/* Global */
html {
  scroll-behavior: smooth;
}

/* ===========================
   Custom Variables
   =========================== */
:root {
  --primary: #007bff; /* Blau für Frontend */
  --accent: #ff9800; /* Orange für App */
  --backend: #28a745; /* Grün für Backend */
  --other: #6c757d; /* Grau für Sonstige */
  --bg-light: #f8fafc;
  --text-light: #1a202c;
  --text-muted-light: #2d3748;
  --bg-dark: #0f1720;
  --text-dark: #f7fafc;
  --text-muted-dark: #ffffff;
  --card-bg: rgba(255, 255, 255, 0.95);
  --card-bg-dark: rgba(26, 32, 44, 0.9);
  --radius: 12px;
}

/* ===========================
   Fonts
   =========================== */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Montserrat:wght@300;600;700&display=swap');

/* ===========================
   Base Styles
   =========================== */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  background: var(--bg-light);
  color: var(--text-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.5s, color 0.5s;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===========================
   Dark Mode
   =========================== */
body.dark-mode {
  background: var(--bg-dark);
  color: var(--text-dark);
}

body.dark-mode h1, body.dark-mode h2, body.dark-mode h3,
body.dark-mode h4, body.dark-mode h5 {
  color: #ffffff;
  font-weight: 700;
}

body.dark-mode p, body.dark-mode li, body.dark-mode span {
  color: var(--text-dark);
}

body.dark-mode .text-muted, body.dark-mode .small {
  color: var(--text-muted-dark);
}

body.dark-mode .navbar {
  background: rgba( 15, 23, 32, 0.8 );
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* Smooth transitions für alle Elemente im Darkmode */
body, .card, .btn, input, textarea, .badge-tech, footer {
  transition: background 0.3s, color 0.3s, box-shadow 0.3s, transform 0.3s;
}


/* ===========================
   Theme Toggle Button
   =========================== */
#theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,123,255,0.3);
}

#theme-toggle:hover {
  background: var(--accent);
  box-shadow: 0 6px 18px rgba(255,152,0,0.35);
  transform: scale(1.1);
}

body.dark-mode #theme-toggle {
  background: var(--accent);
}

body.dark-mode #theme-toggle:hover {
  background: var(--primary);
}

/* ===========================
   Header
   =========================== */
.site-header {
  padding: 40px 0 8px;
  background: linear-gradient(135deg, rgba(0,0,0,0.25), rgba(0,0,0,0.35));
}

.display-5 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
}

.header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.header-text {
  flex: 1 1 60%;
}

.header-photo {
  flex: 0 0 160px;
  text-align: center;
}

.header-photo img {
  width: 200px;
  height: 260px;
  object-fit: cover;
  border-radius: 80%;
  border: 3px solid rgba(255,255,255,0.4);
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
}

.header-photo img:hover {
  transform: scale(1.05);
}

/* ===========================
   Availability Banner
   =========================== */
.availability-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, #007bff, #0056b3);
  color: white;
  padding: 1rem 0;
  z-index: 1050;
  box-shadow: 0 4px 12px rgba( 0, 123, 255, 0.3);
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.4s ease;
  border-bottom: 3px solid rgba(255,255,255,0.2);
}

.availability-banner.show {
  transform: translateY(0);
  opacity: 1;
}

/* Banner Toggle Icon Rotation */
#toggle-banner i {
  transition: transform 0.3s ease;
}

#toggle-banner.collapsed i {
  transform: rotate(180deg);
}

/* ===========================
   Global Toggle Button
   =========================== */
#global-toggle {
  border-radius: 20px;
  padding: 0.5rem 0.75rem;
  box-shadow: 0 2px 8px rgba(0,123,255,0.3);
  transition: all 0.3s ease;
}

#global-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,123,255,0.4);
  background: linear-gradient(45deg, var(--primary), var(--accent));
}

/* ===========================
    Particles Background
   =========================== */
.particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  transition: opacity 0.3s ;
}

.particles-bg.hidden {
  opacity: 0;
}

/* ===========================
   Body Padding für Banner
   =========================== */
body.banner-open {
  padding-top: 80px;
  transition: padding-top 0.3s ease;
}

/* ===========================
   Main Container
   =========================== */
main.container {
  max-width: 980px;
  margin-top: 2rem;
}

/* ===========================
   Sections & Cards
   =========================== */
section {
  margin-bottom: 30px;
  text-align: center;
}

section h2 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  position: relative;
  display: inline-block;
  margin-bottom: 2rem;
}

section h2::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;

  background: var(--primary);
  margin-top: 0.4rem;
  border-radius: 4px;
}

.card {
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: 0 8px 24px rgba(2,6,23,0.06);
}

body.dark-mode .card {
  background: var(--card-bg-dark);
}

body.dark-mode section h2::after {
  background: var(--accent);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(2,6,23,0.12);
}

