/**
 * style.css — Technologies Nexios TF Inc.
 * nexiostf.com
 * Copyright 2026 Technologies Nexios TF Inc. — Tous droits réservés.
 */

/* ── Variables ─────────────────────────────────────────────────────── */
:root {
    /* Logo colors — bleu royal → violet, argent */
    --deep-space:     #070b14;
    --night:          #0d1526;
    --slate:          #141f35;
    --slate-mid:      #1c2d4a;

    --royal-blue:     #2563eb;
    --royal-light:    #3b82f6;
    --violet:         #7c3aed;
    --violet-light:   #8b5cf6;
    --indigo:         #4f46e5;

    --silver:         #c8d6e8;
    --silver-dim:     #8fa3bc;
    --frost:          #f0f5ff;

    --accent-cyan:    #38bdf8;
    --accent-emerald: #10b981;

    --gradient-main:  linear-gradient(135deg, var(--royal-blue) 0%, var(--violet) 100%);
    --gradient-hero:  linear-gradient(160deg, var(--deep-space) 0%, #0e1a3a 50%, #160d30 100%);

    --font-display:   'Inter', sans-serif;
    --font-body:      'DM Sans', sans-serif;
    --font-mono:      'JetBrains Mono', monospace;

    --radius:         8px;
    --radius-lg:      16px;
    --transition:     0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ─────────────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--deep-space);
    color: var(--silver);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ── Canvas particles ──────────────────────────────────────────────── */
#particleCanvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.6;
}

/* ── Container ─────────────────────────────────────────────────────── */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* ── Header ────────────────────────────────────────────────────────── */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.2rem 0;
    transition: background var(--transition), backdrop-filter var(--transition);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background: rgba(7, 11, 20, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: rgba(99, 102, 241, 0.15);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo img {
    height: 128px;
    width: auto;
    transition: transform var(--transition);
}
.logo img:hover {
    transform: scale(1.04);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

/* ── Nav ───────────────────────────────────────────────────────────── */
nav { display: flex; gap: 0.5rem; }

nav a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--silver-dim);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: color var(--transition), background var(--transition);
    position: relative;
}
nav a::after {
    content: '';
    position: absolute;
    bottom: 4px; left: 50%;
    width: 0; height: 1px;
    background: var(--gradient-main);
    transform: translateX(-50%);
    transition: width var(--transition);
}
nav a:hover { color: var(--frost); }
nav a:hover::after { width: 60%; }

/* ── Language selector ─────────────────────────────────────────────── */
.lang-selector { position: relative; }

.lang-btn {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--silver-dim);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}
.lang-btn:hover {
    color: var(--frost);
    border-color: var(--violet-light);
    background: rgba(124, 58, 237, 0.15);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--slate);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius);
    min-width: 130px;
    display: none;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
}
.lang-dropdown.active { display: flex; }

.lang-option {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--silver-dim);
    padding: 0.7rem 1rem;
    cursor: pointer;
    border: none;
    background: transparent;
    text-align: left;
    transition: all var(--transition);
}
.lang-option:hover {
    background: rgba(99, 102, 241, 0.12);
    color: var(--frost);
    padding-left: 1.4rem;
}

/* ── Hero ──────────────────────────────────────────────────────────── */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -40%; left: -20%;
    width: 70%; height: 150%;
    background: radial-gradient(ellipse, rgba(37, 99, 235, 0.12) 0%, transparent 65%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%; right: -15%;
    width: 60%; height: 120%;
    background: radial-gradient(ellipse, rgba(124, 58, 237, 0.1) 0%, transparent 65%);
    pointer-events: none;
}

.hero-content {
    padding: 8rem 0 6rem;
    max-width: 780px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--violet-light);
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.25);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 2rem;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent-emerald);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.4); }
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.8vw, 3.4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--frost);
    margin-bottom: 1.5rem;
}

.hero h1 .gradient-text {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--silver-dim);
    max-width: 560px;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

/* ── Buttons ───────────────────────────────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    background: var(--gradient-main);
    border: none;
    padding: 0.85rem 2rem;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
}
.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--silver);
    background: transparent;
    border: 1px solid rgba(200, 214, 232, 0.2);
    padding: 0.85rem 2rem;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
}
.btn-secondary:hover {
    color: var(--frost);
    border-color: var(--royal-light);
    background: rgba(59, 130, 246, 0.08);
    transform: translateY(-2px);
}

/* ── Stats bar ─────────────────────────────────────────────────────── */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.stat-item {
    padding: 1.5rem;
    background: rgba(13, 21, 38, 0.8);
    transition: background var(--transition);
}
.stat-item:hover { background: rgba(37, 99, 235, 0.08); }

