/* ============================================================
   CRYSTAL GLASS UI — Helles 3D-Glas, irisierend
   ============================================================ */

:root {
  --blur: 16px;
  --radius: 24px;
  --glass-white: rgba(255,255,255,0.55);
  --glass-inner: rgba(255,255,255,0.35);
  --text-dark: #3a4a6b;
  --text-mid:  rgba(58,74,107,0.6);
  --iris-1: #a8d8f0;
  --iris-2: #c9b8f5;
  --iris-3: #f0b8d8;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }

body {
  font-family: -apple-system, 'Segoe UI', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text-dark);
}

/* ── Hintergrund ─────────────────────────────────────────── */
.bg-layer {
  position: fixed; inset: 0; z-index: -2;
  background: linear-gradient(135deg, #dff0ff 0%, #e8d8f8 35%, #fbd8ec 65%, #d8eeff 100%);
  background-size: cover;
  background-position: center;
  transition: background 0.6s;
}

.bg-overlay {
  position: fixed; inset: 0; z-index: -1;
  background: rgba(255,255,255,0.1);
}

/* ── Glas-Slab (der 3D-Glasblock-Effekt) ─────────────────── */
.glass-slab {
  background: var(--glass-white);
  backdrop-filter: blur(var(--blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(180%);
  border-radius: var(--radius);
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    /* Tiefenschatten */
    0 20px 60px rgba(140,160,220,0.25),
    0  8px 24px rgba(180,140,220,0.2),
    /* Irisierender Rand rechts+unten (3D-Kante) */
    6px 6px 0px rgba(180,210,240,0.5),
    8px 8px 0px rgba(200,180,240,0.35),
    10px 10px 0px rgba(220,180,220,0.2),
    /* Inneres Highlight oben-links */
    inset 0 1px 0 rgba(255,255,255,0.95),
    inset 1px 0 0 rgba(255,255,255,0.8),
    inset 0 -1px 0 rgba(180,200,240,0.3);
  position: relative;
  overflow: hidden;
}

/* Schimmer oben */
.glass-slab::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 45%;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.6) 0%,
    rgba(255,255,255,0.1) 100%);
  pointer-events: none;
  border-radius: var(--radius) var(--radius) 0 0;
}

/* Irisierende Kante */
.glass-slab::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background:
    linear-gradient(135deg,
      rgba(168,216,240,0.6) 0%,
      rgba(201,184,245,0.4) 40%,
      rgba(240,184,216,0.3) 70%,
      rgba(168,216,240,0.4) 100%)
    border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  pointer-events: none;
}

/* ── Navbar ─────────────────────────────────────────────── */
.glass-nav {
  position: fixed;
  top: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: 1100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.6rem;
  border-radius: 50px;
  z-index: 1000;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 8px 32px rgba(150,170,220,0.2),
    4px 4px 0 rgba(190,210,240,0.4),
    inset 0 1px 0 rgba(255,255,255,0.95);
}

.nav-logo {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-dark);
}

.nav-links { display:flex; list-style:none; gap:0.1rem; }

.nav-link {
  color: var(--text-mid);
  text-decoration: none;
  padding: 0.38rem 0.95rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-dark);
  background: rgba(255,255,255,0.55);
  box-shadow: inset 0 1px 3px rgba(150,170,220,0.3);
}

.nav-actions { display:flex; gap:0.6rem; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  position: relative;
  padding: 0.65rem 1.6rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-dark);
  background: rgba(255,255,255,0.6);
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 4px 14px rgba(150,160,220,0.2),
    3px 3px 0 rgba(190,210,240,0.45),
    inset 0 1px 0 rgba(255,255,255,0.95),
    inset 0 -1px 0 rgba(180,200,240,0.25);
  transition: all 0.2s;
  overflow: hidden;
  letter-spacing: 0.2px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Glanz-Sweep */
.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -80%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
  transform: skewX(-15deg);
  transition: left 0.5s;
}
.btn:hover::before { left: 130%; }

.btn:hover {
  background: rgba(255,255,255,0.75);
  box-shadow:
    0 6px 20px rgba(150,160,220,0.3),
    4px 4px 0 rgba(190,210,240,0.5),
    inset 0 1px 0 rgba(255,255,255,1);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(1px) translateX(2px);
  box-shadow:
    0 2px 8px rgba(150,160,220,0.2),
    1px 1px 0 rgba(190,210,240,0.4),
    inset 0 2px 4px rgba(150,170,220,0.2);
}

