:root {
  --primary: #ff5e62;
  --accent: #ff8e53;
  --muted: #6c757d;
  --bg: #fbfbfc;
  --card: #ffffff;
  --glass: rgba(255, 255, 255, 0.9);
  --gradient: linear-gradient(135deg, #ffefef 0%, #fff7f2 100%);
  --shadow: 0 12px 40px rgba(15, 15, 15, 0.06);
  --max-width: 1200px;
  --envelope-bg: #fffdf8;
  --envelope-border: #f0e6e6;
  --stamp-color: #ff385c;
  --text: #111827;
  --muted-contrast: #8a92a6;
  --btn-radius: 12px;
}

html, body {
  height: 100%;
  font-family: Inter, system-ui, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

.container {
  max-width: var(--max-width);
  padding: 0 16px;
  margin: 0 auto;
}

/* Header */
#siteHeader {
  position: sticky;
  top: 0;
  z-index: 1200;
  background: var(--glass);
  padding: 0.7rem 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(6px);
  transition: box-shadow 0.3s;
}

#siteHeader.scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: Poppins, sans-serif;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 6px 20px rgba(255, 94, 98, 0.08);
  transition: transform 0.3s;
}

.brand:hover img {
  transform: scale(1.05);
}

nav.desktop {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

nav.desktop a {
  color: var(--text);
  text-decoration: none;
  padding: 0.48rem 0.7rem;
  border-radius: 10px;
  font-weight: 600;
  transition: background 0.18s, color 0.18s;
}

nav.desktop a:hover {
  background: var(--primary);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: all 0.15s;
  border-radius: var(--btn-radius);
  padding: 0.45rem 0.7rem;
}

.btn-ghost:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Mobile Menu */
.hambtn {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--primary);
  cursor: pointer;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  z-index: 1100;
  border-top: 1px solid rgba(0, 0, 0, 0.03);
  padding: 0.6rem;
  transition: opacity 0.3s;
}

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

/* Hero */
.hero {
  padding: 5rem 0;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('https://ordersosmed.id/assets/images/uploads/cf4d024095930de.jpg') center/cover no-repeat;
  opacity: 0.04;
  z-index: 0;
}

.hero-card {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.6rem;
  border-radius: 18px;
  background: var(--glass);
  display: flex;
  gap: 1.6rem;
  align-items: center;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow);
  transition: transform 0.28s, box-shadow 0.28s;
  backdrop-filter: blur(8px);
}

.hero-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 50px rgba(255, 94, 98, 0.12);
}

.hero-text {
  max-width: 58%;
}

.hero h1 {
  font-family: Poppins, sans-serif;
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  margin: 0;
  line-height: 1.15;
  color: var(--text);
}

.primary-text {
  color: var(--primary);
}

.lead {
  color: var(--muted);
  margin-top: 0.5rem;
  font-size: 1.05rem;
}

.hero-image {
  width: 280px;
  height: 280px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 30px rgba(15, 15, 15, 0.08);
  background: linear-gradient(180deg, #fff, #fff);
}

.hero-image img {
  max-width: 90%;
}

/* Features */
.features .card {
  border: none;
  border-radius: 14px;
  background: var(--glass);
  box-shadow: var(--shadow);
  transition: transform 0.28s;
  backdrop-filter: blur(4px);
}

.features .card:hover {
  transform: translateY(-6px);
}

.icon-animate {
  transition: transform 0.3s;
}

.features .card:hover .icon-animate {
  transform: scale(1.2) rotate(10deg);
}

/* Templates */
.templates .card {
  border: none;
  border-radius: 14px;
  cursor: pointer;
  background: var(--glass);
  box-shadow: var(--shadow);
  transition: all 0.28s;
  backdrop-filter: blur(4px);
}

.templates .card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 50px rgba(255, 94, 98, 0.12);
}

/* Envelope */
.envelope {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  position: relative;
  height: 220px;
  perspective: 1200px;
  display: block;
}

.env-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.env-stage {
  width: 92%;
  height: 84%;
  position: relative;
  transform-style: preserve-3d;
}

