/* ============================================================
   BD Analytics — Shared Stylesheet
   ============================================================ */

/* THEMES */
:root {
  --bg: #F7F6F2;
  --bg2: #EDECEA;
  --bg3: #E4E3DE;
  --card: #FFFFFF;
  --txt: #1A1A2E;
  --txt2: #4A4A6A;
  --muted: #888899;
  --accent: #1B4FD8;
  --accent2: #EEF2FF;
  --accent3: #1440BB;
  --border: #DDDDE8;
  --border2: #B0B0C8;
  --sh1: 0 1px 3px rgba(27,79,216,.06),0 1px 2px rgba(0,0,0,.04);
  --sh2: 0 4px 20px rgba(27,79,216,.08),0 2px 8px rgba(0,0,0,.05);
  --sh3: 0 12px 40px rgba(27,79,216,.12),0 4px 16px rgba(0,0,0,.06);
  --nav: rgba(247,246,242,.93);
  --grid: rgba(27,79,216,.055);
  --tag: #EEF2FF;
  --tagc: #1B4FD8;
  --foot: #1A1A2E;
  --footc: #6A6A88;
  --tog: #DDDDE8;
  --green: #059669;
  --green2: #D1FAE5;
}
[data-theme="dark"] {
  --bg: #0E0F1A;
  --bg2: #141528;
  --bg3: #1D1E35;
  --card: #1A1B2E;
  --txt: #E8E8F0;
  --txt2: #9898B8;
  --muted: #5A5A78;
  --accent: #4D7EFF;
  --accent2: rgba(77,126,255,.12);
  --accent3: #6A95FF;
  --border: #252540;
  --border2: #353560;
  --sh1: 0 1px 3px rgba(0,0,0,.3);
  --sh2: 0 4px 20px rgba(0,0,0,.4);
  --sh3: 0 12px 40px rgba(0,0,0,.5);
  --nav: rgba(14,15,26,.93);
  --grid: rgba(77,126,255,.04);
  --tag: rgba(77,126,255,.15);
  --tagc: #7FA8FF;
  --foot: #080910;
  --footc: #4A4A68;
  --tog: #252540;
  --green: #10B981;
  --green2: rgba(16,185,129,.15);
}

/* RESET */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Manrope',sans-serif;
  background:var(--bg);
  color:var(--txt);
  line-height:1.6;
  overflow-x:hidden;
  transition:background .3s,color .3s;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
ul{list-style:none}
button{font-family:'Manrope',sans-serif}

/* GRID BG */
body::before{
  content:'';position:fixed;inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;z-index:0;
}

