* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: #1f1b3a;
  color: #fff;
}

/* ================= NAVBAR ================= */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 8%;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 999;
   background: #2a2550;
  box-shadow:0 5px 20px rgba(0,0,0,.3);
}

.logo {
  font-size: 22px;
  font-weight: 700;
}

.logo span {
  color: orange;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  text-decoration: none;
  color: #fff;
  font-size: 14px;
}
/* NAV LINK */
.nav-links a {
  position: relative;
  text-decoration: none;
  color: #fff;
  font-size: 14px;
  padding: 5px 0;
}

/* GARIS BAWAH (AWALNYA HILANG) */
.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: #ff5a1f;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

/* SAAT HOVER */
.nav-links a:hover::after {
  width: 100%;
}

.btn-register {
  background: #ff5a1f;
  padding: 10px 18px;
  border-radius: 5px;
  color: #fff;
  text-decoration: none;
}

/* MOBILE MENU */
.menu-toggle {
  display: none;
  font-size: 24px;
  cursor: pointer;
}

/* ================= HERO ================= */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 8%;
  background: linear-gradient(rgba(31,27,58,0.9), rgba(31,27,58,0.9)),
              url('https://images.unsplash.com/photo-1540575467063-178a50c2df87');
  background-size: cover;
  background-position: center;
}

.hero-content {
  display: flex;
  justify-content: space-between;
  width: 100%;
  gap: 50px;
}

/* LEFT */
.hero-left h1 {
  font-size: 120px;
  line-height: 1.2;
}

.hero-left h1 span {
  color: orange;
  display: block;
}

.hero-left p {
  margin: 20px 0;
  max-width: 500px;
  font-size: 14px;
}

.hero-left a {
  color: #fff;
  text-decoration: underline;
}

/* RIGHT */
.hero-right {
  max-width: 400px;
}

.hero-right h2 {
  font-size: 28px;
}

.hero-right p {
  font-size: 14px;
  margin-top: 10px;
}

/* SPEAKERS */
.speakers {
  margin-top: 30px;
}

.speaker-list {
  display: flex;
  gap: 15px;
  margin-top: 10px;
}

.speaker {
  text-align: center;
}

.speaker img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
}

/* ================= RESPONSIVE ================= */
@media(max-width: 900px) {
  .hero-content {
    flex-direction: column;
  }

  .hero-left h1 {
    font-size: 40px;
  }
}

/* ================= ABOUT ================= */
.about {
  background: #f5f5f7;
  padding: 80px 8%;
}

.about-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

/* LEFT VISUAL */
.about-left {
  flex: 1;
  display: flex;
  justify-content: center;
}

.circle {
  width: 250px;
  height: 250px;
  background: #ffe55c;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.circle::after {
  content: "";
  position: absolute;
  width: 270px;
  height: 270px;
  border: 6px solid #ff5a1f;
  border-radius: 50%;
  top: -10px;
  left: -10px;
}

.icon {
  font-size: 80px;
  color: #ff5a1f;
}

/* RIGHT CONTENT */
.about-right {
  flex: 1;
}

.about-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: #999;
  margin-bottom: 10px;
}

.about-right h2 {
  font-size: 36px;
  color: #2a2550;
  margin-bottom: 20px;
}

.about-right ul {
  list-style: none;
}

.about-right li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 15px;
  color: #555;
  font-size: 14px;
  line-height: 1.6;
}

.about-right li::before {
  content: "○";
  position: absolute;
  left: 0;
  color: #ff5a1f;
}

/* ================= SPEAKERS ================= */
.speakers-section {
  background: linear-gradient(135deg, #2a2550, #3b2f73);
  color: #fff;
  padding: 80px 8%;
  position: relative;
  overflow: hidden;
}

.speakers-header {
  margin-bottom: 50px;
}

.label {
  background: #ff5a1f;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  display: inline-block;
  margin-bottom: 15px;
}

.header-content {
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.header-content h2 {
  font-size: 36px;
}

.header-content p {
  max-width: 400px;
  font-size: 14px;
  line-height: 1.6;
  color: #ddd;
}

/* GRID */
.speaker-grid {
  display: grid;
  grid-template-columns: repeat(3, 2fr);
  gap: 40px;
  margin-top: 40px;
}

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

.speaker-card img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 5px solid rgba(255,255,255,0.1);
}

