/* =====================================================
   SACOTEC — Design System Premium
   Style : Corporate tech (Microsoft/Salesforce/SAP)
   ===================================================== */

/* ============================================
   1. RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg, video {
    max-width: 100%;
    height: auto;
    display: block;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }

ul, ol { list-style: none; }

/* ============================================
   2. VARIABLES (DESIGN TOKENS)
   ============================================ */
:root {
    /* Palette principale */
    --navy-950: #050B1F;
    --navy-900: #0B1A3A;
    --navy-800: #11244A;
    --navy-700: #1A3160;
    --navy-600: #234084;
    --navy-500: #2D52A8;

    --blue-600: #2563EB;
    --blue-500: #3B82F6;
    --blue-400: #60A5FA;
    --blue-300: #93C5FD;

    --cyan-500: #06B6D4;
    --cyan-400: #22D3EE;

    --gold-500: #D4AF37;
    --gold-400: #E5C158;

    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;

    --green-500: #10B981;
    --red-500:   #EF4444;

    /* Sémantique */
    --bg: var(--white);
    --bg-soft: var(--gray-50);
    --bg-dark: var(--navy-900);
    --bg-darker: var(--navy-950);
    --text: var(--gray-900);
    --text-soft: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-inverse: var(--white);
    --border: var(--gray-200);
    --border-strong: var(--gray-300);
    --primary: var(--navy-900);
    --accent: var(--blue-600);
    --accent-hover: var(--blue-500);

    /* Gradients premium */
    --grad-hero: linear-gradient(135deg, #050B1F 0%, #0B1A3A 50%, #1A3160 100%);
    --grad-accent: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
    --grad-gold: linear-gradient(135deg, #D4AF37 0%, #E5C158 100%);
    --grad-card: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
    --grad-glow: radial-gradient(circle at 50% 0%, rgba(37,99,235,0.25) 0%, transparent 60%);

    /* Typographie */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    /* Échelle typographique */
    --text-xs:   0.75rem;
    --text-sm:   0.875rem;
    --text-base: 1rem;
    --text-lg:   1.125rem;
    --text-xl:   1.25rem;
    --text-2xl:  1.5rem;
    --text-3xl:  1.875rem;
    --text-4xl:  2.25rem;
    --text-5xl:  3rem;
    --text-6xl:  3.75rem;
    --text-7xl:  4.5rem;
    --text-8xl:  6rem;

    /* Espacement */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Radius */
    --radius-sm: 6px;
    --radius:    10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Shadows premium */
    --shadow-sm: 0 1px 2px 0 rgba(11, 26, 58, 0.05);
    --shadow:    0 1px 3px 0 rgba(11, 26, 58, 0.08), 0 1px 2px -1px rgba(11, 26, 58, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(11, 26, 58, 0.08), 0 2px 4px -2px rgba(11, 26, 58, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(11, 26, 58, 0.08), 0 4px 6px -4px rgba(11, 26, 58, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(11, 26, 58, 0.10), 0 8px 10px -6px rgba(11, 26, 58, 0.06);
    --shadow-2xl: 0 32px 64px -16px rgba(11, 26, 58, 0.18);
    --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.35);
    --shadow-glow-cyan: 0 0 40px rgba(6, 182, 212, 0.35);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --transition-fast: 150ms var(--ease-out);
    --transition: 250ms var(--ease-out);
    --transition-slow: 400ms var(--ease-out);

    /* Layout */
    --container: 1280px;
    --container-wide: 1440px;
    --container-narrow: 960px;
    --nav-height: 76px;
    --section-padding: clamp(4rem, 8vw, 7rem);

    /* Z-index */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-bg: 400;
    --z-modal: 500;
    --z-toast: 600;
    --z-tooltip: 700;
}

/* ============================================
   3. TYPOGRAPHIE
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 3.8vw, 3rem); letter-spacing: -0.025em; }
h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p { color: var(--text-soft); line-height: 1.7; }

