/* ==================== CSS VARIABLES ==================== */
:root {
  --primary-blue: #2f5aae;
  --coral: #e96656;
  --dark: #121212;
  --light-bg: #f4f5f7;
  --white: #ffffff;
  --green: #0eac09;
  --green-dark: #01b90a;
  --yellow-banner: #fabe0e;
  --cream: #fdefc5;
  --text-dark: #272626;
  --text-body: #666666;
  --text-light: #b7b7b7;
  --gray-heading: #b1b1b1;
  --font-main: 'Montserrat', sans-serif;
  --font-heading: 'Roboto', sans-serif;
  --container-max: 1170px;
  --header-height: 100px;
  --topbar-height: 35px;
}

/* ==================== RESET & BASE ==================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

/* ==================== CONTAINER ==================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 15px;
}

/* ==================== READING PROGRESS BAR ==================== */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--primary-blue);
  z-index: 9999;
  width: 0;
  transition: width 0.1s linear;
}

/* ==================== TOP ANNOUNCEMENT BAR ==================== */
.top-bar {
  background: #5c5c5c;
  color: #fff;
  text-align: center;
  font-size: 19px;
  font-weight: 600;
  padding: 8px 15px;
  text-transform: uppercase;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==================== HEADER / NAVIGATION ==================== */
.site-header {
  background: #eaeaea;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 89px;
  width: auto;
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: 20px;
}

.btn-attend {
  background: #0eac09;
  color: var(--white);
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.3s ease, transform 0.2s ease;
}

.btn-attend:hover {
  background: #0c9608;
  transform: translateY(-1px);
}

.btn-exhibit {
  background: #002bd1;
  color: var(--white);
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.3s ease, transform 0.2s ease;
}

.btn-exhibit:hover {
  background: #0022a8;
  transform: translateY(-1px);
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  gap: 2px;
}

.nav-item a {
  display: block;
  padding: 8px 16px;
  color: var(--text-dark);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background 0.3s ease, color 0.3s ease;
  border-radius: 3px;
}

.nav-item a:hover,
.nav-item a.active {
  background: rgba(0, 0, 0, 0.08);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
}

/* ==================== GREEN BANNER ==================== */
.green-banner {
  background: #01b90a;
  padding: 10px 0;
  text-align: center;
}

.green-banner h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 900;
  text-transform: uppercase;
  margin: 0;
}

/* ==================== HERO SECTION ==================== */
.hero-section {
  background: url('../images/backgrounds/crowd.jpg') center/cover no-repeat;
  position: relative;
  padding: 60px 0;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 50, 0, 0.7);
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero-text {
  flex: 1;
  text-align: left;
}

.hero-video {
  flex: 1;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 86px;
  font-weight: 900;
  color: #f8f8f8;
  text-transform: uppercase;
  margin-bottom: 20px;
  letter-spacing: 4px;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 500;
  color: #e0e0e0;
  margin-bottom: 30px;
  max-width: 700px;
}

.hero-subtitle strong {
  color: #fff;
  font-weight: 700;
}

.hero-milestone {
  font-size: 15px;
  font-weight: 400;
  color: #c0c0c0;
  max-width: 800px;
  line-height: 1.8;
}

/* Video Embed */
.hero-video-container {
  max-width: 537px;
  width: 100%;
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: 0;
}

.hero-video-container iframe,
.hero-video-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 0;
  object-fit: cover;
}

/* ==================== OSI DESCRIPTION ==================== */
.osi-description {
  background: var(--white);
  padding: 60px 0;
  text-align: center;
}

.osi-description .gold-text {
  font-size: 32px;
  font-weight: 500;
  color: #765800;
  margin-bottom: 20px;
}

.osi-description .body-text {
  font-size: 21px;
  font-weight: 400;
  color: #272626;
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ==================== GOLDEN BANNER ==================== */
.golden-banner {
  background: #fabe0e;
  padding: 10px 0;
  text-align: center;
}

.golden-banner h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 900;
  text-transform: uppercase;
  margin: 0;
}

/* ==================== GREEN CTA SECTION ==================== */
.green-cta-section {
  background: #01b90a;
  padding: 30px 0;
  text-align: center;
}

/* ==================== SECTION HEADINGS ==================== */
.section-heading {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 900;
  text-transform: uppercase;
  text-align: center;
  color: var(--text-dark);
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.section-heading-gray {
  font-size: 37px;
  font-weight: 700;
  color: #b1b1b1;
  text-align: center;
  margin-bottom: 20px;
}

