/* ==========================================================================
   CLEAN & MINIMALIST BIRTHDAY THEME (Original-Inspired with Red Accents)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;1,300;1,400&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg-color: #ffd3d1;        /* Warm rose-red original background */
  --bg-banner: #fab9b6;       /* Original banner tone */
  --bg-card: #ffffff;
  
  --red-primary: #d32f2f;     /* Classic festive red */
  --red-hover: #b71c1c;       /* Darker red hover */
  --red-accent: #e53935;
  --red-soft: #ffebee;
  --red-border: #ffcdd2;
  
  --text-dark: #2c3e50;
  --text-muted: #555555;
  --header-height: 70px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body, html {
  width: 100%;
  min-height: 100vh;
  font-family: 'Lato', sans-serif;
  font-weight: 400;
  background-color: var(--bg-color);
  color: var(--text-dark);
  overflow-x: hidden;
}

/* ==========================================================================
   CLEAN HEADER & NAVIGATION
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-title {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--red-primary);
  text-decoration: none;
}

/* Menu links: Home & to cordes design */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
}

.nav-item a {
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: #333333;
  padding: 8px 18px;
  border-radius: 20px;
  transition: all 0.2s ease;
  display: inline-block;
}

.nav-item a:hover {
  background-color: var(--red-soft);
  color: var(--red-primary);
}

.nav-item a.active {
  background-color: var(--red-primary);
  color: #ffffff;
}

.nav-item-cordes a {
  background-color: #fff0f0;
  border: 1px solid var(--red-border);
  color: var(--red-primary);
}

.nav-item-cordes a:hover {
  background-color: var(--red-primary);
  color: #ffffff;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Schlichte Minimalistische Icons in der Menüleiste */
.header-icon-btn {
  background: transparent;
  border: none;
  color: #555555;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.header-icon-btn:hover {
  background-color: var(--red-soft);
  color: var(--red-primary);
}

.header-icon-btn svg {
  stroke: currentColor;
}

/* ==========================================================================
   CAKE STAGE & CENTERING
   ========================================================================== */
.stacked-container {
  width: 100%;
  height: calc(100vh - var(--header-height));
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
}

.bottom-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.cake-holder {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: translateY(-95px);
}

.content-wrap {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* Cards & Buttons */
.simple-card {
  background-color: #ffffff;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  margin: 30px auto;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(211, 47, 47, 0.15);
  max-width: 800px;
}

.simple-card h2 {
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--red-primary);
  font-size: 1.7rem;
  margin-bottom: 12px;
}

.simple-card p {
  color: #444444;
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 18px;
}

.btn-red {
  background-color: var(--red-primary);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-red:hover {
  background-color: var(--red-hover);
  transform: translateY(-1px);
}

.btn-red-outline {
  background-color: transparent;
  color: var(--red-primary);
  border: 2px solid var(--red-primary);
  border-radius: 6px;
  padding: 10px 22px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-red-outline:hover {
  background-color: var(--red-primary);
  color: #ffffff;
}

.btn-red-outline svg {
  stroke: currentColor;
}

/* Mobile Hamburger */
.hamburger {
  cursor: pointer;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
}

.hamburger div {
  height: 3px;
  background-color: #333333;
  border-radius: 2px;
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .header {
    padding: 0 16px;
  }

  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: #ffffff;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.12);
    display: none;
    z-index: 99;
  }

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

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

  .nav-item a {
    width: 100%;
    padding: 12px;
  }
  
  .header-title {
    font-size: 1.25rem;
  }

  .cake-holder {
    transform: translateY(-65px) scale(0.92);
  }

  #gruss {
    font-size: 1.85rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 0 10px;
  }

  .header-left {
    gap: 10px;
  }

  .header-title {
    font-size: 1.05rem;
    letter-spacing: -0.01em;
  }

  .header-right {
    gap: 4px;
  }

  .header-icon-btn {
    padding: 5px;
  }

  .header-icon-btn svg {
    width: 18px;
    height: 18px;
  }

  .cake-holder {
    transform: translateY(-55px) scale(0.85);
  }

  #gruss {
    font-size: 1.55rem;
  }

  .cake_text p {
    font-size: 0.92rem;
  }
}

@media (max-height: 680px) {
  .cake-holder {
    transform: translateY(-40px) scale(0.8);
  }
}