/* Modern Ocean-Themed Typography */
@import url("https://fonts.googleapis.com/css2?family=Rubik:wght@300;400;500;600;700;800&family=Manrope:wght@300;400;500;600;700;800&display=swap");

:root {
  /* Ocean Color Palette - Darker Theme */
  --ocean-deep: #0f172a;
  --ocean-blue: #1e293b;
  --ocean-medium: #334155;
  --ocean-light: #475569;
  --ocean-surface: #64748b;
  --ocean-foam: #94a3b8;
  --ocean-mist: #cbd5e1;
  --ocean-crystal: #e2e8f0;

  /* Accent Colors */
  --coral-accent: #ff6b6b;
  --seaweed-green: #2e8b57;
  --sunset-orange: #ff8c42;
  --pearl-white: #fefefe;
  --wave-blue: #4fc3f7;
  --deep-teal: #006064;

  /* Gradients - Darker Ocean Theme */
  --gradient-ocean-deep: linear-gradient(
    135deg,
    #0f172a 0%,
    #1e293b 50%,
    #334155 100%
  );
  --gradient-ocean-surface: linear-gradient(
    135deg,
    #1e293b 0%,
    #334155 30%,
    #475569 70%,
    #64748b 100%
  );
  --gradient-underwater: linear-gradient(
    180deg,
    #0f172a 0%,
    #1e293b 25%,
    #334155 50%,
    #475569 75%,
    #64748b 100%
  );
  --gradient-wave: linear-gradient(
    135deg,
    #4fc3f7 0%,
    #29b6f6 50%,
    #0288d1 100%
  );
  --gradient-coral: linear-gradient(
    135deg,
    #ff6b6b 0%,
    #ff8a80 50%,
    #ffab91 100%
  );
  --gradient-seaweed: linear-gradient(
    135deg,
    #2e8b57 0%,
    #66bb6a 50%,
    #81c784 100%
  );

  /* Spacing & Effects */
  --border-radius: 20px;
  --border-radius-lg: 32px;
  --border-radius-sm: 12px;
  --shadow-ocean: 0 8px 32px rgba(15, 23, 42, 0.25);
  --shadow-wave: 0 12px 40px rgba(79, 195, 247, 0.2);
  --shadow-deep: 0 20px 60px rgba(15, 23, 42, 0.35);
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-wave: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Animations */
  --wave-animation: 8s ease-in-out infinite;
  --bubble-float: 6s ease-in-out infinite;
  --bubble-rise: 4s linear infinite;
  --seaweed-sway: 6s ease-in-out infinite;
}

/* Base Typography */
* {
  font-family: "Rubik", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Manrope", "Rubik", sans-serif;
  font-weight: 700;
}

body {
  background: var(--gradient-underwater);
  color: var(--ocean-crystal);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Underwater Parallax Bubbles */
.underwater-bubbles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.bubble {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(
    circle at 30% 30%,
    rgba(79, 195, 247, 0.4) 0%,
    rgba(79, 195, 247, 0.2) 40%,
    rgba(79, 195, 247, 0.1) 70%,
    transparent 100%
  );
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.1),
    0 0 20px rgba(79, 195, 247, 0.2);
  animation: bubbleRise var(--bubble-rise) linear infinite;
  opacity: 0;
}

.bubble::before {
  content: "";
  position: absolute;
  top: 15%;
  left: 20%;
  width: 30%;
  height: 30%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.6) 0%,
    rgba(255, 255, 255, 0.2) 50%,
    transparent 100%
  );
  border-radius: 50%;
  filter: blur(1px);
}

/* Bubble Sizes and Positions */
.bubble:nth-child(1) {
  width: 15px;
  height: 15px;
  left: 10%;
  animation-duration: 4s;
  animation-delay: 0s;
}

.bubble:nth-child(2) {
  width: 25px;
  height: 25px;
  left: 25%;
  animation-duration: 5s;
  animation-delay: 1s;
}

.bubble:nth-child(3) {
  width: 12px;
  height: 12px;
  left: 40%;
  animation-duration: 3.5s;
  animation-delay: 2s;
}

.bubble:nth-child(4) {
  width: 30px;
  height: 30px;
  left: 55%;
  animation-duration: 6s;
  animation-delay: 0.5s;
}