/* Yellow/Orange banner style for stats heading */
.section-heading-banner {
  background: var(--yellow-banner);
  display: inline-block;
  padding: 12px 40px;
  margin-bottom: 30px;
}

.section-heading-banner .section-heading {
  margin-bottom: 0;
  color: #000;
  font-size: 28px;
}

.section-heading-wrapper {
  text-align: center;
  margin-bottom: 10px;
}

.section-subheading {
  text-align: center;
  font-size: 16px;
  font-weight: 400;
  color: var(--text-body);
  margin-bottom: 40px;
}

/* ==================== STATISTICS SECTION ==================== */
.statistics-section {
  background: #eaeaea;
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 30px;
}

.stat-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.stat-card h3 {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  text-align: center;
  padding: 12px 10px;
  color: var(--text-dark);
  letter-spacing: 0.5px;
  background: #fafafa;
  border-bottom: 1px solid #eee;
}

.stat-card img {
  width: 100%;
  height: auto;
  display: block;
}

/* Audience Profile Row */
.audience-row {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 30px 0;
}

.audience-chart {
  flex: 1.5;
}

.audience-chart img {
  width: 100%;
  max-width: 550px;
}

.audience-numbers {
  flex: 1;
}

.audience-numbers img {
  width: 100%;
  max-width: 400px;
}

/* Section Divider */
.section-divider {
  border: none;
  border-top: 1px solid #ccc;
  margin: 40px 0;
}

/* Conferences Images Row */
.conferences-images {
  display: flex;
  align-items: flex-start;
  gap: 30px;
  margin: 30px 0;
  justify-content: center;
}

.conferences-images img {
  max-width: 48%;
  height: auto;
}

/* Stat CTA */
.stats-cta {
  text-align: center;
  margin-top: 40px;
}

.btn-green {
  background: #06b92b;
  color: var(--white);
  padding: 14px 35px;
  font-size: 20px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border-radius: 3px;
  display: inline-block;
  transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(6, 185, 43, 0.3);
}

.btn-green:hover {
  background: #05a327;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 185, 43, 0.4);
}

/* ==================== PAST PARTNERS ==================== */
.partners-section {
  background: var(--white);
  padding: 80px 0;
}

.partners-image {
  margin: 30px 0;
  text-align: center;
}

.partners-image img {
  width: 100%;
  max-width: 1024px;
  margin: 0 auto;
  border-radius: 4px;
}

.partners-cta {
  text-align: center;
  margin-top: 30px;
}

/* ==================== CONFERENCE BACKGROUND SECTION ==================== */
.conference-bg-section {
  background: url('../images/backgrounds/conference-main.jpg') center/cover no-repeat;
  padding: 60px 0;
  position: relative;
}

.conference-bg-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.conference-bg-section .container {
  position: relative;
  z-index: 1;
}

/* ==================== CROWD BACKGROUND SECTION ==================== */
.crowd-section {
  background: url('../images/backgrounds/crowd.jpg') center/cover no-repeat;
  padding: 60px 0;
  text-align: center;
  position: relative;
}

.crowd-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.crowd-section .container {
  position: relative;
  z-index: 1;
}

/* ==================== GURUS / SPEAKERS SECTION ==================== */
.gurus-section {
  background: #f3f0f0;
  padding: 80px 0;
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  padding: 40px 0;
}

/* Speaker Card */
.speaker-card {
  background: #fff;
  border-left: 4px solid #2f5aae;
  padding: 20px 15px;
  text-align: center;
  transition: transform 0.3s ease;
}

.speaker-card:hover {
  transform: translateY(-3px);
}

/* Speaker Photo (circular, matching original 132px) */
.speaker-photo-wrapper {
  width: 132px;
  height: 132px;
  margin: 0 auto 12px;
  perspective: 700px;
}

.speaker-flip-card {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: all .5s ease;
  text-align: center;
  margin: 0 auto;
}

.speaker-photo-wrapper:hover .speaker-flip-card {
  transform: rotateY(180deg);
}

.flip-front,
.flip-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 50%;
  overflow: hidden;
  transition: all .5s ease;
}

.flip-back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, var(--green-dark), var(--primary-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.flip-back-content {
  color: var(--white);
  font-size: 12px;
  padding: 15px;
  text-align: center;
  line-height: 1.4;
}

