/* =====================================================================
   Shaiful Islam Reza — Portfolio  ::  Design System
   Palette: Blue + Black + White (tech brand)  ·  Dark + Light mode
   ===================================================================== */
:root{
  --brand:#2563eb; --brand-2:#0ea5e9; --brand-3:#7c3aed;
  --brand-grad:linear-gradient(135deg,#2563eb,#0ea5e9);
  --ink:#0b1020; --ink-2:#111827; --muted:#5b6472;
  --bg:#ffffff; --bg-2:#f4f7fb; --bg-3:#eef2f8;
  --card:#ffffff; --border:#e6ebf3; --shadow:0 10px 30px rgba(16,24,40,.08);
  --shadow-sm:0 4px 14px rgba(16,24,40,.06);
  --text:#1a2230; --text-soft:#5b6472; --heading:#0b1020;
  --radius:16px; --radius-sm:10px; --radius-lg:24px;
  --nav-h:70px;
  --ff:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --fd:'Space Grotesk','Inter',sans-serif;
}
[data-bs-theme=dark]{
  --ink:#e6ebf5; --ink-2:#f1f5fb; --muted:#93a0b4;
  --bg:#0a0f1c; --bg-2:#0e1526; --bg-3:#111a2e;
  --card:#111a2c; --border:#1f2b45; --shadow:0 14px 40px rgba(0,0,0,.5);
  --shadow-sm:0 6px 20px rgba(0,0,0,.4);
  --text:#d6deec; --text-soft:#93a0b4; --heading:#f3f7ff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--ff);background:var(--bg);color:var(--text);line-height:1.65;overflow-x:hidden}
h1,h2,h3,h4,h5,h6{font-family:var(--fd);color:var(--heading);font-weight:700;line-height:1.2}
a{color:var(--brand);text-decoration:none;transition:.2s}
a:hover{color:var(--brand-2)}
img{max-width:100%;height:auto}
.text-gradient{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.skip-link{position:absolute;left:8px;top:8px;z-index:2000;background:var(--brand);color:#fff;padding:.5rem 1rem;border-radius:8px}
.btn{border-radius:var(--radius-sm);font-weight:600;padding:.6rem 1.25rem;transition:.2s}
.btn-lg{padding:.8rem 1.6rem}
.btn-primary{background:var(--brand-grad);border:none;box-shadow:0 8px 20px rgba(37,99,235,.35)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-outline-primary{border:1.5px solid var(--brand);color:var(--brand)}
.btn-outline-primary:hover{background:var(--brand);color:#fff}
.btn-outline-success{border:1.5px solid #16a34a;color:#16a34a}
.btn-outline-success:hover{background:#16a34a;color:#fff}
.section{padding:5.5rem 0}
.section-alt{background:var(--bg-2)}
.pt-0{padding-top:0!important}
.eyebrow{display:inline-block;font-family:var(--fd);text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:600;color:var(--brand);margin-bottom:.75rem}
.section-head{max-width:720px;margin:0 auto 3rem}
.section-title{font-size:clamp(1.7rem,3.4vw,2.5rem)}
.section-lead{color:var(--text-soft);font-size:1.06rem;margin-top:.5rem}

/* ---------- NAVBAR ---------- */
.site-header{position:sticky;top:0;z-index:1030}
.sir-navbar{background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--border);min-height:var(--nav-h)}
.navbar-brand{display:flex;align-items:center;gap:.6rem;color:var(--heading)!important;font-family:var(--fd)}
.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--brand-grad);color:#fff;font-weight:800;font-family:var(--fd);box-shadow:0 6px 16px rgba(37,99,235,.4)}
.brand-text{font-size:1.05rem}
.sir-navbar .nav-link{color:var(--text)!important;font-weight:500;padding:.5rem .9rem!important;border-radius:8px}
.sir-navbar .nav-link:hover,.sir-navbar .nav-link.active{color:var(--brand)!important;background:color-mix(in srgb,var(--brand) 10%,transparent)}
.dropdown-menu{border:1px solid var(--border);box-shadow:var(--shadow);border-radius:12px;background:var(--card)}
.dropdown-item{color:var(--text)}
.dropdown-item:hover{background:var(--bg-2);color:var(--brand)}
.theme-toggle{border:1px solid var(--border);background:var(--bg-2);color:var(--text);width:40px;height:40px;border-radius:10px;display:inline-grid;place-items:center}
.theme-toggle:hover{color:var(--brand);border-color:var(--brand)}
.theme-icon-light{display:none}
[data-bs-theme=dark] .theme-icon-dark{display:none}
[data-bs-theme=dark] .theme-icon-light{display:inline}
.btn-hire{box-shadow:0 8px 18px rgba(37,99,235,.35)}