.bubble:nth-child(5) {
  width: 18px;
  height: 18px;
  left: 70%;
  animation-duration: 4.5s;
  animation-delay: 1.5s;
}

.bubble:nth-child(6) {
  width: 22px;
  height: 22px;
  left: 85%;
  animation-duration: 5.5s;
  animation-delay: 3s;
}

.bubble:nth-child(7) {
  width: 14px;
  height: 14px;
  left: 15%;
  animation-duration: 4.2s;
  animation-delay: 2.5s;
}

.bubble:nth-child(8) {
  width: 28px;
  height: 28px;
  left: 35%;
  animation-duration: 5.8s;
  animation-delay: 0.8s;
}

.bubble:nth-child(9) {
  width: 16px;
  height: 16px;
  left: 60%;
  animation-duration: 3.8s;
  animation-delay: 1.8s;
}

.bubble:nth-child(10) {
  width: 20px;
  height: 20px;
  left: 80%;
  animation-duration: 4.8s;
  animation-delay: 2.2s;
}

.bubble:nth-child(11) {
  width: 13px;
  height: 13px;
  left: 5%;
  animation-duration: 4.3s;
  animation-delay: 3.5s;
}

.bubble:nth-child(12) {
  width: 26px;
  height: 26px;
  left: 45%;
  animation-duration: 5.2s;
  animation-delay: 1.2s;
}

.bubble:nth-child(13) {
  width: 17px;
  height: 17px;
  left: 75%;
  animation-duration: 4.7s;
  animation-delay: 2.8s;
}

.bubble:nth-child(14) {
  width: 21px;
  height: 21px;
  left: 90%;
  animation-duration: 5.3s;
  animation-delay: 0.3s;
}

.bubble:nth-child(15) {
  width: 19px;
  height: 19px;
  left: 30%;
  animation-duration: 4.1s;
  animation-delay: 3.2s;
}

/* Bubble Rise Animation */
@keyframes bubbleRise {
  0% {
    bottom: -50px;
    opacity: 0;
    transform: translateX(0) scale(0.8);
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    bottom: 100vh;
    opacity: 0;
    transform: translateX(20px) scale(1.2);
  }
}

/* Hero Section - Ocean Depths */
.hero-section {
  background: var(--gradient-ocean-deep);
  color: var(--pearl-white);
  padding: 8rem 0;
  position: relative;
  overflow: hidden;
  z-index: 2;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 30%,
      rgba(79, 195, 247, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 70%,
      rgba(46, 139, 87, 0.12) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(255, 107, 107, 0.08) 0%,
      transparent 50%
    );
  animation: oceanWaves var(--wave-animation);
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 100px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C300,120 900,0 1200,60 L1200,120 L0,120 Z' fill='%23475569'/%3E%3C/svg%3E")
    no-repeat center bottom;
  background-size: cover;
}

.hero-section .container {
  position: relative;
  z-index: 3;
}

.hero-section h1 {
  font-weight: 800;
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 2rem;
  background: linear-gradient(135deg, #ffffff 0%, #4fc3f7 50%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

.hero-section .lead {
  font-size: 1.4rem;
  font-weight: 400;
  opacity: 0.95;
  max-width: 900px;
  margin: 0 auto 3rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* Modern Ocean Button Styles */
.btn {
  font-family: "Manrope", sans-serif;
  font-weight: 600;
  border-radius: var(--border-radius);
  padding: 1rem 2.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  position: relative;
  text-transform: none;
  letter-spacing: 0.5px;
  z-index: 2;
}

.btn-lg {
  padding: 1.25rem 3rem;
  font-size: 1.2rem;
  border-radius: var(--border-radius-lg);
}

.btn-info {
  background: var(--gradient-wave);
  color: var(--pearl-white);
  box-shadow: var(--shadow-wave);
}

.btn-info:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 195, 247, 0.25);
  color: var(--pearl-white);
}

.btn-outline-light {
  border: 2px solid rgba(255, 255, 255, 0.4);
  color: var(--pearl-white);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: var(--pearl-white);
  transform: translateY(-2px);
  color: var(--pearl-white);
}

