step-num {
    font-size: var(--zi-fs-h1);
    font-weight: 800;
    line-height: 1;
    color: var(--zi-brand-tint-muted);
    letter-spacing: -1px;
    margin-bottom: 10px;
}

.nai-step-tag {
    display: inline-block;
    font-size: var(--zi-fs-meta);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--zi-brand-on-bg);
    background: var(--zi-brand-tint-low);
    padding: 3px 10px;
    border-radius: var(--zi-radius-pill);
    margin-bottom: 12px;
}

.nai-step-title {
    font-size: var(--zi-fs-h3);
    font-weight: 700;
    color: var(--zi-text-main);
    margin: 0 0 10px;
    line-height: 1.3;
    -webkit-text-fill-color: initial;
}

.nai-step-desc {
    font-size: var(--zi-fs-body-sm);
    line-height: 1.55;
    color: var(--zi-text-soft);
    margin: 0;
}

.nai-step-desc strong {
    color: var(--zi-brand-on-bg);
    font-weight: 700;
}

/* ============================================================
   STACK — 4 cards open-source models
   ============================================================ */
.nai-stack {
    margin: 0 0 64px;
}

.nai-stack-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    max-width: 1000px;
    margin: 0 auto;
}

@media (max-width: 720px) { .nai-stack-grid { grid-template-columns: 1fr; } }

.nai-stack-card {
    background: var(--zi-bg-panel);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    padding: 24px 22px;
    box-shadow: var(--zi-shadow-soft);
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.nai-stack-card:hover {
    transform: translateY(-3px);
    border-color: var(--zi-brand-tint-hi);
    box-shadow: var(--zi-shadow-hover);
}

.nai-stack-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.nai-stack-name {
    font-size: var(--zi-fs-h3);
    font-weight: 800;
    color: var(--zi-brand-on-bg);
    margin: 0;
    -webkit-text-fill-color: initial;
}

.nai-stack-license {
    font-size: var(--zi-fs-meta);
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--zi-green);
    background: color-mix(in srgb, var(--zi-green) 12%, transparent);
    padding: 3px 10px;
    border-radius: var(--zi-radius-pill);
    white-space: nowrap;
}

.nai-stack-role {
    font-size: var(--zi-fs-body);
    font-weight: 600;
    color: var(--zi-text);
    margin: 0 0 4px;
}

.nai-stack-origin {
    font-size: var(--zi-fs-body-sm);
    color: var(--zi-text-mute);
    margin: 0 0 12px;
    font-style: italic;
}

.nai-stack-fact {
    font-size: var(--zi-fs-body-sm);
    line-height: 1.55;
    color: var(--zi-text-soft);
    margin: 0;
    padding-top: 12px;
    border-top: 1px solid var(--zi-border-faint);
}

/* ============================================================
   SIMPLE — pour le grand public (3 mini-card)
   ============================================================ */
.nai-simple {
    margin: 0 0 64px;
    padding: 48px 32px;
    background:
        radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--zi-brand) 8%, transparent), transparent 70%),
        var(--zi-bg-soft);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-lg);
}

.nai-simple-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    max-width: 1000px;
    margin: 0 auto;
}

@media (max-width: 720px) { .nai-simple-grid { grid-template-columns: 1fr; } }

.nai-simple-card {
    background: var(--zi-bg-panel);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    padding: 24px 22px;
    text-align: center;
}

.nai-simple-title {
    font-size: var(--zi-fs-h3);
    font-weight: 800;
    color: var(--zi-brand-on-bg);
    margin: 0 0 12px;
    -webkit-text-fill-color: initial;
}

.nai-simple-desc {
    font-size: var(--zi-fs-body-sm);
    line-height: 1.55;
    color: var(--zi-text-soft);
    margin: 0;
}

/* ============================================================
   USE CASES — 3 personas
   ============================================================ */
.nai-usecases {
    margin: 0 0 64px;
}

.nai-usecases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

@media (max-width: 820px) { .nai-usecases-grid { grid-template-columns: 1fr; } }

.nai-usecase-card {
    background: var(--zi-bg-panel);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    padding: 26px 22px;
    box-shadow: var(--zi-shadow-soft);
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.nai-usecase-card:hover {
    transform: translateY(-4px);
    border-color: var(--zi-brand-tint-hi);
    box-shadow: var(--zi-shadow-hover);
}

.nai-usecase-tag {
    display: inline-block;
    font-size: var(--zi-fs-meta);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--zi-brand-on-bg);
    background: var(--zi-brand-tint-low);
    padding: 4px 10px;
    border-radius: var(--zi-radius-pill);
    margin-bottom: 12px;
}

.nai-usecase-title {
    font-size: var(--zi-fs-h3);
    font-weight: 700;
    color: var(--zi-text-main);
    margin: 0 0 10px;
    line-height: 1.3;
    -webkit-text-fill-color: initial;
}

.nai-usecase-desc {
    font-size: var(--zi-fs-body-sm);
    line-height: 1.55;
    color: var(--zi-text-soft);
    margin: 0;
}

/* ============================================================
   VERSUS — comparatif OpenAI / Anthropic / ZI-CHAT
   ============================================================ */
.nai-versus {
    margin: 0 0 64px;
}

.nai-versus-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

@media (max-width: 820px) { .nai-versus-grid { grid-template-columns: 1fr; } }

.nai-versus-card {
    background: var(--zi-bg-panel);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    padding: 24px 22px;
    box-shadow: var(--zi-shadow-card);
    display: flex;
    flex-direction: column;
}

