/* ============================================
   TelecomServer BD - Main Stylesheet v2
   assets/css/style.css
   ============================================ */

:root {
    --primary: #1e40af;
    --secondary: #0ea5e9;
    --dark: #0f172a;
    --dark2: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(30,64,175,.10);
    --shadow-lg: 0 8px 40px rgba(30,64,175,.15);
    --transition: all .3s ease;
}

*, *::before, *::after { box-sizing: border-box; }
body { font-family: 'Hind Siliguri','Inter',sans-serif; color: #1e293b; background:#fff; overflow-x:hidden; }
h1,h2,h3,h4,h5,h6 { font-family:'Inter','Hind Siliguri',sans-serif; font-weight:700; }
a { text-decoration:none; transition:var(--transition); }
.py-section { padding: 5rem 0; }

/* ─── Topbar ─── */
.topbar { font-size:.85rem; border-bottom:1px solid rgba(255,255,255,.08); }
.topbar a { color:rgba(255,255,255,.8); }
.topbar a:hover { color:#fff; }

/* ─── Navbar ─── */
#mainNav { background:var(--primary) !important; padding:.75rem 0; transition:var(--transition); }
#mainNav.scrolled { background:rgba(15,23,42,.97) !important; box-shadow:0 4px 20px rgba(0,0,0,.2) !important; }
.navbar-brand .logo-icon { width:42px;height:42px;background:rgba(255,255,255,.15);border-radius:10px;display:flex;align-items:center;justify-content:center; }
.navbar-nav .nav-link { font-size:.9rem;font-weight:500;color:rgba(255,255,255,.85) !important;border-radius:8px;padding:.45rem .85rem !important;transition:var(--transition); }
.navbar-nav .nav-link:hover,.navbar-nav .nav-link.active { color:#fff !important;background:rgba(255,255,255,.15); }

/* ─── HERO SLIDER ─── */
.hero-slider-wrap { position:relative; width:100%; overflow:hidden; }
.hero-slides-container { position:relative; width:100%; }

.hero-slide {
    display:none;
    position:relative;
    min-height:90vh;
    background-color: var(--dark);
    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;
    transition:opacity .7s ease;
}
.hero-slide.active { display:flex; align-items:center; animation:slideIn .7s ease; }
@keyframes slideIn { from{opacity:0;transform:scale(1.02)} to{opacity:1;transform:scale(1)} }

.hero-overlay { position:absolute;inset:0;z-index:1; }
.hero-gradient-bg {
    position:absolute;inset:0;z-index:0;
    background:linear-gradient(135deg, #0f172a 0%, #1e3a6e 50%, #0f2a5a 100%);
}

/* Animated particles */
.hero-particles { position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none; }
.particle {
    position:absolute;
    width:var(--s);height:var(--s);
    border-radius:50%;
    background:rgba(14,165,233,.25);
    left:var(--x);bottom:-20px;
    animation:floatUp var(--d) var(--del) linear infinite;
}
@keyframes floatUp { to{transform:translateY(-110vh);opacity:0;} }

/* Hero Content */
.hero-content-wrap { position:relative;z-index:3; }
.min-vh-85 { min-height:85vh; }

/* Badge */
.hero-badge {
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(14,165,233,.2);color:var(--secondary);
    border:1px solid rgba(14,165,233,.4);
    padding:.4rem 1.1rem;border-radius:50px;font-size:.82rem;font-weight:600;
    margin-bottom:1.25rem;
}
.pulse-dot {
    width:8px;height:8px;border-radius:50%;background:var(--secondary);flex-shrink:0;
    animation:pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.5)} }

/* Hero Title */
.hero-title {
    font-size:clamp(2rem,4.5vw,3.5rem);
    color:#fff;line-height:1.15;font-weight:800;margin-bottom:1rem;
    text-shadow:0 2px 12px rgba(0,0,0,.3);
}
.hero-title span { color:var(--secondary); }
.hero-title-bn {
    font-size:clamp(1.4rem,3vw,2.4rem);
    color:rgba(255,255,255,.85);font-weight:700;margin-top:.25rem;
}

/* Hero Subtitle */
.hero-subtitle {
    font-size:1.05rem;color:rgba(255,255,255,.8);
    margin-bottom:.5rem;max-width:560px;line-height:1.7;
}
.hero-subtitle-bn {
    font-size:.95rem;color:rgba(255,255,255,.65);
    margin-bottom:1.75rem;max-width:560px;
}
.text-center .hero-subtitle, .text-center .hero-subtitle-bn { margin-left:auto;margin-right:auto; }

