/* ==========================================================================
   MedTourEasy — Standalone Checkout Page
   Design System: coss.com/ui (@coss/ui · Base UI + Tailwind v4 Tokens)
   Program Content & Fields: https://rzp.io/l/oIs2xNuC
   Payment Gateway: Paytm Official CheckoutJS (MID: wCYPOA92675637431851)
   ========================================================================== */

:root {
  /* coss.com/ui Exact Color Tokens (Light Mode Default) */
  --background: #ffffff;
  --foreground: #262626;             /* neutral-800 */
  --card: #ffffff;
  --card-foreground: #262626;
  --popover: #ffffff;
  --popover-foreground: #262626;

  --primary: #262626;                /* neutral-800 */
  --primary-hover: #383838;          /* neutral-800/90 */
  --primary-foreground: #fafafa;     /* neutral-50 */

  --secondary: rgba(0, 0, 0, 0.04);
  --secondary-hover: rgba(0, 0, 0, 0.07);
  --secondary-foreground: #262626;

  --muted: rgba(0, 0, 0, 0.04);
  --muted-surface: #f7f7f7;          /* bg-muted/72 on white */
  --muted-foreground: #686868;       /* color-mix(in srgb, neutral-500 90%, black) */

  --accent: rgba(0, 0, 0, 0.04);
  --accent-foreground: #262626;

  /* Semantic Status Colors from coss.com/ui */
  --destructive: #ef4444;            /* red-500 */
  --destructive-foreground: #b91c1c; /* red-700 */
  --destructive-bg: rgba(239, 68, 68, 0.06);
  --destructive-border: rgba(239, 68, 68, 0.32);

  --info: #3b82f6;                   /* blue-500 */
  --info-foreground: #1d4ed8;        /* blue-700 */
  --info-bg: rgba(59, 130, 246, 0.08);
  --info-border: rgba(59, 130, 246, 0.28);

  --success: #10b981;                /* emerald-500 */
  --success-foreground: #047857;     /* emerald-700 */
  --success-bg: rgba(16, 185, 129, 0.08);
  --success-border: rgba(16, 185, 129, 0.28);

  --warning: #f59e0b;                /* amber-500 */
  --warning-foreground: #b45309;     /* amber-700 */

  /* Borders & Focus Rings */
  --border: rgba(0, 0, 0, 0.08);     /* #00000014 */
  --border-halo: rgba(0, 0, 0, 0.055);
  --input: rgba(0, 0, 0, 0.10);      /* #0000001a */
  --ring: #a3a3a3;                   /* neutral-400 */
  --ring-focus: rgba(163, 163, 163, 0.24);

  /* Radii from coss.com/ui (--radius: .625rem) */
  --radius-sm: 0.25rem;              /* 4px */
  --radius-md: 0.375rem;             /* 6px */
  --radius-lg: 0.5rem;               /* 8px */
  --radius-xl: 0.75rem;              /* 12px */
  --radius-2xl: 1rem;                /* 16px */

  /* Shadows from coss.com/ui */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-control: 0 1px 0 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-panel: 0 1px 0 0 rgba(0, 0, 0, 0.04), 0 1px 3px 0 rgba(0, 0, 0, 0.03);
  --shadow-btn-primary: inset 0 1px 0 0 rgba(255, 255, 255, 0.16), 0 1px 2px 0 rgba(38, 38, 38, 0.24);
  --shadow-btn-primary-active: inset 0 1px 0 0 rgba(0, 0, 0, 0.12);
  --shadow-btn-outline: 0 1px 0 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.03);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  color: var(--foreground);
  background-color: #fbfbfb;
  background-image: radial-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 0);
  background-size: 20px 20px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Standalone Checkout Layout Grid
   ========================================================================== */
.coss-checkout-shell {
  min-height: 100vh;
  padding: 36px 20px 64px;
  display: flex;
  justify-content: center;
}

