/*
Theme Name: The Changer - E19 Earbuds
Theme URI: https://thechanger.pk
Author: The Changer
Author URI: https://thechanger.pk
Description: Single-product landing theme for E19 TWS Earbuds. Full funnel: landing, add to cart, buy now, checkout, order confirmation.
Version: 1.0
Text Domain: thechanger
*/

/* ============ TOKENS ============ */
:root{
  --bg: #0B0B0D;
  --surface: #17171A;
  --surface-2: #1F1F23;
  --line: #2A2A2E;
  --red: #E5233F;
  --red-deep: #9A0F27;
  --red-soft: rgba(229,35,63,0.14);
  --cream: #F4F0E8;
  --muted: #9A9AA2;
  --radius: 14px;
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--cream);
  font-family:var(--font-body);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
.container{max-width:1160px;margin:0 auto;padding:0 24px;}
.eyebrow{
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:12px;
  color:var(--red);
  font-weight:600;
}
h1,h2,h3{font-family:var(--font-display);margin:0;line-height:1.08;}
.muted{color:var(--muted);}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
}

/* ============ TOPBAR ============ */
.topbar{
  background:var(--red);
  color:#fff;
  font-size:13px;
  text-align:center;
  padding:8px 12px;
  font-weight:600;
  letter-spacing:.02em;
}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,11,13,0.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;padding-bottom:16px;
}
.logo{font-family:var(--font-display);font-weight:700;font-size:20px;letter-spacing:-.01em;}
.logo span{color:var(--red);}
.header-actions{display:flex;align-items:center;gap:18px;}
.header-call{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-weight:600;font-size:14px;padding:12px 22px;
  transition:transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn:active{transform:scale(.97);}
.btn-primary{background:var(--red);color:#fff;}
.btn-primary:hover{background:#c91d38;}
.btn-outline{border-color:var(--line);color:var(--cream);background:transparent;}
.btn-outline:hover{border-color:var(--red);}
.btn-block{width:100%;}
.btn-lg{padding:16px 28px;font-size:16px;}

/* ============ HERO ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 40px;}
.hero .container{
  display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;
}
.hero-copy h1{font-size:clamp(34px,5vw,56px);margin:14px 0 18px;}
.hero-copy p.lead{font-size:17px;color:var(--muted);max-width:460px;margin-bottom:28px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px;}
.hero-price-row{display:flex;align-items:baseline;gap:10px;margin-bottom:20px;}
.price-now{font-family:var(--font-display);font-size:32px;font-weight:700;color:var(--red);}
.price-old{font-size:16px;color:var(--muted);text-decoration:line-through;}
.trust-row{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted);}
.trust-row span{display:flex;align-items:center;gap:6px;}
.trust-dot{width:6px;height:6px;border-radius:50%;background:var(--red);display:inline-block;}

.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:380px;}
.pulse-ring{
  position:absolute;border:1.5px solid var(--red);border-radius:50%;opacity:0;
  width:220px;height:220px;
  animation:pulse 3.2s ease-out infinite;
}
.pulse-ring.r2{animation-delay:1.05s;}
.pulse-ring.r3{animation-delay:2.1s;}
@keyframes pulse{
  0%{transform:scale(.6);opacity:.55;}
  100%{transform:scale(1.9);opacity:0;}
}
.hero-product-wrap{position:relative;z-index:2;width:300px;animation:float 5s ease-in-out infinite;}
@keyframes float{
  0%,100%{transform:translateY(0px);}
  50%{transform:translateY(-14px);}
}
.hero-product-wrap img{border-radius:18px;}

/* ============ SPEC STRIP ============ */
.spec-strip{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--surface);
}
.spec-strip .container{
  display:grid;grid-template-columns:repeat(4,1fr);
  padding:22px 24px;gap:12px;
}
.spec-item{text-align:center;border-right:1px solid var(--line);}
.spec-item:last-child{border-right:none;}
.spec-value{font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--red);}
.spec-label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:2px;}

/* ============ COLOR SELECT SECTION ============ */
.section{padding:80px 0;}
.section-head{max-width:560px;margin-bottom:44px;}
.section-head h2{font-size:clamp(26px,3.6vw,38px);margin-top:10px;}
.section-head p{color:var(--muted);margin-top:12px;}