/* ---- NAV ---- */
nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:var(--nav);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  transition:background .3s,border-color .3s;
}
.nav-inner{
  max-width:1280px;margin:0 auto;padding:0 2rem;
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo-icon{
  width:34px;height:34px;background:var(--accent);border-radius:8px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-logo-text{font-weight:800;font-size:1.05rem;letter-spacing:-.02em;color:var(--txt)}
.nav-logo-text span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:.15rem}
.nav-links a,.nav-links button.nav-drop-btn{
  font-size:.875rem;font-weight:500;color:var(--txt2);
  padding:.4rem .85rem;border-radius:6px;
  transition:color .2s,background .2s;background:none;border:none;cursor:pointer;
  display:flex;align-items:center;gap:4px;
}
.nav-links a:hover,.nav-links button.nav-drop-btn:hover{color:var(--txt);background:var(--border)}
.nav-cta{background:var(--accent)!important;color:#fff!important;border-radius:8px!important;font-weight:600!important}
.nav-cta:hover{background:var(--accent3)!important;transform:translateY(-1px)}
.nav-controls{display:flex;align-items:center;gap:.75rem}
/* Dropdown */
.nav-dropdown{position:relative}
.nav-drop-menu{
  display:none;position:absolute;top:calc(100% + 8px);left:0;
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:.6rem;min-width:260px;box-shadow:var(--sh3);z-index:200;
}
.nav-dropdown:hover .nav-drop-menu,.nav-dropdown:focus-within .nav-drop-menu{display:block}
.nav-drop-menu a{
  display:flex;align-items:center;gap:10px;
  font-size:.82rem;font-weight:500;color:var(--txt2);
  padding:.55rem .75rem;border-radius:8px;
  transition:background .2s,color .2s;
}
.nav-drop-menu a:hover{background:var(--accent2);color:var(--accent)}
.nav-drop-menu a .icon{font-size:1rem;width:24px;text-align:center}
/* Theme toggle */
.theme-toggle{
  width:44px;height:24px;background:var(--tog);border-radius:12px;
  border:none;cursor:pointer;position:relative;transition:background .3s;
}
.theme-toggle::after{
  content:'';position:absolute;top:3px;left:3px;
  width:18px;height:18px;background:var(--accent);border-radius:50%;
  transition:transform .3s;
}
[data-theme="dark"] .theme-toggle::after{transform:translateX(20px)}
/* Burger */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.burger span{display:block;width:22px;height:2px;background:var(--txt);border-radius:2px;transition:all .3s}
/* Mobile menu */
.mobile-menu{
  display:none;position:fixed;inset:0;background:var(--bg);z-index:999;
  padding:80px 1.5rem 2rem;flex-direction:column;gap:.5rem;
}
.mobile-menu.open{display:flex}
.mobile-menu a{
  font-size:1rem;font-weight:600;color:var(--txt);
  padding:.8rem 1rem;border-radius:10px;border:1px solid var(--border);
}
.mobile-menu a:hover{background:var(--bg2)}
.mobile-menu .mob-cta{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---- LAYOUT ---- */
.page-main{padding-top:64px;position:relative;z-index:1}
.section-wrap{max-width:1280px;margin:0 auto;padding:0 2rem}
.section-pad{padding:100px 0}
.section-pad-sm{padding:60px 0}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.73rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);
  margin-bottom:.7rem;
}
.section-label::before{content:'';width:20px;height:2px;background:var(--accent)}
.section-title{
  font-family:'Playfair Display',serif;
  font-size:clamp(1.8rem,3vw,2.6rem);font-weight:700;line-height:1.2;
  letter-spacing:-.02em;color:var(--txt);margin-bottom:1rem;
}
.section-desc{font-size:1rem;color:var(--txt2);line-height:1.7;max-width:600px}

/* ---- BUTTONS ---- */
.btn{
  display:inline-flex;align-items:center;gap:8px;font-size:.9rem;
  font-weight:600;padding:.8rem 1.7rem;border-radius:10px;border:none;
  cursor:pointer;transition:all .2s;font-family:'Manrope',sans-serif;
}
.btn-p{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(27,79,216,.25)}
.btn-p:hover{background:var(--accent3);transform:translateY(-2px);box-shadow:0 6px 20px rgba(27,79,216,.3)}
.btn-s{background:transparent;color:var(--txt);border:1px solid var(--border2)}
.btn-s:hover{border-color:var(--accent);background:var(--accent2);transform:translateY(-2px)}
.btn-w{background:#fff;color:var(--accent);box-shadow:var(--sh2)}
.btn-w:hover{transform:translateY(-2px);box-shadow:var(--sh3)}

/* ---- CARDS ---- */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;
  padding:1.75rem 1.5rem;transition:border-color .2s,box-shadow .25s,transform .25s;
}
.card:hover{border-color:var(--border2);box-shadow:var(--sh2);transform:translateY(-3px)}
.card-icon{
  width:44px;height:44px;background:var(--accent2);border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-bottom:1rem;
}
.card-title{font-size:.95rem;font-weight:700;color:var(--txt);margin-bottom:.45rem;line-height:1.3}
.card-desc{font-size:.8rem;color:var(--txt2);line-height:1.6}
.tag{
  display:inline-block;margin-top:.9rem;font-size:.67rem;font-weight:700;
  color:var(--tagc);background:var(--tag);padding:3px 10px;border-radius:10px;
  text-transform:uppercase;letter-spacing:.04em;
}