.btn-primary {
  background: var(--gradient-ocean-deep);
  box-shadow: var(--shadow-ocean);
  color: var(--pearl-white);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-deep);
  color: var(--pearl-white);
}

/* Ocean Navigation Tabs */
.nav-pills {
  background: rgba(30, 41, 59, 0.9);
  border-radius: var(--border-radius-lg);
  padding: 0.75rem;
  box-shadow: var(--shadow-ocean);
  margin-bottom: 4rem;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(71, 85, 105, 0.5);
  position: relative;
  z-index: 2;
}

.nav-pills .nav-link {
  border-radius: var(--border-radius);
  padding: 1.25rem 2rem;
  margin: 0 0.5rem;
  font-family: "Manrope", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ocean-crystal);
  background: transparent;
  border: none;
  transition: var(--transition-smooth);
  position: relative;
}

.nav-pills .nav-link::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--gradient-wave);
  transform: translateX(-50%);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-pills .nav-link:hover {
  background: rgba(79, 195, 247, 0.15);
  color: var(--pearl-white);
  transform: translateY(-2px);
}

.nav-pills .nav-link:hover::before {
  width: 80%;
}

.nav-pills .nav-link.active {
  background: var(--gradient-wave);
  color: var(--pearl-white);
  box-shadow: var(--shadow-wave);
  transform: translateY(-2px);
}

.nav-pills .nav-link.active::before {
  width: 100%;
  background: rgba(255, 255, 255, 0.3);
}

.nav-pills .nav-link i {
  font-size: 1.2rem;
  margin-right: 0.75rem;
}

/* Section Titles with Ocean Theme */
.section-title {
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  font-size: 3rem;
  color: var(--ocean-crystal);
  margin-bottom: 4rem;
  position: relative;
  text-align: center;
  z-index: 2;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 6px;
  background: var(--gradient-wave);
  border-radius: 3px;
  box-shadow: 0 4px 15px rgba(79, 195, 247, 0.3);
}

.section-title i {
  background: var(--gradient-wave);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-right: 1rem;
}

/* Expert Cards - Ocean Inspired */
.expert-card {
  background: rgba(30, 41, 59, 0.9);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-ocean);
  border: 1px solid rgba(71, 85, 105, 0.6);
  height: auto;
  transition: var(--transition-wave);
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  z-index: 2;
}

.expert-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-wave);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-deep);
  border-color: var(--wave-blue);
  background: rgba(51, 65, 85, 0.95);
}

.expert-card.horizontal {
  display: flex;
  align-items: center;
  text-align: left;
  gap: 2rem;
  padding: 2rem;
}

.expert-photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 2rem;
  position: relative;
  border: 4px solid var(--ocean-surface);
  background: var(--gradient-ocean-surface);
  box-shadow: var(--shadow-ocean);
}

.expert-photo::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-wave);
  border-radius: 50%;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.expert-card:hover .expert-photo::before {
  opacity: 1;
}

.expert-photo.small {
  width: 100px;
  height: 100px;
  margin: 0;
  flex-shrink: 0;
}

.expert-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  filter: brightness(1.05) contrast(1.1);
}

.expert-card:hover .expert-photo img {
  transform: scale(1.08);
}

.expert-badge {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--gradient-coral);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-ocean);
  color: var(--pearl-white);
  font-weight: 700;
  border: 3px solid var(--pearl-white);
}

.expert-content h5,
.expert-content h6 {
  color: var(--ocean-crystal);
  margin-bottom: 0.75rem;
  font-family: "Manrope", sans-serif;
  font-weight: 700;
}

.expert-content h5 {
  font-size: 1.4rem;
  background: linear-gradient(
    135deg,
    var(--ocean-crystal) 0%,
    var(--wave-blue) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.expert-content h6 {
  font-size: 1.2rem;
}

.expert-position {
  color: var(--ocean-foam);
  font-size: 1rem;
  margin-bottom: 0.75rem;
  font-weight: 500;
  font-style: italic;
}

.expert-role {
  color: var(--ocean-mist);
  font-weight: 600;
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

/* Ocean-Themed Badges */
.badge {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius);
  border: none;
  text-transform: none;
  letter-spacing: 0.3px;
}