/* ---------- HERO ---------- */
.hero{position:relative;padding:4.5rem 0 4rem;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg span{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.hero-bg span:nth-child(1){width:420px;height:420px;background:#2563eb55;top:-120px;left:-80px}
.hero-bg span:nth-child(2){width:360px;height:360px;background:#0ea5e955;bottom:-120px;right:-60px}
.hero-bg span:nth-child(3){width:280px;height:280px;background:#7c3aed44;top:40%;left:55%}
.hero .container{position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:color-mix(in srgb,var(--brand) 12%,transparent);color:var(--brand);font-weight:600;font-size:.85rem;padding:.4rem .9rem;border-radius:999px;border:1px solid color-mix(in srgb,var(--brand) 30%,transparent);margin-bottom:1.2rem}
.hero-badge i{animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero-title{font-size:clamp(2.3rem,6vw,3.8rem);margin-bottom:.4rem;letter-spacing:-.02em}
.hero-role{font-family:var(--fd);font-weight:600;color:var(--text);font-size:clamp(1rem,2.2vw,1.3rem);margin-bottom:.8rem}
.hero-tagline{font-size:1.2rem;font-weight:600;color:var(--brand)}
.hero-sub{color:var(--text-soft);font-size:1.05rem;max-width:560px;margin-bottom:1.6rem}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:2.2rem}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;max-width:560px}
.hero-stats .stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem .6rem;text-align:center;box-shadow:var(--shadow-sm)}
.stat-num{font-family:var(--fd);font-size:1.7rem;font-weight:700;color:var(--heading);line-height:1}
.stat-plus{color:var(--brand);font-weight:700;font-size:1.3rem}
.hero-stats small{display:block;color:var(--text-soft);font-size:.72rem;margin-top:.3rem;line-height:1.2}
.hero-visual{position:relative;display:grid;place-items:center;min-height:360px}
.hero-photo{position:relative;width:min(100%,380px);aspect-ratio:7/8;border-radius:var(--radius-lg);overflow:hidden;background:var(--brand-grad);box-shadow:var(--shadow);border:4px solid var(--card)}
.hero-photo img{width:100%;height:100%;object-fit:cover}
.hero-chip{position:absolute;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:12px;padding:.5rem .8rem;font-size:.82rem;font-weight:600;display:flex;align-items:center;gap:.4rem;animation:float 4s ease-in-out infinite}
.hero-chip i{color:var(--brand)}
.chip-1{top:8%;left:-6%}.chip-2{bottom:16%;left:-8%;animation-delay:.8s}.chip-3{bottom:6%;right:-4%;animation-delay:1.5s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- TECH STRIP ---------- */
.tech-strip{background:var(--ink);overflow:hidden;padding:.9rem 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.tech-track{display:flex;gap:3rem;white-space:nowrap;animation:marquee 28s linear infinite;width:max-content}
.tech-item{font-family:var(--fd);color:#9fb3d1;font-weight:600;font-size:1rem;letter-spacing:.03em}
.tech-item::before{content:"◆";color:var(--brand-2);margin-right:1.5rem}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- SERVICE CARDS ---------- */
.service-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.8rem;box-shadow:var(--shadow-sm);transition:.28s;position:relative;overflow:hidden}
.service-card::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--brand-grad);transform:scaleX(0);transform-origin:left;transition:.3s}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand) 40%,var(--border))}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;font-size:1.6rem;color:#fff;background:var(--brand-grad);margin-bottom:1rem;box-shadow:0 8px 18px rgba(37,99,235,.3)}
.service-title{font-size:1.15rem;margin-bottom:.5rem}
.service-desc{color:var(--text-soft);font-size:.92rem;margin-bottom:1rem}
.service-link{font-weight:600;font-size:.9rem;display:inline-flex;align-items:center;gap:.3rem}
.service-link i{transition:.2s}.service-link:hover i{transform:translateX(4px)}
.service-wide{display:flex;gap:1.2rem;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm);transition:.25s}
.service-wide:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.service-wide-icon{flex:0 0 auto;width:60px;height:60px;border-radius:14px;display:grid;place-items:center;font-size:1.7rem;color:#fff;background:var(--brand-grad)}
.service-feats{list-style:none;padding:0;margin:.8rem 0;display:grid;gap:.35rem}
.service-feats li{font-size:.88rem;color:var(--text-soft)}
.service-feats i{color:#16a34a;margin-right:.4rem}

