/* ==========================================================================
   DesiredTeaching.com - home.css (Pure Vanilla CSS ONLY)
   Design Style: Deep Dark Neon, 3D Glassmorphism & Neomorphic Depth
   ========================================================================== */

:root {
  --bg-dark: #070913;
  --bg-surface: rgba(14, 18, 36, 0.65);
  --bg-surface-elevated: rgba(22, 28, 56, 0.72);
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-highlight: rgba(255, 255, 255, 0.28);
  --cyan-neon: #00f2fe;
  --blue-electric: #4facfe;
  --purple-neon: #9b51e0;
  --magenta-neon: #ff007f;
  --gold-specular: #ffd166;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --shadow-neo: -8px -8px 24px rgba(255, 255, 255, 0.03), 12px 14px 30px rgba(0, 0, 0, 0.65);
  --shadow-glow-cyan: 0 0 35px rgba(0, 242, 254, 0.35);
  --shadow-glow-purple: 0 0 35px rgba(155, 81, 224, 0.35);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Plus Jakarta Sans", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Ambient Space Background & Light Orbs */
.ambient-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.38;
  animation: floatOrb 22s infinite alternate ease-in-out;
}

.orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #00f2fe 0%, rgba(79, 172, 254, 0) 70%);
  top: -120px;
  left: -150px;
  animation-duration: 25s;
}

.orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #9b51e0 0%, rgba(155, 81, 224, 0) 70%);
  top: 35%;
  right: -180px;
  animation-duration: 30s;
  animation-delay: -5s;
}

.orb-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #ff007f 0%, rgba(255, 0, 127, 0) 70%);
  bottom: 10%;
  left: 15%;
  animation-duration: 28s;
  animation-delay: -10s;
}

.orb-4 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #ffd166 0%, rgba(255, 209, 102, 0) 70%);
  bottom: -100px;
  right: 20%;
  opacity: 0.18;
  animation-duration: 20s;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 45px) scale(1.12); }
  100% { transform: translate(-45px, 70px) scale(0.95); }
}

.ambient-canvas::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.85) 0%, transparent 80%);
}

/* Container & Global Spacing */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.home-wrapper {
  position: relative;
  z-index: 1;
}

section {
  padding: 95px 0;
  position: relative;
}

h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* 3D Glassmorphic Cards & Neomorphic Accent */
.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  box-shadow: 
    inset 0 1px 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -1px 2px 0 rgba(0, 0, 0, 0.4),
    var(--shadow-neo);
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  transform-style: preserve-3d;
  will-change: transform;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow: 
    inset 0 1px 2px 0 rgba(255, 255, 255, 0.35),
    0 20px 40px -15px rgba(0, 0, 0, 0.7),
    0 0 25px rgba(0, 242, 254, 0.2);
}

/* 3D Specular Glow Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 14px;
  font-size: 0.98rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: none;
  outline: none;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-glow-primary {
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  color: #030816;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.6);
}

.btn-glow-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 32px rgba(0, 242, 254, 0.65), inset 0 1px 2px rgba(255, 255, 255, 0.9);
  color: #000;
}

.btn-glow-whatsapp {
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.4);
}

.btn-glow-whatsapp:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
  color: #fff;
}

.btn-glass-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-glass-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--cyan-neon);
  color: var(--cyan-neon);
  transform: translateY(-2px);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--cyan-neon);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.18;
  margin-bottom: 16px;
  color: #ffffff;
}

.section-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--cyan-neon) 75%, var(--purple-neon) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

.center-text {
  text-align: center;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: 100px;
  padding-bottom: 90px;
  text-align: center;
}

.hero-content {
  max-width: 940px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 22px;
  border-radius: 100px;
  background: rgba(155, 81, 224, 0.12);
  border: 1px solid rgba(155, 81, 224, 0.35);
  color: #d8b4fe;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(155, 81, 224, 0.2);
  cursor: pointer;
}

.hero-badge .pulsing-dot {
  width: 8px;
  height: 8px;
  background-color: var(--cyan-neon);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--cyan-neon);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.4rem);
  line-height: 1.12;
  margin-bottom: 22px;
  font-weight: 800;
}