.badge.bg-primary {
  background: var(--gradient-wave) !important;
  box-shadow: 0 4px 15px rgba(79, 195, 247, 0.3);
}

.badge.bg-success {
  background: var(--gradient-seaweed) !important;
  box-shadow: 0 4px 15px rgba(46, 139, 87, 0.3);
}

.badge.bg-warning {
  background: linear-gradient(
    135deg,
    var(--sunset-orange) 0%,
    #ff7043 100%
  ) !important;
  box-shadow: 0 4px 15px rgba(255, 140, 66, 0.3);
}

.badge.bg-info {
  background: var(--gradient-wave) !important;
  box-shadow: 0 4px 15px rgba(79, 195, 247, 0.3);
}

.badge.bg-dark {
  background: var(--gradient-ocean-deep) !important;
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.3);
}

.badge.bg-secondary {
  background: linear-gradient(
    135deg,
    var(--ocean-surface) 0%,
    var(--ocean-light) 100%
  ) !important;
  box-shadow: 0 4px 15px rgba(100, 116, 139, 0.3);
}

/* Partner Cards - Ocean Style */
.partner-card {
  background: rgba(30, 41, 59, 0.9);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-ocean);
  border: 1px solid rgba(71, 85, 105, 0.6);
  height: 100%;
  transition: var(--transition-wave);
  display: flex;
  align-items: center;
  gap: 2rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  z-index: 2;
}

.partner-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-seaweed);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.partner-card:hover::before {
  transform: scaleX(1);
}

.partner-card.compact {
  flex-direction: column;
  text-align: center;
  padding: 2rem;
}

.partner-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-deep);
  border-color: var(--seaweed-green);
  background: rgba(51, 65, 85, 0.95);
}

.partner-logo {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(226, 232, 240, 0.1);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  transition: var(--transition-smooth);
  border: 2px solid rgba(148, 163, 184, 0.3);
}

.partner-logo.small {
  width: 80px;
  height: 80px;
  padding: 1rem;
}

.partner-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(30%) brightness(1.3);
  transition: filter 0.4s ease;
}

.partner-card:hover .partner-logo {
  background: rgba(79, 195, 247, 0.15);
  border-color: var(--wave-blue);
}

.partner-card:hover .partner-logo img {
  filter: grayscale(0%) brightness(1.4);
}

.partner-content h5,
.partner-content h6 {
  color: var(--ocean-crystal);
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.partner-content h5 {
  font-size: 1.3rem;
}

.partner-content h6 {
  font-size: 1.1rem;
}

.partner-content p {
  color: var(--ocean-foam);
  font-size: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.partner-role .badge {
  background: rgba(148, 163, 184, 0.2) !important;
  color: var(--ocean-crystal) !important;
  font-weight: 600;
}

.partner-logo-only {
  text-align: center;
  padding: 2rem;
  background: rgba(30, 41, 59, 0.9);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-ocean);
  transition: var(--transition-wave);
  height: 100%;
  border: 1px solid rgba(71, 85, 105, 0.6);
  backdrop-filter: blur(20px);
  z-index: 2;
  position: relative;
}

.partner-logo-only:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-deep);
  border-color: var(--wave-blue);
  background: rgba(51, 65, 85, 0.95);
}

.partner-logo-only img {
  max-width: 100px;
  max-height: 80px;
  object-fit: contain;
  filter: grayscale(40%) brightness(1.3);
  transition: filter 0.4s ease;
}

.partner-logo-only:hover img {
  filter: grayscale(0%) brightness(1.5);
}

.partner-logo-only h6 {
  font-size: 0.95rem;
  color: var(--ocean-crystal);
  margin-bottom: 0;
  font-weight: 600;
  margin-top: 1.5rem;
  font-family: "Manrope", sans-serif;
}

/* Organizer Cards - Ocean Depths */
.organizer-card {
  background: rgba(30, 41, 59, 0.9);
  border-radius: var(--border-radius-lg);
  padding: 4rem;
  box-shadow: var(--shadow-deep);
  border: 1px solid rgba(71, 85, 105, 0.6);
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  z-index: 2;
}