.speaker-card h4 {
  margin-top: 15px;
  font-size: 16px;
}

.speaker-card p {
  font-size: 13px;
  color: #ccc;
}

/* MODERATOR */
.moderator {
  margin-top: 70px;
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
}

.moderator img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
}

.moderator h3 {
  color: #ff5a1f;
}

/* ================= RESPONSIVE ================= */
@media(max-width: 992px) {
  .speaker-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .header-content {
    flex-direction: column;
  }
}

@media(max-width: 600px) {
  .speaker-grid {
    grid-template-columns: 1fr;
  }

  .header-content h2 {
    font-size: 28px;
  }

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

/* ================= PRICING ================= */
.pricing {
  background: #f5f5f7;
  padding: 80px 8%;
}

.pricing-header {
  text-align: center;
  margin-bottom: 50px;
}

.pricing-header h2 {
  font-size: 32px;
  color: #2a2550;
}

.pricing-header p {
  color: #777;
  margin-top: 10px;
}

/* CARD */
.pricing-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr;
  gap: 20px;
  background: #fff;
  padding: 30px;
  border-radius: 10px;
  margin-bottom: 20px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
  align-items: center;
}

/* LEFT */
.pricing-left h3 {
  color: #2a2550;
  margin-bottom: 10px;
}

.pricing-left p {
  font-size: 14px;
  color: #555;
}

.pricing-left small {
  color: #999;
}

/* FEATURES */
.pricing-middle ul {
  list-style: none;
}

.pricing-middle li {
  font-size: 14px;
  margin-bottom: 8px;
  color: #444;
}

/* DISABLED ITEM (abu seperti desain) */
.pricing-middle .disabled {
  color: #bbb;
}

/* RIGHT */
.pricing-right {
  text-align: center;
}

.pricing-right h2 {
  color: #2a2550;
  font-size: 32px;
}

.pricing-right p {
  font-size: 12px;
  color: #777;
}

.pricing-right a {
  display: inline-block;
  margin-top: 10px;
  background: #ff5a1f;
  color: #fff;
  padding: 10px 18px;
  border-radius: 5px;
  text-decoration: none;
}

/* ================= RESPONSIVE ================= */
@media(max-width: 992px) {
  .pricing-card {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-right {
    grid-column: span 2;
    margin-top: 10px;
  }
}

@media(max-width: 600px) {
  .pricing-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ================= CALL FOR PAPER ================= */
.cfp {
  background: #f5f5f7;
  padding: 80px 8%;
}

/* HEADER */
.cfp-header {
  text-align: center;
  max-width: 700px;
  margin: auto;
  margin-bottom: 40px;
}

.cfp-label {
  background: #2a2550;
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  display: inline-block;
  margin-bottom: 10px;
}

.cfp-header h2 {
  font-size: 32px;
  color: #2a2550;
}

.cfp-header p {
  color: #666;
  font-size: 14px;
  margin-top: 10px;
}

/* THEME */
.cfp-theme {
  background: linear-gradient(135deg, #2a2550, #4b3fa3);
  color: #fff;
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  margin-bottom: 40px;
}

.cfp-theme small {
  opacity: 0.8;
}

.cfp-theme h3 {
  margin-top: 10px;
  font-size: 20px;
}

/* GRID */
.cfp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

/* CARD */
.cfp-card {
  background: #fff;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.cfp-sub {
  font-size: 12px;
  color: #999;
}

.cfp-card h4 {
  margin: 10px 0 20px;
  color: #2a2550;
}

.cfp-card ul {
  list-style: none;
}

.cfp-card li {
  margin-bottom: 10px;
  font-size: 14px;
  color: #444;
  position: relative;
  padding-left: 20px;
}

/* ICON CHECK */
.cfp-card li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: #ff5a1f;
  font-size: 12px;
}

/* RESPONSIVE */
@media(max-width: 768px) {
  .cfp-grid {
    grid-template-columns: 1fr;
  }

  .cfp-theme h3 {
    font-size: 18px;
  }
}

/* ================= CTA ================= */
.cta {
  background: linear-gradient(rgba(42,37,80,0.9), rgba(42,37,80,0.9)),
              url('https://images.unsplash.com/photo-1519389950473-47ba0277781c');
  background-size: cover;
  background-position: center;
  padding: 80px 8%;
  text-align: center;
  color: #fff;
}