/* ---------- TOOL CARDS ---------- */
.tool-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm);transition:.28s;color:var(--text)}
.tool-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand) 40%,var(--border));color:var(--text)}
.tool-icon{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:1.5rem;color:#fff;background:var(--brand-grad);margin-bottom:1rem;box-shadow:0 8px 18px rgba(37,99,235,.3)}
.tool-body{flex:1}
.tool-title{margin-bottom:.4rem;color:var(--heading)}
.tool-ext{font-size:.75rem;color:var(--text-soft)}
.tool-desc{color:var(--text-soft);font-size:.92rem;margin:0}
.tool-open{margin-top:1rem;font-weight:600;font-size:.9rem;color:var(--brand);display:inline-flex;align-items:center;gap:.3rem}
.tool-open i{transition:.2s}.tool-card:hover .tool-open i{transform:translateX(4px)}

/* ---------- ABOUT / SKILLS ---------- */
.about-text{color:var(--text-soft)}
.about-text p{margin-bottom:1rem}
.lead-text{font-size:1.05rem}
.skills-grid{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.skill-pill{display:flex;align-items:center;gap:.7rem;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:.75rem .9rem;box-shadow:var(--shadow-sm)}
.skill-pill i{font-size:1.3rem;color:var(--brand)}
.skill-meta{flex:1;min-width:0}
.skill-meta>span{font-size:.85rem;font-weight:600;display:block;margin-bottom:.3rem}
.skill-bar{height:6px;background:var(--bg-3);border-radius:99px;overflow:hidden}
.skill-bar i{display:block;height:100%;background:var(--brand-grad);border-radius:99px}
.skill-group{margin-bottom:1.6rem}
.skill-cat{font-size:.95rem;color:var(--brand);text-transform:uppercase;letter-spacing:.06em;font-family:var(--fd);margin-bottom:.8rem}
.skill-row{margin-bottom:.9rem}
.skill-row-top{display:flex;justify-content:space-between;font-size:.9rem;font-weight:600;margin-bottom:.3rem}
.skill-pct{color:var(--brand)}

/* ---------- ABOUT PAGE ---------- */
.about-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow-sm)}
.about-photo{border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:9/10;background:var(--brand-grad);margin-bottom:1rem}
.about-photo img{width:100%;height:100%;object-fit:cover}
.about-facts{list-style:none;padding:0;margin:0;display:grid;gap:.6rem}
.about-facts li{display:flex;align-items:center;gap:.6rem;font-size:.9rem;color:var(--text-soft)}
.about-facts i{color:var(--brand)}

/* ---------- TIMELINE ---------- */
.timeline{position:relative;padding-left:2rem}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--border)}
.timeline-item{position:relative;padding-bottom:1.8rem}
.timeline-dot{position:absolute;left:-2rem;top:0;width:32px;height:32px;border-radius:50%;background:var(--brand-grad);color:#fff;display:grid;place-items:center;font-size:.8rem;box-shadow:0 0 0 4px var(--bg)}
.timeline-date{font-size:.8rem;font-weight:600;color:var(--brand);text-transform:uppercase;letter-spacing:.04em}
.timeline-role{font-size:1.1rem;margin:.2rem 0}
.timeline-company{font-size:.9rem;color:var(--text-soft);font-weight:600}
.timeline-desc{color:var(--text-soft);font-size:.92rem;margin-top:.4rem}