.text-display {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

.lead { font-size: var(--text-xl); color: var(--text-soft); line-height: 1.6; max-width: 65ch; }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    padding: var(--space-2) var(--space-4);
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.18);
    border-radius: var(--radius-full);
}

.eyebrow.eyebrow-light {
    color: var(--cyan-400);
    background: rgba(6, 182, 212, 0.10);
    border-color: rgba(6, 182, 212, 0.25);
}

.eyebrow::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
}

.text-gradient {
    background: var(--grad-accent);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-gold {
    background: var(--grad-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ============================================
   4. LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

.container-narrow { max-width: var(--container-narrow); }
.container-wide { max-width: var(--container-wide); }

.section {
    padding-top: var(--section-padding);
    padding-bottom: var(--section-padding);
    position: relative;
}

.section-dark {
    background: var(--bg-dark);
    color: var(--text-inverse);
}
.section-dark p,
.section-dark .lead { color: rgba(255,255,255,0.7); }
.section-dark h1, .section-dark h2, .section-dark h3,
.section-dark h4, .section-dark h5, .section-dark h6 { color: var(--white); }

.section-soft { background: var(--bg-soft); }

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto var(--space-16);
}

.section-header .eyebrow { margin-bottom: var(--space-5); }
.section-header h2 { margin-bottom: var(--space-5); }
.section-header p { font-size: var(--text-lg); color: var(--text-soft); }

.grid { display: grid; gap: var(--space-8); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-5 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* ============================================
   5. BOUTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    position: relative;
    isolation: isolate;
    text-decoration: none;
    border: 1.5px solid transparent;
}

.btn svg { width: 18px; height: 18px; transition: transform var(--transition); }

.btn-primary {
    background: var(--grad-accent);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.45);
}
.btn-primary:hover svg { transform: translateX(4px); }

.btn-dark {
    background: var(--navy-900);
    color: var(--white);
}
.btn-dark:hover {
    background: var(--navy-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--border-strong);
}
.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.btn-ghost-light {
    background: rgba(255,255,255,0.08);
    color: var(--white);
    border-color: rgba(255,255,255,0.18);
    backdrop-filter: blur(10px);
}
.btn-ghost-light:hover {
    background: rgba(255,255,255,0.16);
    border-color: rgba(255,255,255,0.35);
    transform: translateY(-2px);
}

.btn-gold {
    background: var(--grad-gold);
    color: var(--navy-900);
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(212, 175, 55, 0.35);
}
.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(212, 175, 55, 0.50);
}

.btn-lg {
    padding: 1.125rem 2.25rem;
    font-size: var(--text-lg);
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--text-sm);
}

.btn-link {
    color: var(--accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: gap var(--transition);
}
.btn-link:hover { gap: var(--space-3); }
.btn-link::after { content: '→'; transition: transform var(--transition); }

/* ============================================
   6. CARDS
   ============================================ */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.card-dark {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.10);
    backdrop-filter: blur(10px);
    color: var(--white);
}
.card-dark:hover {
    background: rgba(255,255,255,0.07);
    border-color: rgba(255,255,255,0.20);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    background: rgba(37, 99, 235, 0.10);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
    transition: all var(--transition);
}

.card-icon svg { width: 28px; height: 28px; }

.card:hover .card-icon {
    background: var(--grad-accent);
    color: var(--white);
    transform: scale(1.08) rotate(-4deg);
    box-shadow: var(--shadow-glow);
}

.card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}
.card p { font-size: var(--text-base); color: var(--text-soft); }

/* Premium gradient border card */
.card-premium {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.card-premium::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 1.5px;
    background: linear-gradient(135deg, var(--accent), var(--cyan-500), var(--gold-500));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition);
}
.card-premium:hover::before { opacity: 1; }

