/* ============================================
   Liquid Glass — couche visuelle
   Ne remplace pas le contenu, uniquement le rendu.
============================================ */

:root {
    --glass-bg: rgba(255, 255, 255, 0.38);
    --glass-bg-strong: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.55);
    --glass-highlight: rgba(255, 255, 255, 0.7);
    --glass-shadow: 0 10px 40px rgba(79, 120, 130, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.65);
    --glass-blur: blur(22px) saturate(180%);
    --radius-glass: 22px;
    --radius-pill: 999px;
    --shine: radial-gradient(
        420px circle at var(--mx, 50%) var(--my, 0%),
        rgba(255, 255, 255, 0.38),
        transparent 42%
    );
}

[data-theme="dark"] {
    --glass-bg: rgba(36, 48, 52, 0.42);
    --glass-bg-strong: rgba(44, 62, 66, 0.58);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-highlight: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 12px 44px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

html {
    background: var(--background);
}

body {
    background:
        radial-gradient(1200px 700px at 8% -10%, rgba(106, 154, 166, 0.35), transparent 55%),
        radial-gradient(900px 600px at 100% 12%, rgba(79, 120, 130, 0.22), transparent 50%),
        radial-gradient(800px 500px at 50% 100%, rgba(230, 232, 234, 0.5), transparent 55%),
        var(--background);
    overflow-x: hidden;
}

[data-theme="dark"] body {
    background:
        radial-gradient(1000px 640px at 0% 0%, rgba(106, 154, 166, 0.22), transparent 50%),
        radial-gradient(800px 520px at 100% 20%, rgba(79, 120, 130, 0.28), transparent 55%),
        var(--background);
}

/* Orbes liquides */
.liquid-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.liquid-orb {
    position: absolute;
    border-radius: 42% 58% 48% 52%;
    filter: blur(48px);
    opacity: 0.72;
    will-change: transform, border-radius;
    mix-blend-mode: multiply;
}

[data-theme="dark"] .liquid-orb {
    mix-blend-mode: screen;
    opacity: 0.45;
}

.liquid-orb-1 {
    width: 42vw;
    height: 42vw;
    min-width: 280px;
    min-height: 280px;
    top: -12%;
    left: -8%;
    background: linear-gradient(135deg, #6a9aa6, #4F7882 60%, #E6E8EA);
    animation: liquid-morph 18s ease-in-out infinite;
}

.liquid-orb-2 {
    width: 36vw;
    height: 36vw;
    min-width: 240px;
    min-height: 240px;
    top: 28%;
    right: -12%;
    background: linear-gradient(200deg, #8bb5c0, #4F7882, #7C868A);
    animation: liquid-morph 22s ease-in-out infinite reverse;
}

.liquid-orb-3 {
    width: 30vw;
    height: 30vw;
    min-width: 200px;
    min-height: 200px;
    bottom: 8%;
    left: 18%;
    background: linear-gradient(40deg, #E6E8EA, #6a9aa6 70%);
    animation: liquid-morph 16s ease-in-out infinite 1s;
}

.liquid-orb-4 {
    width: 24vw;
    height: 24vw;
    min-width: 180px;
    min-height: 180px;
    bottom: -6%;
    right: 18%;
    background: linear-gradient(160deg, #4F7882, #c5d5d8);
    animation: liquid-morph 20s ease-in-out infinite 2s;
}

@keyframes liquid-morph {
    0%, 100% {
        transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
        border-radius: 42% 58% 48% 52%;
    }
    33% {
        transform: translate3d(4%, 6%, 0) scale(1.08) rotate(8deg);
        border-radius: 58% 42% 62% 38%;
    }
    66% {
        transform: translate3d(-5%, -4%, 0) scale(0.94) rotate(-6deg);
        border-radius: 38% 62% 42% 58%;
    }
}

.hero,
section,
.footer,
.container,
.hero-container {
    position: relative;
    z-index: 1;
}

/* Verre partagé */
.hero-card,
.service-card,
.cert-card,
.formation-item,
.city-tag,
.feature,
.download-btn,
.faq-item,
.contact-card,
.contact-form,
.contact-hours {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.hero-card,
.service-card,
.cert-card,
.formation-item,
.download-btn,
.faq-item,
.contact-card,
.contact-form,
.contact-hours,
.feature,
.city-tag {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.hero-card::before,
.service-card::before,
.cert-card::before,
.formation-item::before,
.download-btn::before,
.faq-item::before,
.contact-card::before,
.contact-form::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: var(--shine);
    opacity: 0.55;
    transition: opacity 0.35s ease;
    z-index: 0;
}

