/* ════════════════════════════════════════════════════════
   EMBATCON 2026 — styles.css
   ════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ─────────────────────────────────────── */
:root {
  --black: #050A0E;
  --deep: #0A1520;
  --teal: #00C2A8;
  --teal-d: #009E88;
  --amber: #F5A623;
  --amber-d: #C47D0A;
  --white: #EDF4F2;
  --grey: #8BA3A0;
  --line: rgba(0, 194, 168, .18);
  --card-bg: rgba(10, 21, 32, .85);

  --font-head: 'Bebas Neue', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'DM Sans', sans-serif;

  --gutter: clamp(1.5rem, 5vw, 5rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* ── SCROLLBAR ──────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: var(--deep);
}

::-webkit-scrollbar-thumb {
  background: var(--teal);
  border-radius: 2px;
}

/* ── GRID OVERLAY ───────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ════════════════════════════════════════════════════════
   HEADER / NAVIGATION
   ════════════════════════════════════════════════════════ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  height: 68px;
  background: rgba(5, 10, 14, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s;
}

header.scrolled {
  box-shadow: 0 2px 40px rgba(0, 194, 168, .15);
}

.logo img {
  height: 42px;
  width: auto;
  display: block;
}

nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

nav a {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .1em;
  color: var(--grey);
  text-transform: uppercase;
  transition: color .2s;
  position: relative;
}

nav a:hover,
nav a.active {
  color: var(--teal);
}

/* ── DROPDOWN ───────────────────────────────────────────── */
.nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.dropdown-trigger {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--grey);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0;
  transition: color 0.2s;
}

.dropdown-trigger:hover,
.dropdown-trigger.active {
  color: var(--teal);
}

.chevron {
  font-size: 0.7em;
  transition: transform 0.3s ease;
}

.dropdown-trigger.active .chevron {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--deep);
  border: 1px solid var(--line);
  border-top: 2px solid var(--teal);
  border-radius: 0 0 4px 4px;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  list-style: none;
  padding: 0.5rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu li a {
  display: block;
  padding: 0.8rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--grey);
  transition: all 0.2s;
  border: none;
}

.dropdown-menu li a::after {
  display: none;
}

.dropdown-menu li a:hover {
  color: var(--teal);
  background: rgba(0, 194, 168, 0.05);
  padding-left: 1.8rem;
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .5rem 1.2rem;
  border: 1px solid var(--amber);
  color: var(--amber);
  border-radius: 2px;
  transition: background .2s, color .2s;
}

.nav-cta:hover {
  background: var(--amber);
  color: var(--black);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--teal);
  transition: all .3s;
}

/* ── MOBILE NAV ─────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: rgba(5, 10, 14, .98);
  backdrop-filter: blur(14px);
  padding: 2rem var(--gutter);
  flex-direction: column;
  gap: 1.4rem;
  z-index: 99;
  border-bottom: 1px solid var(--line);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--grey);
  transition: color .2s;
}

.mobile-nav a:hover {
  color: var(--teal);
}

/* ════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(68px + 4rem) var(--gutter) 4rem;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.hero-bg-slider {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-bg-slider img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease-in-out, transform 8s linear;
  transform: scale(1.05);
}

.hero-bg-slider img.active {
  opacity: 0.5;
  transform: scale(1.15);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 10, 14, 0.4);
  z-index: -1;
}

#hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 194, 168, .12) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .22em;
  color: var(--teal);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: .8rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-kicker::before {
  content: '';
  display: block;
  width: 36px;
  height: 1px;
  background: var(--teal);
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(3.2rem, 8vw, 7rem);
  line-height: .95;
  letter-spacing: .03em;
  color: var(--white);
  max-width: 14ch;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

.hero-title em {
  color: var(--teal);
  font-style: normal;
}

.hero-title .accent {
  color: var(--amber);
}

.hero-sub {
  margin-top: 1.8rem;
  font-size: 1.3rem;
  color: var(--grey);
  max-width: 55ch;
  font-weight: 400;
}