/* Hero Buttons */
.hero-btns { display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.75rem; }
.btn-hero-primary {
    background:var(--secondary);border:none;color:#fff;
    padding:.8rem 2rem;border-radius:50px;font-weight:700;font-size:.95rem;
    box-shadow:0 4px 20px rgba(14,165,233,.4);transition:var(--transition);display:inline-flex;align-items:center;
}
.btn-hero-primary:hover { transform:translateY(-3px);box-shadow:0 8px 30px rgba(14,165,233,.55);color:#fff; }
.btn-hero-outline {
    background:transparent;border:2px solid rgba(255,255,255,.45);color:#fff;
    padding:.8rem 2rem;border-radius:50px;font-weight:600;font-size:.95rem;
    transition:var(--transition);display:inline-flex;align-items:center;
}
.btn-hero-outline:hover { border-color:#fff;background:rgba(255,255,255,.12);color:#fff; }

/* Operator pills */
.operator-row { display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.5rem; }
.op-pill {
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
    color:rgba(255,255,255,.9);padding:.3rem .85rem;border-radius:50px;
    font-size:.78rem;font-weight:600;backdrop-filter:blur(4px);
}

/* Floating Info Cards */
.hero-info-cards { padding-left:2rem; }
.hi-card {
    background:rgba(255,255,255,.1);backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.18);border-radius:14px;
    padding:1rem 1.25rem;display:flex;align-items:center;gap:.85rem;
    animation:floatCard 5s ease-in-out infinite;
}
.hi-card:nth-child(2) { animation-delay:1.5s; }
@keyframes floatCard { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
.hi-icon { width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff;flex-shrink:0; }
.hi-card-sm {
    background:rgba(255,255,255,.1);backdrop-filter:blur(10px);
    border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:1rem;
}

/* Slider Controls */
.hero-dots { position:absolute;bottom:1.75rem;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:.5rem; }
.hero-dot {
    width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);border:none;
    cursor:pointer;transition:var(--transition);padding:0;
}
.hero-dot.active { background:#fff;width:28px;border-radius:10px; }

.hero-arrow {
    position:absolute;top:50%;transform:translateY(-50%);z-index:10;
    width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.15);
    backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.25);
    color:#fff;font-size:1.1rem;cursor:pointer;transition:var(--transition);
    display:flex;align-items:center;justify-content:center;
}
.hero-arrow:hover { background:rgba(255,255,255,.3); }
.hero-prev { left:1.25rem; }
.hero-next { right:1.25rem; }

/* Scroll down */
.hero-scroll-down {
    position:absolute;bottom:4.5rem;left:50%;transform:translateX(-50%);z-index:10;
    color:rgba(255,255,255,.6);font-size:1.4rem;
    animation:bounce 2s infinite;
}
.hero-scroll-down:hover { color:#fff; }
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(6px)} }

/* ─── Section Styles ─── */
.section-header { text-align:center;margin-bottom:3rem; }
.section-label { display:inline-block;background:rgba(30,64,175,.08);color:var(--primary);padding:.35rem 1rem;border-radius:50px;font-size:.78rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;margin-bottom:.75rem; }
.section-title { font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;color:var(--dark);margin-bottom:.75rem; }
.section-desc { color:var(--gray);font-size:1rem;max-width:540px;margin:0 auto; }

/* ─── Service Cards ─── */
.service-card { background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:2rem 1.75rem;transition:var(--transition);height:100%; }
.service-card:hover { border-color:var(--primary);transform:translateY(-5px);box-shadow:var(--shadow-lg); }
.service-icon { width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1.25rem; }
.service-card h5 { font-weight:700;font-size:1.05rem;margin-bottom:.5rem; }
.service-card p { color:var(--gray);font-size:.9rem;margin:0; }

/* ─── Stats ─── */
.stats-section { background:linear-gradient(135deg,var(--primary) 0%,#1e3a8a 100%);position:relative;overflow:hidden; }
.stats-section::before { content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E"); }
.stat-item { text-align:center;position:relative;z-index:2; }
.stat-value { font-size:2.8rem;font-weight:800;color:#fff;line-height:1; }
.stat-label { color:rgba(255,255,255,.75);font-size:.9rem;margin-top:.25rem; }
.stat-icon { font-size:2.5rem;color:rgba(255,255,255,.2);margin-bottom:.5rem; }

/* ─── Features ─── */
.feature-item { display:flex;gap:1.25rem;align-items:flex-start;padding:1.25rem;border-radius:var(--radius);transition:var(--transition); }
.feature-item:hover { background:var(--light); }
.feature-icon { width:48px;height:48px;flex-shrink:0;background:rgba(30,64,175,.08);color:var(--primary);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;transition:var(--transition); }
.feature-item:hover .feature-icon { background:var(--primary);color:#fff; }
.feature-body h6 { font-weight:700;margin-bottom:.25rem; }
.feature-body p { color:var(--gray);font-size:.88rem;margin:0; }