.coss-checkout-grid {
  width: 100%;
  max-width: 1080px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 416px;
  gap: 28px;
  align-items: start;
}


/* ==========================================================================
   coss.com/ui Primitive: Frame & FramePanel (Left Column)
   ========================================================================== */
.coss-frame {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-2xl);
  background-color: var(--muted-surface);
  border: 1px solid var(--border);
  padding: 4px;
  box-shadow: var(--shadow-xs);
}

.coss-frame::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: -5px;
  z-index: -1;
  border-radius: calc(var(--radius-xl) + 4px);
  border: 1px solid var(--border-halo);
}

.coss-frame-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
}

.coss-frame-panel {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background-color: var(--background);
  background-clip: padding-box;
  padding: 22px 24px;
  box-shadow: var(--shadow-panel);
}

.coss-frame-panel + .coss-frame-panel {
  margin-top: 4px;
}

.coss-frame-footer {
  padding: 16px 20px;
}


/* ==========================================================================
   coss.com/ui Primitive: CardFrame & Card (Right Column Sticky Checkout)
   ========================================================================== */
.coss-checkout-column {
  position: sticky;
  top: 28px;
}

.coss-card-frame {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border);
  background-color: var(--muted-surface);
  background-clip: padding-box;
  color: var(--card-foreground);
  box-shadow: var(--shadow-panel);
  padding: 4px;
}

/* Signature coss.com/ui outer halo ring */
.coss-card-frame::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: -5px;
  z-index: -1;
  border-radius: calc(var(--radius-xl) + 4px);
  border: 1px solid var(--border-halo);
}

.coss-card-frame-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 18px 14px;
}

.coss-card-frame-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--foreground);
}

.coss-card-frame-description {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--muted-foreground);
}

.coss-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background-color: var(--card);
  background-clip: padding-box;
  color: var(--card-foreground);
  box-shadow: var(--shadow-panel);
}

.coss-card-panel {
  padding: 22px 20px;
}

.coss-card-frame-footer {
  padding: 12px 16px 10px;
}


/* ==========================================================================
   coss.com/ui Primitive: Badge
   ========================================================================== */
.coss-badge {
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  gap: 4px;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 11.5px;
  font-weight: 500;
  height: 20px;
  padding: 0 6px;
  line-height: 1;
}

.coss-badge svg {
  width: 12px;
  height: 12px;
  opacity: 0.85;
  flex-shrink: 0;
}

.coss-badge-default {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.coss-badge-secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
}

.coss-badge-outline {
  border-color: var(--input);
  background-color: var(--background);
  color: var(--foreground);
}

.coss-badge-info {
  background-color: var(--info-bg);
  color: var(--info-foreground);
}

.coss-badge-success {
  background-color: var(--success-bg);
  color: var(--success-foreground);
}

.coss-badge-lg {
  height: 24px;
  padding: 0 8px;
  font-size: 12px;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: -0.02em;
}

.mono-text {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}


/* ==========================================================================
   coss.com/ui Primitive: Separator
   ========================================================================== */
.coss-separator {
  height: 1px;
  width: 100%;
  background-color: var(--border);
  margin: 18px 0;
  flex-shrink: 0;
}


/* ==========================================================================
   Left Column: Merchant Header & Program Content
   ========================================================================== */
.merchant-identity {
  display: flex;
  align-items: center;
  gap: 12px;
}

.merchant-logo-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--input);
  background-color: var(--background);
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-control);
  flex-shrink: 0;
}

.merchant-logo-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.merchant-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.merchant-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.merchant-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--foreground);
}

.merchant-sub {
  font-size: 12px;
  color: var(--muted-foreground);
}

/* Program Title & Badges */
.program-hero-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.program-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.program-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--foreground);
}

/* Prose Sections */
.prose-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.prose-heading {
  margin: 0 0 6px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--foreground);
  display: flex;
  align-items: center;
  gap: 6px;
}