.hero-tagline {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 34px auto;
  font-weight: 400;
}

.trust-badges-row {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 38px;
}

.trust-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(12px);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 0.86rem;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.trust-pill svg {
  width: 16px;
  height: 16px;
  color: var(--cyan-neon);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-3d-banner {
  margin-top: 60px;
  border-radius: 28px;
  padding: 30px;
  background: linear-gradient(145deg, rgba(20, 26, 54, 0.7), rgba(11, 14, 28, 0.85));
  border: 1px solid rgba(255, 255, 255, 0.14);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  text-align: left;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

.stat-item {
  padding: 16px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-item .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--cyan-neon);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-item .desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   METHODOLOGY SECTION (4-CARD GRID)
   ========================================================================== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
  margin-top: 50px;
}

.method-card {
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}

.card-level-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  margin-bottom: 22px;
  font-size: 1.25rem;
  font-weight: 800;
}

.badge-beginner {
  background: rgba(0, 242, 254, 0.15);
  border: 1px solid rgba(0, 242, 254, 0.4);
  color: var(--cyan-neon);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.2);
}

.badge-advance {
  background: rgba(155, 81, 224, 0.15);
  border: 1px solid rgba(155, 81, 224, 0.4);
  color: #c084fc;
  box-shadow: 0 0 20px rgba(155, 81, 224, 0.2);
}

.badge-mastery {
  background: rgba(255, 209, 102, 0.15);
  border: 1px solid rgba(255, 209, 102, 0.4);
  color: var(--gold-specular);
  box-shadow: 0 0 20px rgba(255, 209, 102, 0.2);
}

.badge-wlue {
  background: rgba(255, 0, 127, 0.15);
  border: 1px solid rgba(255, 0, 127, 0.4);
  color: #ff409f;
  box-shadow: 0 0 20px rgba(255, 0, 127, 0.2);
}

.method-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: #fff;
}

.method-card .method-acronym {
  font-size: 0.95rem;
  color: var(--cyan-neon);
  margin-bottom: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.method-card p {
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.65;
  flex-grow: 1;
}

.features-strip {
  margin-top: 45px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.feature-pill-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  padding: 20px;
  border-radius: 18px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.feature-pill-box .icon-box {
  background: rgba(0, 242, 254, 0.1);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-neon);
  flex-shrink: 0;
}

.feature-pill-box h4 {
  font-size: 0.98rem;
  color: #fff;
  margin-bottom: 4px;
}

.feature-pill-box p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   PRICING PLANS
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 28px;
  margin-top: 50px;
}

.pricing-card {
  padding: 42px 32px;
  border-radius: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  background: linear-gradient(155deg, rgba(32, 40, 78, 0.85), rgba(16, 20, 42, 0.92));
  border: 1px solid rgba(0, 242, 254, 0.45);
  box-shadow: 0 20px 50px -10px rgba(0, 242, 254, 0.25), inset 0 1px 2px rgba(255, 255, 255, 0.35);
}

.plan-badge {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.plan-badge.popular {
  background: linear-gradient(135deg, var(--cyan-neon), var(--purple-neon));
  color: #000;
}

.pricing-card .plan-name {
  font-size: 1.45rem;
  color: #fff;
  margin-bottom: 8px;
}

.pricing-card .plan-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 42px;
}

.pricing-card .price-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-glass);
}

.price-wrap .currency {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--cyan-neon);
}

.price-wrap .amount {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: #ffffff;
}

.price-wrap .period {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 34px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pricing-features li {
  font-size: 0.92rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 12px;
}

.pricing-features li svg {
  width: 18px;
  height: 18px;
  color: var(--cyan-neon);
  flex-shrink: 0;
}

/* ==========================================================================
   STORAGE CARD & BOXES (CLEAN CONSOLIDATED)
   ========================================================================== */
.storage-card {
  margin-top: 45px;
  padding: 34px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(22, 28, 54, 0.55), rgba(12, 16, 32, 0.7));
  border: 1px solid rgba(255, 209, 102, 0.25);
  box-sizing: border-box;
  width: 100%;
}