/* ============================================
   7. BADGE / TAGS
   ============================================ */
.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.375rem 0.875rem;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    color: var(--gray-700);
}
.tag-accent { background: rgba(37, 99, 235, 0.10); color: var(--accent); }
.tag-success { background: rgba(16, 185, 129, 0.12); color: var(--green-500); }
.tag-gold { background: rgba(212, 175, 55, 0.15); color: #8B7300; }

/* ============================================
   8. NAVIGATION (HEADER)
   ============================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.96);
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-wide);
    margin: 0 auto;
    height: 100%;
    padding: 0 clamp(1rem, 4vw, 2.5rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--primary);
    flex-shrink: 0;
}
.nav-logo .logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--grad-accent);
    display: grid;
    place-items: center;
    color: var(--white);
    font-weight: 800;
    box-shadow: var(--shadow-md), 0 0 0 1px rgba(37, 99, 235, 0.2);
    position: relative;
    overflow: hidden;
}
.nav-logo .logo-mark::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 600ms;
}
.nav-logo:hover .logo-mark::after { transform: translateX(100%); }

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex: 1;
    justify-content: center;
}

.nav-link {
    padding: 0.5rem 0.7rem;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-soft);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: var(--gray-100); }
.nav-link.active { color: var(--accent); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 50%;
    transform: translateX(-50%);
    width: 18px; height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.5rem 0.875rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}
.lang-switch:hover { color: var(--primary); border-color: var(--primary); }
.lang-switch svg { width: 14px; height: 14px; }

.nav-login {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    white-space: nowrap;
    padding: 0.55rem 1rem;
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--white);
    background: var(--navy-900);
    border: 1px solid var(--navy-900);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}
.nav-login:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(11, 26, 58, 0.25);
}
.nav-login svg { width: 14px; height: 14px; }

.nav-link-cta {
    background: var(--navy-900);
    color: var(--white) !important;
    font-weight: 700;
    margin-top: var(--space-3);
    justify-content: center;
    gap: var(--space-2);
}
.nav-link-cta:hover {
    background: var(--accent) !important;
    color: var(--white) !important;
}
.nav-link-cta svg { width: 16px; height: 16px; }

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.nav-toggle span {
    width: 18px; height: 2px;
    background: var(--primary);
    position: relative;
    transition: all var(--transition);
}
.nav-toggle span::before, .nav-toggle span::after {
    content: '';
    position: absolute;
    left: 0; width: 18px; height: 2px;
    background: var(--primary);
    transition: all var(--transition);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* Desktop intermédiaire (1024–1240px) : on resserre la barre mais on garde le
   bouton "Connexion" visible. Il n'est masqué qu'en mode hamburger (<1024px),
   où il réapparaît dans le menu déroulant. */
@media (max-width: 1023px) {
    .nav-login { display: none; }
}
@media (min-width: 1024px) and (max-width: 1240px) {
    .nav-container { gap: var(--space-2); }
    .nav-menu { gap: 0; }
    .nav-link { padding: 0.45rem 0.55rem; }
    .nav-actions { gap: var(--space-2); }
}

/* Tablette & mobile (<1024px) : menu hamburger. */
@media (max-width: 1023px) {
    .nav-menu, .nav-actions .btn:not(.btn-primary):not(.btn-dark) { display: none; }
    .nav-toggle { display: inline-flex; }
    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height); left: 0; right: 0;
        background: var(--white);
        padding: var(--space-6);
        gap: var(--space-2);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }
    .nav-menu.open .nav-link { width: 100%; padding: var(--space-3) var(--space-4); }
}

/* ============================================
   9. HERO PREMIUM
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: calc(var(--nav-height) + 5rem);
    padding-bottom: 5rem;
    background: var(--grad-hero);
    color: var(--white);
    overflow: hidden;
    isolation: isolate;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(37, 99, 235, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(6, 182, 212, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 0%, rgba(212, 175, 55, 0.12) 0%, transparent 60%);
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: var(--space-16);
    position: relative;
    z-index: 2;
}

