/**
 * ExamStudyLive EdTech Pro - Modern Design System 2026
 * Ultra-Modern EdTech UI inspired by Testbook, Oliveboard & Unacademy
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Core Brand Colors */
  --esl-brand: #2563eb;
  --esl-brand-dark: #1d4ed8;
  --esl-brand-deep: #1e3a8a;
  --esl-brand-light: #eff6ff;
  --esl-brand-glow: rgba(37, 99, 235, 0.25);

  /* Accent & Status Colors */
  --esl-amber: #f59e0b;
  --esl-amber-light: #fffbeb;
  --esl-amber-glow: rgba(245, 158, 11, 0.3);
  --esl-emerald: #10b981;
  --esl-emerald-light: #ecfdf5;
  --esl-rose: #f43f5e;
  --esl-rose-light: #fff1f2;
  --esl-indigo: #6366f1;

  /* Surfaces & Backgrounds */
  --esl-dark: #0f172a;
  --esl-dark-surface: #1e293b;
  --esl-bg: #f8fafc;
  --esl-card: #ffffff;
  --esl-border: #e2e8f0;
  --esl-border-subtle: #f1f5f9;

  /* Typography */
  --esl-text-heading: #0f172a;
  --esl-text-body: #334155;
  --esl-text-muted: #64748b;
  --esl-text-light: #94a3b8;
  --esl-font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Radii & Shadows */
  --esl-radius-xs: 6px;
  --esl-radius-sm: 8px;
  --esl-radius-md: 12px;
  --esl-radius-lg: 16px;
  --esl-radius-xl: 24px;
  --esl-radius-pill: 9999px;

  --esl-shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --esl-shadow-hover: 0 20px 25px -5px rgba(37, 99, 235, 0.1), 0 8px 10px -6px rgba(37, 99, 235, 0.06);
  --esl-shadow-modal: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--esl-font);
  background-color: var(--esl-bg);
  color: var(--esl-text-body);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--esl-brand);
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
  color: var(--esl-brand-dark);
}

.esl-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Top Announcement Ribbon */
.esl-top-ribbon {
  background: linear-gradient(90deg, #1e3a8a 0%, #2563eb 50%, #4338ca 100%);
  color: #ffffff;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: relative;
  z-index: 1010;
}

.esl-ribbon-tag {
  background: #f59e0b;
  color: #0f172a;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--esl-radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.esl-top-ribbon a {
  color: #fef08a;
  text-decoration: underline;
  font-weight: 700;
}

/* Header Navbar */
.esl-site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--esl-border);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.esl-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.esl-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.esl-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--esl-dark);
  letter-spacing: -0.5px;
}

.esl-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2563eb, #1e3a8a);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px var(--esl-brand-glow);
}

.esl-logo-icon svg {
  width: 20px;
  height: 20px;
  stroke: #ffffff;
  fill: none;
  stroke-width: 2.2;
}

.esl-brand-logo span.dot {
  color: var(--esl-amber);
}

/* Explore Exams Button & Mega Menu */
.esl-explore-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: #f1f5f9;
  border-radius: var(--esl-radius-pill);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--esl-text-heading);
  border: 1px solid var(--esl-border);
  cursor: pointer;
  transition: all 0.2s;
}

.esl-explore-trigger:hover {
  background: #ffffff;
  border-color: var(--esl-brand);
  color: var(--esl-brand);
}

.esl-mega-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  width: 520px;
  background: #ffffff;
  border-radius: var(--esl-radius-lg);
  box-shadow: var(--esl-shadow-modal);
  border: 1px solid var(--esl-border);
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.esl-explore-wrapper:hover .esl-mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.esl-mega-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--esl-radius-md);
  color: var(--esl-text-heading);
  transition: all 0.2s;
}

.esl-mega-item:hover {
  background: var(--esl-brand-light);
  transform: translateX(3px);
}

.esl-mega-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--esl-brand);
  border: 1px solid var(--esl-border);
  flex-shrink: 0;
}

.esl-mega-item:hover .esl-mega-icon {
  background: var(--esl-brand);
  color: #ffffff;
  border-color: var(--esl-brand);
}