.flip-back-content .speaker-back-name {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 5px;
}

.flip-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  image-orientation: from-image;
}

/* Speaker Text */
.speaker-name {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 500;
  text-transform: capitalize;
  margin-bottom: 6px;
  line-height: 1.3;
  color: #000;
}

.speaker-name a {
  color: #000;
}

.speaker-name a:hover {
  color: var(--primary-blue);
}

.speaker-title {
  font-size: 13px;
  font-weight: 400;
  color: #666;
  margin-bottom: 12px;
  line-height: 1.5;
  min-height: 40px;
}

/* LinkedIn Icon Badge */
.speaker-linkedin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: #0077b5;
  color: var(--white);
  border-radius: 0;
  font-size: 15px;
  transition: background 0.3s ease, transform 0.2s ease;
}

.speaker-linkedin:hover {
  background: #076a9a;
  transform: scale(1.1);
}

/* ==================== TRACKS SECTION ==================== */
.tracks-section {
  background: #fdefc5;
  padding: 70px 0;
}

.tracks-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 30px;
}

.tracks-table td {
  border: 1px solid #ddd;
  padding: 15px 20px;
  text-align: center;
  font-size: 18px;
  font-weight: 900;
  text-transform: uppercase;
}

/* Legacy tracks grid (fallback) */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 30px;
}

.track-card {
  background: var(--white);
  border: 1px solid #ddd;
  padding: 15px 20px;
  text-align: center;
}

.track-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--text-dark);
  margin-bottom: 0;
}

.track-card p {
  font-size: 13px;
  color: var(--text-body);
}

/* ==================== SESSIONS LIST ==================== */
.sessions-list {
  margin-top: 40px;
}

.sessions-list h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 20px;
  text-align: center;
}

.sessions-list ul {
  columns: 2;
  column-gap: 40px;
  list-style: disc;
  padding-left: 20px;
}

.sessions-list li {
  font-size: 14px;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.5;
  break-inside: avoid;
  list-style: disc;
}

/* ==================== WORKSHOPS SECTION ==================== */
.workshops-section {
  background: #fdefc5;
  padding: 70px 0;
}

/* ==================== CREAM SECTIONS ==================== */
.cream-section {
  background: #fdefc5;
  padding: 60px 0;
}

/* ==================== TESTIMONIALS SECTION ==================== */
.testimonials-section {
  padding: 60px 0;
}

.testimonials-banner {
  background: #fabe0e;
  padding: 10px 0;
  text-align: center;
  margin-bottom: 40px;
}

.testimonials-banner h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 900;
  text-transform: uppercase;
  margin: 0;
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border-radius: 3px;
  color: var(--white);
  transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.btn-blue {
  background: var(--primary-blue);
}

.btn-blue:hover {
  background: #254a92;
}

.btn-coral {
  background: var(--coral);
}

.btn-coral:hover {
  background: #d4553f;
}

/* ==================== CTA SECTION ==================== */
.cta-section {
  background: var(--white);
  padding: 70px 0;
  text-align: center;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 25px;
  flex-wrap: wrap;
}

/* ==================== EXHIBITORS FORM ==================== */
.exhibitors-section {
  background: #efefef;
  padding: 70px 0;
}

.exhibitors-form {
  max-width: 600px;
  margin: 30px auto 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.exhibitors-form input,
.exhibitors-form textarea {
  font-family: var(--font-main);
  font-size: 14px;
  padding: 12px 15px;
  border: 2px solid #ddd;
  border-radius: 3px;
  outline: none;
  transition: border-color 0.3s ease;
}

.exhibitors-form input:focus,
.exhibitors-form textarea:focus {
  border-color: var(--primary-blue);
}

.exhibitors-form textarea {
  min-height: 120px;
  resize: vertical;
}

.exhibitors-form .btn-send {
  background: #69727d;
  color: var(--white);
  padding: 12px 30px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.exhibitors-form .btn-send:hover {
  background: #5a6370;
}

/* ==================== CONFERENCE BANNER ==================== */
.conference-banner {
  margin-top: 30px;
  text-align: center;
}

.conference-banner img {
  width: 100%;
  max-width: 1024px;
  margin: 0 auto;
  border-radius: 4px;
}