/* ---------- PROJECTS ---------- */
.project-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.28s;display:flex;flex-direction:column}
.project-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.project-thumb{position:relative;display:block;aspect-ratio:16/10;background:var(--bg-3);overflow:hidden}
.project-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.project-card:hover .project-thumb img{transform:scale(1.06)}
.project-thumb-fallback{position:absolute;inset:0;display:grid;place-items:center;font-size:2.6rem;color:var(--brand);background:linear-gradient(135deg,var(--bg-2),var(--bg-3))}
.project-cat{position:absolute;top:.7rem;left:.7rem;background:color-mix(in srgb,var(--ink) 78%,transparent);color:#fff;font-size:.72rem;font-weight:600;padding:.25rem .6rem;border-radius:99px;backdrop-filter:blur(4px)}
.project-featured{position:absolute;top:.7rem;right:.7rem;background:#f59e0b;color:#fff;font-size:.7rem;font-weight:700;padding:.22rem .55rem;border-radius:99px}
.project-body{padding:1.2rem;flex:1;display:flex;flex-direction:column}
.project-title{margin-bottom:.4rem;font-size:1.1rem}
.project-title a{color:var(--heading)}.project-title a:hover{color:var(--brand)}
.project-desc{color:var(--text-soft);font-size:.9rem;flex:1}
.tech-tags{display:flex;flex-wrap:wrap;gap:.35rem;margin:.6rem 0}
.tech-tags span{font-size:.72rem;background:var(--bg-3);color:var(--text-soft);padding:.2rem .55rem;border-radius:6px;font-weight:500}
.project-filter{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-bottom:2.5rem}
.pf-btn{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:99px;padding:.4rem 1.1rem;font-weight:600;font-size:.88rem;transition:.2s}
.pf-btn:hover,.pf-btn.active{background:var(--brand-grad);color:#fff;border-color:transparent}
.project-facts{list-style:none;padding:0;margin:0}
.project-facts li{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px dashed var(--border);font-size:.9rem}
.project-facts span{color:var(--text-soft)}
.project-hero-img{width:100%;max-height:440px;object-fit:cover}

/* ---------- TESTIMONIALS ---------- */
.testimonial-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm);margin:0}
.testimonial-card .stars{color:#f59e0b;margin-bottom:.7rem;font-size:.9rem}
.testimonial-card blockquote{font-size:.98rem;color:var(--text);margin-bottom:1.1rem}
.testimonial-card figcaption{display:flex;align-items:center;gap:.7rem}
.t-avatar,.t-avatar-sm{width:44px;height:44px;border-radius:50%;background:var(--brand-grad);color:#fff;display:grid;place-items:center;font-weight:700;font-family:var(--fd)}
.t-avatar-sm{width:40px;height:40px;flex:0 0 auto}
.testimonial-card figcaption small{display:block;color:var(--text-soft);font-size:.8rem}