.storage-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.storage-header .storage-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  max-width: 48px;
  max-height: 48px;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  background: rgba(255, 209, 102, 0.12);
  border: 1px solid rgba(255, 209, 102, 0.3);
  color: var(--gold-specular);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.storage-header .storage-icon i {
  font-size: 1.25rem;
  line-height: 1;
}

.storage-header > div {
  flex: 1;
}

.storage-header h3 {
  line-height: 1.3;
  margin-bottom: 6px;
}

.storage-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  width: 100%;
}

.storage-box {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 22px 20px;
  box-sizing: border-box;
  width: 100%;
}

.storage-box h4 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: #fff;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.35;
  width: 100%;
}

.storage-box h4 i,
.storage-box h4 svg {
  flex-shrink: 0;
  font-size: 1.15rem;
  line-height: 1.35;
  margin-top: 1px;
}

.storage-box p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  width: 100%;
}

.storage-box .cost-tag {
  display: inline-block;
  margin-top: 10px;
  font-weight: 700;
  color: var(--cyan-neon);
  font-size: 0.9rem;
}

/* ==========================================================================
   TEACHER DEMOGRAPHICS & TRACKS
   ========================================================================== */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
  margin-top: 45px;
}

.demo-card {
  padding: 28px 24px;
  border-radius: 20px;
  position: relative;
  border-left: 3px solid var(--cyan-neon);
}

.demo-card:nth-child(2) { border-left-color: var(--blue-electric); }
.demo-card:nth-child(3) { border-left-color: var(--purple-neon); }
.demo-card:nth-child(4) { border-left-color: var(--gold-specular); }
.demo-card:nth-child(5) { border-left-color: #ff409f; }
.demo-card:nth-child(6) { border-left-color: #00f2fe; }
.demo-card:nth-child(7) { border-left-color: #ffd166; }

.demo-age-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  margin-bottom: 12px;
}

.demo-card h3 {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 8px;
}

.demo-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   5-PILLAR INSTITUTIONAL PARTNERSHIP GRID
   ========================================================================== */
.institute-grid-five {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 50px;
}

.institute-card-pillar {
  padding: 30px 22px;
  border-radius: 22px;
  display: flex;
  flex-direction: column;
  text-align: center;
  align-items: center;
  position: relative;
}

.inst-pillar-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 20px;
}

.inst-icon-pill {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.institute-card-pillar h3 {
  font-size: 1.12rem;
  color: #ffffff;
  margin-bottom: 10px;
  line-height: 1.35;
  min-height: 48px;
}

.inst-meta-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: #94a3b8;
}

.inst-subtext {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.border-blue   { border-top: 3px solid #38bdf8; }
.badge-blue    { background: rgba(56, 189, 248, 0.2); color: #38bdf8; }
.icon-blue     { background: rgba(56, 189, 248, 0.12); color: #38bdf8; }

.border-teal   { border-top: 3px solid #2dd4bf; }
.badge-teal    { background: rgba(45, 212, 191, 0.2); color: #2dd4bf; }
.icon-teal     { background: rgba(45, 212, 191, 0.12); color: #2dd4bf; }

.border-green  { border-top: 3px solid #4ade80; }
.badge-green   { background: rgba(74, 222, 128, 0.2); color: #4ade80; }
.icon-green    { background: rgba(74, 222, 128, 0.12); color: #4ade80; }

.border-orange { border-top: 3px solid #fb923c; }
.badge-orange  { background: rgba(251, 146, 60, 0.2); color: #fb923c; }
.icon-orange   { background: rgba(251, 146, 60, 0.12); color: #fb923c; }

.border-gold   { border-top: 3px solid #facc15; }
.badge-gold    { background: rgba(250, 204, 21, 0.2); color: #facc15; }
.icon-gold     { background: rgba(250, 204, 21, 0.12); color: #facc15; }

/* ==========================================================================
   EARNING CALCULATOR (DESKTOP CORE)
   ========================================================================== */
.calculator-container {
  margin-top: 50px;
  padding: 45px 40px;
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(22, 28, 58, 0.75), rgba(11, 14, 28, 0.9));
  border: 1px solid rgba(0, 242, 254, 0.3);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), var(--shadow-glow-cyan);
}

.calc-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 45px;
  align-items: center;
}

