/* ============================================
   Page Loader
   ============================================ */

.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s var(--ease), visibility 0.5s;
}
.page-loader.hide { opacity: 0; visibility: hidden; }

.loader-mark {
  width: 56px; height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  animation: loaderPulse 1.1s ease-in-out infinite;
}
.loader-mark svg { width: 28px; height: 28px; }
@keyframes loaderPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.88); opacity: 0.75; }
}

/* ============================================
   Checkout Modal — simulated Razorpay flow
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17,24,39,0.55);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }

.checkout-modal {
  background: var(--card);
  border-radius: 22px;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.92) translateY(16px);
  transition: transform 0.4s var(--ease);
}
.modal-overlay.open .checkout-modal { transform: scale(1) translateY(0); }

.checkout-header {
  background: linear-gradient(135deg, #0B2F8A, #1647C2);
  color: white;
  padding: 24px 26px;
  border-radius: 22px 22px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.checkout-header-info { display: flex; align-items: center; gap: 12px; }
.checkout-merchant-logo {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: white;
  display: flex; align-items: center; justify-content: center;
}
.checkout-merchant-logo svg { width: 20px; height: 20px; color: var(--primary); }
.checkout-header h4 { color: white; font-size: 15.5px; margin-bottom: 2px; }
.checkout-header span { font-size: 12px; opacity: 0.8; }
.checkout-close { color: white; opacity: 0.8; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: 50%; transition: background var(--dur-fast); }
.checkout-close:hover { background: rgba(255,255,255,0.15); opacity: 1; }
.checkout-close svg { width: 18px; height: 18px; }

.checkout-amount-row {
  padding: 22px 26px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.checkout-amount-row .label { font-size: 13px; color: var(--text); }
.checkout-amount-row .amount { font-family: var(--font-display); font-size: 24px; font-weight: 700; color: var(--ink); }

.checkout-body { padding: 22px 26px 26px; }

.pay-methods { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.pay-method {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--r-md);
  transition: all var(--dur-fast);
  width: 100%;
  text-align: left;
}
.pay-method:hover { border-color: var(--primary); background: rgba(37,99,235,0.03); }
.pay-method.selected { border-color: var(--primary); background: rgba(37,99,235,0.05); box-shadow: 0 0 0 3px rgba(37,99,235,0.08); }
.pay-method-icon { width: 38px; height: 38px; border-radius: 9px; background: var(--bg); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 17px; }
.pay-method-name { font-size: 14.5px; font-weight: 600; color: var(--ink); flex: 1; }
.pay-method-radio { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--border-strong); flex-shrink: 0; position: relative; transition: border-color var(--dur-fast); }
.pay-method.selected .pay-method-radio { border-color: var(--primary); }
.pay-method.selected .pay-method-radio::after { content: ''; position: absolute; inset: 3px; border-radius: 50%; background: var(--primary); }

.checkout-upi-input {
  display: none;
  margin-top: 4px;
  margin-bottom: 4px;
}
.pay-method.selected + .checkout-upi-input.active { display: block; }

.coupon-row {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}
.coupon-row input {
  flex: 1;
  padding: 12px 16px;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--r-sm);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color var(--dur-fast);
}
.coupon-row input:focus { border-color: var(--primary); }

.checkout-pay-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--success), #128a3e);
  color: white;
  padding: 16px;
  border-radius: var(--r-md);
  font-size: 15.5px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 10px 24px rgba(22,163,74,0.28);
  transition: transform var(--dur-fast);
}
.checkout-pay-btn:hover { transform: translateY(-2px); }
.checkout-pay-btn:active { transform: translateY(0); }

.checkout-secure-note {
  text-align: center;
  font-size: 12px;
  color: var(--text);
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.checkout-secure-note svg { width: 13px; height: 13px; }

/* Processing state */
.checkout-processing {
  display: none;
  flex-direction: column;
  align-items: center;
  padding: 50px 26px;
  text-align: center;
}
.checkout-processing.active { display: flex; }
.checkout-body.processing-mode { display: none; }

.spinner-ring {
  width: 56px; height: 56px;
  border: 4px solid rgba(37,99,235,0.15);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 22px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.checkout-processing h4 { font-size: 16px; margin-bottom: 8px; }
.checkout-processing p { font-size: 13.5px; color: var(--text); }

/* Success state inside modal (brief, before redirect) */
.checkout-success {
  display: none;
  flex-direction: column;
  align-items: center;
  padding: 50px 26px;
  text-align: center;
}
.checkout-success.active { display: flex; }

.success-check {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: rgba(22,163,74,0.1);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
  animation: popIn 0.5s var(--ease);
}
.success-check svg { width: 36px; height: 36px; color: var(--success); }
@keyframes popIn { 0% { transform: scale(0); } 70% { transform: scale(1.1); } 100% { transform: scale(1); } }

.checkout-success h4 { font-size: 18px; margin-bottom: 6px; }
.checkout-success p { font-size: 14px; color: var(--text); }

@media (max-width: 480px) {
  .checkout-modal { max-width: 100%; }
}

/* ============================================
   Dark mode
   ============================================ */

html.dark {
  --ink: #F9FAFB;
  --bg: #0B0F19;
  --card: #161B26;
  --text: #9CA3AF;
  --text-dark: #E5E7EB;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.32);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.45);
}

html.dark body { background: var(--bg); }
html.dark .navbar.scrolled { background: rgba(11,15,25,0.75); }
html.dark .nav-links { background: rgba(255,255,255,0.04); }
html.dark .nav-links a:hover { background: var(--card); }
html.dark .hero-grain { opacity: 0.3; }
html.dark .chip { color: var(--text-dark); }
html.dark .chip.active { background: var(--primary); border-color: var(--primary); }
html.dark footer { background: #06080F; }

.theme-toggle {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast);
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--primary); }
.theme-toggle svg { width: 18px; height: 18px; color: var(--text-dark); }
.theme-toggle .sun { display: none; }
html.dark .theme-toggle .sun { display: block; }
html.dark .theme-toggle .moon { display: none; }