.esl-mega-text h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 2px;
}

.esl-mega-text p {
  font-size: 11.5px;
  color: var(--esl-text-muted);
}

/* Modern Header Search with Key Shortcut */
.esl-header-search-bar {
  flex: 1;
  max-width: 420px;
  position: relative;
}

.esl-header-search-bar input {
  width: 100%;
  height: 44px;
  padding: 0 45px 0 42px;
  background: #f1f5f9;
  border: 1.5px solid transparent;
  border-radius: var(--esl-radius-pill);
  font-size: 14px;
  font-family: inherit;
  color: var(--esl-text-heading);
  outline: none;
  transition: all 0.2s;
}

.esl-header-search-bar input:focus {
  background: #ffffff;
  border-color: var(--esl-brand);
  box-shadow: 0 0 0 4px var(--esl-brand-glow);
}

.esl-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  stroke: var(--esl-text-muted);
  fill: none;
  pointer-events: none;
}

.esl-key-shortcut {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: #e2e8f0;
  color: var(--esl-text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
}

/* Header Action Buttons */
.esl-header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.esl-pass-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff !important;
  font-size: 13.5px;
  font-weight: 700;
  border-radius: var(--esl-radius-pill);
  box-shadow: 0 4px 12px var(--esl-amber-glow);
  transition: 0.2s;
}

.esl-pass-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--esl-amber-glow);
}

/* User Pill & Dropdown */
.esl-user-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px 4px 5px;
  background: #f8fafc;
  border: 1px solid var(--esl-border);
  border-radius: var(--esl-radius-pill);
  cursor: pointer;
  position: relative;
  transition: 0.2s;
}

.esl-user-badge:hover {
  border-color: var(--esl-brand);
  background: #ffffff;
}

.esl-avatar-circle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--esl-brand);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  overflow: hidden;
}

.esl-avatar-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.esl-user-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 230px;
  background: #ffffff;
  border: 1px solid var(--esl-border);
  border-radius: var(--esl-radius-md);
  box-shadow: var(--esl-shadow-modal);
  padding: 8px 0;
  display: none;
  z-index: 100;
}

.esl-user-badge.active .esl-user-menu {
  display: block;
}

.esl-user-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  font-size: 13.5px;
  color: var(--esl-text-body);
  font-weight: 500;
}

.esl-user-menu a:hover {
  background: var(--esl-brand-light);
  color: var(--esl-brand);
}

/* ==========================================================================
   HERO SECTION 2026
   ========================================================================== */
.esl-hero-modern {
  background: radial-gradient(circle at 50% 0%, #1e3a8a 0%, #0f172a 75%);
  color: #ffffff;
  padding: 70px 0 80px 0;
  position: relative;
  overflow: hidden;
}

.esl-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.esl-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--esl-radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: #93c5fd;
  margin: 0 auto 24px auto;
  backdrop-filter: blur(8px);
}

.esl-pill-pulse {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: esl-pulse 2s infinite;
}

@keyframes esl-pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.esl-hero-modern h1 {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.esl-hero-modern h1 span.gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #fef08a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.esl-hero-modern p {
  font-size: clamp(15px, 2.2vw, 18px);
  color: #cbd5e1;
  line-height: 1.6;
  max-width: 720px;
  margin: 0 auto 36px auto;
}

.esl-hero-search-box {
  width: 100%;
  max-width: 680px;
  background: #ffffff;
  border-radius: var(--esl-radius-pill);
  padding: 6px 8px 6px 24px;
  display: flex;
  align-items: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  margin: 0 auto 24px auto;
}

.esl-hero-search-box input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  font-family: inherit;
  color: var(--esl-text-heading);
}

.esl-hero-search-box button {
  background: var(--esl-brand);
  color: #ffffff;
  border: none;
  border-radius: var(--esl-radius-pill);
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: 0.2s;
}

.esl-hero-search-box button:hover {
  background: var(--esl-brand-dark);
}

.esl-quick-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.esl-quick-tags span {
  font-size: 13px;
  color: #94a3b8;
}

.esl-tag-chip {
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--esl-radius-pill);
  font-size: 12.5px;
  color: #ffffff;
  transition: 0.2s;
}