.main-organizer {
  background: linear-gradient(
    135deg,
    rgba(30, 41, 59, 0.95) 0%,
    rgba(51, 65, 85, 0.9) 100%
  );
  border: 3px solid var(--wave-blue);
  position: relative;
}

.main-organizer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--gradient-wave);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.organizer-logo {
  width: 160px;
  height: 160px;
  margin: 0 auto 2.5rem;
  background: rgba(254, 254, 254, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-deep);
  padding: 2rem;
  border: 6px solid rgba(148, 163, 184, 0.3);
  position: relative;
}

.organizer-logo::before {
  content: "";
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: var(--gradient-wave);
  border-radius: 50%;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.main-organizer:hover .organizer-logo::before {
  opacity: 1;
}

.organizer-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: brightness(1.3);
}

.organizer-content h3 {
  color: var(--ocean-crystal);
  margin-bottom: 1.5rem;
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  font-size: 2rem;
  background: linear-gradient(
    135deg,
    var(--ocean-crystal) 0%,
    var(--wave-blue) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.organizer-content .lead {
  color: var(--wave-blue);
  font-weight: 600;
  margin-bottom: 2rem;
  font-size: 1.2rem;
}

.organizer-stats {
  margin: 2.5rem 0;
  padding: 2.5rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(71, 85, 105, 0.5);
}

.stat-item h4 {
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--wave-blue);
  font-size: 2.5rem;
  background: var(--gradient-wave);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item p {
  color: var(--ocean-foam);
  font-weight: 500;
  margin: 0;
  font-size: 1.05rem;
}

/* Track Sections - Ocean Themed */
.track-experts {
  background: rgba(30, 41, 59, 0.9);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-ocean);
  border-left: 6px solid var(--wave-blue);
  margin-bottom: 2.5rem;
  position: relative;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(71, 85, 105, 0.6);
  z-index: 2;
}

.track-title {
  color: var(--ocean-crystal);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 3px solid rgba(148, 163, 184, 0.3);
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
}

.track-title i {
  background: var(--gradient-wave);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-right: 1rem;
}

/* Partner Categories */
.partner-category {
  margin-bottom: 4rem;
}

.category-title {
  margin-bottom: 2.5rem;
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  color: var(--ocean-crystal);
  font-size: 1.4rem;
}

.category-title .badge {
  font-size: 1rem;
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
}

/* Expert CTA - Ocean Call to Action */
.expert-cta .card {
  background: linear-gradient(
    135deg,
    rgba(30, 41, 59, 0.95) 0%,
    rgba(51, 65, 85, 0.9) 100%
  );
  border: 2px solid rgba(71, 85, 105, 0.6);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-deep);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  z-index: 2;
}

.expert-cta .card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--gradient-wave);
}

.expert-cta .card-title {
  color: var(--ocean-crystal);
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.expert-cta .card-text {
  color: var(--ocean-foam);
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

/* Ocean Animations */
@keyframes oceanWaves {
  0%,
  100% {
    transform: translateX(0) translateY(0);
  }
  25% {
    transform: translateX(-5px) translateY(-2px);
  }
  50% {
    transform: translateX(0) translateY(-4px);
  }
  75% {
    transform: translateX(5px) translateY(-2px);
  }
}

@keyframes bubbleFloat {
  0%,
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.7;
  }
  50% {
    transform: translateY(-20px) scale(1.1);
    opacity: 1;
  }
}

@keyframes seaweedSway {
  0%,
  100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

/* Responsive Design - Ocean Adaptive */
@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.8rem;
  }

  .hero-section {
    padding: 5rem 0;
  }

  .expert-card.horizontal {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .expert-photo.small {
    margin: 0 auto 1.5rem;
  }

  .partner-card {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .organizer-card {
    padding: 2.5rem 1.5rem;
  }

  .track-experts {
    padding: 2rem;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .nav-pills {
    padding: 0.5rem;
  }

  .nav-pills .nav-link {
    padding: 1rem 1.5rem;
    font-size: 0.9rem;
  }

  /* Reduce bubble count on mobile */
  .bubble:nth-child(n + 8) {
    display: none;
  }
}