.nai-versus-zichat {
    border: 2px solid var(--zi-brand);
    background:
        radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--zi-brand) 10%, transparent), transparent 60%),
        var(--zi-bg-panel);
    box-shadow: var(--zi-shadow-hover);
    transform: translateY(-8px);
}

@media (max-width: 820px) { .nai-versus-zichat { transform: none; } }

.nai-versus-tag {
    display: inline-block;
    font-size: var(--zi-fs-meta);
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    background: var(--zi-bg-soft);
    color: var(--zi-text-mute);
    padding: 4px 12px;
    border-radius: var(--zi-radius-pill);
    align-self: flex-start;
    margin-bottom: 10px;
}

.nai-versus-zichat .nai-versus-tag {
    background: var(--zi-brand);
    color: var(--zi-on-brand);
}

.nai-versus-name {
    font-size: var(--zi-fs-h3);
    font-weight: 800;
    color: var(--zi-text-main);
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--zi-border-faint);
    -webkit-text-fill-color: initial;
}

.nai-versus-zichat .nai-versus-name {
    color: var(--zi-brand-on-bg);
    border-bottom-color: var(--zi-brand-tint-mid);
}

.nai-versus-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nai-versus-list li {
    font-size: var(--zi-fs-body-sm);
    line-height: 1.5;
    color: var(--zi-text-soft);
    padding-left: 20px;
    position: relative;
}

.nai-versus-list li::before {
    content: "·";
    position: absolute;
    left: 6px;
    top: 0;
    color: var(--zi-brand);
    font-weight: 800;
    font-size: var(--zi-fs-body);
}

.nai-versus-list li strong {
    color: var(--zi-text-main);
    font-weight: 700;
}

.nai-versus-zichat .nai-versus-list li strong {
    color: var(--zi-brand-on-bg);
}

.nai-versus-savings {
    margin: 28px auto 0;
    max-width: 760px;
    text-align: center;
    font-size: var(--zi-fs-body);
    color: var(--zi-text-soft);
    font-style: italic;
    padding: 14px 20px;
    background: var(--zi-brand-tint-low);
    border: 1px dashed var(--zi-brand-tint-mid);
    border-radius: var(--zi-radius-card);
}

/* ============================================================
   INVESTORS — moat (3 cards specifiques VCs)
   ============================================================ */
.nai-investors {
    margin: 0 0 64px;
    padding: 48px 32px;
    background:
        radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--zi-violet) 6%, transparent), transparent 70%),
        var(--zi-bg-soft);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-lg);
}

.nai-investors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    max-width: 1000px;
    margin: 0 auto;
}

@media (max-width: 820px) { .nai-investors-grid { grid-template-columns: 1fr; } }

.nai-investor-card {
    background: var(--zi-bg-panel);
    border: 1px solid var(--zi-border-soft);
    border-radius: var(--zi-radius-card);
    padding: 24px 22px;
}

.nai-investor-title {
    font-size: var(--zi-fs-h3);
    font-weight: 800;
    color: var(--zi-text-main);
    margin: 0 0 12px;
    line-height: 1.3;
    -webkit-text-fill-color: initial;
}

.nai-investor-desc {
    font-size: var(--zi-fs-body-sm);
    line-height: 1.55;
    color: var(--zi-text-soft);
    margin: 0;
}

/* ============================================================
   BOTTOM CTA
   ============================================================ */
.nai-bottom-cta {
    margin: 0;
    padding: 56px 24px;
    text-align: center;
    background:
        radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--zi-brand) 10%, transparent), transparent 60%),
        linear-gradient(180deg, var(--zi-accent-bg), transparent 80%);
    border: 1px solid var(--zi-brand-tint-mid);
    border-radius: var(--zi-radius-lg);
}

.nai-bottom-cta-inner {
    max-width: 720px;
    margin: 0 auto;
}

.nai-bottom-cta-title {
    font-size: var(--zi-fs-h2);
    font-weight: 800;
    color: var(--zi-text-main);
    margin: 0 0 var(--zi-heading-mb);
    line-height: 1.15;
    -webkit-text-fill-color: initial;
}

.nai-bottom-cta-subtitle {
    font-size: var(--zi-fs-body-lg);
    line-height: 1.5;
    color: var(--zi-text-soft);
    margin: 0 0 28px;
}

.nai-bottom-cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 18px;
}

.nai-bottom-cta-trust {
    margin: 0;
    font-size: var(--zi-fs-body-sm);
    color: var(--zi-text-faint);
    font-style: italic;
}

/* ============================================================
   BUTTONS (riusabili)
   ============================================================ */
.nai-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 28px;
    font-size: var(--zi-fs-body);
    font-weight: 700;
    border-radius: var(--zi-radius-pill);
    text-decoration: none;
    border: 1px solid transparent;
    transition: var(--zi-transition);
    white-space: nowrap;
    cursor: pointer;
}

.nai-btn-primary {
    background: linear-gradient(135deg, var(--zi-brand) 0%, var(--zi-brand-strong) 100%);
    color: var(--zi-on-brand);
    border-color: var(--zi-brand);
}

.nai-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--zi-shadow-hover);
}

.nai-btn-ghost {
    background: transparent;
    color: var(--zi-brand-on-bg);
    border-color: var(--zi-brand);
    font-weight: 700;
}

.nai-btn-ghost:hover {
    background: var(--zi-accent-bg-hover);
    border-color: var(--zi-brand-strong);
    color: var(--zi-brand-strong);
}

.nai-btn:focus-visible {
    outline: 3px solid var(--zi-focus-ring);
    outline-offset: 3px;
}

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
}