/* Primär-Button (lila/iris) */
.btn.primary {
  background: linear-gradient(135deg,
    rgba(180,160,240,0.7) 0%,
    rgba(160,190,240,0.7) 100%);
  color: #fff;
  border-color: rgba(255,255,255,0.7);
  box-shadow:
    0 6px 20px rgba(160,140,220,0.4),
    3px 3px 0 rgba(140,120,200,0.4),
    inset 0 1px 0 rgba(255,255,255,0.8);
}

.btn.primary:hover {
  background: linear-gradient(135deg,
    rgba(180,160,240,0.85) 0%,
    rgba(160,190,240,0.85) 100%);
}

.btn.outline {
  background: rgba(255,255,255,0.3);
}

.btn.sm { padding: 0.42rem 1.1rem; font-size: 0.82rem; }
.btn.full { width: 100%; justify-content: center; }

/* ── Layout ─────────────────────────────────────────────── */
.main-content { padding-top: 90px; }

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  text-align: center;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
  min-height: calc(100vh - 90px);
}

.hero-text { flex: 1; max-width: 480px; }

.hero-eyebrow {
  font-size: 0.73rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-mid);
  margin-bottom: 1.2rem;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 1.2rem;
  letter-spacing: -1.5px;
  color: var(--text-dark);
}

.hero-sub {
  color: var(--text-mid);
  font-size: 0.98rem;
  line-height: 1.75;
  margin-bottom: 2rem;
}

.hero-btns { display:flex; gap:0.8rem; }

/* ── Floating Cards ─────────────────────────────────────── */
.hero-cards {
  flex: 0 0 270px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.glass-card {
  padding: 1.3rem 1.5rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 10px 35px rgba(140,160,220,0.22),
    5px 5px 0 rgba(185,210,240,0.45),
    7px 7px 0 rgba(205,185,240,0.25),
    inset 0 1px 0 rgba(255,255,255,0.95),
    inset 0 -1px 0 rgba(180,200,240,0.2);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.glass-card::before {
  content: '';
  position: absolute;
  top:0; left:0; right:0;
  height: 42%;
  background: linear-gradient(180deg, rgba(255,255,255,0.65), transparent);
  pointer-events: none;
}

.card-label {
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-mid);
  margin-bottom: 0.4rem;
}

.card-value {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-dark);
}

.card-bar {
  height: 5px;
  background: rgba(160,180,230,0.2);
  border-radius: 99px;
  margin: 0.5rem 0 0.3rem;
  overflow: hidden;
}

.card-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--iris-1), var(--iris-2));
  border-radius: 99px;
}

@keyframes float1 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
@keyframes float2 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-7px)} }
@keyframes float3 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-13px)} }

.float-1 { animation: float1 5s ease-in-out infinite; }
.float-2 { animation: float2 6.5s ease-in-out infinite; }
.float-3 { animation: float3 4.5s ease-in-out infinite; }

/* ── Features ───────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px,1fr));
  gap: 1.2rem;
}

.glass-panel {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 10px 36px rgba(140,160,220,0.2),
    5px 5px 0 rgba(185,210,240,0.4),
    7px 7px 0 rgba(205,185,240,0.22),
    inset 0 1px 0 rgba(255,255,255,0.95);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top:0; left:0; right:0;
  height: 38%;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
  pointer-events: none;
}

.glass-panel:hover {
  transform: translateY(-5px) translateX(-2px);
  box-shadow:
    0 18px 50px rgba(140,160,220,0.3),
    7px 7px 0 rgba(185,210,240,0.45),
    10px 10px 0 rgba(205,185,240,0.25),
    inset 0 1px 0 rgba(255,255,255,0.95);
}

.panel-icon { font-size: 1.5rem; opacity: 0.7; }
.glass-panel h3 { font-size: 0.98rem; font-weight: 700; color: var(--text-dark); }
.glass-panel p  { color: var(--text-mid); font-size: 0.87rem; line-height: 1.65; flex:1; }

/* ── Glass Window ───────────────────────────────────────── */
.demo-area {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.glass-window {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.52);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 14px 48px rgba(140,160,220,0.25),
    6px 6px 0 rgba(185,210,240,0.45),
    9px 9px 0 rgba(205,185,240,0.25),
    inset 0 1px 0 rgba(255,255,255,0.95);
  overflow: hidden;
  position: relative;
}

