/* ============================================================
   JCS2I — Industrial IT | Main Stylesheet
   ============================================================ */

/* ── CSS Custom Properties ───────────────────────────────── */
:root {
    --bg:          #050B18;
    --surface:     #0D1629;
    --surface2:    #111D35;
    --primary:     #0057FF;
    --accent:      #00D4FF;
    --success:     #00FF88;
    --warning:     #FFB800;
    --text:        #E2E8F0;
    --muted:       #64748B;
    --border:      rgba(0,87,255,0.2);
    --border-soft: rgba(255,255,255,0.06);
    --glow:        rgba(0,87,255,0.35);
    --glow-accent: rgba(0,212,255,0.25);
    --radius:      20px;
    --radius-sm:   10px;
    --radius-lg:   28px;
    --shadow:      0 8px 32px rgba(0,0,0,0.5);
    --shadow-lg:   0 20px 60px rgba(0,0,0,0.7);
    --transition:  0.3s cubic-bezier(0.4,0,0.2,1);
    --nav-h:       72px;
    --font:        'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: var(--font); }

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ── Typography ──────────────────────────────────────────── */
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
h3 { font-size: 1.25rem; font-weight: 700; }
h4 { font-size: 1rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: 1rem; }
p  { color: var(--muted); line-height: 1.8; }

.section-label {
    display: inline-block;
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .15em;
    color: var(--accent);
    border: 1px solid rgba(0,212,255,0.3);
    padding: .3rem .8rem;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-title { margin-bottom: .5rem; }
.section-subtitle { color: var(--muted); font-size: 1.1rem; margin-bottom: 3rem; max-width: 600px; }

.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* ── Gradient Text ───────────────────────────────────────── */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-text-warm {
    background: linear-gradient(135deg, var(--warning), #FF6B35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Glassmorphism Card ──────────────────────────────────── */
.glass-card {
    background: rgba(13,22,41,.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,87,255,.04), transparent 60%);
    pointer-events: none;
}
.glass-card:hover {
    border-color: rgba(0,87,255,.5);
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0,87,255,.2), 0 0 0 1px rgba(0,87,255,.15);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn-primary, .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .85rem 2rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: .95rem;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    letter-spacing: .02em;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #0040CC);
    color: #fff;
    border: none;
    box-shadow: 0 4px 20px rgba(0,87,255,.4);
}
.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(0,87,255,.6);
}
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid rgba(255,255,255,.2);
}
.btn-outline:hover {
    background: rgba(255,255,255,.06);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
}
.btn-accent {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .75rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: .9rem;
    background: linear-gradient(135deg, var(--accent), #008FAA);
    color: #050B18;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--glow-accent); }
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .6rem 1.2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: .85rem;
    background: rgba(0,87,255,.12);
    color: var(--accent);
    border: 1px solid rgba(0,87,255,.25);
    transition: var(--transition);
    cursor: pointer;
}
.btn-ghost:hover { background: rgba(0,87,255,.25); }

.cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
    align-items: center;
}

/* ── Animated Hero Background ────────────────────────────── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: var(--nav-h);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--bg);
    z-index: 0;
}
.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,87,255,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,87,255,.07) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 40%, rgba(0,87,255,.18) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 70%, rgba(0,212,255,.12) 0%, transparent 50%),
        radial-gradient(ellipse 40% 40% at 50% 100%, rgba(0,87,255,.1) 0%, transparent 50%);
    animation: glowPulse 8s ease-in-out infinite alternate;
}
@keyframes gridMove {
    0%   { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}
@keyframes glowPulse {
    0%   { opacity: .6; }
    100% { opacity: 1; }
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 820px;
    text-align: center;
    padding: 2rem 1.5rem;
}
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .15em;
    color: var(--accent);
    border: 1px solid rgba(0,212,255,.3);
    padding: .4rem 1rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    animation: fadeInDown .8s ease forwards;
}
.hero-eyebrow .dot {
    width: 6px; height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.2} }
.hero h1 {
    animation: fadeInUp .9s ease .1s both;
    margin-bottom: 1.5rem;
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--muted);
    animation: fadeInUp .9s ease .25s both;
    margin-bottom: 2.5rem;
}
.typing-text {
    color: var(--accent);
    font-weight: 700;
    border-right: 2px solid var(--accent);
    animation: cursor .8s step-end infinite;
    white-space: nowrap;
}
@keyframes cursor { 50% { border-color: transparent; } }
.hero .cta-group { justify-content: center; animation: fadeInUp .9s ease .4s both; }