@media (max-width: 576px) {
  .hero-section h1 {
    font-size: 2.2rem;
  }

  .nav-pills .nav-link i {
    display: none;
  }

  .expert-card {
    padding: 2rem;
  }

  .partner-logo-only {
    padding: 1.5rem;
  }

  .organizer-stats .row {
    text-align: center;
  }

  .stat-item {
    margin-bottom: 1.5rem;
  }

  .btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .expert-cta .card {
    padding: 2rem;
  }

  /* Further reduce bubbles on small screens */
  .bubble:nth-child(n + 6) {
    display: none;
  }
}

/* Animation Classes */
.fade-in-ocean {
  animation: fadeInOcean 0.8s ease-out;
}

@keyframes fadeInOcean {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Smooth Ocean Transitions */
* {
  scroll-behavior: smooth;
}

/* Focus States for Ocean Accessibility */
.btn:focus,
.nav-link:focus {
  outline: 3px solid var(--wave-blue);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(79, 195, 247, 0.2);
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
  filter: blur(1px);
}

/* Hover Effects for Interactive Ocean Elements */
.expert-card,
.partner-card,
.partner-logo-only,
.organizer-card {
  cursor: pointer;
}

/* Custom Ocean Scrollbar */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--ocean-blue);
  border-radius: 6px;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-wave);
  border-radius: 6px;
  border: 2px solid var(--ocean-blue);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gradient-ocean-deep);
}

/* Ocean Floating Elements */
.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
}

.floating-bubble {
  position: absolute;
  background: radial-gradient(
    circle,
    rgba(79, 195, 247, 0.1) 0%,
    rgba(79, 195, 247, 0.05) 70%,
    transparent 100%
  );
  border-radius: 50%;
  animation: bubbleFloat var(--bubble-float);
}

.floating-bubble:nth-child(1) {
  width: 60px;
  height: 60px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.floating-bubble:nth-child(2) {
  width: 40px;
  height: 40px;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.floating-bubble:nth-child(3) {
  width: 80px;
  height: 80px;
  bottom: 30%;
  left: 20%;
  animation-delay: 4s;
}

.floating-bubble:nth-child(4) {
  width: 50px;
  height: 50px;
  top: 40%;
  right: 30%;
  animation-delay: 6s;
}

/* Additional z-index fixes for proper layering */
.container-fluid,
.container {
  position: relative;
  z-index: 2;
}

/* Enhanced underwater atmosphere */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    rgba(79, 195, 247, 0.03) 0%,
    rgba(15, 23, 42, 0.05) 100%
  );
  pointer-events: none;
  z-index: 0;
}

.text-muted {
  color: var(--ocean-crystal) !important;
}

.notification-setting {
  padding: 1rem;
  border-radius: var(--border-radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(79, 195, 247, 0.2);
  transition: var(--transition-smooth);
}

.notification-setting:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--ocean-blue);
  transform: translateY(-2px);
}

.form-check-input:checked {
  background-color: var(--ocean-blue);
  border-color: var(--ocean-blue);
}

.form-check-input:focus {
  border-color: var(--ocean-light);
  box-shadow: 0 0 0 0.25rem rgba(79, 195, 247, 0.25);
}

.preview-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(79, 195, 247, 0.3);
  border-radius: var(--border-radius);
  padding: 1rem;
  transition: var(--transition-smooth);
}

.preview-card:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--ocean-blue);
}

.preview-header {
  color: var(--ocean-blue);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.preview-body p {
  margin-bottom: 0.25rem;
  color: var(--ocean-clear);
}

.notification-stats {
  background: rgba(40, 167, 69, 0.1);
  border: 1px solid rgba(40, 167, 69, 0.3);
  border-radius: var(--border-radius);
  padding: 0.75rem;
}

.stat-item {
  align-items: center;
  color: var(--ocean-clear);
}

.notification-actions {
  border-top: 1px solid rgba(79, 195, 247, 0.2);
  padding-top: 1rem;
}

.notification-info {
  color: var(--ocean-crystal);
}

/* Responsive для настроек уведомлений */
@media (max-width: 768px) {
  .notification-actions .d-flex {
    flex-direction: column;
    gap: 1rem;
  }

  .action-buttons {
    display: flex;
    gap: 0.5rem;
    width: 100%;
  }

  .action-buttons .btn {
    flex: 1;
  }
}