@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: var(--space-12); }
}

.hero-content > * + * { margin-top: var(--space-6); }

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.75rem, 6vw, 5.25rem);
    font-weight: 700;
    line-height: 1.02;
    letter-spacing: -0.03em;
    color: var(--white);
}
.hero-title .accent {
    background: linear-gradient(135deg, #60A5FA 0%, #22D3EE 50%, #D4AF37 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    color: rgba(255,255,255,0.78);
    line-height: 1.65;
    max-width: 560px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-8);
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-top: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.10);
}

.hero-meta-item {
    display: flex;
    flex-direction: column;
}
.hero-meta-item .num {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--white);
    line-height: 1;
}
.hero-meta-item .lbl {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.55);
    margin-top: var(--space-2);
}

/* Hero visual : dashboard mockup */
.hero-visual {
    position: relative;
    aspect-ratio: 5/4;
    perspective: 1200px;
}

.hero-mockup {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    backdrop-filter: blur(20px);
    transform: rotateY(-8deg) rotateX(6deg);
    transform-style: preserve-3d;
    box-shadow:
        0 50px 100px -20px rgba(0,0,0,0.5),
        0 0 0 1px rgba(255,255,255,0.05),
        inset 0 0 30px rgba(255,255,255,0.04);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: rotateY(-8deg) rotateX(6deg) translateY(0); }
    50% { transform: rotateY(-8deg) rotateX(6deg) translateY(-12px); }
}

.mock-bar {
    display: flex;
    gap: 6px;
    margin-bottom: var(--space-4);
}
.mock-bar span {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
}
.mock-bar span:nth-child(1) { background: #FF5F57; }
.mock-bar span:nth-child(2) { background: #FEBC2E; }
.mock-bar span:nth-child(3) { background: #27C940; }

.mock-screen {
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius);
    padding: var(--space-5);
    height: calc(100% - 28px);
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: var(--space-4);
}

.mock-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.mock-header .mock-title {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    color: var(--white);
    font-weight: 600;
}
.mock-header .mock-pill {
    font-size: 10px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: rgba(6, 182, 212, 0.20);
    color: var(--cyan-400);
    border: 1px solid rgba(6, 182, 212, 0.35);
}

.mock-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}
.mock-stat {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: var(--space-3);
}
.mock-stat .v {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--white);
    line-height: 1;
}
.mock-stat .l {
    font-size: 10px;
    color: rgba(255,255,255,0.5);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.mock-chart {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: var(--space-4);
    position: relative;
    overflow: hidden;
}
.mock-chart svg { width: 100%; height: 100%; }

.mock-footer {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}
.mock-tag {
    font-size: 10px;
    padding: 4px 8px;
    border-radius: 4px;
    background: rgba(37, 99, 235, 0.25);
    color: var(--blue-300);
}

/* Bulles flottantes */
.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: orb 8s ease-in-out infinite;
}
.hero-orb-1 {
    width: 300px; height: 300px;
    background: var(--blue-500);
    top: 10%; right: -10%;
}
.hero-orb-2 {
    width: 220px; height: 220px;
    background: var(--cyan-500);
    bottom: 10%; left: -5%;
    animation-delay: 2s;
}
.hero-orb-3 {
    width: 180px; height: 180px;
    background: var(--gold-500);
    top: 50%; left: 50%;
    opacity: 0.25;
    animation-delay: 4s;
}
@keyframes orb {
    0%, 100% { transform: translate(0,0) scale(1); }
    50% { transform: translate(20px, -30px) scale(1.05); }
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255,255,255,0.55);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    z-index: 2;
}
.hero-scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, transparent, rgba(255,255,255,0.5));
    animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
    0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   10. STATS SECTION
   ============================================ */
.stats-section {
    background: var(--navy-950);
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(37,99,235,0.15) 0%, transparent 60%);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-8);
    text-align: center;
    position: relative;
    z-index: 2;
}
.stat-item {
    padding: var(--space-6) var(--space-4);
    border-right: 1px solid rgba(255,255,255,0.08);
}
.stat-item:last-child { border-right: 0; }
@media (max-width: 768px) { .stat-item { border-right: 0; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: var(--space-6); } }