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--violet-light);
    margin-bottom: 0.4rem;
}

.stat-value {
    font-size: 0.9rem;
    color: var(--silver);
    font-weight: 500;
}

/* ── Sections ──────────────────────────────────────────────────────── */
section {
    padding: 7rem 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--violet-light);
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    padding: 0.35rem 0.9rem;
    border-radius: 100px;
    margin-bottom: 1.2rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--frost);
    margin-bottom: 1rem;
}

.section-desc {
    max-width: 560px;
    margin: 0 auto;
    color: var(--silver-dim);
    font-size: 1rem;
    line-height: 1.8;
}

/* ── Products ──────────────────────────────────────────────────────── */
#products { background: rgba(13, 21, 38, 0.4); }

.products-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.product-card {
    background: var(--slate);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}
.product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transition: transform var(--transition);
}
.product-card:hover {
    transform: translateY(-4px);
    border-color: rgba(124, 58, 237, 0.3);
    box-shadow: 0 20px 50px rgba(0,0,0,0.4), 0 0 40px rgba(124, 58, 237, 0.06);
}
.product-card:hover::before { transform: scaleX(1); }

.product-icon {
    width: 52px; height: 52px;
    background: var(--gradient-main);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.product-tag {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--violet-light);
    margin-bottom: 0.5rem;
}

.product-name {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--frost);
    margin-bottom: 0.5rem;
}

.product-tagline {
    font-size: 0.82rem;
    color: var(--royal-light);
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}

.product-desc {
    color: var(--silver-dim);
    font-size: 0.92rem;
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    font-size: 0.88rem;
    color: var(--silver-dim);
}
.feature-list li::before {
    content: '▸';
    color: var(--violet-light);
    font-size: 0.7rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

/* ── Values ────────────────────────────────────────────────────────── */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.value-card {
    background: var(--slate);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    padding: 2.2rem;
    text-align: center;
    transition: transform var(--transition), border-color var(--transition);
}
.value-card:hover {
    transform: translateY(-4px);
    border-color: rgba(124, 58, 237, 0.25);
}

.value-icon {
    width: 56px; height: 56px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.2rem;
}

.value-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--frost);
    margin-bottom: 0.7rem;
}

.value-text {
    font-size: 0.9rem;
    color: var(--silver-dim);
    line-height: 1.75;
}

/* ── CTA section ───────────────────────────────────────────────────── */
.cta-section {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
    border-top: 1px solid rgba(99, 102, 241, 0.1);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    text-align: center;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
    color: var(--frost);
    margin-bottom: 1rem;
}
.cta-text {
    max-width: 560px;
    margin: 0 auto 2.5rem;
    color: var(--silver-dim);
    line-height: 1.8;
}

/* ── Contact section ───────────────────────────────────────────────── */
#contact { background: rgba(13, 21, 38, 0.5); }

.contact-wrapper {
    max-width: 640px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-group label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--silver-dim);
}

.form-group input,
.form-group textarea {
    background: var(--slate);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius);
    padding: 0.85rem 1rem;
    color: var(--frost);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--violet-light);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--silver-dim); opacity: 0.5; }

textarea { min-height: 140px; }

.submit-btn {
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    background: var(--gradient-main);
    border: none;
    padding: 0.9rem 2.2rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
}
.submit-btn:hover:not(:disabled) {
    opacity: 0.88;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
}
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.form-status {
    padding: 0.9rem 1.2rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    display: none;
}
.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: #34d399;
}
.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #f87171;
}

/* ── Footer ────────────────────────────────────────────────────────── */
footer {
    background: var(--night);
    border-top: 1px solid rgba(99, 102, 241, 0.1);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo img { height: 80px; margin-bottom: 1rem; }

.footer-about {
    font-size: 0.88rem;
    color: var(--silver-dim);
    line-height: 1.75;
    margin-top: 0.8rem;
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--violet-light);
    margin-bottom: 1.2rem;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }

.footer-col ul li a {
    font-size: 0.88rem;
    color: var(--silver-dim);
    text-decoration: none;
    transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--frost); }

.footer-bottom {
    border-top: 1px solid rgba(99, 102, 241, 0.08);
    padding-top: 2rem;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    color: var(--silver-dim);
    opacity: 0.6;
}

/* ── Scroll reveal animations ──────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .products-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .stats-bar { grid-template-columns: 1fr 1fr; }
    .values-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .form-row { grid-template-columns: 1fr; }
    nav { display: none; }
    .hero-content { padding: 6rem 0 4rem; }
}

@media (max-width: 480px) {
    .stats-bar { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.9rem; }
    .hero-actions { flex-direction: column; }
    .btn-primary, .btn-secondary { text-align: center; justify-content: center; }
}