/* =========================
   VARIABLES & BASE
   ========================= */

:root {
    --dark: #0b1320;
    --dark-soft: #111827;
    --gold: #bfa36a;
    --grey: #6b7280;
    --light: #f9fafb;
    --border: #e5e7eb;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Inter', Arial, sans-serif;
    color: var(--dark-soft);
    background-color: #e2dddd;
    line-height: 1.7;
}

/* =========================
   LIENS & TEXTE
   ========================= */

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

p {
    margin: 0.6em 0;
}

h1, h2, h3, h4 {
    font-weight: 500;
    margin: 0.4em 0;
}

/* =========================
   NAVIGATION
   ========================= */

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(11,19,32,0.96);
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
}

.phv-img {
    /* display: block;      /* supprime l’espace blanc sous l’image */
    margin: 0;
    padding: 0;
    position: absolute;
    top: 50px;
    left: 10px;
}

nav .logo {
    font-size: 0.95rem;
    letter-spacing: 1.2px;
    font-weight: 500;
    color: #ffffff;
}

nav a {
    margin-left: 25px;
    font-size: 0.9rem;
    color: #e5e7eb;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--gold);
}

/* =========================
   HEADER / HERO
   ========================= */

header {
    background:
        linear-gradient(rgba(11,19,32,0.75), rgba(11,19,32,0.75)),
        url("../img/business-aviation-aircraft-management-hero.webp") center/cover no-repeat;
    color: #ffffff;
    padding: 150px 20px 130px;
    text-align: center;
}

header h1 {
    font-size: 2.6rem;
    letter-spacing: 0.4px;
    margin-bottom: 15px;
}

header p {
    font-size: 1.05rem;
    color: #d1d5db;
}

/* =========================
   BOUTONS
   ========================= */

.cta {
    display: inline-block;
    margin-top: 40px;
    padding: 14px 38px;
    border: 1px solid var(--gold);
    color: var(--gold);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.cta:hover {
    background-color: var(--gold);
    color: var(--dark);
}

/* =========================
   SECTIONS GÉNÉRALES
   ========================= */

section {
    max-width: 1200px;
    margin: auto;
    padding: 90px 20px;
}

.intro {
    max-width: 850px;
    margin: auto;
    text-align: center;
    color: var(--grey);
    font-size: 1.05rem;
}

/* =========================
   SERVICES
   ========================= */

.services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.service {
    border: 1px solid var(--border);
    padding: 40px 30px;
    background-color: #ffffff;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.service h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.service p {
    font-size: 0.95rem;
    color: var(--grey);
}

/* =========================
   SECTION FOND SOMBRE
   ========================= */

.dark {
    background-color: var(--dark);
    color: #ffffff;
    text-align: center;
}

.dark p {
    color: #d1d5db;
}

/* =========================
   LISTES (WHY / AVANTAGES)
   ========================= */

ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

/* =========================
   FOOTER
   ========================= */

footer {
    background-color: #020617;
    color: #9ca3af;
    text-align: center;
    padding: 35px 20px;
    font-size: 0.85rem;
}

/* =========================
   FORM FEEDBACK (CONTACT)
   ========================= */

.form-feedback {
    margin-bottom: 20px;
    padding: 12px 16px;
    border-left: 4px solid #0b6623;
    background: #f0fdf4;
    color: #065f46;
    font-weight: 600;
}

/* Caché par défaut */
.hidden {
    display: none;
}

/* =========================
   RESPONSIVE
   ========================= */

@media (max-width: 768px) {

    nav {
        padding: 15px 20px;
        flex-direction: column;
        align-items: flex-start;
    }

    nav a {
        margin-left: 0;
        margin-right: 20px;
    }

    header {
        padding: 130px 20px 100px;
    }

    header h1 {
        font-size: 2.1rem;
    }

    section {
        padding: 50px 20px;
    }
}

/* =========================
   FILIGRANE GLOBAL
   ========================= */

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("../img/watermark.png");
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 90%;
    opacity: 0.10;              /* 🔑 réglage clé */
    pointer-events: none;
    z-index: 0;
}