.hero-meta {
  margin-top: 2.4rem;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-meta-item {
  border-left: 2px solid var(--teal);
  padding-left: .9rem;
}

.hero-meta-item .label {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--grey);
}

.hero-meta-item .value {
  font-family: var(--font-head);
  font-size: 1.25rem;
  letter-spacing: .05em;
  color: var(--white);
}

.hero-actions {
  margin-top: 3rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── SHARED BUTTONS ─────────────────────────────────────── */
.btn-primary {
  font-family: var(--font-mono);
  font-size: .88rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .85rem 2rem;
  background: var(--teal);
  color: var(--black);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  font-weight: 700;
  transition: background .2s, transform .15s;
}

.btn-primary:hover {
  background: var(--teal-d);
  transform: translateY(-2px);
}

.btn-secondary {
  font-family: var(--font-mono);
  font-size: .88rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .85rem 2rem;
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color .2s, color .2s;
}

.btn-secondary:hover {
  border-color: var(--teal);
  color: var(--teal);
}

/* ════════════════════════════════════════════════════════
   COUNTDOWN BAR
   ════════════════════════════════════════════════════════ */
#countdown-bar {
  background: var(--deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 2.4rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.countdown-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--teal);
  margin-right: 1rem;
}

.cd-unit {
  text-align: center;
  min-width: 70px;
}

.cd-num {
  font-family: var(--font-head);
  font-size: 3rem;
  line-height: 1;
  color: var(--white);
}

.cd-lbl {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--grey);
  margin-top: .25rem;
}

.cd-sep {
  font-family: var(--font-head);
  font-size: 2.5rem;
  color: var(--teal);
  opacity: .5;
  padding-bottom: .4rem;
}

/* ════════════════════════════════════════════════════════
   SHARED SECTION STYLES
   ════════════════════════════════════════════════════════ */
section {
  position: relative;
  z-index: 1;
}

.section-inner {
  padding: 6rem var(--gutter);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: .8rem;
  display: flex;
  align-items: center;
  gap: .7rem;
}

.section-tag::before {
  content: '//';
  color: var(--amber);
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.05;
  letter-spacing: .04em;
  margin-bottom: 1.6rem;
}

.section-title em {
  color: var(--teal);
  font-style: normal;
}

/* ════════════════════════════════════════════════════════
   MISSION SECTION
   ════════════════════════════════════════════════════════ */
#mission {
  background: var(--deep);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.mission-text p {
  color: var(--grey);
  margin-bottom: 1.2rem;
  font-size: 1.15rem;
}

.mission-text p strong {
  color: var(--white);
  font-weight: 500;
}

.mission-stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-top: 2px solid var(--teal);
  padding: 1.4rem;
  border-radius: 3px;
}

.stat-card .num {
  font-family: var(--font-head);
  font-size: 2.8rem;
  color: var(--teal);
  line-height: 1;
}

.stat-card .desc {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--grey);
  margin-top: .4rem;
}

/* ── Battery / Orbit Visual ─────────────────────────────── */
.flyer-img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 40px rgba(0, 194, 168, .15);
}

/* ════════════════════════════════════════════════════════
   PARTNERS SECTION
   ════════════════════════════════════════════════════════ */
#partners-featured {
  background: var(--black);
  border-top: 1px solid var(--line);
}

.partners-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.partner-logo img {
  height: 50px;
  width: auto;
  filter: grayscale(1) brightness(0.8) invert(1);
  opacity: 0.6;
  transition: all .4s ease;
}

.partner-logo img:hover {
  filter: grayscale(0) brightness(1) invert(0);
  opacity: 1;
  transform: scale(1.05);
}

/* ════════════════════════════════════════════════════════
   SCHEDULE SECTION
   ════════════════════════════════════════════════════════ */
#schedule {
  background: var(--black);
}

.schedule-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.day-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color .25s, transform .25s;
}