.arrow-glyph {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted-foreground);
}

.prose-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted-foreground);
}

/* Skills & Tools Specification Grid */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 2px;
}

.spec-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background-color: #fafafa;
  padding: 12px 14px;
}

.spec-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 4px;
}

.spec-label svg {
  width: 13.5px;
  height: 13.5px;
  color: var(--muted-foreground);
  flex-shrink: 0;
}

.spec-value {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted-foreground);
}

/* Curriculum Section */
.panel-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.panel-section-header .prose-heading {
  margin-bottom: 0;
}

.curriculum-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.curriculum-block {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background-color: #fafafa;
  padding: 14px 16px;
}

.curriculum-week-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.curriculum-week-title {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--muted-foreground);
}

.module-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px 14px;
}

.module-grid li {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--foreground);
}

.module-grid li svg {
  width: 14px;
  height: 14px;
  color: var(--muted-foreground);
  flex-shrink: 0;
}

.curriculum-milestones {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.curriculum-block.compact {
  padding: 12px 14px;
}

.curriculum-block.compact .curriculum-week-bar {
  margin-bottom: 6px;
}

.milestone-text {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--foreground);
}

/* Program Benefits List */
.benefits-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.benefits-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--foreground);
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
}

.benefits-list li:last-child {
  border-bottom: none;
}

.benefits-list li:hover {
  background-color: #fafafa;
}

.benefit-check {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  background-color: var(--secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.benefit-check svg {
  width: 12px;
  height: 12px;
  color: var(--foreground);
}

.benefit-highlight {
  font-weight: 600;
  color: var(--foreground);
}

/* coss.com/ui Alert Component */
.coss-alert {
  position: relative;
  display: grid;
  grid-template-columns: 16px 1fr;
  align-items: start;
  column-gap: 10px;
  row-gap: 2px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  padding: 12px 14px;
  font-size: 13px;
}

.coss-alert > svg {
  width: 16px;
  height: 16px;
  margin-top: 2px;
}

.coss-alert-title {
  font-weight: 600;
  color: var(--foreground);
  grid-column: 2;
}

.coss-alert-description {
  color: var(--muted-foreground);
  grid-column: 2;
}

.coss-alert-info {
  border-color: var(--info-border);
  background-color: rgba(59, 130, 246, 0.04);
}

.coss-alert-info > svg {
  color: var(--info);
}

.coss-alert-error {
  border-color: var(--destructive-border);
  background-color: var(--destructive-bg);
  color: var(--destructive-foreground);
}

.coss-alert-error > svg {
  color: var(--destructive);
}

.coss-alert-warning {
  border-color: rgba(245, 158, 11, 0.32);
  background-color: rgba(245, 158, 11, 0.05);
}

.coss-alert-warning > svg {
  color: var(--warning);
}

.coss-alert-warning .coss-alert-title {
  color: var(--warning-foreground);
}

.coss-alert-error .coss-alert-title {
  color: var(--destructive-foreground);
}

.cohort-seats-alert {
  width: 100%;
  margin-top: 2px;
  padding: 10px 12px;
  font-size: 12.5px;
}

.cohort-seats-alert[hidden] {
  display: none !important;
}

/* Support & Terms Frame Footer */
.support-footer {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
}

.support-heading {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted-foreground);
  margin-bottom: 4px;
}

.support-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.support-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--foreground);
  text-decoration: none;
}

.support-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.support-link svg {
  width: 13px;
  height: 13px;
  color: var(--muted-foreground);
}

.dot-sep {
  color: var(--muted-foreground);
}

.support-terms {
  margin: 0;
  font-size: 12.5px;
  color: var(--muted-foreground);
}


/* ==========================================================================
   coss.com/ui Form Primitives: Field, Input, InputGroup, Select, NumberField
   ========================================================================== */
.coss-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.coss-field {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.coss-field-label-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.coss-field-label {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--foreground);
}

