/* ============================================================
   Bulkagrochem Case Study
   ============================================================ */
:root{
  --bg:#FAF4EC;
  --bg2:#F7F3EB;
  --bg3:#F4EDE4;
  --black:#111111;
  --dark:#121212;
  --white:#FFFFFF;
  --gray-500:#888888;
  --gray-600:#444444;
  --gray-700:#333333;
  --accent-coral:#FF4B1F;
  --accent-green:#053B15;
  --accent-blue:#2563EB;
  --accent-lime:#22C55E;
  --tag-blue:#EFF6FF;
  --tag-cream:#F4EDE4;
  --tag-green:#F0FDF4;
}

.bac-page{background:var(--bg);color:var(--black);font-family:'Inter',system-ui,-apple-system,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}

.bac-container{max-width:1200px;margin:0 auto;padding:0 40px}

/* ── SECTION LABEL ── */
.section-label{font-size:13px;font-weight:700;color:var(--dark);margin-bottom:20px;display:flex;align-items:center;gap:10px;text-transform:uppercase;letter-spacing:1.5px}
.section-label::before{content:'';width:24px;height:2px;background:var(--accent-coral);display:inline-block}
.section-label-center{justify-content:center}

/* ── HERO ── */
.bac-hero{padding:100px 0 80px;background:var(--bg2)}
.bac-hero .bac-container{display:flex;align-items:center;gap:60px}
.hero-left{flex:1;max-width:520px}
.hero-right{flex:0 0 380px;display:flex;justify-content:center}
.hero-eyebrow{font-size:12px;font-weight:700;color:var(--accent-coral);text-transform:uppercase;letter-spacing:2px;margin-bottom:20px}
.hero-left h1{font-size:48px;font-weight:800;letter-spacing:-1.5px;line-height:1.08;color:var(--dark);margin-bottom:16px}
.hero-subtitle{font-size:16px;color:var(--gray-600);line-height:1.75;margin-bottom:28px;max-width:440px}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap}
.htag{display:inline-block;padding:8px 16px;border-radius:8px;font-size:13px;font-weight:600}
.htag-dark{background:var(--black);color:var(--white)}
.htag-blue{background:var(--tag-blue);color:var(--accent-blue)}
.htag-cream{background:var(--tag-cream);color:var(--dark)}
.htag-green{background:var(--tag-green);color:#15803D}

/* Stacked Card */
.card-stack{position:relative;width:360px;height:480px}
.card-stack .card-back-2{position:absolute;width:84%;height:100%;background:#BFBFBF;border-radius:28px;z-index:1;left:8%;top:22px;opacity:.25}
.card-stack .card-back-1{position:absolute;width:92%;height:100%;background:#666;border-radius:28px;z-index:2;left:4%;top:11px;opacity:.4}
.card-stack .card-main{position:absolute;width:100%;height:100%;background:var(--dark);border-radius:28px;z-index:3;box-shadow:0 20px 50px rgba(0,0,0,.12);display:flex;flex-direction:column;justify-content:flex-end;padding:28px;overflow:hidden}
.card-main .card-label{font-size:11px;font-weight:700;color:rgba(255,255,255,.3);text-transform:uppercase;letter-spacing:2px;margin-bottom:20px}
.card-main .stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
.card-main .stat-item{text-align:center}
.card-main .stat-num{font-size:26px;font-weight:800;color:var(--white);line-height:1}
.card-main .stat-label{font-size:10px;color:rgba(255,255,255,.4);text-transform:uppercase;letter-spacing:.5px;margin-top:4px}
.card-main .chart-area{height:70px;display:flex;align-items:flex-end;gap:3px;padding:0 4px}
.chart-bar{flex:1;border-radius:3px 3px 0 0;transition:height .9s cubic-bezier(.22,1,.36,1)}

/* ── ASSIGNMENT ── */
.bac-assignment{padding:100px 0;background:var(--bg2)}
.bac-assignment h2{font-size:36px;font-weight:700;line-height:1.3;color:var(--dark);max-width:820px;margin-bottom:48px;letter-spacing:-.5px}

/* Phase scroll cards */
.video-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:20px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.video-scroll::-webkit-scrollbar{display:none}
.video-card{flex:0 0 300px;height:520px;background:var(--black);border-radius:28px;overflow:hidden;scroll-snap-align:start;position:relative;display:flex;align-items:center;justify-content:center;padding:32px}
.video-card .phase-number{font-size:72px;font-weight:900;color:rgba(255,255,255,.06);position:absolute;top:20px;right:24px;line-height:1}
.video-card .phase-content{position:relative;z-index:2;width:100%}
.video-card .phase-tag{display:inline-block;padding:5px 12px;border-radius:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin-bottom:20px}
.video-card .phase-title{font-size:22px;font-weight:800;color:var(--white);line-height:1.3;margin-bottom:12px}
.video-card .phase-desc{font-size:13px;color:rgba(255,255,255,.5);line-height:1.7}
.video-card .phase-stat{margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08)}
.video-card .phase-stat-num{font-size:36px;font-weight:800;color:var(--white)}
.video-card .phase-stat-label{font-size:11px;color:rgba(255,255,255,.4);margin-top:2px}