.stat-value {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 700;
    line-height: 1;
    background: linear-gradient(135deg, var(--white) 0%, var(--cyan-400) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.03em;
}
.stat-label {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.65);
    margin-top: var(--space-3);
    letter-spacing: 0.05em;
}

/* ============================================
   11. SERVICES (3 piliers)
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.service-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    isolation: isolate;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: var(--grad-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-2xl);
    transform: translateY(-6px);
}

.service-card.featured {
    background: var(--navy-900);
    color: var(--white);
    border-color: transparent;
}
.service-card.featured::before { background: var(--grad-gold); }
.service-card.featured p { color: rgba(255,255,255,0.7); }

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    background: var(--grad-accent);
    display: grid;
    place-items: center;
    color: var(--white);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition);
}
.service-card.featured .service-icon {
    background: var(--grad-gold);
    color: var(--navy-900);
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.35);
}
.service-icon svg { width: 30px; height: 30px; }
.service-card:hover .service-icon { transform: scale(1.08) rotate(-5deg); }

.service-card h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
}

.service-list {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
}
.service-card.featured .service-list { border-color: rgba(255,255,255,0.12); }

.service-list li {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--text-soft);
}
.service-card.featured .service-list li { color: rgba(255,255,255,0.8); }
.service-list li::before {
    content: '';
    flex-shrink: 0;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.10);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-position: center;
    background-repeat: no-repeat;
    background-size: 11px;
    margin-top: 3px;
}
.service-card.featured .service-list li::before {
    background-color: rgba(212, 175, 55, 0.18);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23D4AF37' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* ============================================
   12. LOGICIELS (Software Gallery)
   ============================================ */
.software-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.software-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-slow);
    display: flex;
    flex-direction: column;
}
.software-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: transparent;
}

.software-cover {
    aspect-ratio: 16/10;
    background: var(--grad-hero);
    position: relative;
    overflow: hidden;
    display: grid;
    place-items: center;
    color: var(--white);
}
.software-cover::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(37,99,235,0.5) 0%, transparent 60%);
}
.software-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 30px 30px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.software-cover .software-logo {
    position: relative;
    z-index: 2;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: var(--text-2xl);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.software-cover .software-logo .badge {
    width: 48px; height: 48px;
    border-radius: var(--radius);
    background: var(--grad-accent);
    display: grid; place-items: center;
    box-shadow: var(--shadow-glow);
    color: var(--white);
}
.software-cover .software-logo .badge svg { width: 26px; height: 26px; }

.software-body {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.software-tag {
    font-size: var(--text-xs);
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-2);
}
.software-body h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}
.software-body p { flex: 1; font-size: var(--text-sm); }
.software-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid var(--border);
}

/* ============================================
   13. SECTEURS
   ============================================ */
.sectors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-4);
}
.sector-item {
    padding: var(--space-6) var(--space-4);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}
.sector-item:hover {
    transform: translateY(-4px);
    border-color: transparent;
    background: var(--grad-accent);
    color: var(--white);
    box-shadow: var(--shadow-xl);
}
.sector-item:hover .sector-icon { background: rgba(255,255,255,0.18); color: var(--white); }
.sector-item .sector-icon {
    width: 48px; height: 48px;
    border-radius: var(--radius);
    background: var(--bg-soft);
    color: var(--accent);
    display: grid;
    place-items: center;
    transition: all var(--transition);
}
.sector-item svg { width: 24px; height: 24px; }
.sector-item .sector-label {
    font-size: var(--text-sm);
    font-weight: 600;
}