/* ── Scroll Indicator ────────────────────────────────────── */
.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: fadeInUp 1s ease .8s both;
    cursor: pointer;
}
.scroll-indicator svg {
    animation: scrollBounce 1.8s ease-in-out infinite;
    opacity: .5;
    color: var(--accent);
}
@keyframes scrollBounce {
    0%,100% { transform: translateY(0); opacity: .5; }
    50%      { transform: translateY(8px); opacity: 1; }
}

/* ── Reveal Animations ───────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-left  { opacity:0; transform:translateX(-40px); transition:.7s ease; }
.reveal-right { opacity:0; transform:translateX(40px);  transition:.7s ease; }
.reveal-left.visible,
.reveal-right.visible { opacity:1; transform:translateX(0); }

.delay-1 { transition-delay: .1s !important; }
.delay-2 { transition-delay: .2s !important; }
.delay-3 { transition-delay: .3s !important; }
.delay-4 { transition-delay: .4s !important; }
.delay-5 { transition-delay: .5s !important; }
.delay-6 { transition-delay: .6s !important; }

@keyframes fadeInDown { from { opacity:0; transform:translateY(-20px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeInUp   { from { opacity:0; transform:translateY(20px);  } to { opacity:1; transform:translateY(0); } }

/* ── Navbar ──────────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    z-index: 1000;
    transition: background .35s ease, box-shadow .35s ease, backdrop-filter .35s ease;
}
.navbar.scrolled {
    background: rgba(5,11,24,.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--border), 0 4px 30px rgba(0,0,0,.4);
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}
.nav-logo { display: flex; align-items: center; }
.nav-logo img { height: 50px; width: auto; transition: opacity .2s; }
.nav-logo:hover img { opacity: .85; }
.nav-menu {
    display: flex;
    align-items: center;
    gap: .25rem;
}
.nav-link {
    padding: .5rem .9rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: .95rem;
    color: var(--muted);
    transition: var(--transition);
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 50%; right: 50%;
    height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 2px;
    transition: left .3s ease, right .3s ease;
}
.nav-link:hover, .nav-link.active {
    color: var(--text);
    background: rgba(255,255,255,.05);
}
.nav-link:hover::after, .nav-link.active::after {
    left: .9rem; right: .9rem;
}
.btn-nav-client {
    display: inline-flex;
    align-items: center;
    padding: .55rem 1.3rem;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--primary), #003EBF);
    color: #fff !important;
    font-weight: 700;
    font-size: .9rem;
    margin-left: .5rem;
    transition: var(--transition);
    border: 1px solid rgba(0,87,255,.5);
    box-shadow: 0 2px 12px rgba(0,87,255,.3);
}
.btn-nav-client:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,87,255,.5);
}
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: .4rem;
    border-radius: 6px;
    transition: var(--transition);
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Section Wrapper ─────────────────────────────────────── */
.section { padding: 6rem 1.5rem; }
.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}
.section-intro { margin-bottom: 3.5rem; }

/* ── Stats Section ───────────────────────────────────────── */
.stats-section {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 4rem 1.5rem;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}
.stat-item {
    text-align: center;
    padding: 2rem 1.5rem;
    border-radius: var(--radius);
    background: rgba(255,255,255,.02);
    border: 1px solid var(--border-soft);
    transition: var(--transition);
    position: relative;
}
.stat-item::before {
    content: '';
    position: absolute;
    top: 0; left: 50%; transform: translateX(-50%);
    width: 60px; height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}
.stat-item:hover {
    border-color: var(--border);
    transform: translateY(-4px);
    background: rgba(0,87,255,.05);
}
.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-suffix {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    display: block;
    color: var(--muted);
    font-size: .9rem;
    margin-top: .5rem;
}
.stat-value-row { display: flex; align-items: baseline; justify-content: center; gap: 2px; }

