/* ==========================================================
   LUMINA ENERGY — Feuille de style
   Palette : navy #0B1E36, feuille #1E8E4F, soleil #F5A623,
             ciel #EAF4FF, blanc #FFFFFF
   Typo : Poppins (display) + Inter (texte courant)
   ========================================================== */

:root {
    --navy: #0B1E36;
    --navy-light: #16304F;
    --leaf: #1E8E4F;
    --leaf-dark: #146238;
    --sun: #F5A623;
    --sun-light: #FFD98A;
    --sky: #EAF4FF;
    --white: #FFFFFF;
    --ink-soft: #4A5A6A;
    --danger: #C0392B;
    --radius-lg: 22px;
    --radius-md: 14px;
    --shadow: 0 20px 45px -20px rgba(11, 30, 54, 0.35);
    --font-display: 'Poppins', 'Segoe UI', sans-serif;
    --font-body: 'Inter', 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--navy);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

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

h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.15;
    margin: 0 0 0.5em;
}

.container {
    width: min(1140px, 92%);
    margin: 0 auto;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--leaf-dark);
    background: rgba(30, 142, 79, 0.1);
    padding: 6px 14px;
    border-radius: 999px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.98rem;
    padding: 14px 28px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--sun) 0%, #F08A1E 100%);
    color: var(--navy);
    box-shadow: 0 14px 30px -12px rgba(245, 166, 35, 0.65);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -12px rgba(245, 166, 35, 0.75); }

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.55);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); }

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(11,30,54,0.06);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 48px; width: auto; }
.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--navy-light);
}
.main-nav a:hover { color: var(--leaf-dark); }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    background: radial-gradient(1200px 600px at 85% -10%, rgba(245,166,35,0.25), transparent 60%),
                linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
    overflow: hidden;
    padding: 88px 0 110px;
}
.hero .container {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 50px;
    align-items: center;
}
.hero h1 {
    font-size: clamp(2.1rem, 4vw, 3.15rem);
    font-weight: 700;
}
.hero h1 span { color: var(--sun); }
.hero p.lead {
    font-size: 1.08rem;
    color: rgba(255,255,255,0.82);
    max-width: 46ch;
    margin-bottom: 30px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }

/* Signature element: solar "charge meter" ambient bar */
.charge-meter {
    display: flex;
    align-items: center;
    gap: 14px;
    max-width: 420px;
}
.charge-meter .track {
    flex: 1;
    height: 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.14);
    overflow: hidden;
    position: relative;
}
.charge-meter .fill {
    position: absolute;
    inset: 0;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--leaf) 0%, var(--sun) 100%);
    animation: chargeFill 3.2s ease-out forwards;
    animation-delay: 0.4s;
}
.charge-meter .label {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.75);
    white-space: nowrap;
}
@keyframes chargeFill {
    to { width: 92%; }
}

.hero-visual {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    aspect-ratio: 4/5;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-stat-card {
    position: absolute;
    bottom: 18px;
    left: 18px;
    right: 18px;
    background: rgba(11,30,54,0.72);
    backdrop-filter: blur(6px);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    display: flex;
    justify-content: space-between;
    gap: 10px;
}
.hero-stat-card .stat b { display: block; font-family: var(--font-display); font-size: 1.25rem; color: var(--sun); }
.hero-stat-card .stat span { font-size: 0.74rem; color: rgba(255,255,255,0.75); }

/* ---------- Sections generic ---------- */
section { padding: 90px 0; }
.section-head { max-width: 640px; margin: 0 auto 50px; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.section-head p { color: var(--ink-soft); }

/* ---------- Services ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.service-card {
    background: var(--sky);
    border-radius: var(--radius-lg);
    padding: 32px 26px;
    border: 1px solid rgba(11,30,54,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card .icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: var(--navy);
    color: var(--sun);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 18px;
}
.service-card h3 { font-size: 1.15rem; }
.service-card p { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }

/* ---------- Process (numbered — real sequence) ---------- */
.process { background: var(--navy); color: var(--white); }
.process .section-head p { color: rgba(255,255,255,0.7); }
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    counter-reset: step;
}
.process-step {
    position: relative;
    padding: 30px 22px;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
}
.process-step::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--sun);
    display: block;
    margin-bottom: 14px;
}
.process-step h4 { font-size: 1.02rem; margin-bottom: 8px; }
.process-step p { font-size: 0.9rem; color: rgba(255,255,255,0.68); margin: 0; }

/* ---------- Why us ---------- */
.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.why-grid img { border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.why-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.why-list li { display: flex; gap: 14px; align-items: flex-start; }
.why-list .bullet {
    width: 30px; height: 30px; flex: none;
    border-radius: 50%;
    background: var(--leaf);
    color: var(--white);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: 700;
}
.why-list h4 { margin: 0 0 2px; font-size: 1rem; }
.why-list p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- Contact / Lead form ---------- */
.contact {
    background: var(--sky);
}
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 50px;
    align-items: flex-start;
}
.contact-info h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
.contact-info p { color: var(--ink-soft); }
.contact-details { list-style: none; margin: 30px 0 0; padding: 0; display: grid; gap: 16px; }
.contact-details li { display: flex; gap: 12px; align-items: flex-start; font-size: 0.95rem; }
.contact-details .ic {
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--leaf); color: var(--white);
    display: flex; align-items: center; justify-content: center; flex: none;
}

.lead-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
}
.lead-form h3 { font-size: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--navy-light);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1.5px solid #DCE4EC;
    font-family: var(--font-body);
    font-size: 0.95rem;
    background: var(--white);
    color: var(--navy);
    transition: border-color 0.15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--leaf);
}
.form-group textarea { resize: vertical; min-height: 90px; }
.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 4px;
    min-height: 1em;
}
.form-note { font-size: 0.78rem; color: var(--ink-soft); margin-top: 14px; }

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    margin-bottom: 20px;
}
.alert-success { background: rgba(30,142,79,0.12); color: var(--leaf-dark); border: 1px solid rgba(30,142,79,0.3); }
.alert-error { background: rgba(192,57,43,0.1); color: var(--danger); border: 1px solid rgba(192,57,43,0.3); }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--navy);
    color: rgba(255,255,255,0.65);
    padding: 40px 0;
    font-size: 0.85rem;
}
.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}
.site-footer a:hover { color: var(--sun); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero .container { grid-template-columns: 1fr; }
    .hero-visual { max-width: 480px; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .process-steps { grid-template-columns: 1fr 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
    .main-nav { display: none; }
    .services-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .hero { padding: 60px 0 80px; }
    section { padding: 60px 0; }
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .charge-meter .fill { animation: none; width: 92%; }
    html { scroll-behavior: auto; }
}

/* Visible keyboard focus everywhere */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2.5px solid var(--sun);
    outline-offset: 2px;
}