/* ===========================
   Focus Section
   =========================== */
.card, #focus .p-4 {
  transition: all 0.3s ease;
  background: var(--card-bg);
  border: 1px solid rgba(0,0,0,0.05)
}

body.dark-mode #focus .p-4 {
  background: var(--card-bg-dark);
  border: 1px solid rgba(255,255,255,0.08);
}

.card:hover, #focus .p-4:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

#focus h4 {
  font-weight: 700;
  margin-bottom: 0.8rem;
}

/* Fix für Fokus-Kacheln im Dark Mode */
body.dark-mode #focus .p-4 {
  background: var(--card-bg-dark) !important; /* dunkler Hintergrund */
  color: var(--text-dark) !important;         /* Textfarbe sichtbar */
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Überschriften & Paragraphen innerhalb der Kacheln */
body.dark-mode #focus .p-4 h4,
body.dark-mode #focus .p-4 p {
  color: var(--text-dark) !important;
}

.doc-preview-container {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 20px;
    transition: transform 0.2s;
}

.doc-preview-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.doc-iframe {
    width: 100%;
    height: 450px; /* Hier steuerst du die Sichtbarkeit */
    border: none;
    border-radius: 4px;
}

.doc-caption {
    font-size: 0.85rem;
    margin-top: 10px;
    display: block;
    font-weight: 500;
}

/* ===========================
   Projekt Cards mit Fade-In
   =========================== */
#projects .card {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

#projects .card.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.btn-live-demo {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 0.7em 1.4em;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-live-demo:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

/* ===========================
   Buttons & Badges
   =========================== */
.btn-primary, .btn-icon {
  transition: all 0.25s ease;
}

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

.btn-secondary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.badge-tech {
  font-weight: 500;
  padding: 0.5em 0.8em;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  color: white;
  border-radius: 20px;
}


.badge-tech.frontend { background: var(--primary); }
.badge-tech.backend { background: var(--backend); }
.badge-tech.app { background: var(--accent); }
.badge-tech.other { background: var(--other); }

.badge-tech:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

/* ===========================
   Form Inputs
   =========================== */
form input, form textarea {
  border-radius: 8px;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s, color 0.3s;
  color: var(--text-light);
  background: #fff;
}

form input::placeholder, form textarea::placeholder {
  color: #4a5568;
  opacity: 1;
}

body.dark-mode form input, body.dark-mode form textarea {
  background-color: #1a202c;
  color: var(--text-dark);
  border-color: #4a5568;
}

body.dark-mode form input::placeholder, body.dark-mode form textarea::placeholder {
  color: var(--text-muted-dark);
}

form input:focus, form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 8px rgba(0,123,255,0.25);
}

body.dark-mode form input:focus, body.dark-mode form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 6px rgba(255,152,0,0.3);
}

/* ===========================
   Back to Top Button
   =========================== */
#back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 900;
  border: none;
  background: var(--primary);
  color: white;
  cursor: pointer;
  padding: 10px 12px;
  border-radius: 50%;
  font-size: 1.25rem;
  transition: all 0.25s ease;
}

#back-to-top:hover {
  background: var(--accent);
  transform: translateY(-4px) scale(1.1);

}

#back-to-top.d-none {
  opacity: 0;
  pointer-events: none;
}

/* ===========================
   Responsive Anpassungen
   =========================== */
@media (max-width: 768px) {
  .site-header { padding: 28px 12px; }
  .header-flex { flex-direction: column-reverse; text-align: center; }
  .availability-banner { font-size: 0.99rem; padding: 9px 0; }
  .availability-banner .btn { font-size: 0.85rem; padding: 4px 8px; }
  .card-body p { font-size: 0.95rem; }
}

/* ===========================
   Footer
   =========================== */
footer {
  background: rgba( 0, 0 , 0, 0.03);
  border-top: 1px solid rgba(0,0,0,0.05);
  padding: 20px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

footer .btn-icon {
  color: var(--primary);
  margin: 0 0.3rem;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease, transform 0.2s ease;
}

footer .btn-icon:hover {
  color: var(--accent);
  transform: translateY(-3px);
}

body.dark-mode footer .btn-icon {
  color: var(--text-dark);
}

body.dark-mode footer {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted-dark);
}

/* ===========================
   Impressum Section
   =========================== */
#impressum {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(0,0,0,0.1);
}
body.dark-mode #impressum {
  color: var(--text-muted-dark);
  border-top: 1px solid rgba(255,255,255,0.1);
}   

/* ===========================
   Utility Classes
   =========================== */
.text-muted {
  color: var(--text-muted-light) !important;
}
body.dark-mode .text-muted {
  color: var(--text-muted-dark) !important;
}
.small {
  font-size: 0.875rem;
}