/* ==================== FOOTER ==================== */
.site-footer {
  background: #0c0c0c;
  padding: 60px 0 0;
  color: var(--text-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-light);
  font-size: 14px;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-text {
  font-size: 14px;
  line-height: 1.7;
  color: #999;
  margin-bottom: 15px;
}

.footer-highlight {
  font-size: 16px;
  font-weight: 700;
  color: var(--coral);
}

.social-links {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid #666;
  color: #999;
  font-size: 15px;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: var(--white);
}

.footer-editions {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  margin-bottom: 30px;
  text-align: center;
}

.footer-editions h4 {
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 15px;
}

.editions-list {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.editions-list a {
  color: var(--text-light);
  font-size: 14px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  transition: all 0.3s ease;
}

.editions-list a:hover {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: var(--white);
}

.footer-bottom {
  background: #24292e;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #777;
}

.footer-bottom-links {
  display: flex;
  justify-content: center;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.footer-bottom-links a {
  color: #999;
  font-size: 13px;
  transition: color 0.3s ease;
}

.footer-bottom-links a:hover {
  color: var(--white);
}

.footer-bottom-links span {
  color: #555;
  font-size: 13px;
}

/* ==================== SCROLL TO TOP ==================== */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 18px;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background: #254a92;
  transform: translateY(-3px);
}

/* ==================== SCROLL REVEAL ANIMATION ==================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==================== RESPONSIVE -- LARGE DESKTOP ==================== */
@media (max-width: 1170px) {
  .speakers-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .speaker-photo-wrapper {
    width: 120px;
    height: 120px;
  }
}

/* ==================== RESPONSIVE -- TABLET ==================== */
@media (max-width: 960px) {
  .speakers-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }

  .speaker-photo-wrapper {
    width: 110px;
    height: 110px;
  }

  .header-actions {
    display: none;
  }

  /* Mobile navigation */
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #eaeaea;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
  }

  .main-nav.active {
    display: block;
  }

  .nav-menu {
    flex-direction: column;
    padding: 10px 0;
  }

  .nav-item a {
    padding: 12px 20px;
    border-radius: 0;
  }

  .nav-item a:hover {
    background: rgba(0, 0, 0, 0.05);
  }

  .mobile-menu-toggle {
    display: block;
  }

  .hero-title {
    font-size: 52px;
    letter-spacing: 3px;
  }

  .hero-grid {
    flex-direction: column;
    text-align: center;
  }

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

  .section-heading {
    font-size: 26px;
  }

  .section-heading-gray {
    font-size: 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .sessions-list ul {
    columns: 1;
  }

  .tracks-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tracks-table td {
    font-size: 15px;
    padding: 12px 15px;
  }
}

/* ==================== RESPONSIVE -- MOBILE ==================== */
@media (max-width: 576px) {
  .top-bar {
    font-size: 12px;
    padding: 6px 10px;
  }

  .speakers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .speaker-photo-wrapper {
    width: 110px;
    height: 110px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .audience-row {
    flex-direction: column;
  }

  .conferences-images {
    flex-direction: column;
    align-items: center;
  }

  .conferences-images img {
    max-width: 100%;
  }

  .hero-section {
    padding: 40px 0;
  }

  .hero-title {
    font-size: 36px;
    letter-spacing: 2px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .hero-milestone {
    font-size: 13px;
  }

  .section-heading {
    font-size: 22px;
  }

  .section-heading-gray {
    font-size: 26px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .statistics-section,
  .partners-section,
  .gurus-section,
  .tracks-section,
  .workshops-section {
    padding: 50px 0;
  }

  .tracks-grid {
    grid-template-columns: 1fr;
  }

  .tracks-table td {
    display: block;
    width: 100%;
    font-size: 14px;
  }

  .tracks-table tr {
    display: block;
    margin-bottom: 0;
  }

  .green-banner h2,
  .golden-banner h2 {
    font-size: 22px;
  }

  .osi-description .gold-text {
    font-size: 24px;
  }

  .osi-description .body-text {
    font-size: 17px;
  }
}

/* ==================== RESPONSIVE -- SMALL MOBILE ==================== */
@media (max-width: 320px) {
  .speaker-photo-wrapper {
    width: 100px;
    height: 100px;
  }

  .hero-title {
    font-size: 24px;
  }

  .speaker-name {
    font-size: 13px;
  }

  .speaker-title {
    font-size: 11px;
  }
}