.esl-tag-chip:hover {
  background: #ffffff;
  color: var(--esl-brand);
}

/* ==========================================================================
   CATEGORY CHIPS & TABS (INTERACTIVE FILTER)
   ========================================================================== */
.esl-filter-chips-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  padding: 24px 0;
  margin-bottom: 24px;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.esl-filter-chips-bar::-webkit-scrollbar {
  display: none;
}

.esl-chip {
  padding: 10px 22px;
  background: #ffffff;
  border: 1px solid var(--esl-border);
  border-radius: var(--esl-radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--esl-text-body);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.esl-chip:hover,
.esl-chip.active {
  background: var(--esl-brand);
  color: #ffffff;
  border-color: var(--esl-brand);
  box-shadow: 0 4px 12px var(--esl-brand-glow);
}

/* ==========================================================================
   MODERN TEST CARDS (EDTECH STYLE)
   ========================================================================== */
.esl-section-title-wrap {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
}

.esl-section-title-wrap h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--esl-dark);
  letter-spacing: -0.5px;
}

.esl-section-title-wrap p {
  font-size: 14.5px;
  color: var(--esl-text-muted);
  margin-top: 4px;
}

.esl-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.esl-card-item {
  background: #ffffff;
  border: 1px solid var(--esl-border);
  border-radius: var(--esl-radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--esl-shadow-card);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.esl-card-item:hover {
  transform: translateY(-5px);
  border-color: #93c5fd;
  box-shadow: var(--esl-shadow-hover);
}

.esl-card-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--esl-brand), var(--esl-amber));
  opacity: 0;
  transition: opacity 0.3s;
}

.esl-card-item:hover::before {
  opacity: 1;
}

.esl-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.esl-exam-icon-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--esl-brand-light);
  color: var(--esl-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
}

.esl-badge-pill {
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--esl-radius-pill);
  text-transform: uppercase;
}

.esl-badge-free-mock {
  background: var(--esl-emerald-light);
  color: var(--esl-emerald);
}

.esl-badge-hot {
  background: var(--esl-rose-light);
  color: var(--esl-rose);
}

.esl-card-item h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--esl-text-heading);
  line-height: 1.35;
  margin-bottom: 10px;
}

.esl-meta-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
  padding: 14px 0;
  border-top: 1px dashed var(--esl-border);
  border-bottom: 1px dashed var(--esl-border);
  margin: 16px 0;
  font-size: 12.5px;
  color: var(--esl-text-muted);
}

.esl-meta-col {
  display: flex;
  align-items: center;
  gap: 6px;
}

.esl-meta-col svg {
  width: 15px;
  height: 15px;
  stroke: var(--esl-brand);
  fill: none;
}

.esl-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
}

.esl-test-total {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--esl-dark);
}

.esl-btn-attempt {
  padding: 9px 18px;
  background: var(--esl-brand);
  color: #ffffff !important;
  font-size: 13.5px;
  font-weight: 700;
  border-radius: var(--esl-radius-pill);
  transition: 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.esl-btn-attempt:hover {
  background: var(--esl-brand-dark);
  transform: translateY(-1px);
}

/* ==========================================================================
   DAILY LIVE QUIZ & COUNTDOWN SECTION
   ========================================================================== */
.esl-live-quiz-card {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border-radius: var(--esl-radius-xl);
  padding: 40px;
  color: #ffffff;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 70px;
  box-shadow: 0 20px 30px -10px rgba(15, 23, 42, 0.4);
}

.esl-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  background: rgba(244, 63, 94, 0.2);
  border: 1px solid rgba(244, 63, 94, 0.4);
  color: #fb7185;
  font-size: 12px;
  font-weight: 800;
  border-radius: var(--esl-radius-pill);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.esl-live-quiz-card h3 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  margin-bottom: 12px;
}

.esl-live-timer-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--esl-radius-lg);
  padding: 24px;
  text-align: center;
}

.esl-timer-digits {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 16px 0;
}

.esl-time-block {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 8px;
  padding: 10px 14px;
  min-width: 60px;
}

.esl-time-block span.num {
  font-size: 26px;
  font-weight: 800;
  color: #fef08a;
  display: block;
}