/* ── APPROACH ── */
.bac-approach{padding:100px 0;background:var(--bg3)}
.bac-approach .bac-container{display:flex;align-items:flex-start;gap:80px}
.approach-left{flex:0 0 400px}
.approach-right{flex:1}
.approach-left h2{font-size:36px;font-weight:700;line-height:1.25;color:var(--dark);margin-bottom:24px;letter-spacing:-.5px}
.approach-left p{font-size:15px;color:var(--gray-600);line-height:1.8;margin-bottom:16px}
.pillar-list{margin-top:28px;display:flex;flex-direction:column;gap:6px}
.pillar-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--gray-600);line-height:1.6;padding:8px 0;border-bottom:1px solid rgba(0,0,0,.05)}
.pillar-bullet{width:6px;height:6px;border-radius:50%;background:var(--accent-coral);flex-shrink:0;margin-top:8px}
.strategy-cards{display:flex;flex-direction:column;gap:16px}
.strategy-card{background:var(--white);border-radius:16px;padding:24px;border:1px solid rgba(0,0,0,.06)}
.strategy-card .sc-num{font-size:11px;font-weight:700;color:var(--accent-coral);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.strategy-card h4{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:6px}
.strategy-card p{font-size:13px;color:var(--gray-500);line-height:1.7}

/* ── RESULTS ── */
.bac-results{padding:100px 0;background:var(--bg2)}
.results-header{margin-bottom:48px}
.bac-results h2{font-size:40px;font-weight:700;color:var(--dark);margin-bottom:8px;letter-spacing:-.5px}
.results-sub{font-size:14px;color:var(--gray-500)}
.result-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px;align-items:stretch}
.result-card{border-radius:24px;overflow:hidden;position:relative;display:flex;flex-direction:column;justify-content:flex-end;padding:32px}
.rc-white{background:var(--white);border:1px solid rgba(0,0,0,.06)}
.rc-dark{background:var(--dark);padding-top:76px}
.rc-blue{background:linear-gradient(135deg,#1D4ED8 0%,#2563EB 100%)}
.rc-coral{background:linear-gradient(135deg,#FF4B1F 0%,#FF7849 100%)}
.rc-green{background:var(--accent-green)}
.rc-lime{background:linear-gradient(135deg,#16A34A 0%,#22C55E 100%)}
.big-num{font-size:64px;font-weight:900;line-height:1;letter-spacing:-2px;margin-bottom:8px}
.big-label{font-size:16px;font-weight:700;margin-bottom:4px}
.big-sub{font-size:13px;opacity:.6;line-height:1.5}
.rc-white .big-num,.rc-white .big-label{color:var(--dark)}
.rc-white .big-sub{color:var(--gray-500);opacity:1}
.rc-dark .big-num,.rc-dark .big-label{color:var(--white)}
.rc-dark .big-sub{color:rgba(255,255,255,.5);opacity:1}
.rc-blue .big-num,.rc-blue .big-label,.rc-blue .big-sub{color:var(--white)}
.rc-coral .big-num,.rc-coral .big-label,.rc-coral .big-sub{color:var(--white)}
.rc-green .big-num,.rc-green .big-label,.rc-green .big-sub{color:var(--white)}
.rc-lime .big-num,.rc-lime .big-label,.rc-lime .big-sub{color:var(--white)}
.card-brand{position:absolute;top:28px;left:32px;display:flex;align-items:center;gap:10px}
.card-dot{width:28px;height:28px;border-radius:8px;background:var(--accent-coral);display:flex;align-items:center;justify-content:center;font-size:14px}
.card-brand-text{font-size:13px;font-weight:600;color:rgba(255,255,255,.5)}
.card-cta{display:block;margin-top:20px;padding:14px 20px;background:var(--accent-coral);color:var(--white);border-radius:8px;font-size:13px;font-weight:700;text-decoration:none;text-transform:uppercase;letter-spacing:.5px;text-align:center}
.geo-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.geo-item{background:rgba(255,255,255,.08);border-radius:8px;padding:10px 14px}
.geo-city{font-size:13px;font-weight:600;color:rgba(255,255,255,.9)}
.geo-num{font-size:12px;color:rgba(255,255,255,.4)}