.hero-card > *,
.service-card > *,
.cert-card > *,
.formation-item > *,
.download-btn > *,
.faq-item > *,
.contact-card > *,
.contact-form > * {
    position: relative;
    z-index: 1;
}

/* Navigation flottante */
.navbar {
    position: fixed;
    z-index: 2000;
    top: 14px;
    left: 50%;
    right: auto;
    width: max-content;
    max-width: calc(100% - 36px);
    transform: translateX(-50%);
    padding: 8px 8px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(40px) saturate(200%);
    -webkit-backdrop-filter: blur(40px) saturate(200%);
    border: 1px solid rgba(255, 255, 255, 0.38);
    box-shadow:
        0 8px 32px rgba(79, 120, 130, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

[data-theme="dark"] .navbar {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.28),
        inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.navbar .nav-container {
    max-width: none;
    width: max-content;
    margin: 0;
    padding: 0 8px;
    justify-content: flex-start;
    gap: 28px;
}

.navbar .nav-menu {
    gap: 20px;
}

.navbar.scrolled {
    padding: 8px 8px;
    box-shadow: var(--glass-shadow);
}

.nav-menu a {
    border-radius: var(--radius-pill);
    padding: 6px 10px;
    transition: color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.nav-menu a:hover {
    background: rgba(255, 255, 255, 0.28);
    transform: translateY(-1px);
}

[data-theme="dark"] .nav-menu a:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-nav {
    background: linear-gradient(180deg, rgba(106, 154, 166, 0.95), var(--primary)) !important;
    border: 1px solid rgba(255, 255, 255, 0.28) !important;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
    border-radius: var(--radius-pill) !important;
}

.theme-toggle {
    border-radius: var(--radius-pill);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
}

/* Hero */
.hero {
    padding: 150px 0 90px;
    background: transparent;
}

[data-theme="dark"] .hero {
    background: transparent;
}

.hero::before {
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, rgba(79, 120, 130, 0.18) 0%, transparent 68%);
    animation: liquid-morph 24s ease-in-out infinite;
    filter: blur(20px);
}

.hero-content h1 {
    letter-spacing: -0.03em;
    animation: fade-up 0.9s ease both;
}

.tagline {
    animation: fade-up 0.9s ease 0.12s both;
}

.hero-description {
    animation: fade-up 0.9s ease 0.22s both;
}

.hero-buttons {
    animation: fade-up 0.9s ease 0.32s both;
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-card {
    border-radius: var(--radius-glass);
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s ease;
}

.hero-card:hover {
    transform: translateY(-8px) scale(1.02);
}

/* Boutons */
.btn {
    border-radius: var(--radius-pill);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, background 0.35s ease, color 0.35s ease;
}

.btn-primary {
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
    border: 1px solid rgba(255, 255, 255, 0.28);
    box-shadow: 0 8px 24px rgba(79, 120, 130, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
}

.btn-secondary {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--primary);
}

/* Sections transparentes pour laisser passer le liquide */
.services,
.zone,
.faq {
    background: transparent;
}

.certifications,
.contact {
    background: transparent;
}

.section-title {
    letter-spacing: -0.02em;
}

.service-card,
.cert-card,
.formation-item,
.faq-item,
.contact-card,
.contact-form {
    border-radius: var(--radius-glass);
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s ease, border-color 0.35s ease;
}

.service-card:hover,
.cert-card:hover,
.formation-item:hover,
.hero-card:hover,
.download-btn:hover {
    box-shadow: 0 18px 50px rgba(79, 120, 130, 0.22), inset 0 1px 0 var(--glass-highlight);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.75);
}

.service-icon,
.contact-icon,
.cert-logo,
.formation-icon {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 1px 0 var(--glass-highlight);
    border-radius: 16px;
}

.hero-card .card-icon {
    background: none;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    width: auto;
    height: auto;
    margin: 0 auto 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-card .card-icon::after {
    content: '';
    position: absolute;
    width: 4.8rem;
    height: 4.8rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(106, 154, 166, 0.4) 0%, transparent 72%);
    filter: blur(10px);
    z-index: 0;
    pointer-events: none;
}

.hero-card .card-icon i {
    position: relative;
    z-index: 1;
    opacity: 0.55;
    color: var(--primary);
    filter: drop-shadow(0 10px 18px rgba(79, 120, 130, 0.28));
    mix-blend-mode: multiply;
}