.required-mark {
  color: var(--destructive);
  font-weight: 600;
}

/* Input Control & Input */
.coss-input-control {
  position: relative;
  display: inline-flex;
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--input);
  background-color: var(--background);
  background-clip: padding-box;
  box-shadow: var(--shadow-control);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.coss-input {
  width: 100%;
  min-width: 0;
  height: 36px;
  padding: 0 11px;
  border: none;
  border-radius: inherit;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 13.5px;
  color: var(--foreground);
  outline: none;
}

.coss-input::placeholder {
  color: rgba(104, 104, 104, 0.72);
}

.coss-input-control:focus-within {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px var(--ring-focus);
}

/* InputGroup (Phone +91) */
.coss-input-group {
  position: relative;
  display: inline-flex;
  width: 100%;
  align-items: center;
  border-radius: var(--radius-lg);
  border: 1px solid var(--input);
  background-color: var(--background);
  background-clip: padding-box;
  box-shadow: var(--shadow-control);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.coss-input-group:focus-within {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px var(--ring-focus);
}

.coss-input-addon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 10px 0 11px;
  border-right: 1px solid var(--border);
  background-color: rgba(0, 0, 0, 0.02);
  border-radius: calc(var(--radius-lg) - 1px) 0 0 calc(var(--radius-lg) - 1px);
  user-select: none;
}

.addon-country-code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--muted-foreground);
}

.coss-group-input {
  padding-left: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.coss-group-input::placeholder {
  font-family: var(--font-sans);
  letter-spacing: normal;
}

/* SelectTrigger (Cohort) */
.coss-select-wrapper {
  position: relative;
  display: inline-flex;
  width: 100%;
  align-items: center;
  border-radius: var(--radius-lg);
  border: 1px solid var(--input);
  background-color: var(--background);
  background-clip: padding-box;
  box-shadow: var(--shadow-control);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.coss-select-wrapper:focus-within {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px var(--ring-focus);
}

.coss-select {
  width: 100%;
  height: 36px;
  padding: 0 32px 0 11px;
  border: none;
  border-radius: inherit;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 13.5px;
  color: var(--foreground);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.coss-select-icon {
  position: absolute;
  right: 10px;
  width: 15px;
  height: 15px;
  color: var(--muted-foreground);
  opacity: 0.8;
  pointer-events: none;
}

/* Invalid Field State (coss.com/ui aria-invalid tokens) */
.coss-field.invalid .coss-input-control,
.coss-field.invalid .coss-input-group,
.coss-field.invalid .coss-select-wrapper {
  border-color: rgba(239, 68, 68, 0.48);
  box-shadow: none;
}

.coss-field.invalid .coss-input-control:focus-within,
.coss-field.invalid .coss-input-group:focus-within,
.coss-field.invalid .coss-select-wrapper:focus-within {
  border-color: rgba(239, 68, 68, 0.68);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.16);
}

.coss-field-error {
  display: none;
  font-size: 12px;
  color: var(--destructive-foreground);
  line-height: 1.3;
}

.coss-field.invalid .coss-field-error {
  display: block;
}

/* NumberField (Months Stepper) */
.coss-number-field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.number-field-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.number-field-title {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--foreground);
}

.number-field-rate {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--foreground);
}

.muted-slash {
  font-family: var(--font-sans);
  color: var(--muted-foreground);
}

.coss-number-field-group {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 34px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--input);
  background-color: var(--background);
  background-clip: padding-box;
  box-shadow: var(--shadow-control);
}

.coss-number-btn {
  width: 32px;
  height: 100%;
  border: none;
  background: transparent;
  color: var(--foreground);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: background-color 0.12s ease;
}

.coss-number-btn:first-child {
  border-radius: calc(var(--radius-lg) - 1px) 0 0 calc(var(--radius-lg) - 1px);
  border-right: 1px solid var(--border);
}