.slider-group {
  margin-bottom: 26px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.slider-header label {
  font-size: 0.98rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.35;
}

.slider-header .current-val {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--cyan-neon);
  white-space: nowrap;
  flex-shrink: 0;
  text-align: right;
  letter-spacing: 0.02em;
}

.custom-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  outline: none;
  margin: 12px 0;
  vertical-align: middle;
  transition: opacity 0.2s;
}

.custom-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--cyan-neon);
  cursor: pointer;
  box-shadow: 0 0 14px var(--cyan-neon);
  border: 2px solid #ffffff;
  margin-top: -8px; /* (22px thumb - 6px track) / 2 = 8px offset */
  transition: transform 0.15s ease-in-out;
}

.custom-range::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.custom-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--cyan-neon);
  border: 2px solid #ffffff;
  box-shadow: 0 0 14px var(--cyan-neon);
  cursor: pointer;
}

.calc-result-box {
  background: rgba(8, 11, 24, 0.75);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 34px;
  text-align: center;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

.calc-result-box .result-title {
  font-size: 0.92rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.calc-result-box .gross-monthly {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  font-weight: 900;
  color: var(--cyan-neon);
  line-height: 1;
  margin-bottom: 6px;
  text-shadow: 0 0 30px rgba(0, 242, 254, 0.4);
}

.calc-result-box .gross-annual {
  font-size: 1.05rem;
  color: var(--gold-specular);
  font-weight: 600;
  margin-bottom: 20px;
}

.calc-result-box .calc-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 22px;
}

/* ==========================================================================
   UNIFIED RESPONSIVE MEDIA QUERIES (NO DUPLICATES)
   ========================================================================= */

/* Tablet (<= 992px) */
@media (max-width: 992px) {
  .calc-layout {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .institute-grid-five {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

/* Mobile Devices (<= 640px) */
@media (max-width: 640px) {
  .hero-section {
    padding-top: 60px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .trust-badges-row,
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .trust-pill,
  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }

  /* Storage Mobile */
  .storage-card {
    padding: 22px 16px;
    margin-top: 30px;
    margin-bottom: 40px;
    border-radius: 20px;
  }
  .storage-header {
    gap: 12px;
    margin-bottom: 18px;
  }
  .storage-header .storage-icon {
    width: 42px;
    height: 42px;
    min-width: 42px;
    min-height: 42px;
    max-width: 42px;
    max-height: 42px;
    border-radius: 12px;
    margin-top: 2px;
  }
  .storage-header .storage-icon i {
    font-size: 1.1rem;
  }
  .storage-header h3 {
    font-size: 1.08rem;
  }
  .storage-header p {
    font-size: 0.82rem;
    line-height: 1.45;
  }
  .storage-options-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .storage-box {
    padding: 18px 14px;
  }
  .storage-box h4 {
    font-size: 0.96rem;
    gap: 8px;
    word-break: break-word;
  }
  .storage-box h4 i,
  .storage-box h4 svg {
    font-size: 1.05rem;
  }
  .storage-box p {
    font-size: 0.85rem;
  }

  /* Calculator Mobile */
  #calculator {
    padding-bottom: 95px; /* Floating WhatsApp button safety */
  }
  .calculator-container {
    padding: 24px 16px;
    margin-top: 30px;
    border-radius: 20px;
  }
  .calc-layout {
    gap: 28px;
  }
  .slider-group {
    margin-bottom: 22px;
  }
  .slider-header {
    margin-bottom: 10px;
  }
  .slider-header label {
    font-size: 0.86rem;
    line-height: 1.35;
    flex: 1;
  }
  .slider-header .current-val {
    font-size: 1.02rem;
  }
  .calc-result-box {
    padding: 22px 16px;
    border-radius: 18px;
  }
  .calc-result-box .result-title {
    font-size: 0.8rem;
  }
  .calc-result-box .gross-monthly {
    font-size: 2.2rem;
  }
  .calc-result-box .gross-annual {
    font-size: 0.95rem;
    margin-bottom: 14px;
  }
  .calc-result-box .calc-note {
    font-size: 0.76rem;
    margin-bottom: 18px;
  }
}