/* ── About / Expertise Section ───────────────────────────── */
.about-section {
    padding: 6rem 1.5rem;
    background: var(--bg);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}
.about-text p { margin-bottom: 1.2rem; }
.about-text p:first-of-type { color: var(--text); font-size: 1.05rem; }
.about-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.about-card {
    background: rgba(13,22,41,.6);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    transition: var(--transition);
}
.about-card:hover {
    border-color: rgba(0,87,255,.5);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,87,255,.15);
}
.about-card-icon {
    width: 44px; height: 44px;
    background: linear-gradient(135deg, rgba(0,87,255,.2), rgba(0,212,255,.1));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
    color: var(--accent);
}
.about-card h4 { color: var(--text); margin-bottom: .4rem; font-size: .95rem; text-transform: none; letter-spacing: 0; }
.about-card p  { font-size: .85rem; }

/* ── Services Section ────────────────────────────────────── */
.services-section {
    padding: 6rem 1.5rem;
    background: var(--surface);
    position: relative;
}
.services-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(0,87,255,.04) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}
.service-card {
    background: rgba(13,22,41,.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: default;
}
.service-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform .35s ease;
    transform-origin: left;
}
.service-card:hover::after { transform: scaleX(1); }
.service-card:hover {
    border-color: rgba(0,87,255,.45);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0,87,255,.2);
    background: rgba(13,22,41,.9);
}
.service-icon {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, rgba(0,87,255,.2), rgba(0,212,255,.1));
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent);
    transition: var(--transition);
}
.service-card:hover .service-icon {
    background: linear-gradient(135deg, rgba(0,87,255,.4), rgba(0,212,255,.2));
    box-shadow: 0 4px 20px var(--glow-accent);
}
.service-card h3 { margin-bottom: .7rem; }
.service-card p  { font-size: .9rem; margin-bottom: 1.2rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1rem; }
.tag {
    font-size: .72rem;
    font-weight: 600;
    padding: .25rem .7rem;
    border-radius: 50px;
    background: rgba(0,87,255,.12);
    color: var(--accent);
    border: 1px solid rgba(0,87,255,.25);
    letter-spacing: .03em;
}

/* ── Paper Sector Section ────────────────────────────────── */
.paper-section {
    padding: 6rem 1.5rem;
    background: linear-gradient(135deg, #0A1428 0%, var(--surface2) 100%);
    position: relative;
    overflow: hidden;
}
.paper-section::before {
    content: '';
    position: absolute;
    top: -50%; left: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(0,87,255,.1) 0%, transparent 70%);
    pointer-events: none;
}
.paper-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}
.paper-feature {
    background: rgba(5,11,24,.5);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    transition: var(--transition);
}
.paper-feature:hover {
    border-color: rgba(0,212,255,.4);
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0,212,255,.1);
}
.paper-feature-icon {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, rgba(0,212,255,.2), rgba(0,87,255,.1));
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent);
}
.paper-feature h3 { margin-bottom: 1rem; font-size: 1.1rem; }
.paper-feature ul { list-style: none; }
.paper-feature ul li {
    color: var(--muted);
    font-size: .9rem;
    padding: .35rem 0;
    border-bottom: 1px solid rgba(255,255,255,.04);
    display: flex; align-items: center; gap: .6rem;
}
.paper-feature ul li::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* ── Solutions / Products Section ────────────────────────── */
.solutions-section {
    padding: 6rem 1.5rem;
    background: var(--bg);
}
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}
.product-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    border-color: rgba(0,87,255,.5);
    transform: translateY(-8px);
    box-shadow: 0 24px 60px rgba(0,87,255,.2);
}
.product-img {
    height: 180px;
    position: relative;
    overflow: hidden;
}
.product-img-inner {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -.02em;
    color: rgba(255,255,255,.15);
}
.product-img-scada  { background: linear-gradient(135deg, #001A66, #0057FF); }
.product-img-mes    { background: linear-gradient(135deg, #001A33, #006633); }
.product-img-conn   { background: linear-gradient(135deg, #001A3D, #00D4FF22); }
.product-img-lite   { background: linear-gradient(135deg, #0A1A44, #2244AA); }
.product-img-anal   { background: linear-gradient(135deg, #001A22, #007744); }
.product-img-maint  { background: linear-gradient(135deg, #1A1200, #FF8800); }
.product-body { padding: 1.8rem; flex: 1; display: flex; flex-direction: column; }
.product-badge {
    display: inline-block;
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    padding: .3rem .8rem;
    border-radius: 50px;
    margin-bottom: 1rem;
}
.badge-scada    { background: rgba(0,87,255,.15);  color: var(--accent);   border: 1px solid rgba(0,87,255,.3);  }
.badge-mes      { background: rgba(0,255,136,.1);  color: var(--success);  border: 1px solid rgba(0,255,136,.3); }
.badge-reseaux  { background: rgba(0,212,255,.1);  color: var(--accent);   border: 1px solid rgba(0,212,255,.3); }
.badge-maint    { background: rgba(255,184,0,.1);  color: var(--warning);  border: 1px solid rgba(255,184,0,.3); }
.product-body h3 { margin-bottom: .6rem; font-size: 1.15rem; }
.product-body > p { font-size: .9rem; margin-bottom: 1.2rem; }
.product-features {
    list-style: none;
    margin-bottom: 1.5rem;
    flex: 1;
}
.product-features li {
    font-size: .85rem;
    color: var(--muted);
    padding: .3rem 0;
    display: flex; align-items: center; gap: .6rem;
    border-bottom: 1px solid rgba(255,255,255,.04);
}
.product-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
}
.product-actions { display: flex; gap: .7rem; flex-wrap: wrap; }