.day-card:hover {
  border-color: var(--teal);
  transform: translateY(-6px);
}

.day-header {
  padding: 1.4rem 1.6rem;
  background: rgba(0, 194, 168, .08);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: .8rem;
}

.day-num {
  font-family: var(--font-head);
  font-size: 3rem;
  color: var(--teal);
  line-height: 1;
}

.day-info .date {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--amber);
}

.day-info .title {
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--white);
  margin-top: .1rem;
}

.day-body {
  padding: 1.6rem;
}

.day-body p {
  font-size: .9rem;
  color: var(--grey);
}

.day-sessions {
  margin-top: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.session-chip {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .35rem .7rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--grey);
}

/* ════════════════════════════════════════════════════════
   SPEAKERS SECTION
   ════════════════════════════════════════════════════════ */
#speakers {
  background: var(--deep);
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.speaker-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2rem 1.6rem;
  text-align: center;
  transition: border-color .25s;
}

.speaker-card:hover {
  border-color: var(--amber);
}

.speaker-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 2px solid var(--teal);
  margin: 0 auto 1rem;
  overflow: hidden;
  background: rgba(0, 194, 168, .1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 2rem;
  color: var(--teal);
}

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

/* ── BREADCRUMB ─────────────────────────────────────────── */
.breadcrumb {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.breadcrumb__slash {
  color: var(--amber);
  font-weight: bold;
}

.breadcrumb__link {
  color: var(--grey);
  transition: color 0.2s;
}

.breadcrumb__link:hover {
  color: var(--teal);
}

.breadcrumb__sep {
  color: rgba(255, 255, 255, 0.2);
}

.breadcrumb__current {
  color: var(--white);
  opacity: 0.8;
}

.speaker-name {
  font-family: var(--font-head);
  font-size: 1.2rem;
  letter-spacing: .04em;
  color: var(--white);
}

.speaker-role {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-top: .3rem;
}

.speaker-affil {
  font-size: .82rem;
  color: var(--grey);
  margin-top: .5rem;
}

/* ════════════════════════════════════════════════════════
   VENUE SECTION
   ════════════════════════════════════════════════════════ */
#venue {
  background: var(--black);
}

.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.venue-text p {
  color: var(--grey);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.venue-highlights {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .8rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--grey);
}

.highlight-item::before {
  content: '→';
  color: var(--teal);
  font-size: .9rem;
}


.venue-img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--line);
}

/* ════════════════════════════════════════════════════════
   MAP SECTION
   ════════════════════════════════════════════════════════ */
#location-map {
  background: var(--black);
  padding: 0;
  border-top: 1px solid var(--line);
}

.map-full {
  height: 500px;
  width: 100%;
  filter: grayscale(80%) invert(85%) hue-rotate(180deg);
}

.map-full iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ════════════════════════════════════════════════════════
   CALL FOR PAPERS SECTION
   ════════════════════════════════════════════════════════ */
#papers {
  background: var(--deep);
  border-top: 1px solid var(--line);
}

.papers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.papers-text {
  max-width: 55ch;
}

.papers-text p {
  color: var(--grey);
  font-size: .95rem;
  margin-top: .8rem;
}

.papers-actions {
  margin-top: 2rem;
}

.papers-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.papers-flyer-img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 40px rgba(0, 194, 168, .15);
  transition: transform .4s ease, box-shadow .4s ease;
}

.papers-flyer-img:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 50px rgba(0, 194, 168, .25);
}

/* ════════════════════════════════════════════════════════
   ORGANIZERS SECTION
   ════════════════════════════════════════════════════════ */
#organizers {
  background: var(--black);
}

.org-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.org-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.4rem 1rem;
  text-align: center;
  transition: border-color .2s;
}

.org-card:hover {
  border-color: var(--teal);
}

.org-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid var(--teal);
  background: rgba(0, 194, 168, .08);
  margin: 0 auto .8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 1.4rem;
  color: var(--teal);
  overflow: hidden;
}

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

.org-name {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--white);
  letter-spacing: .04em;
}