.env-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 72%;
  background: var(--envelope-bg);
  border-radius: 12px;
  box-shadow: 0 18px 46px rgba(15, 15, 15, 0.06);
  z-index: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  transform-origin: bottom center;
}

.env-pocket {
  position: absolute;
  left: 0;
  right: 0;
  top: 8%;
  height: 60%;
  border-radius: 12px;
  background: linear-gradient(180deg, #fff6f7, #fff);
  z-index: 0;
}

.env-flap {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 46%;
  background: linear-gradient(180deg, #fff, #f9f2f2);
  border-radius: 12px 12px 0 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  transform-origin: top center;
  z-index: 3;
  transition: transform 0.72s cubic-bezier(0.2, 0.9, 0.3, 1), box-shadow 0.18s;
  box-shadow: 0 6px 20px rgba(15, 15, 15, 0.06);
}

.env-flap::after {
  content: '';
  position: absolute;
  right: 14px;
  top: 12px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--stamp-color), #ff7b88);
  box-shadow: 0 6px 20px rgba(255, 56, 90, 0.12);
  transform: translateZ(1px);
  animation: stamp-pulse 2s infinite;
}

@keyframes stamp-pulse {
  0%, 100% { transform: translateZ(1px) scale(1); }
  50% { transform: translateZ(1px) scale(1.05); }
}

.letter {
  width: 86%;
  height: 82%;
  background: linear-gradient(180deg, #fff, #fffdf8);
  border-radius: 8px;
  padding: 1rem;
  transform: translateY(86%);
  transition: transform 0.72s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 12px 34px rgba(15, 15, 15, 0.04);
  font-family: 'Caveat', cursive;
  font-size: 1.08rem;
  color: var(--primary);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.45;
  border: 2px solid var(--envelope-border);
  padding: 18px;
}

.letter p {
  margin: 0;
}

.envelope.open .env-flap {
  transform: translateY(-40%) rotateX(-180deg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

.envelope.open .letter {
  transform: translateY(-8%);
}

/* CTA */
.cta-section .cta {
  border-radius: 16px;
  padding: 1.4rem;
  background: linear-gradient(135deg, #fff5f5 0%, #fff8f8 100%);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(4px);
}

.cta-text {
  color: var(--text);
}

.cta-text h4 {
  font-family: Poppins, sans-serif;
  font-size: 1.25rem;
  line-height: 1.2;
}

.cta-text p {
  font-size: 0.95rem;
  color: var(--muted);
}

.btn-cta-primary {
  background: var(--primary);
  border: none;
  border-radius: var(--btn-radius);
  padding: 0.6rem 1.5rem;
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

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

/* Footer */
footer {
  padding: 2rem 0;
  color: var(--muted);
  background: linear-gradient(180deg, var(--card), #f8f8f8);
  box-shadow: 0 -2px 6px rgba(0, 0, 0, 0.04);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

footer .social-icons a {
  margin: 0 0.5rem;
  font-size: 1.2rem;
  color: var(--primary);
  transition: color 0.2s, transform 0.2s;
}

footer .social-icons a:hover {
  color: var(--accent);
  transform: scale(1.1);
}

footer .links a {
  margin: 0 0.75rem;
  text-decoration: none;
  color: var(--muted-contrast);
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Editor */
.letter-card {
  border-radius: 12px;
  padding: 1.4rem;
  background: linear-gradient(180deg, #fff, #f8f8f8);
  box-shadow: var(--shadow);
  backdrop-filter: blur(4px);
}

#messageInput {
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 10px;
  transition: box-shadow 0.18s;
  padding: 12px 14px;
}

#messageInput:focus {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  outline: none;
}

/* Toast */
#toastContainer {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 2147483647;
}

/* Media Queries */
@media (max-width: 991px) {
  .hero-card {
    flex-direction: column;
  }
  nav.desktop {
    display: none;
  }
  .hambtn {
    display: inline-flex;
  }
  .envelope {
    height: 190px;
  }
  .letter {
    font-size: 1.02rem;
  }
  .hero-text {
    max-width: 100%;
    text-align: center;
  }
  .hero-image {
    margin-top: 2rem;
  }
  .cta {
    text-align: center;
  }
  .cta-text {
    text-align: center;
  }
}