.coss-number-btn:last-child {
  border-radius: 0 calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px) 0;
  border-left: 1px solid var(--border);
}

.coss-number-btn:hover:not(:disabled) {
  background-color: var(--accent);
}

.coss-number-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.coss-number-btn svg {
  width: 14px;
  height: 14px;
}

.coss-number-value {
  min-width: 38px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--foreground);
  user-select: none;
}

/* Order Summary Box */
.coss-summary-box {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background-color: #fafafa;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.summary-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--muted-foreground);
}

.summary-line-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.summary-total-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.summary-total-label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--foreground);
}

.summary-total-amount {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--foreground);
}

/* Gateway Error Banner */
.gateway-error-banner {
  display: none;
}

.gateway-error-banner.visible {
  display: block;
}


/* ==========================================================================
   coss.com/ui Primitive: Button
   ========================================================================== */
.coss-button {
  position: relative;
  display: inline-flex;
  width: 100%;
  flex-shrink: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  outline: none;
  transition: background-color 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.coss-button svg {
  width: 16px;
  height: 16px;
  opacity: 0.85;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.coss-button-xl {
  height: 40px;
  padding: 0 16px;
}

.coss-button-primary {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--primary-foreground);
  box-shadow: var(--shadow-btn-primary);
}

.coss-button-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.coss-button-primary:hover:not(:disabled) .btn-arrow-icon {
  transform: translateX(2px);
}

.coss-button-primary:active:not(:disabled) {
  box-shadow: var(--shadow-btn-primary-active);
}

.coss-button-primary:focus-visible {
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
}

.coss-button:disabled {
  opacity: 0.64;
  cursor: not-allowed;
  box-shadow: none;
}

.coss-button-outline {
  height: 36px;
  border-color: var(--input);
  background-color: var(--popover);
  color: var(--foreground);
  box-shadow: var(--shadow-btn-outline);
}

.coss-button-outline:hover:not(:disabled) {
  background-color: var(--accent);
}

/* Spinner Animation */
@keyframes coss-spin {
  to {
    transform: rotate(360deg);
  }
}

.coss-spinner {
  animation: coss-spin 0.75s linear infinite;
}


/* ==========================================================================
   CardFrameFooter: Paytm Security Trust Note
   ========================================================================== */
.paytm-security-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.paytm-lock-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--foreground);
}

.paytm-lock-badge svg {
  width: 13.5px;
  height: 13.5px;
  color: var(--muted-foreground);
}

.paytm-lock-badge strong {
  font-weight: 600;
}

.paytm-modal-hint {
  margin: 5px 0 0;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--muted-foreground);
}


/* ==========================================================================
   Verified Payment Receipt View
   ========================================================================== */
.payment-success-card {
  text-align: center;
  padding: 4px 0;
}

.payment-success-card[hidden] {
  display: none;
}

.coss-success-badge-wrap {
  margin-bottom: 10px;
}

.success-title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--foreground);
}

.success-subtitle {
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--muted-foreground);
}

.coss-receipt-table {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background-color: var(--background);
  overflow: hidden;
  margin-bottom: 16px;
  text-align: left;
}

.receipt-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  font-size: 12.5px;
  border-bottom: 1px solid var(--border);
}

.receipt-row:last-child {
  border-bottom: none;
}

.receipt-row span:first-child {
  color: var(--muted-foreground);
}

.receipt-row span:last-child {
  font-weight: 500;
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}


/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 920px) {
  .coss-checkout-shell {
    padding: 20px 12px 48px;
  }

  .coss-checkout-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .coss-checkout-column {
    position: static;
  }
}

@media (max-width: 600px) {
  .coss-frame-header.merchant-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .coss-frame-panel {
    padding: 18px 16px;
  }

  .spec-grid,
  .module-grid,
  .curriculum-milestones,
  .support-footer {
    grid-template-columns: 1fr;
  }
}