.esl-time-block span.lbl {
  font-size: 10px;
  text-transform: uppercase;
  color: #94a3b8;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   PASS PRO / PRICING SECTION (TESTBOOK PASS STYLE)
   ========================================================================== */
.esl-pass-section {
  background: #ffffff;
  border: 1px solid var(--esl-border);
  border-radius: var(--esl-radius-xl);
  padding: 50px 30px;
  margin-bottom: 70px;
}

.esl-pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 36px;
}

.esl-pricing-card {
  border: 2px solid var(--esl-border);
  border-radius: var(--esl-radius-lg);
  padding: 30px 24px;
  position: relative;
  transition: 0.3s;
  background: #ffffff;
}

.esl-pricing-card.featured {
  border-color: var(--esl-brand);
  box-shadow: 0 10px 25px -5px var(--esl-brand-glow);
  transform: scale(1.03);
}

.esl-popular-tag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--esl-brand);
  color: #ffffff;
  padding: 4px 14px;
  font-size: 11px;
  font-weight: 800;
  border-radius: var(--esl-radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.esl-price-val {
  font-size: 38px;
  font-weight: 800;
  color: var(--esl-dark);
  margin: 14px 0 6px 0;
}

.esl-price-val span {
  font-size: 16px;
  color: var(--esl-text-muted);
  font-weight: 500;
}

.esl-feature-list {
  list-style: none;
  margin: 20px 0 24px 0;
}

.esl-feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--esl-text-body);
  margin-bottom: 12px;
}

.esl-feature-list li svg {
  width: 16px;
  height: 16px;
  stroke: var(--esl-emerald);
  fill: none;
  stroke-width: 2.5;
  flex-shrink: 0;
}

/* ==========================================================================
   AUTHENTICATION MODAL (POPUP)
   ========================================================================== */
.esl-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  padding: 20px;
}

.esl-modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.esl-modal-dialog {
  background: #ffffff;
  border-radius: var(--esl-radius-xl);
  width: 100%;
  max-width: 440px;
  padding: 36px 30px;
  position: relative;
  box-shadow: var(--esl-shadow-modal);
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.esl-modal-backdrop.open .esl-modal-dialog {
  transform: translateY(0);
}

.esl-close-modal {
  position: absolute;
  top: 18px;
  right: 18px;
  background: #f1f5f9;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--esl-text-muted);
  transition: 0.2s;
}

.esl-close-modal:hover {
  background: #e2e8f0;
  color: var(--esl-dark);
}

.esl-modal-tabs {
  display: flex;
  border-bottom: 2px solid var(--esl-border);
  margin-bottom: 24px;
}

.esl-modal-tab-btn {
  flex: 1;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--esl-text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: 0.2s;
}

.esl-modal-tab-btn.active {
  color: var(--esl-brand);
  border-bottom-color: var(--esl-brand);
}

/* ==========================================================================
   MOBILE BOTTOM BAR (APP EXPERIENCE)
   ========================================================================== */
.esl-mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--esl-border);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.05);
  z-index: 999;
  justify-content: space-around;
  align-items: center;
}

.esl-mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--esl-text-muted);
  font-size: 11px;
  font-weight: 600;
  gap: 3px;
  flex: 1;
  height: 100%;
}

.esl-mobile-nav-item svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.esl-mobile-nav-item.active {
  color: var(--esl-brand);
}

/* Responsive */
@media (max-width: 900px) {
  .esl-header-search-bar { display: none; }
  .esl-live-quiz-card { grid-template-columns: 1fr; }
  .esl-pricing-card.featured { transform: none; }
}

@media (max-width: 768px) {
  body { padding-bottom: 70px; }
  .esl-mobile-bottom-bar { display: flex; }
  .esl-cards-grid { grid-template-columns: 1fr; }
  .esl-hero-modern { padding: 45px 0 55px 0; }
  .esl-hero-modern h1 { font-size: 28px; }
  .esl-hero-search-box { flex-direction: column; border-radius: var(--esl-radius-lg); padding: 12px; gap: 10px; }
  .esl-hero-search-box button { width: 100%; justify-content: center; }
}