/* ---------- BLOG ---------- */
.blog-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.28s;display:flex;flex-direction:column}
.blog-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.blog-thumb{display:block;aspect-ratio:16/9;background:var(--bg-3);position:relative;overflow:hidden}
.blog-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.blog-card:hover .blog-thumb img{transform:scale(1.05)}
.blog-thumb-fallback{position:absolute;inset:0;display:grid;place-items:center;font-size:2.2rem;color:var(--brand);background:linear-gradient(135deg,var(--bg-2),var(--bg-3))}
.blog-body{padding:1.2rem;flex:1;display:flex;flex-direction:column}
.blog-cat{display:inline-block;font-size:.72rem;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}
.blog-title{margin-bottom:.5rem;font-size:1.08rem;line-height:1.35}
.blog-title a{color:var(--heading)}.blog-title a:hover{color:var(--brand)}
.blog-excerpt{color:var(--text-soft);font-size:.9rem;flex:1}
.blog-meta{color:var(--text-soft);font-size:.8rem;margin-top:.7rem}
.blog-sidebar .widget{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem;margin-bottom:1.3rem;box-shadow:var(--shadow-sm)}
.widget-title{font-size:1rem;margin-bottom:.9rem;padding-bottom:.5rem;border-bottom:2px solid var(--brand);display:inline-block}
.widget-cats,.widget-posts{list-style:none;padding:0;margin:0}
.widget-cats li a{display:flex;justify-content:space-between;padding:.5rem 0;color:var(--text);border-bottom:1px dashed var(--border)}
.widget-cats li a:hover,.widget-cats li a.active{color:var(--brand)}
.widget-cats span{background:var(--bg-3);border-radius:99px;padding:0 .5rem;font-size:.78rem}
.widget-posts li{padding:.5rem 0;border-bottom:1px dashed var(--border)}
.widget-posts a{color:var(--text);font-size:.9rem;font-weight:500}.widget-posts a:hover{color:var(--brand)}
.widget-cta{background:var(--brand-grad)!important;color:#fff;border:none!important}
.widget-cta .widget-title{border-color:#fff}
.widget-cta .btn-primary{background:#fff;color:var(--brand)}

/* ---------- SINGLE POST ---------- */
.post-header{margin-bottom:1rem}
.post-title{font-size:clamp(1.8rem,4vw,2.6rem);margin:.5rem 0}
.post-meta{display:flex;flex-wrap:wrap;gap:1rem;color:var(--text-soft);font-size:.85rem}
.post-cover{width:100%;max-height:460px;object-fit:cover}
.rich-content{font-size:1.05rem;color:var(--text)}
.rich-content h2{font-size:1.5rem;margin:1.8rem 0 .8rem}
.rich-content h3{font-size:1.25rem;margin:1.4rem 0 .6rem}
.rich-content p{margin-bottom:1.1rem}
.rich-content ul,.rich-content ol{margin:0 0 1.1rem 1.2rem}
.rich-content li{margin-bottom:.4rem}
.rich-content img{border-radius:var(--radius-sm);margin:1rem 0}
.rich-content blockquote{border-left:4px solid var(--brand);padding:.5rem 1rem;background:var(--bg-2);border-radius:0 8px 8px 0;color:var(--text-soft);margin:1.2rem 0}
.rich-content a{text-decoration:underline}
.rich-content code{background:var(--bg-3);padding:.15rem .4rem;border-radius:5px;font-size:.9em}
.post-tags{display:flex;flex-wrap:wrap;gap:.5rem}
.post-tag{font-size:.8rem;background:var(--bg-3);color:var(--text-soft);padding:.3rem .7rem;border-radius:99px}
.post-tag:hover{background:var(--brand);color:#fff}
.post-share{display:flex;align-items:center;gap:.6rem}
.post-share a{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--bg-3);color:var(--text)}
.post-share a:hover{background:var(--brand);color:#fff}
.author-box{display:flex;gap:1rem;align-items:center;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem}
.author-box img{width:72px;height:72px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.feature-line{display:flex;gap:.6rem;align-items:flex-start;background:var(--bg-2);border:1px solid var(--border);border-radius:10px;padding:.7rem .9rem}
.feature-line i{color:#16a34a;font-size:1.15rem}

/* ---------- ACCORDION ---------- */
.sir-accordion .accordion-item{background:var(--card);border:1px solid var(--border);border-radius:12px!important;margin-bottom:.7rem;overflow:hidden}
.sir-accordion .accordion-button{background:var(--card);color:var(--heading);font-weight:600;font-family:var(--fd)}
.sir-accordion .accordion-button:not(.collapsed){color:var(--brand);background:color-mix(in srgb,var(--brand) 8%,transparent)}
.sir-accordion .accordion-button:focus{box-shadow:none}
.sir-accordion .accordion-body{color:var(--text-soft)}

/* ---------- PAGE HERO / BREADCRUMB ---------- */
.page-hero{padding:3rem 0 2rem;background:var(--bg-2);border-bottom:1px solid var(--border)}
.page-title{font-size:clamp(1.9rem,4.5vw,3rem)}
.page-sub{color:var(--text-soft);max-width:680px;margin-top:.6rem;font-size:1.05rem}
.sir-breadcrumb{background:var(--bg-2);padding:.6rem 0;border-bottom:1px solid var(--border)}
.sir-breadcrumb .breadcrumb{font-size:.85rem;margin:0}
.service-hero{text-align:center}
.service-hero-icon{width:72px;height:72px;margin:0 auto 1rem;border-radius:18px;background:var(--brand-grad);color:#fff;display:grid;place-items:center;font-size:2rem;box-shadow:var(--shadow)}
.service-aside{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow-sm)}
.aside-links{list-style:none;padding:0;margin:0}
.aside-links li{padding:.4rem 0}
.aside-links a{color:var(--text)}.aside-links a:hover{color:var(--brand)}

/* ---------- CTA BAND ---------- */
.cta-band{background:var(--brand-grad);color:#fff;padding:3.5rem 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,3vw,2rem)}
.cta-band p{color:#eaf2ff;margin:0}
.cta-actions{display:flex;gap:.8rem;flex-wrap:wrap}
.cta-band .btn-light{color:var(--brand);font-weight:700}
.cta-band .btn-success{background:#16a34a;border:none}

/* ---------- CONTACT ---------- */
.contact-tile{display:flex;flex-direction:column;gap:.2rem;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem;box-shadow:var(--shadow-sm);color:var(--text);height:100%;transition:.2s}
.contact-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow);color:var(--text)}
.contact-tile i{font-size:1.5rem;color:var(--brand);margin-bottom:.3rem}
.contact-tile span{font-size:.78rem;color:var(--text-soft);text-transform:uppercase;letter-spacing:.05em}
.contact-tile strong{font-size:.95rem;word-break:break-word}
.tile-wa i{color:#25d366}
.contact-form-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.8rem;box-shadow:var(--shadow-sm)}
.form-label{font-weight:600;font-size:.88rem;color:var(--text);margin-bottom:.3rem}
.form-control,.form-select{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:.65rem .85rem}
.form-control:focus,.form-select:focus{background:var(--bg);color:var(--text);border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 18%,transparent)}
.map-wrap{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.map-wrap iframe{display:block}
.form-response:empty{display:none}
.thankyou-icon{font-size:4rem;color:#16a34a}
.error-code{font-family:var(--fd);font-size:clamp(4rem,15vw,9rem);font-weight:700;line-height:1;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-soft)}
.empty-state i{font-size:3rem;color:var(--border);display:block;margin-bottom:1rem}

/* ---------- FOOTER ---------- */
.site-footer{background:var(--ink);color:#c7d2e0;padding-top:1rem}
[data-bs-theme=light] .site-footer{background:#0b1020}
.site-footer h6,.site-footer .fw-bold{color:#fff}
.footer-brand{display:flex;align-items:center;gap:.6rem}
.footer-tagline{color:#9fb0c8;font-size:.92rem}
.footer-heading{font-family:var(--fd);font-size:.9rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem;color:#fff}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:.5rem}
.footer-links a,.footer-contact a{color:#9fb0c8;font-size:.9rem}
.footer-links a:hover,.footer-contact a:hover{color:#fff}
.footer-contact li{display:flex;gap:.5rem;margin-bottom:.6rem;font-size:.9rem;color:#9fb0c8}
.footer-contact i{color:var(--brand-2)}
.footer-socials{display:flex;gap:.6rem}
.footer-socials a{width:38px;height:38px;border-radius:10px;background:#ffffff12;color:#fff;display:grid;place-items:center;transition:.2s}
.footer-socials a:hover{background:var(--brand-grad)}
.footer-newsletter .form-control{background:#ffffff10;border-color:#ffffff22;color:#fff}
.footer-newsletter .form-control::placeholder{color:#7f8ea6}
.footer-bottom{border-top:1px solid #ffffff14;color:#8595ad}
.newsletter-msg.ok{color:#4ade80}.newsletter-msg.err{color:#f87171}

/* ---------- FLOATING / MOBILE ---------- */
.wa-float{position:fixed;right:22px;bottom:22px;width:56px;height:56px;border-radius:50%;background:#25d366;color:#fff;font-size:1.7rem;display:grid;place-items:center;box-shadow:0 8px 24px rgba(37,211,102,.5);z-index:1040;animation:float 3s ease-in-out infinite}
.wa-float:hover{color:#fff;transform:scale(1.08)}
.mobile-action-bar{position:fixed;left:0;right:0;bottom:0;z-index:1040;display:flex;background:var(--card);border-top:1px solid var(--border);box-shadow:0 -6px 20px rgba(0,0,0,.12)}
.mab-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:.15rem;padding:.6rem;font-size:.75rem;font-weight:600;color:var(--text)}
.mab-btn i{font-size:1.25rem}
.mab-call i{color:var(--brand)}.mab-wa{color:#fff;background:#25d366}.mab-wa i{color:#fff}
.back-to-top{position:fixed;right:22px;bottom:88px;width:44px;height:44px;border-radius:50%;border:none;background:var(--brand);color:#fff;display:none;place-items:center;box-shadow:var(--shadow);z-index:1039}
.back-to-top.show{display:grid}
@media (max-width:991px){.wa-float{bottom:78px}.back-to-top{bottom:140px}}

/* ---------- CHATBOT ---------- */
.chatbot{position:fixed;right:22px;bottom:22px;z-index:1050}
@media (max-width:991px){.chatbot{bottom:78px;right:16px}}
.chatbot-launch{width:58px;height:58px;border-radius:50%;border:none;background:var(--brand-grad);color:#fff;font-size:1.5rem;box-shadow:0 10px 26px rgba(37,99,235,.5);display:grid;place-items:center;transition:.2s}
.chatbot-launch:hover{transform:scale(1.08)}
.chatbot-panel{position:absolute;right:0;bottom:72px;width:min(360px,calc(100vw - 32px));background:var(--card);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;max-height:70vh}
.chatbot-head{background:var(--brand-grad);color:#fff;padding:.9rem 1rem;display:flex;justify-content:space-between;align-items:center}
.chatbot-head small{display:block;font-size:.75rem;opacity:.85}
.chatbot-close{background:none;border:none;color:#fff;font-size:1.4rem;line-height:1}
.chatbot-body{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.6rem;background:var(--bg-2);min-height:180px}
.cb-msg{max-width:85%;padding:.55rem .8rem;border-radius:14px;font-size:.9rem;line-height:1.45;white-space:pre-wrap}
.cb-bot{background:var(--card);border:1px solid var(--border);border-bottom-left-radius:4px;align-self:flex-start}
.cb-user{background:var(--brand);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
.cb-typing{align-self:flex-start;color:var(--text-soft);font-size:.85rem}
.chatbot-form{display:flex;gap:.4rem;padding:.7rem;border-top:1px solid var(--border);background:var(--card)}
.chatbot-form input{flex:1;border:1px solid var(--border);border-radius:99px;padding:.55rem .9rem;background:var(--bg);color:var(--text)}
.chatbot-form button{border:none;background:var(--brand-grad);color:#fff;width:42px;border-radius:50%}

/* ---------- ANIMATIONS ---------- */
[data-reveal]{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
[data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}[data-reveal]{opacity:1;transform:none}}

/* ---------- PERFORMANCE: skip rendering off-screen blocks until near viewport ---------- */
.cta-band,.site-footer,.tech-strip{content-visibility:auto;contain-intrinsic-size:auto 320px}
img{height:auto}

/* ---------- RESPONSIVE ---------- */
@media (max-width:991px){
  .section{padding:3.5rem 0}
  .sir-navbar{background:var(--bg)}
  .navbar-collapse{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:1rem;margin-top:.6rem;box-shadow:var(--shadow)}
  body{padding-bottom:58px}
  .cta-inner{flex-direction:column;text-align:center}
}
@media (max-width:575px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .skills-grid{grid-template-columns:1fr}
  .hero-chip{display:none}
}