/* ── References Section ──────────────────────────────────── */
.references-section {
    padding: 5rem 1.5rem;
    background: var(--surface);
    text-align: center;
}
.refs-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
    margin: 3rem 0;
}
.ref-logo {
    aspect-ratio: 2/1;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--muted);
    font-weight: 600;
    font-size: .85rem;
    transition: var(--transition);
}
.ref-logo:hover {
    border-color: var(--border);
    background: rgba(0,87,255,.06);
    color: var(--text);
}
.refs-note { color: var(--muted); font-size: .9rem; margin-top: 1rem; }

/* ── News Section ────────────────────────────────────────── */
.news-section {
    padding: 6rem 1.5rem;
    background: var(--bg);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}
.news-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    border-color: rgba(0,87,255,.4);
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0,87,255,.15);
}
.news-img {
    height: 140px;
    position: relative;
    display: flex; align-items: center; justify-content: center;
}
.news-img-1 { background: linear-gradient(135deg, #001A44, #003388); }
.news-img-2 { background: linear-gradient(135deg, #001A22, #005544); }
.news-img-3 { background: linear-gradient(135deg, #1A0A00, #663300); }
.news-date {
    position: absolute;
    top: 1rem; left: 1rem;
    background: rgba(5,11,24,.85);
    border: 1px solid var(--border);
    padding: .3rem .7rem;
    border-radius: 6px;
    font-size: .75rem;
    font-weight: 600;
    color: var(--accent);
}
.news-category {
    position: absolute;
    top: 1rem; right: 1rem;
    background: rgba(0,87,255,.8);
    padding: .25rem .7rem;
    border-radius: 50px;
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #fff;
}
.news-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.news-body h3 { font-size: 1rem; margin-bottom: .6rem; }
.news-body p  { font-size: .875rem; flex: 1; margin-bottom: 1rem; }
.news-read-more {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    color: var(--accent);
    font-weight: 600;
    font-size: .85rem;
    transition: gap .2s ease;
}
.news-read-more:hover { gap: .7rem; }