/* ---- BADGE / CHECK ---- */
.check-list{display:flex;flex-direction:column;gap:.55rem}
.check-item{display:flex;align-items:flex-start;gap:.65rem;font-size:.88rem;color:var(--txt2)}
.check-item::before{
  content:'✓';font-size:.8rem;font-weight:800;color:var(--green);
  width:20px;height:20px;background:var(--green2);border-radius:50%;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;
}

/* ---- PAGE HERO ---- */
.page-hero{
  background:var(--bg2);border-bottom:1px solid var(--border);
  padding:72px 0 60px;position:relative;overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;right:-60px;top:-60px;
  width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,var(--accent2) 0%,transparent 70%);
  pointer-events:none;
}
.page-hero-inner{max-width:1280px;margin:0 auto;padding:0 2rem}
.breadcrumb{
  display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--muted);
  margin-bottom:1.25rem;
}
.breadcrumb a{color:var(--accent);font-weight:600}
.breadcrumb span::before{content:'›';margin-right:6px}
.page-hero h1{
  font-family:'Playfair Display',serif;
  font-size:clamp(2rem,4vw,3.2rem);font-weight:700;line-height:1.15;
  letter-spacing:-.02em;margin-bottom:1rem;max-width:700px;
}
.page-hero p{font-size:1.05rem;color:var(--txt2);max-width:580px;line-height:1.7}

/* ---- FOOTER ---- */
footer{background:var(--foot);border-top:1px solid var(--border);padding:60px 0 0;position:relative;z-index:1}
.foot-inner{max-width:1280px;margin:0 auto;padding:0 2rem}
.foot-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;
  padding-bottom:3rem;border-bottom:1px solid rgba(255,255,255,.06);
}
.foot-brand-desc{font-size:.8rem;color:var(--footc);line-height:1.7;margin:.9rem 0;max-width:270px}
.foot-col-title{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.6);margin-bottom:1rem}
.foot-links{display:flex;flex-direction:column;gap:.55rem}
.foot-links a{font-size:.8rem;color:var(--footc);transition:color .2s}
.foot-links a:hover{color:#fff}
.foot-bottom{padding:1.25rem 0;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.foot-copy{font-size:.75rem;color:var(--footc)}
.foot-accent{font-size:.73rem;color:#4D7EFF;font-weight:700}
.foot-logo-txt{font-weight:800;font-size:1rem;letter-spacing:-.02em;color:#fff}
.foot-logo-txt span{color:var(--accent)}

/* ---- ANIMATIONS ---- */
.fade-up{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}
@keyframes barGrow{from{transform:scaleY(0)}to{transform:scaleY(1)}}

/* ---- FORM ---- */
.form-group{margin-bottom:1rem}
.form-group label{
  display:block;font-size:.75rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;color:var(--txt2);margin-bottom:5px;
}
.form-group input,.form-group textarea,.form-group select{
  width:100%;background:var(--bg2);border:1px solid var(--border);border-radius:8px;
  padding:.7rem 1rem;font-size:.88rem;font-family:'Manrope',sans-serif;
  color:var(--txt);transition:border-color .2s,box-shadow .2s;outline:none;
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  border-color:var(--accent);box-shadow:0 0 0 3px var(--accent2);
}
.form-group textarea{resize:vertical;min-height:110px}
option{background:var(--card)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg2)}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* ---- RESPONSIVE ---- */
@media(max-width:1024px){
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .nav-links{display:none}
  .burger{display:flex}
  .form-row{grid-template-columns:1fr}
}
@media(max-width:600px){
  .foot-grid{grid-template-columns:1fr}
  .section-pad{padding:70px 0}
}