/* ==========================================================================
   LEARNING RADIUS - BESPOKE HUMAN-CRAFTED STYLESHEET
   Design Theme: Modern Clean EdTech (Tailored typography, grounded cards, no AI clichés)
   ========================================================================== */

:root {
  --brand-purple: #5b21b6;
  --brand-purple-dark: #4c1d95;
  --brand-purple-light: #f5f3ff;
  --brand-purple-surface: #faf8ff;
  --brand-blue: #2563eb;
  --brand-emerald: #059669;
  --brand-amber: #d97706;
  --brand-pink: #e11d48;
  
  --bg-page: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-card: #ffffff;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  
  --border-subtle: #e2e8f0;
  --border-card: #f1f5f9;
}

/* Base resets & typography */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ==========================================================================
   BUTTONS (AUTHENTIC & TACTILE)
   ========================================================================== */

.btn-brand {
  background-color: #5b21b6;
  color: #ffffff;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 12px 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 2px 8px -1px rgba(91, 33, 182, 0.2), 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

.btn-brand:hover {
  background-color: #4c1d95;
  box-shadow: 0 6px 16px -2px rgba(91, 33, 182, 0.3);
  transform: translateY(-1px);
}

.btn-brand:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: #ffffff;
  color: #334155;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 12px 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #94a3b8;
  color: #0f172a;
}

/* ==========================================================================
   CARDS & CONTAINERS (GROUNDED & CLEAN)
   ========================================================================== */

.human-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.human-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 8px 24px -4px rgba(15, 23, 42, 0.08);
}

.human-card-featured {
  background: #ffffff;
  border: 2px solid #5b21b6;
  border-radius: 20px;
  box-shadow: 0 8px 28px -4px rgba(91, 33, 182, 0.12), 0 2px 8px -2px rgba(91, 33, 182, 0.08);
}

/* Step badges */
.step-number {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f8fafc;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* ==========================================================================
   PHONE MOCKUP FRAME (FIXED, PHOTOREALISTIC BEZEL)
   ========================================================================== */

.phone-mockup-frame {
  position: relative;
  background: #0f172a;
  border-radius: 42px;
  padding: 9px;
  box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.1);
  transform: none !important;
  transition: none !important;
}

.phone-screen-inner {
  border-radius: 33px;
  overflow: hidden;
  position: relative;
  background: #000000;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.9);
}

.phone-screen-inner img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: top;
}