/* ── CTA Banner ──────────────────────────────────────────── */
.cta-banner {
    padding: 5rem 1.5rem;
    background: linear-gradient(135deg, #001A55 0%, #003399 50%, #0057FF 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
    background-size: 50px 50px;
}
.cta-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(0,212,255,.15), transparent);
    pointer-events: none;
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { color: #fff; margin-bottom: 1rem; }
.cta-banner p  { color: rgba(255,255,255,.7); margin-bottom: 2rem; }
.cta-banner .cta-group { justify-content: center; }
.cta-banner .btn-primary { background: #fff; color: var(--primary); }
.cta-banner .btn-primary:hover { background: #f0f4ff; box-shadow: 0 8px 30px rgba(255,255,255,.3); }
.cta-banner .btn-outline  { border-color: rgba(255,255,255,.4); color: #fff; }
.cta-banner .btn-outline:hover { background: rgba(255,255,255,.1); border-color: #fff; color: #fff; }

/* ── Page Hero (sub-pages) ───────────────────────────────── */
.page-hero {
    padding: calc(var(--nav-h) + 4rem) 1.5rem 4rem;
    background: var(--surface);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(0,87,255,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,87,255,.07) 1px, transparent 1px);
    background-size: 40px 40px;
}
.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(0,87,255,.15), transparent);
    pointer-events: none;
}
.page-hero > * { position: relative; z-index: 1; }
.page-hero h1 { margin-bottom: .8rem; }
.page-hero p  { font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* ── Products Page ───────────────────────────────────────── */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    justify-content: center;
    margin: 3rem 0 2rem;
}
.filter-btn {
    padding: .55rem 1.4rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: .9rem;
    background: rgba(255,255,255,.05);
    color: var(--muted);
    border: 1px solid var(--border-soft);
    transition: var(--transition);
    cursor: pointer;
}
.filter-btn.active,
.filter-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.product-card.hidden { display: none; }

/* ── Forum ───────────────────────────────────────────────── */
.forum-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1.5rem 6rem;
}
.forum-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: .7rem;
}
.forum-section-title::after {
    content: '';
    flex: 1; height: 1px;
    background: var(--border);
}
.forum-thread {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.4rem 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: var(--transition);
}
.forum-thread:hover {
    border-color: rgba(0,87,255,.4);
    background: rgba(13,22,41,.8);
    transform: translateX(4px);
}
.thread-icon {
    width: 42px; height: 42px; flex-shrink: 0;
    background: linear-gradient(135deg, rgba(0,87,255,.2), rgba(0,212,255,.1));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
}
.thread-body { flex: 1; }
.thread-title {
    font-weight: 700;
    color: var(--text);
    font-size: .95rem;
    margin-bottom: .35rem;
    display: block;
    transition: color .2s;
}
.forum-thread:hover .thread-title { color: var(--accent); }
.thread-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: .8rem;
    color: var(--muted);
}
.thread-author { font-weight: 600; color: var(--text); }
.thread-replies {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    background: rgba(0,87,255,.12);
    color: var(--accent);
    border: 1px solid rgba(0,87,255,.2);
    padding: .2rem .7rem;
    border-radius: 50px;
    font-size: .75rem;
    font-weight: 700;
    flex-shrink: 0;
}
.forum-sidebar .glass-card .lock-icon {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, rgba(0,87,255,.2), rgba(0,212,255,.1));
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--accent);
}
.forum-sidebar .glass-card { text-align: center; }
.forum-sidebar .glass-card h3 { margin-bottom: .8rem; }
.forum-sidebar .glass-card p  { font-size: .9rem; margin-bottom: 1.5rem; }
.forum-benefits {
    list-style: none;
    text-align: left;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}
.forum-benefits li {
    font-size: .85rem;
    color: var(--muted);
    padding: .4rem 0;
    display: flex; align-items: center; gap: .6rem;
}
.forum-benefits li::before {
    content: '→';
    color: var(--accent);
    font-weight: 700;
}

/* ── Contact Page ────────────────────────────────────────── */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 1.5rem 6rem;
}
.contact-info-grid { display: flex; flex-direction: column; gap: 1rem; }
.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(13,22,41,.6);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.3rem;
    transition: var(--transition);
}
.contact-info-card:hover { border-color: rgba(0,87,255,.4); }
.contact-icon {
    width: 42px; height: 42px; flex-shrink: 0;
    background: linear-gradient(135deg, rgba(0,87,255,.2), rgba(0,212,255,.1));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
}
.contact-info-text strong { display: block; color: var(--text); font-size: .9rem; margin-bottom: .2rem; }
.contact-info-text span  { color: var(--muted); font-size: .85rem; }
.map-placeholder {
    height: 250px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--surface2), var(--surface));
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    flex-direction: column;
    gap: .5rem;
    color: var(--muted);
    font-size: 1.5rem;
    margin-top: 1.5rem;
}
.map-placeholder span { font-size: .9rem; }