.org-role {
  font-size: .8rem;
  color: var(--grey);
  margin-top: .2rem;
}

/* ════════════════════════════════════════════════════════
   REGISTER SECTION
   ════════════════════════════════════════════════════════ */
#register {
  background: linear-gradient(135deg, rgba(0, 194, 168, .1) 0%, rgba(245, 166, 35, .06) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.register-inner {
  text-align: center;
  padding: 6rem var(--gutter);
}

.register-inner .section-tag {
  justify-content: center;
}

.register-inner .section-title {
  margin-bottom: .8rem;
}

.register-inner p {
  color: var(--grey);
  max-width: 55ch;
  margin: 0 auto 2.5rem;
  font-size: 1rem;
}

/* ════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════ */
footer {
  background: var(--deep);
  border-top: 1px solid var(--line);
  padding: 4rem var(--gutter) 2rem;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: .85rem;
  color: var(--grey);
  max-width: 30ch;
  line-height: 1.6;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1.2rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.footer-col ul li a {
  font-size: .85rem;
  color: var(--grey);
  transition: color .2s;
}

.footer-col ul li a:hover {
  color: var(--white);
}

.footer-divider {
  border: none;
  border-top: 1px solid var(--line);
  margin-bottom: 1.6rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--grey);
}

.footer-bottom p span {
  color: var(--teal);
}

.partners {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.partner-tag {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .1em;
  color: var(--grey);
  border: 1px solid var(--line);
  padding: .3rem .6rem;
  border-radius: 2px;
}

/* ════════════════════════════════════════════════════════
   ANIMATIONS
   ════════════════════════════════════════════════════════ */
@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: .4;
    transform: scale(1.4);
  }
}

@keyframes charge {
  0% {
    height: 15%;
    opacity: .7;
  }

  100% {
    height: 85%;
    opacity: 1;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── Scroll Reveal ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 {
  transition-delay: .1s;
}

.reveal-delay-2 {
  transition-delay: .2s;
}

.reveal-delay-3 {
  transition-delay: .3s;
}

/* ════════════════════════════════════════════════════════
   RESPONSIVE — TABLET ( ≤ 900px )
   ════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mission-grid,
  .venue-grid,
  .papers-grid {
    grid-template-columns: 1fr;
  }

  .speakers-grid,
  .schedule-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

  /* .mission-visual {
    height: 220px;
  } */

  .orbit {
    width: 220px;
    height: 220px;
  }
}

/* ════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE ( ≤ 600px )
   ════════════════════════════════════════════════════════ */
@media (max-width: 600px) {

  .speakers-grid,
  .schedule-grid {
    grid-template-columns: 1fr;
  }

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

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

  .hero-title {
    font-size: 5rem;
  }

  .papers-inner {
    flex-direction: column;
  }

  .papers-grid {
    gap: 2rem;
  }

  .mission-stat-row {
    grid-template-columns: 1fr;
  }

  .venue-highlights {
    grid-template-columns: 1fr;
  }
}

/* ══ FORM RESPONSIVENESS & STYLING ═════════════════════════ */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-row.mb-large {
  margin-bottom: 2.5rem;
}

/* Form Input Enhancements */
.embatcon-form input:not([type="radio"]):not([type="checkbox"]),
.embatcon-form select,
.embatcon-form textarea {
  background-color: #1a1a1a !important;
  border: 1px solid #444 !important;
  color: #fff !important;
  border-radius: 6px !important;
  padding: 1rem !important;
  font-size: 1rem !important;
  width: 100% !important;
  transition: all 0.3s ease;
}

.embatcon-form input[type="radio"],
.embatcon-form input[type="checkbox"] {
  width: auto !important;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.embatcon-form label:has(input[type="radio"]),
.embatcon-form label:has(input[type="checkbox"]) {
  display: flex;
  align-items: center;
}

.embatcon-form input:focus,
.embatcon-form select:focus,
.embatcon-form textarea:focus {
  outline: none;
  border-color: var(--teal) !important;
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
  background-color: #222 !important;
}