[data-theme="dark"] .hero-card .card-icon i {
    opacity: 0.7;
    mix-blend-mode: screen;
    filter: drop-shadow(0 10px 22px rgba(139, 181, 192, 0.35));
}

.hero-card:hover .card-icon i {
    opacity: 0.8;
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-date {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
}

.city-tag {
    border-radius: var(--radius-pill);
    backdrop-filter: blur(12px);
}

.city-tag.primary {
    background: linear-gradient(180deg, rgba(106, 154, 166, 0.92), var(--primary));
    border-color: rgba(255, 255, 255, 0.28);
}

.zone-map {
    border-radius: var(--radius-glass);
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    background: var(--background);
}

.feature {
    border-radius: 16px;
    padding: 10px 14px;
}

/* Remote : bandeau verre teinté */
.remote {
    background: rgba(79, 120, 130, 0.42);
    backdrop-filter: blur(28px) saturate(160%);
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    border-block: 1px solid rgba(255, 255, 255, 0.22);
}

[data-theme="dark"] .remote {
    background: rgba(61, 93, 101, 0.5);
}

.download-btn {
    border-radius: 20px;
    background: var(--glass-bg-strong);
}

.download-btn:hover {
    transform: translateY(-5px) scale(1.02);
}

.faq-item {
    border-color: var(--glass-border);
}

.faq-item:hover,
.faq-item.active {
    border-color: rgba(255, 255, 255, 0.7);
}

.faq-answer {
    transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1), padding 0.35s ease;
}

.contact-hours {
    background: linear-gradient(180deg, rgba(106, 154, 166, 0.88), rgba(79, 120, 130, 0.92));
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius-glass);
}

.contact-item {
    position: relative;
}

.contact-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 12%;
    right: 12%;
    bottom: 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--glass-border) 20%,
        var(--glass-border) 80%,
        transparent 100%
    );
    opacity: 0.45;
    pointer-events: none;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 4px rgba(79, 120, 130, 0.18);
}

.btn-submit {
    border-radius: var(--radius-pill);
}

/* Footer verre */
.footer {
    background: rgba(44, 62, 66, 0.72);
    backdrop-filter: blur(28px) saturate(140%);
    -webkit-backdrop-filter: blur(28px) saturate(140%);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .footer {
    background: rgba(26, 31, 33, 0.72);
}

.floating-contact-btn {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.floating-contact-phone {
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
}

/* Révélation au scroll */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card.visible,
.cert-card.visible,
.hero-card.visible,
.faq-item.visible,
.formation-item.visible,
.formation.visible,
.download-btn.visible,
.contact-card.visible,
.contact-form.visible,
.contact-hours.visible,
.zone-info.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

@media (max-width: 768px) {
    .navbar {
        position: fixed;
        z-index: 2000;
        top: 8px;
        left: 50%;
        right: auto;
        width: max-content;
        max-width: calc(100% - 20px);
        transform: translateX(-50%);
        border-radius: 20px;
        padding: 8px 8px;
    }

    .navbar .nav-container {
        width: max-content;
        justify-content: flex-start;
        gap: 20px;
    }

    .nav-menu {
        top: 72px;
        left: 10px;
        right: 10px;
        border-radius: var(--radius-glass);
        background: rgba(245, 246, 247, 0.96) !important;
        backdrop-filter: blur(24px) saturate(160%);
        -webkit-backdrop-filter: blur(24px) saturate(160%);
        border: 1px solid var(--glass-border);
    }

    [data-theme="dark"] .nav-menu {
        background: rgba(26, 31, 33, 0.96) !important;
    }

    .liquid-orb {
        filter: blur(36px);
        opacity: 0.5;
    }

    .hero {
        padding: 128px 0 60px;
    }

    .hero-visual,
    .hero-visual .hero-card {
        display: none !important;
        visibility: hidden !important;
        height: 0 !important;
        overflow: hidden !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .liquid-orb,
    .hero::before,
    .hero-content h1,
    .tagline,
    .hero-description,
    .hero-buttons {
        animation: none !important;
    }

    .reveal,
    .hero-card,
    .service-card,
    .cert-card,
    .download-btn,
    .btn {
        transition: none !important;
    }
}

@media screen and (max-width: 1024px),
       screen and (max-device-width: 1024px),
       screen and (hover: none) and (pointer: coarse) and (max-width: 1366px) {
    .hero-visual {
        display: none !important;
        visibility: hidden !important;
        height: 0 !important;
        max-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: hidden !important;
        pointer-events: none !important;
    }
}