/* ── REVENUE TABLE ── */
.bac-revenue{padding:80px 0;background:var(--bg3)}
.bac-revenue h2{font-size:36px;font-weight:700;color:var(--dark);letter-spacing:-.5px;margin-bottom:8px}
.revenue-table{width:100%;border-collapse:collapse;margin-top:32px}
.revenue-table th{background:var(--dark);color:var(--white);padding:16px 20px;text-align:left;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.revenue-table th:last-child{text-align:right}
.revenue-table td{padding:16px 20px;font-size:14px;border-bottom:1px solid rgba(0,0,0,.06)}
.revenue-table td:last-child{text-align:right;font-weight:700}
.revenue-table tr:nth-child(even) td{background:rgba(0,0,0,.02)}
.revenue-table tr.rev-highlight td{background:#F0FDF4;font-weight:700;color:#15803D}
.revenue-table tr.rev-total td{background:var(--tag-blue);font-weight:800;color:var(--accent-blue);font-size:15px}
.revenue-badge{display:inline-block;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:700}

/* ── BTS ── */
.bac-bts{padding:100px 0;background:var(--bg2)}
.bac-bts h2{font-size:38px;font-weight:700;color:var(--dark);margin-bottom:8px;letter-spacing:-.5px}
.bts-sub{font-size:14px;color:var(--gray-500);margin-bottom:40px}
.bts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:start}
.bts-card{background:var(--bg3);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:0}
.bts-icon{font-size:28px;margin-bottom:12px}
.bts-title{font-size:14px;font-weight:700;color:var(--dark);margin-bottom:4px}
.bts-detail{font-size:13px;color:var(--gray-500)}
.bts-num{font-size:28px;font-weight:800;color:var(--accent-blue);margin-top:16px}

/* ── AUDIENCE ── */
.bac-audience{padding:80px 0;background:var(--bg3)}
.bac-audience h2{font-size:36px;font-weight:700;color:var(--dark);letter-spacing:-.5px;margin-bottom:8px}
.audience-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}
.audience-card{background:var(--white);border-radius:16px;padding:20px;border:1px solid rgba(0,0,0,.06)}
.aud-label{font-size:11px;font-weight:700;color:var(--gray-500);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.aud-val{font-size:22px;font-weight:800;color:var(--dark)}
.aud-sub{font-size:12px;color:var(--gray-500);margin-top:4px}

/* ── TESTIMONIAL ── */
.bac-testimonial{padding:80px 0;background:var(--dark)}
.bac-testimonial .bac-container{max-width:800px;text-align:center}
.quote-mark{font-size:80px;color:var(--accent-coral);line-height:.8;margin-bottom:16px;font-family:Georgia,serif}
.quote-text{font-size:26px;font-weight:700;color:var(--white);line-height:1.5;margin-bottom:28px;letter-spacing:-.3px}
.quote-divider{width:40px;height:2px;background:var(--accent-coral);margin:0 auto 20px}
.quote-author{font-size:15px;font-weight:700;color:var(--white);margin-bottom:4px}
.quote-role{font-size:13px;color:rgba(255,255,255,.4)}

/* ── CTA ── */
.bac-cta{padding:100px 0;background:var(--bg2);text-align:center}
.bac-cta h2{font-size:40px;font-weight:800;color:var(--dark);margin-bottom:16px;letter-spacing:-.5px}
.bac-cta p{font-size:16px;color:var(--gray-600);max-width:480px;margin:0 auto 40px}
.cta-buttons{display:flex;gap:16px;justify-content:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:16px 32px;border-radius:12px;font-family:'Inter',sans-serif;font-size:15px;font-weight:700;text-decoration:none;transition:all .25s ease}
.btn-dark{background:var(--dark);color:var(--white)}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2);color:var(--white)}
.btn-outline{background:transparent;color:var(--dark);border:2px solid rgba(0,0,0,.15)}
.btn-outline:hover{border-color:var(--dark);color:var(--dark)}

/* ── ANIMATIONS ── */
.fade-up{opacity:0;transform:translateY(28px);transition:all .7s cubic-bezier(.22,1,.36,1)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.d1{transition-delay:.1s}
.d2{transition-delay:.2s}
.d3{transition-delay:.3s}
.d4{transition-delay:.4s}

/* ── RESPONSIVE ── */
@media(max-width:992px){
  .bac-hero .bac-container,.bac-approach .bac-container{flex-direction:column}
  .hero-right,.approach-left{flex:none;width:100%}
  .card-stack{width:300px;height:400px}
  .result-row{grid-template-columns:1fr}
  .audience-grid{grid-template-columns:1fr 1fr}
  .bts-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .hero-left h1{font-size:32px}
  .bac-container{padding:0 20px}
  .video-card{flex:0 0 260px;height:460px}
  .big-num{font-size:44px}
  .cta-buttons{flex-direction:column;align-items:center}
  .audience-grid{grid-template-columns:1fr}
  .bts-grid{grid-template-columns:1fr}
}