.color-picker-block{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.color-stage{
  border-radius:var(--radius);overflow:hidden;
  display:flex;align-items:center;justify-content:center;min-height:340px;
  box-shadow:0 0 0 1px var(--line);
}
.color-stage img{width:100%;height:100%;object-fit:cover;transition:opacity .25s ease;}
.color-options{display:flex;gap:14px;margin:18px 0 26px;}
.color-swatch{
  width:52px;height:52px;border-radius:50%;border:2px solid var(--line);
  cursor:pointer;position:relative;transition:border-color .2s ease, transform .2s ease;
}
.color-swatch.active{border-color:var(--red);transform:scale(1.08);}
.color-swatch[data-color="white"]{background:#EDE9E1;}
.color-swatch[data-color="black"]{background:#111113;}
.color-swatch .tick{
  position:absolute;inset:0;display:none;align-items:center;justify-content:center;color:var(--red);font-weight:700;
}
.color-swatch.active .tick{display:flex;}
.qty-row{display:flex;align-items:center;gap:16px;margin-bottom:24px;}
.qty-control{display:flex;align-items:center;border:1px solid var(--line);border-radius:999px;overflow:hidden;}
.qty-control button{background:var(--surface-2);color:var(--cream);border:none;width:38px;height:38px;font-size:18px;}
.qty-control span{width:40px;text-align:center;font-weight:600;}
.buy-actions{display:flex;gap:14px;flex-wrap:wrap;}
.stock-note{font-size:13px;color:var(--muted);margin-top:14px;}

/* ============ FEATURES ============ */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;
}
.feature-num{font-family:var(--font-display);color:var(--red);font-weight:700;font-size:13px;letter-spacing:.08em;}
.feature-card h3{font-size:17px;margin:12px 0 8px;}
.feature-card p{font-size:14px;color:var(--muted);margin:0;}

/* ============ CONTROLS GUIDE ============ */
.controls-table{
  width:100%;border-collapse:collapse;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.controls-table th,.controls-table td{
  text-align:left;padding:14px 18px;font-size:14px;border-bottom:1px solid var(--line);
}
.controls-table th{color:var(--red);font-family:var(--font-display);text-transform:uppercase;font-size:12px;letter-spacing:.06em;}
.controls-table tr:last-child td{border-bottom:none;}

/* ============ CHECKOUT ============ */
.checkout-section{background:var(--surface);}
.checkout-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.order-summary{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  height:fit-content;position:sticky;top:100px;
}
.order-summary h3{font-size:18px;margin-bottom:18px;}
.summary-row{display:flex;justify-content:space-between;font-size:14px;padding:8px 0;border-bottom:1px solid var(--line);}
.summary-row.total{font-weight:700;font-size:16px;color:var(--red);border-bottom:none;padding-top:14px;}

.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;}
.form-group input,.form-group select,.form-group textarea{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:8px;
  padding:12px 14px;color:var(--cream);font-family:inherit;font-size:14px;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--red);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.payment-options{display:flex;gap:12px;margin-bottom:16px;}
.payment-option{
  flex:1;border:1px solid var(--line);border-radius:10px;padding:14px;cursor:pointer;text-align:center;
  font-size:14px;font-weight:600;transition:border-color .2s ease, background .2s ease;
}
.payment-option.active{border-color:var(--red);background:var(--red-soft);color:var(--red);}
.bank-details{
  display:none;background:var(--bg);border:1px dashed var(--red);border-radius:10px;
  padding:16px;font-size:13px;margin-bottom:16px;line-height:1.7;
}
.bank-details.show{display:block;}
.bank-details strong{color:var(--red);}
.form-msg{font-size:13px;margin-top:10px;display:none;}
.form-msg.error{color:var(--red);display:block;}
.form-msg.success{color:#5fd18a;display:block;}

/* ============ SUCCESS ============ */
.success-box{
  display:none;text-align:center;padding:50px 24px;background:var(--bg);
  border:1px solid var(--line);border-radius:var(--radius);
}
.success-box.show{display:block;}
.success-icon{
  width:64px;height:64px;border-radius:50%;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:30px;margin:0 auto 18px;
}
.success-box h3{font-size:22px;margin-bottom:8px;}
.order-number{color:var(--red);font-weight:700;}

/* ============ FOOTER ============ */
.site-footer{border-top:1px solid var(--line);padding:40px 0;}
.footer-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;align-items:center;}
.footer-row .muted{font-size:13px;}

/* ============ RESPONSIVE ============ */
@media (max-width: 880px){
  .hero .container{grid-template-columns:1fr;}
  .hero-visual{order:-1;min-height:280px;}
  .spec-strip .container{grid-template-columns:repeat(2,1fr);}
  .spec-item:nth-child(2){border-right:none;}
  .color-picker-block{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr 1fr;}
  .checkout-wrap{grid-template-columns:1fr;}
  .order-summary{position:static;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width: 520px){
  .feature-grid{grid-template-columns:1fr;}
  .header-call{display:none;}
}