.cta-container {
  max-width: 700px;
  margin: auto;
}

.cta h2 {
  font-size: 36px;
  margin-bottom: 15px;
}

.cta p {
  font-size: 15px;
  color: #ddd;
  margin-bottom: 25px;
  line-height: 1.6;
}

/* BUTTONS */
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.btn-primary {
  background: #ff5a1f;
  color: #fff;
  padding: 12px 25px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

.btn-secondary {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
  padding: 12px 25px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

/* HOVER EFFECT */
.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary:hover {
  background: #fff;
  color: #2a2550;
}

/* RESPONSIVE */
@media(max-width: 600px) {
  .cta h2 {
    font-size: 28px;
  }
}

/* ================= FOOTER ================= */
.footer {
  background: #2a2550;
  color: #fff;
  padding-top: 60px;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  padding: 0 8%;
}

/* COL */
.footer-col h3,
.footer-col h4 {
  margin-bottom: 15px;
}

.footer-col p {
  font-size: 14px;
  color: #ccc;
  line-height: 1.6;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
  font-size: 14px;
  color: #ccc;
}

.footer-col a {
  text-decoration: none;
  color: #ccc;
}

.footer-col a:hover {
  color: #ff5a1f;
}

/* SOCIAL */
.socials a {
  display: inline-block;
  margin-right: 10px;
  font-size: 18px;
}

/* BOTTOM */
.footer-bottom {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  color: #aaa;
}

/* RESPONSIVE */
@media(max-width: 900px) {
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media(max-width: 600px) {
  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ================= RESPONSIVE ================= */
@media(max-width: 900px) {
  .about-container {
    flex-direction: column;
    text-align: center;
  }

  .about-right h2 {
    font-size: 28px;
  }

  .about-right li {
    padding-left: 0;
  }

  .about-right li::before {
    display: none;
  }
}

/* MOBILE */
@media(max-width: 768px) {

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 70px;
    right: 0;
    background: #2a2550;
    width: 200px;
    flex-direction: column;
    align-items: center;
    display: none;
    padding: 20px 0;
  }

  .nav-links.active {
    display: flex;
  }
}

/* ================= FADE ANIMATION ================= */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}

.fade-in.show {
  opacity: 1;
  transform: translateY(0);
}

/* ================= BACK TO TOP ================= */
#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #ff5a1f;
  color: #fff;
  border: none;
  padding: 12px 15px;
  font-size: 18px;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  z-index: 999;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

#backToTop:hover {
  opacity: 0.8;
}

/* ================= COUNTDOWN ================= */
.countdown {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.time-box {
  background: rgba(255,255,255,0.1);
  padding: 10px 15px;
  border-radius: 8px;
  text-align: center;
  min-width: 60px;
}

.time-box span {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: #ff5a1f;
}

.time-box small {
  font-size: 11px;
  color: #ccc;
}

/* MOBILE */
@media(max-width: 600px) {
  .countdown {
    justify-content: center;
  }
}

/*DAFTAR KE WA*/

.btn {
  background:#ff5722; color:#fff; padding:10px 20px;
  border:none; border-radius:6px; cursor:pointer;
}
.btn:hover { background:#e64a19; }
#topBtn {
  position:fixed; bottom:30px; right:30px;
  display:none; padding:10px; border:none;
  background:#1a237e; color:#fff; border-radius:50%;
}
.modal {
  display:none; position:fixed; top:0; left:0; width:100%; height:100%;
  background:rgba(0,0,0,0.5); justify-content:center; align-items:center;
}
.modal-content {
  background:#fff; padding:30px; border-radius:20px;
}

/* ================= REGISTRATION GOOGLE FORM================= */
.registration {
  background: #f5f5f7;
  padding: 80px 8%;
  text-align: center;
}

.reg-header {
  max-width: 600px;
  margin: auto;
  margin-bottom: 30px;
}

.reg-header h2 {
  font-size: 32px;
  color: #2a2550;
}

.reg-header p {
  color: #666;
  font-size: 14px;
  margin-top: 10px;
}

/* FORM */
.form-wrapper {
  background: #fff;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

/* FALLBACK */
.form-alt {
  margin-top: 20px;
}

.form-alt a {
  display: inline-block;
  margin-top: 10px;
  background: #ff5a1f;
  color: #fff;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
}