/* ── Contact Form ─────────────────────────────────────────── */
.contact-form-card {
    background: rgba(13,22,41,.6);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}
.contact-form-card h3 { margin-bottom: 1.5rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.2rem; }
.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: .5rem;
}
.form-group label .required { color: var(--accent); margin-left: 2px; }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: .75rem 1rem;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 10px;
    color: var(--text);
    font-size: .9rem;
    transition: var(--transition);
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    background: rgba(0,87,255,.06);
    box-shadow: 0 0 0 3px rgba(0,87,255,.15);
}
.form-group select { cursor: pointer; }
.form-group select option { background: var(--surface); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group input[type="file"] {
    padding: .6rem;
    cursor: pointer;
    font-size: .85rem;
    color: var(--muted);
}
.alert {
    padding: 1rem 1.2rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-size: .9rem;
    font-weight: 600;
}
.alert-success { background: rgba(0,255,136,.1); border: 1px solid rgba(0,255,136,.3); color: var(--success); }
.alert-error   { background: rgba(255,80,80,.1);  border: 1px solid rgba(255,80,80,.3);  color: #ff6b6b; }

/* ── Login Page ──────────────────────────────────────────── */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    background: var(--bg);
    position: relative;
}
.login-page::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 50%, rgba(0,87,255,.15), transparent),
        linear-gradient(rgba(0,87,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,87,255,.04) 1px, transparent 1px);
    background-size: auto, 50px 50px, 50px 50px;
    pointer-events: none;
}
.login-card {
    width: 100%;
    max-width: 420px;
    background: rgba(13,22,41,.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    position: relative;
    z-index: 1;
    box-shadow: 0 30px 80px rgba(0,0,0,.6);
}
.login-logo { display: block; margin: 0 auto 1.5rem; width: 150px; }
.login-card h2 { text-align: center; margin-bottom: 1.8rem; font-size: 1.5rem; }
.login-card .form-group { margin-bottom: 1rem; }
.login-card .btn-primary { width: 100%; justify-content: center; margin-top: .5rem; }
.login-footer-text {
    text-align: center;
    margin-top: 1.5rem;
    font-size: .85rem;
    color: var(--muted);
}
.login-footer-text a { color: var(--accent); font-weight: 600; }
.login-demo-note {
    text-align: center;
    font-size: .75rem;
    color: rgba(100,116,139,.6);
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-soft);
}

/* ── Client Dashboard ─────────────────────────────────────── */
.dashboard {
    padding: calc(var(--nav-h) + 3rem) 1.5rem 6rem;
}
.dashboard-welcome {
    background: linear-gradient(135deg, rgba(0,87,255,.15), rgba(0,212,255,.08));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.dashboard-welcome h2 { margin-bottom: .5rem; }
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}
.dashboard-card { display: flex; flex-direction: column; }
.dashboard-card h3 { margin-bottom: 1.5rem; font-size: 1.1rem; display: flex; align-items: center; gap: .7rem; }
.dashboard-card h3 svg { color: var(--accent); }
.private-thread-list { list-style: none; flex: 1; }
.private-thread-item {
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: .8rem 0;
    border-bottom: 1px solid rgba(255,255,255,.04);
    font-size: .88rem;
    color: var(--text);
    transition: color .2s;
}
.private-thread-item:hover { color: var(--accent); }
.private-thread-item:last-child { border-bottom: none; }
.lock-sm {
    color: var(--warning);
    flex-shrink: 0;
}
.doc-list { list-style: none; flex: 1; }
.doc-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .8rem;
    padding: .8rem 0;
    border-bottom: 1px solid rgba(255,255,255,.04);
    font-size: .88rem;
}
.doc-item:last-child { border-bottom: none; }
.doc-name { display: flex; align-items: center; gap: .6rem; color: var(--text); }
.doc-name svg { color: #FF6B6B; flex-shrink: 0; }
.btn-download {
    padding: .3rem .7rem;
    font-size: .75rem;
    font-weight: 600;
    background: rgba(0,87,255,.12);
    color: var(--accent);
    border: 1px solid rgba(0,87,255,.25);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}
.btn-download:hover { background: rgba(0,87,255,.25); }
.dashboard-footer { max-width: 1200px; margin: 2rem auto 0; text-align: right; }
.dashboard-footer a { color: var(--muted); font-size: .85rem; }
.dashboard-footer a:hover { color: var(--accent); }