.glass-window::before {
  content: '';
  position: absolute;
  top:0; left:0; right:0;
  height: 40%;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
  pointer-events: none;
  z-index: 0;
}

.window-titlebar {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.75rem 1.2rem;
  border-bottom: 1px solid rgba(180,200,240,0.25);
  background: rgba(255,255,255,0.3);
  position: relative; z-index: 1;
}

.window-dots { display:flex; gap:6px; }

.dot { width:11px; height:11px; border-radius:50%; }
.dot.red    { background: rgba(255,100,100,0.8); box-shadow: 0 0 4px rgba(255,100,100,0.4); }
.dot.yellow { background: rgba(255,200,60,0.8);  box-shadow: 0 0 4px rgba(255,200,60,0.4); }
.dot.green  { background: rgba(60,210,100,0.8);  box-shadow: 0 0 4px rgba(60,210,100,0.4); }

.window-title {
  font-size: 0.82rem;
  color: var(--text-mid);
  flex:1; text-align:center;
}

.window-body {
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  position: relative; z-index: 1;
}

.window-body > p { color: var(--text-mid); font-size: 0.88rem; line-height: 1.6; }
.window-footer { display:flex; gap:0.7rem; justify-content:flex-end; margin-top:0.3rem; }

/* ── Inputs ─────────────────────────────────────────────── */
.input-group { display:flex; flex-direction:column; gap:0.4rem; }

.glass-label { font-size:0.74rem; color:var(--text-mid); letter-spacing:0.5px; }

.glass-input {
  background: rgba(255,255,255,0.45);
  border: 1.5px solid rgba(255,255,255,0.8);
  border-radius: 12px;
  padding: 0.65rem 1rem;
  color: var(--text-dark);
  font-size: 0.88rem;
  outline: none;
  width: 100%;
  transition: all 0.2s;
  box-shadow:
    inset 0 2px 6px rgba(160,180,230,0.2),
    inset 0 1px 2px rgba(0,0,0,0.04);
}

.glass-input:focus {
  border-color: rgba(180,190,240,0.7);
  background: rgba(255,255,255,0.65);
  box-shadow:
    inset 0 2px 6px rgba(160,180,230,0.15),
    0 0 0 3px rgba(180,190,240,0.2);
}

.glass-input::placeholder { color: rgba(100,120,170,0.4); }
.glass-textarea { resize:vertical; min-height:100px; }

/* ── Stats ───────────────────────────────────────────────── */
.stats-column { display:flex; flex-direction:column; gap:1rem; }

.glass-stat {
  padding: 1.4rem 2rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.52);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 8px 28px rgba(140,160,220,0.2),
    5px 5px 0 rgba(185,210,240,0.4),
    inset 0 1px 0 rgba(255,255,255,0.95);
  text-align: center;
  min-width: 130px;
  position: relative; overflow: hidden;
  transition: transform 0.25s;
}

.glass-stat::before {
  content: '';
  position: absolute;
  top:0; left:0; right:0;
  height: 40%;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
  pointer-events: none;
}

.glass-stat:hover { transform: scale(1.04) translateY(-2px); }

.stat-num { display:block; font-size:2.1rem; font-weight:800; color:var(--text-dark); }
.stat-label { font-size:0.7rem; color:var(--text-mid); letter-spacing:1.5px; text-transform:uppercase; }

/* ── Contact ─────────────────────────────────────────────── */
.contact-glass {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 850px;
  margin: 0 auto;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow:
    0 14px 48px rgba(140,160,220,0.22),
    6px 6px 0 rgba(185,210,240,0.42),
    9px 9px 0 rgba(205,185,240,0.22),
    inset 0 1px 0 rgba(255,255,255,0.95);
}

.contact-info {
  padding: 2.5rem 2rem;
  border-right: 1px solid rgba(180,200,240,0.25);
  background: rgba(255,255,255,0.2);
}

.contact-info h3 { font-size:1.15rem; font-weight:700; margin-bottom:0.8rem; color:var(--text-dark); }
.contact-info p  { color:var(--text-mid); font-size:0.87rem; line-height:1.7; margin-bottom:1.5rem; }
.contact-links   { display:flex; flex-direction:column; gap:0.6rem; }