/* ============================================
   14. WHY US (Pourquoi SACOTEC)
   ============================================ */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-4);
}
.why-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.why-item:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(37,99,235,0.35);
    transform: translateX(4px);
}
.why-check {
    flex-shrink: 0;
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--grad-accent);
    display: grid; place-items: center;
    color: var(--white);
    box-shadow: var(--shadow-glow);
}
.why-check svg { width: 16px; height: 16px; }
.why-item .why-text {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--white);
    margin-top: 4px;
}

/* ============================================
   15. CTA SECTIONS
   ============================================ */
.cta-banner {
    position: relative;
    padding: clamp(3rem, 6vw, 5rem) clamp(2rem, 5vw, 4rem);
    background: var(--grad-hero);
    color: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    isolation: isolate;
    box-shadow: var(--shadow-2xl);
}
.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 0% 0%, rgba(37,99,235,0.40) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(6,182,212,0.30) 0%, transparent 50%);
    z-index: -1;
}
.cta-banner h2 {
    color: var(--white);
    margin-bottom: var(--space-4);
}
.cta-banner p {
    color: rgba(255,255,255,0.8);
    font-size: var(--text-lg);
    max-width: 600px;
    margin-bottom: var(--space-8);
}
.cta-banner-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

/* ============================================
   16. FORMULAIRES
   ============================================ */
.form-group { margin-bottom: var(--space-5); }
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
}
.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text);
    margin-bottom: var(--space-2);
}
.form-control {
    display: block;
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: var(--text-base);
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    color: var(--text);
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}
textarea.form-control { min-height: 140px; resize: vertical; }
.form-help {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-2);
}

/* ============================================
   17. FOOTER
   ============================================ */
.footer {
    background: var(--navy-950);
    color: rgba(255,255,255,0.7);
    padding: var(--space-20) 0 var(--space-8);
    position: relative;
    overflow: hidden;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(4, 1fr);
    gap: var(--space-10);
    margin-bottom: var(--space-16);
}
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
    .footer-grid { grid-template-columns: 1fr; }
}

.footer-brand .nav-logo { color: var(--white); margin-bottom: var(--space-4); }
.footer-tagline {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    margin-bottom: var(--space-6);
    max-width: 320px;
}

.footer-social { display: flex; gap: var(--space-3); }
.footer-social a {
    width: 38px; height: 38px;
    display: grid; place-items: center;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.10);
    color: rgba(255,255,255,0.7);
    transition: all var(--transition);
}
.footer-social a:hover {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
    transform: translateY(-2px);
}
.footer-social svg { width: 16px; height: 16px; }

.footer h4 {
    color: var(--white);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: var(--space-5);
}
.footer ul li { margin-bottom: var(--space-3); }
.footer ul a {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.65);
    transition: color var(--transition-fast);
}
.footer ul a:hover { color: var(--white); }

.newsletter-form {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-4);
}
.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius);
    color: var(--white);
    font-size: var(--text-sm);
}
.newsletter-form input::placeholder { color: rgba(255,255,255,0.45); }
.newsletter-form input:focus { outline: none; border-color: var(--accent); }
.newsletter-form button {
    padding: 0.75rem 1.25rem;
    background: var(--grad-accent);
    color: var(--white);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: 600;
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: rgba(255,255,255,0.5);
}
.footer-bottom-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
}
.footer-bottom-links a:hover { color: var(--white); }

/* ============================================
   17b. IMAGE CARDS / MEDIA
   ============================================ */
.image-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/5;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow);
    cursor: pointer;
    isolation: isolate;
}
.image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.image-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, transparent 40%, rgba(5, 11, 31, 0.85) 100%);
    z-index: 1;
}
.image-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2xl); }
.image-card:hover img { transform: scale(1.06); }

.image-card-content {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 2rem 1.75rem 1.75rem;
    color: var(--white);
    z-index: 2;
}
.image-card-content .tag {
    display: inline-flex;
    background: rgba(255,255,255,0.15);
    color: var(--cyan-400);
    border: 1px solid rgba(34,211,238,0.30);
    backdrop-filter: blur(10px);
    margin-bottom: var(--space-3);
}
.image-card-content h3 {
    color: var(--white);
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
    line-height: 1.2;
}
.image-card-content p {
    color: rgba(255,255,255,0.78);
    font-size: var(--text-sm);
    line-height: 1.5;
}