/* ── Footer ──────────────────────────────────────────────── */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 4rem 1.5rem 2rem;
}
.footer-container { max-width: 1200px; margin: 0 auto; }
.footer-top {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}
.footer-brand { max-width: 280px; }
.footer-logo { margin-bottom: 1rem; }
.footer-tagline { font-size: .9rem; color: var(--muted); margin-bottom: 1.5rem; line-height: 1.6; }
.footer-social { display: flex; gap: .8rem; }
.social-link {
    width: 38px; height: 38px;
    background: rgba(255,255,255,.06);
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: var(--muted);
    transition: var(--transition);
}
.social-link:hover {
    background: rgba(0,87,255,.2);
    border-color: var(--border);
    color: var(--accent);
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}
.footer-col ul li { margin-bottom: .5rem; }
.footer-col ul li a {
    color: var(--muted);
    font-size: .9rem;
    transition: color .2s;
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    color: var(--muted);
    font-size: .85rem;
    margin-bottom: .8rem;
    line-height: 1.6;
}
.footer-contact-list svg { flex-shrink: 0; margin-top: 2px; color: var(--accent); }
.footer-bottom {
    border-top: 1px solid var(--border-soft);
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.footer-bottom p { font-size: .85rem; color: var(--muted); }
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { font-size: .85rem; color: var(--muted); transition: color .2s; }
.footer-legal a:hover { color: var(--accent); }

/* ── Back to Top ─────────────────────────────────────────── */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), #003EBF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 20px rgba(0,87,255,.4);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .3s, transform .3s;
    z-index: 999;
    cursor: pointer;
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.back-to-top:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 8px 30px rgba(0,87,255,.6);
}

/* ── Utility ─────────────────────────────────────────────── */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.w-full { width: 100%; }

/* ── Mobile Responsive ───────────────────────────────────── */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .paper-features-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .refs-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-top { grid-template-columns: 1fr; gap: 2rem; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { --nav-h: 64px; }
    h1 { font-size: clamp(1.8rem, 6vw, 2.8rem); }
    h2 { font-size: clamp(1.5rem, 4vw, 2rem); }

    .hamburger { display: flex; }
    .nav-menu {
        position: fixed;
        top: var(--nav-h);
        left: 0; right: 0;
        background: rgba(5,11,24,.97);
        backdrop-filter: blur(20px);
        padding: 1.5rem;
        flex-direction: column;
        align-items: stretch;
        gap: .3rem;
        transform: translateY(-110%);
        opacity: 0;
        transition: transform .35s cubic-bezier(0.4,0,0.2,1), opacity .35s ease;
        border-bottom: 1px solid var(--border);
    }
    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
    }
    .nav-link { padding: .85rem 1rem; border-radius: 10px; }
    .btn-nav-client { margin: .5rem 0 0; text-align: center; justify-content: center; border-radius: 10px; }

    .about-cards-grid { grid-template-columns: 1fr 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .paper-features-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .refs-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-layout { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .forum-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .section { padding: 4rem 1rem; }
    .glass-card { padding: 1.5rem; }
    .contact-form-card { padding: 1.8rem; }
}

@media (max-width: 480px) {
    .about-cards-grid { grid-template-columns: 1fr; }
    .refs-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .cta-group { flex-direction: column; }
    .cta-group .btn-primary,
    .cta-group .btn-outline { width: 100%; justify-content: center; }
    .login-card { padding: 2rem 1.5rem; }
}