.glass-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.48rem 1rem;
  background: rgba(255,255,255,0.5);
  border: 1.5px solid rgba(255,255,255,0.85);
  border-radius: 50px;
  color: var(--text-mid);
  text-decoration: none;
  font-size: 0.82rem;
  width: fit-content;
  box-shadow: 2px 2px 0 rgba(185,210,240,0.35), inset 0 1px 0 rgba(255,255,255,0.9);
  transition: all 0.2s;
}

.glass-chip:hover { background:rgba(255,255,255,0.7); color:var(--text-dark); transform:translateX(3px); }

.contact-form { padding:2.5rem 2rem; display:flex; flex-direction:column; gap:1.1rem; }

/* ── Upload Button ───────────────────────────────────────── */
.bg-upload-btn {
  position: fixed;
  bottom: 2rem; right: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius);
  cursor: pointer;
  z-index: 900;
  transition: transform 0.2s;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow: 0 8px 28px rgba(140,160,220,0.2), 4px 4px 0 rgba(185,210,240,0.4), inset 0 1px 0 rgba(255,255,255,0.95);
  font-size: 1.3rem;
  color: var(--text-dark);
}

.bg-upload-btn:hover { transform: translateY(-2px); }
.upload-label { font-size:0.6rem; letter-spacing:1px; text-transform:uppercase; color:var(--text-mid); }

/* ── Picker ──────────────────────────────────────────────── */
.bg-picker {
  position: fixed;
  bottom: 2rem; right: 8.5rem;
  width: 215px;
  padding: 1.2rem;
  border-radius: var(--radius);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transform: translateX(10px);
  transition: all 0.25s;
  background: rgba(240,245,255,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1.5px solid rgba(255,255,255,0.9);
  box-shadow: 0 12px 40px rgba(140,160,220,0.25), 4px 4px 0 rgba(185,210,240,0.35), inset 0 1px 0 rgba(255,255,255,0.95);
  color: var(--text-dark);
}

.bg-picker.open { opacity:1; pointer-events:all; transform:translateX(0); }
.bg-picker h4 { font-size:0.76rem; letter-spacing:2px; text-transform:uppercase; color:var(--text-mid); margin-bottom:0.8rem; }

.preset-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:0.5rem; margin-bottom:0.8rem; }

.preset {
  aspect-ratio:1; border-radius:8px; cursor:pointer;
  border: 2px solid transparent;
  transition: transform 0.2s, border-color 0.2s;
}

.preset:hover { transform:scale(1.1); }
.preset.active { border-color: rgba(100,130,200,0.6); box-shadow: 0 0 8px rgba(150,180,240,0.4); }

.picker-hint { font-size:0.7rem; color:var(--text-mid); text-align:center; margin:0.5rem 0; }
.file-name { font-size:0.72rem; color:#7090c0; margin-top:0.4rem; word-break:break-all; }

/* ── Slider ─────────────────────────────────────────────── */
.glass-slider {
  width:100%; height:5px;
  border-radius:99px;
  -webkit-appearance:none;
  background: rgba(160,180,230,0.25);
  outline:none;
  margin-top:0.4rem;
  cursor:pointer;
}

.glass-slider::-webkit-slider-thumb {
  -webkit-appearance:none;
  width:17px; height:17px;
  border-radius:50%;
  background: rgba(255,255,255,0.9);
  cursor:pointer;
  border: 2px solid rgba(160,180,230,0.5);
  box-shadow: 0 2px 8px rgba(140,160,220,0.35), 2px 2px 0 rgba(185,210,240,0.5);
  transition: transform 0.2s;
}

.glass-slider::-webkit-slider-thumb:hover { transform:scale(1.2); }

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:rgba(160,180,230,0.35); border-radius:99px; }

/* ── Selection ───────────────────────────────────────────── */
::selection { background:rgba(180,190,240,0.35); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width:768px) {
  .glass-nav { width:calc(100% - 2rem); }
  .nav-links { display:none; }
  .hero { flex-direction:column; padding:3rem 1.5rem; min-height:auto; }
  .hero-cards { flex-direction:row; flex-wrap:wrap; flex:unset; width:100%; }
  .glass-card { flex:1; min-width:130px; }
  .contact-glass { grid-template-columns:1fr; }
  .contact-info { border-right:none; border-bottom:1px solid rgba(180,200,240,0.2); }
  .bg-picker { right:6rem; }
}