/* Image avec ratio 16/9 horizontal */
.image-card.wide { aspect-ratio: 16/10; }
.image-card.square { aspect-ratio: 1/1; }

/* Photo en pleine largeur d'une section split */
.media-split {
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 5/6;
    position: relative;
    box-shadow: var(--shadow-xl);
}
.media-split img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.media-split::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 26, 58, 0.15), transparent 50%);
}

/* Photo de fond avec dégradé bleu */
.media-overlay {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16/9;
}
.media-overlay img {
    width: 100%; height: 100%;
    object-fit: cover;
}
.media-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 26, 58, 0.75), rgba(37, 99, 235, 0.40));
}

/* Logo bar (clients) */
.logos-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 2rem;
    align-items: center;
    opacity: 0.7;
}
.logos-bar > div {
    text-align: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-muted);
    padding: 1rem 0.5rem;
    letter-spacing: -0.01em;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-soft);
}

/* Hero avec photo de fond ajouté */
.hero.hero-photo::before {
    background:
        linear-gradient(135deg, rgba(5, 11, 31, 0.85) 0%, rgba(11, 26, 58, 0.75) 100%),
        radial-gradient(ellipse at 20% 30%, rgba(37, 99, 235, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(6, 182, 212, 0.25) 0%, transparent 50%);
}

/* Photo header pour pages internes */
.page-header.with-photo {
    background-image:
        linear-gradient(135deg, rgba(5, 11, 31, 0.92) 0%, rgba(11, 26, 58, 0.85) 100%),
        var(--hero-bg);
    background-size: cover;
    background-position: center;
}

/* Carrousel témoignages : avatar real */
.testimonial-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--white);
    box-shadow: var(--shadow);
}

/* ============================================
   18. FLOATING ACTIONS (WhatsApp etc.)
   ============================================ */
.floating-actions {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: var(--z-fixed);
}
.float-btn {
    width: 56px; height: 56px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    box-shadow: var(--shadow-xl);
    color: var(--white);
    transition: all var(--transition);
    position: relative;
}
.float-btn:hover { transform: scale(1.08) translateY(-2px); }
.float-btn svg { width: 24px; height: 24px; }
.float-whatsapp { background: #25D366; }
.float-ai { background: var(--grad-accent); }

.float-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid currentColor;
    opacity: 0;
    animation: pulseRing 2s infinite;
}
@keyframes pulseRing {
    0% { opacity: 0.7; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.5); }
}

/* ============================================
   19. PAGE HEADER (sous-pages)
   ============================================ */
.page-header {
    padding-top: calc(var(--nav-height) + 4rem);
    padding-bottom: 4rem;
    background: var(--grad-hero);
    color: var(--white);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(37,99,235,0.25) 0%, transparent 60%);
}
.page-header > .container { position: relative; z-index: 2; }
.page-header h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--white);
    margin-bottom: var(--space-4);
}
.page-header p {
    color: rgba(255,255,255,0.8);
    font-size: var(--text-lg);
    max-width: 720px;
    margin: 0 auto;
}
.breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.65);
    margin-bottom: var(--space-5);
}
.breadcrumb a { color: var(--cyan-400); }
.breadcrumb a:hover { color: var(--white); }

/* ============================================
   20. UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0 !important; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.hidden { display: none !important; }
@media (max-width: 768px) {
    .hidden-mobile { display: none !important; }
}
@media (min-width: 769px) {
    .visible-mobile { display: none !important; }
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Selection */
::selection {
    background: var(--accent);
    color: var(--white);
}

/* Scrollbar (Chromium) */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 6px;
    border: 3px solid var(--gray-100);
}
::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }