/* ====== VARIABLES & BASE ====== */
:root{
    /* UPGRADE: Tweak Base Colors for modern depth */
    --bg-start: #e0e6f1; 
    --bg-end: #d1d8e6;
    --bg-main: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%);

    --sidebar-w-expanded:260px; --sidebar-w-collapsed:72px;
    --sidebar-bg-1:#0a2a36; --sidebar-bg-2:#0d3642;
    --accent:#0d9488; --accent-2:#14b8a6; --accent-light:#ccfbf1;
    --text-main:#0e1a20; --text-muted:#5a6970;
    --radius-xl:22px; --radius-lg:12px;
    
    /* UPGRADE: Redefine shadows using a primary RGB color for consistency and subtle depth */
    --shadow-primary-color: 15, 23, 42; 
    --shadow-soft: 0 16px 40px rgba(var(--shadow-primary-color), 0.15);
    --shadow-md: 0 8px 24px rgba(var(--shadow-primary-color), 0.1);

    --header-h:64px; --spacing-xs:12px; --spacing-sm:16px; --spacing-md:24px; --spacing-lg:32px;
    
    /* UPGRADE: Card background for Glassmorphism effect */
    --box-bg-gradient-start: rgba(255, 255, 255, 0.7);
    --box-bg-gradient-end: rgba(255, 255, 255, 0.5);
    --box-border:rgba(70,80,100,0.12);
    --border-inner-light: rgba(255, 255, 255, 0.8); /* Light reflection border */
}
html{scroll-behavior:smooth}
*,*::before,*::after{box-sizing:border-box}
body{
    margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial;line-height:1.6;
    background:var(--bg-main);color:var(--text-main);-webkit-font-smoothing:antialiased;
    min-height:100vh;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;background:none;border:0;cursor:pointer}

/* UPGRADE: Custom Scrollbar Styling (Optional, Webkit only) */
body::-webkit-scrollbar { width: 10px; }
body::-webkit-scrollbar-track { background: var(--bg-end); }
body::-webkit-scrollbar-thumb { 
    background: #a9b5c7; 
    border-radius: 5px;
    border: 2px solid var(--bg-end); 
}
body::-webkit-scrollbar-thumb:hover { background: #8e9aae; }


/* ===== SIDEBAR ===== */
/* NOTE: changed to flex column so we can push CTA to bottom */
.desktop-sidebar{
    display:flex;
    flex-direction: column;
    position:fixed;
    left:0;
    top:0;
    bottom:0;
    width:var(--sidebar-w-expanded);
    background:linear-gradient(180deg,var(--sidebar-bg-1),var(--sidebar-bg-2));
    color:#fff;
    padding:20px 14px 14px 14px;
    z-index:60;
    overflow:hidden;
    box-shadow:4px 0 24px rgba(2,6,23,0.25);
    transition:width .22s;
}
.desktop-sidebar.collapsed{width:var(--sidebar-w-collapsed)}
.sidebar-brand{margin-bottom:10px;display:flex;align-items:center}
.sidebar-logo{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 6px 18px rgba(0,0,0,.18)}
/* allow nav to grow and scroll if content gets long */
.sidebar-nav{margin-top:14px;display:flex;flex-direction:column;gap:6px; flex:1; overflow:hidden;}
.sidebar-link{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;color:rgba(255,255,255,.95);font-weight:600;
    transition:all .12s;position:relative;cursor:pointer}
.sidebar-link:hover{background:rgba(255,255,255,0.08);transform:translateX(4px)}

/* UPGRADE: Active Link Polish */
.sidebar-link.active{
    background:rgba(13,148,136,0.2);
    border-left:3px solid var(--accent);
    padding-left:7px;
    text-shadow: 0 0 2px rgba(255, 255, 255, 0.4); /* subtle text shadow */
    box-shadow: inset 0 0 8px rgba(13, 148, 136, 0.4); /* Inner glow */
}
.sidebar-link svg.icon{width:22px;height:22px;flex-shrink:0;opacity:.98}
.sidebar-link .label{white-space:nowrap}
/* keep CTA styling but we'll push it to bottom with margin-top:auto */
.sidebar-cta{margin-top:auto;padding:12px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));
    color:#fff;text-align:center;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s;flex-shrink:0}
.sidebar-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(13,148,136,.3)}
.sidebar-quick{margin-top:12px;margin-bottom:12px;font-size:.85rem;color:rgba(255,255,255,.85);flex-shrink:0}

/* ensure CTA is pinned to bottom inside sidebar */
.desktop-sidebar .sidebar-cta { 
    margin-top: auto !important; 
    margin-bottom: 0 !important;
}

/* keep collapse behaviour */
.desktop-sidebar.collapsed .sidebar-link{justify-content:center;padding:12px 6px}
.desktop-sidebar.collapsed .sidebar-link .label{display:none}
.desktop-sidebar.collapsed .sidebar-cta{display:none}
.desktop-sidebar.collapsed .sidebar-link::after{
    content:attr(data-label);position:absolute;left:calc(var(--sidebar-w-collapsed) + 12px);top:50%;transform:translateY(-50%);
    background:rgba(2,6,23,.92);color:#fff;padding:8px 10px;border-radius:8px;white-space:nowrap;font-size:.85rem;opacity:0;pointer-events:none;
    box-shadow:0 6px 18px rgba(2,6,23,.4);transition:opacity .12s,transform .12s}
.desktop-sidebar.collapsed .sidebar-link:hover::after,
.desktop-sidebar.collapsed .sidebar-link:focus::after{opacity:1;transform:translateY(-50%) translateX(4px)}

/* collapse handle */
.collapse-handle{position:fixed;top:50%;transform:translateY(-50%);z-index:70;width:44px;height:52px;border-radius:8px;
    background:linear-gradient(180deg, rgba(2,6,23,0.9), rgba(2,6,23,0.8));display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 18px rgba(2,6,23,0.35);color:#fff;cursor:pointer;transition:left .18s}
.collapse-handle.expanded{left:calc(var(--sidebar-w-expanded) - 22px)}
.collapse-handle.collapsed{left:calc(var(--sidebar-w-collapsed) + 8px)}
.collapse-handle svg{width:20px;height:20px;transition:transform .18s ease}
.collapse-handle.collapsed svg{transform:rotate(180deg)}
@media (max-width:1023px){.collapse-handle{display:none!important}}

/* Mobile sidebar */
.sidebar-menu{position:fixed;top:0;left:-100%;width:100%;max-width:100%;height:100%;background:linear-gradient(180deg,var(--sidebar-bg-1),var(--sidebar-bg-2));
    z-index:100;display:flex;flex-direction:column;padding-top:var(--header-h);transition:left .3s;overflow-y:auto}
.sidebar-menu.active{left:0;width:100%;}
.sidebar-item{padding:16px 24px;color:rgba(255,255,255,.9);font-weight:600;font-size:1rem;text-align:left;background:none;border-left:3px solid transparent;cursor:pointer}
.sidebar-item:hover{background:rgba(255,255,255,.08)}
.sidebar-item.active{background:rgba(13,148,136,.2);border-left-color:var(--accent)}
.sidebar-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0);z-index:99;transition:background .3s;opacity:0;pointer-events:none}
.sidebar-overlay.active{background:rgba(0,0,0,.5);opacity:1;pointer-events:auto}

/* CSS for preventing scroll when mobile menu is open (used by JS) */
body.noscroll { overflow: hidden; }

/* ===== HEADER ===== */
header{background:linear-gradient(to right,#0f172a,#1a2a3a);position:sticky;top:0;z-index:50;box-shadow:0 4px 12px rgba(15,23,42,.4);height:var(--header-h)}
.nav{max-width:1200px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 16px;position:relative}
.site-title{position:absolute;left:50%;transform:translateX(-50%);text-align:center;pointer-events:none;color:#fff}
.site-title .title{font-weight:800;font-size:1.1rem}
.site-title .subtitle{font-size:.8rem;color:#cbd5e1;margin-top:2px}
.nav-left{display:flex;gap:12px;align-items:center;min-width:48px}
.brand-logo{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
@media (min-width:1024px){.brand-logo{display:none}}
.top-nav{margin-left:auto;display:flex;align-items:center;gap:20px}
.top-nav ul{list-style:none;display:flex;gap:18px;align-items:center;padding:0;margin:0}
.nav-link{color:#e5e7eb;font-size:.95rem;padding:8px 0;border-bottom:2px solid transparent;transition:all .2s;cursor:pointer}
.nav-link:hover{color:#fff;border-bottom-color:var(--accent)}
.nav-link.active{color:#fff;border-bottom-color:var(--accent)}
.menu-btn{display:none;font-size:1.5rem;color:#fff;cursor:pointer}

/* ===== PAGE & HERO ===== */
.page{max-width:1120px;margin:auto;padding:20px 16px 40px;transition:margin-left .22s}
main.wrapper{padding-top:12px}
@media (min-width:1024px){
    .desktop-sidebar{display:block}
    header .nav{max-width:calc(100% - var(--sidebar-w-expanded));margin-left:var(--sidebar-w-expanded);transition:margin-left .22s}
    .page{max-width:calc(100% - var(--sidebar-w-expanded));margin-left:var(--sidebar-w-expanded)}
    body.sidebar-collapsed header .nav{max-width:calc(100% - var(--sidebar-w-collapsed));margin-left:var(--sidebar-w-collapsed)}
    body.sidebar-collapsed .page{max-width:calc(100% - var(--sidebar-w-collapsed));margin-left:var(--sidebar-w-collapsed)}
}

/* UPGRADE: Section and Card Base Styling (Glassmorphism) */
.hero,
.section,
.service-card,
.project-card{
    /* UPGRADE: Translucent background */
    background:linear-gradient(180deg, var(--box-bg-gradient-start), var(--box-bg-gradient-end)); 
    box-shadow:var(--shadow-soft);
    border:1px solid var(--box-border);
    /* UPGRADE: Slightly increased blur effect */
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    position:relative; /* Needed for the reflection pseudo-element */
}

/* UPGRADE: Inner Border/Light Reflection for Glassmorphism */
.section::before,
.hero::before,
.service-card::before,
.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    box-shadow: inset 0 0 0 1px var(--border-inner-light);
    pointer-events: none;
    border-radius: inherit;
}



.hero{margin-top:var(--spacing-md);padding:60px 26px;border-radius:var(--radius-xl);text-align:center;animation:fadeInDown .8s ease}
@keyframes fadeInDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}

.home-logo{width:180px;max-width:85%;height:auto;margin-bottom:20px;filter:drop-shadow(0 8px 20px rgba(0,0,0,.12));animation:float 3s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-20px)}}
.hero-title{font-size:2.4rem;font-weight:800;background:linear-gradient(135deg,var(--accent),#0b766b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:16px;line-height:1.2;animation:slideInUp .8s ease .2s backwards}
.hero-sub{color:var(--text-muted);margin-bottom:20px;font-size:1.05rem;animation:slideInUp .8s ease .4s backwards}
@keyframes slideInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:20px}
.hero-tags span{background:linear-gradient(135deg,var(--accent-light),rgba(204,251,241,.6));color:var(--accent);padding:8px 16px;border-radius:20px;font-size:.9rem;font-weight:600;border:1px solid rgba(13,148,136,.2);transition:all .3s}
.hero-tags span:hover{transform:translateY(-5px);box-shadow:0 8px 20px rgba(13,148,136,.2);background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}

/* UPGRADE: Button Hover/Shadow Polish */
.btn-main{
    display:inline-block;
    background:linear-gradient(135deg,var(--accent),var(--accent-2));
    color:#fff;
    padding:14px 32px;
    border-radius:28px;
    font-weight:700;
    font-size:1rem;
    transition:all .3s cubic-bezier(0.25, 0.8, 0.25, 1); /* Smoother transition */
    box-shadow:0 6px 20px rgba(13,148,136,.4); /* Slightly stronger base shadow */
    border:none;cursor:pointer;animation:slideInUp .8s ease 1s backwards
}
/* === NEW: NUDGE CTA DOWN IN HERO ===
     small, safe adjustment so "Call for Enquiry" sits lower
     This targets the button when it appears inside the .hero section */
.hero .btn-main {
    margin-top: 36px;
}

.btn-main:hover{
    transform:translateY(-4px); /* Increased lift */
    /* Stronger, colorful shadow for pop */
    box-shadow:0 18px 40px rgba(13,148,136,.5), 0 0 0 2px #fff;
}
.btn-main:active{transform:translateY(-1px)}

/* SECTIONS & CARDS */
.section{margin-top:var(--spacing-lg);padding:32px;border-radius:var(--radius-xl);animation:fadeIn .6s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

.section-title{font-size:1.8rem;margin-bottom:8px;font-weight:800;color:var(--text-main)}
.section-sub{color:var(--accent);font-size:1rem;margin-bottom:20px;font-weight:600}
.about-text{color:var(--text-muted);font-size:1rem;line-height:1.8}
.about-text p{margin-bottom:var(--spacing-md)}

.clients-grid{margin-top:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.client-card{padding:20px;border-radius:var(--radius-lg);background:linear-gradient(180deg, rgba(229,245,241,.95), rgba(240,251,249,.98));border:1px solid rgba(13,148,136,.12);text-align:center;font-weight:700;color:var(--accent);transition:all .3s;font-size:.95rem}
.client-card:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(13,148,136,.15);border-color:rgba(13,148,136,.2)}

.services-grid{margin-top:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}

/* UPGRADE: Removed redundant background from card since it's applied via the shared class above */
.service-card,.project-card{border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;}

.service-img{width:100%;height:180px;object-fit:cover;display:block;transition:transform .4s cubic-bezier(.2,.8,.2,1)}

.project-img{
    width:100%;
    height:180px; 
    object-fit: cover; 
    display:block;
    transition:transform .4s cubic-bezier(.2,.8,.2,1)
}

.service-card:hover,.project-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(15,23,42,.15)}
.service-card:hover .service-img,.project-card:hover .project-img{transform:scale(1.08)}
.service-body{padding:20px}
.service-title-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.service-name{font-weight:700;font-size:1.05rem;color:var(--text-main)}
.service-pill{background:linear-gradient(135deg,var(--accent-light),rgba(204,251,241,.5));color:var(--accent);padding:4px 12px;border-radius:12px;font-size:.8rem;font-weight:600;border:1px solid rgba(13,148,136,.15)}
.service-body ul{list-style:none;padding-left:0;color:var(--text-muted);font-size:.9rem}
.service-body li{padding:6px 0;line-height:1.5}

/* PROJECTS GRID: Updated to enforce 3 columns on desktop (min-width 900px) */
.projects-grid{
    margin-top:20px;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:20px
}

@media (min-width: 900px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr); 
    }
}


.project-body{padding:18px;color:var(--text-muted);font-size:.95rem;line-height:1.6;min-height:60px;display:flex;align-items:center}

.contact-card{margin-bottom:16px;color:var(--text-muted);font-size:1rem;padding:16px;border-left:4px solid var(--accent);background:linear-gradient(180deg, rgba(204,251,241,.7), rgba(230,254,249,.95));border-radius:var(--radius-lg);box-shadow:0 4px 12px rgba(11,18,32,.04);transition:all .3s}
.contact-card:hover{transform:translateX(4px);box-shadow:0 8px 20px rgba(13,148,136,.1)}
.contact-card a{color:var(--accent);font-weight:700;transition:color .2s}
.contact-card a:hover{color:var(--accent-2);text-decoration:underline}

footer{text-align:center;padding:24px 12px;font-size:.9rem;color:var(--text-muted);border-top:1px solid rgba(13,148,136,.1);margin-top:var(--spacing-lg);background:linear-gradient(180deg,transparent,rgba(13,148,136,.02))}

/* =========================
   WhatsApp - Option B (Rounded Pill)
   =========================
   Replaces previous whatsapp styles with a polished rounded pill:
   - Icon at left and label visible
   - Accessible, responsive (label hidden on tiny screens)
   - Retains pulse animation
*/
.whatsapp-btn{
  position:fixed;
  right:18px;
  bottom:20px;
  z-index:9999;

  display:inline-flex;
  align-items:center;
  gap:10px;

  padding:10px 14px;            /* pill padding */
  min-width:56px;
  height:auto;
  border-radius:999px;         /* pill */
  background: linear-gradient(135deg,#25D366,#128C7E);
  color:#fff;
  box-shadow:0 10px 30px rgba(18,140,126,.18);
  font-weight:700;
  font-size:.95rem;
  transition: transform .14s, box-shadow .14s, opacity .12s;
  will-change: transform;
  text-decoration:none;        /* in case it's an <a> */
  align-self:end;
  padding-inline:14px 18px;
}

/* hover and focus */
.whatsapp-btn:hover,
.whatsapp-btn:focus {
  transform: translateY(-4px);
  box-shadow:0 18px 36px rgba(18,140,126,.22);
  outline: none;
}

/* icon container — supports inline SVG or <img> */
.whatsapp-icon{
  width:20px;
  height:20px;
  flex:none;
  display:inline-block;
  line-height:0;
  vertical-align:middle;
}

/* ensure inline SVG fills white */
.whatsapp-btn svg { display:block; width:20px; height:20px; fill:currentColor; stroke:none; }

/* label visible on larger screens */
.whatsapp-btn .wa-label{ display:inline-block; white-space:nowrap; }

/* pulse animation kept */
.whatsapp-btn.pulse{animation:wa-pulse 3s ease-in-out infinite}
@keyframes wa-pulse{0%{box-shadow:0 6px 18px rgba(37,211,102,.12);transform:translateY(0)}50%{box-shadow:0 18px 40px rgba(37,211,102,.18);transform:translateY(-2px)}100%{box-shadow:0 6px 18px rgba(37,211,102,.12);transform:translateY(0)}
}

/* hide label on very small screens for compactness */
@media (max-width:420px){
  .whatsapp-btn{padding:10px;gap:8px;font-size:.92rem;right:14px;bottom:14px}
  .whatsapp-btn .wa-label{display:none}
  .whatsapp-btn svg, .whatsapp-icon{width:18px;height:18px}
}

/* responsive tweaks */
@media (max-width:768px){
    .top-nav ul{display:none}.menu-btn{display:block}.hero-title{font-size:1.8rem}.hero{padding:40px 20px}.section{padding:24px}.section-title{font-size:1.5rem}.site-title .title{font-size:1rem}
    .services-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
    .projects-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
}
@media (max-width:420px){.whatsapp-btn{padding:10px;gap:8px;font-size:.92rem}.whatsapp-btn .wa-label{display:none}}

/* prefers reduced motion */
@media (prefers-reduced-motion: reduce){
    .home-logo,.hero-title,.hero-sub,.hero-tags span,.btn-main{animation:none;transition:none}
}



/* Contact button pushed down (inside a contact card) */
.contact-card {display:flex;flex-direction:column;gap:14px;}
.contact-card .btn-main, .contact-card .call-btn {margin-top:auto;}

/* small utilities */
.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* =========================
   MOBILE FIX: Disable Desktop Sidebar
   ========================= */
@media (max-width: 1023px) {
  .desktop-sidebar {
    display: none !important;
  }

  .collapse-handle {
    display: none !important;
  }

  header .nav {
    margin-left: 0 !important;
    max-width: 100% !important;
  }

  .page {
    margin-left: 0 !important;
    max-width: 100% !important;
  }
}