/* ─── Testimonials ─── */
.testimonial-card { background:#fff;border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--border);height:100%;position:relative; }
.testimonial-card::before { content:'"';font-size:5rem;color:var(--primary);opacity:.08;position:absolute;top:.5rem;left:1.5rem;font-family:Georgia,serif;line-height:1; }
.testimonial-stars { color:#f59e0b;font-size:1rem;margin-bottom:1rem; }
.testimonial-text { color:var(--gray);font-size:.92rem;margin-bottom:1.25rem; }
.testimonial-author { display:flex;align-items:center;gap:.75rem; }
.testimonial-avatar { width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;flex-shrink:0; }
.testimonial-name { font-weight:700;font-size:.92rem; }
.testimonial-role { color:var(--gray);font-size:.8rem; }

/* ─── FAQ ─── */
.accordion-button { font-weight:600; }
.accordion-button:not(.collapsed) { color:var(--primary);background:rgba(30,64,175,.05); }
.accordion-button:focus { box-shadow:0 0 0 .2rem rgba(30,64,175,.15); }

/* ─── CTA ─── */
.cta-section { background:linear-gradient(135deg,#0f172a 0%,var(--primary) 100%);position:relative;overflow:hidden; }
.cta-section::after { content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(14,165,233,.08);top:-100px;right:-100px; }

/* ─── Page Content ─── */
.page-hero { background:linear-gradient(135deg,var(--primary) 0%,#1e3a8a 100%);padding:4rem 0 3rem;color:#fff; }
.page-hero h1 { font-size:clamp(1.75rem,4vw,2.75rem);color:#fff; }
.page-content { padding:3rem 0; }
.page-content h2 { color:var(--dark);border-left:4px solid var(--primary);padding-left:1rem;margin:1.5rem 0 1rem; }
.page-content p { color:var(--gray);line-height:1.8; }

/* ─── Footer ─── */
.footer { background:#0f172a !important; }
.footer-links li { margin-bottom:.5rem; }
.footer-links a { color:rgba(255,255,255,.55);font-size:.88rem; }
.footer-links a:hover { color:#fff;padding-left:4px; }
.social-icon { width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,.08);color:rgba(255,255,255,.7);display:inline-flex;align-items:center;justify-content:center;transition:var(--transition); }
.social-icon:hover { background:var(--primary);color:#fff;transform:translateY(-2px); }

/* ─── Scroll Top ─── */
.scroll-top { position:fixed;bottom:25px;right:25px;z-index:999;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;border:none;box-shadow:0 4px 16px rgba(30,64,175,.3);display:none;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition); }
.scroll-top.visible { display:flex; }
.scroll-top:hover { transform:translateY(-3px);background:#1d4ed8; }

/* ─── Steps ─── */
.step-item { text-align:center;position:relative;padding:1.5rem 1rem; }
.step-number { width:60px;height:60px;border-radius:50%;background:var(--primary);color:#fff;font-size:1rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;box-shadow:0 4px 16px rgba(30,64,175,.3);position:relative;z-index:2; }
.step-connector { position:absolute;top:2.8rem;left:55%;right:0;height:2px;background:linear-gradient(to right,var(--primary),var(--secondary));z-index:1; }

/* ─── Breadcrumb ─── */
.breadcrumb { background:transparent;padding:0; }
.breadcrumb-item+.breadcrumb-item::before { color:rgba(255,255,255,.5); }
.breadcrumb-item a { color:rgba(255,255,255,.8); }
.breadcrumb-item.active { color:#fff; }

/* ─── Utilities ─── */
.bg-gradient-primary { background:linear-gradient(135deg,var(--primary),#1e3a8a); }
.text-primary { color:var(--primary) !important; }
.btn-primary { background:var(--primary);border-color:var(--primary); }
.btn-primary:hover { background:#1d4ed8;border-color:#1d4ed8; }
.bg-primary { background:var(--primary) !important; }
.border-primary { border-color:var(--primary) !important; }

/* ─── Animations ─── */
@keyframes fadeInUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }
.animate-in { animation:fadeInUp .6s ease forwards; }

/* ─── Responsive ─── */
@media (max-width:768px) {
    .hero-slide { min-height:100svh; }
    .hero-title { font-size:1.9rem; }
    .hero-arrow { display:none; }
    .py-section { padding:3.5rem 0; }
}