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

/* === Animationen === */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}
/* Glanz-Effekt für Hover */
@keyframes shine {
    0% {
        background-position: -100%;
    }
    100% {
        background-position: 200%;
    }
}

/* Fade-In für Container beim Laden */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Body Hintergrund === */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(145deg, var(--surface), var(--surface-2));
    color: var(--heading);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* === Header === */
header {
    text-align: center;
    padding: 2rem;
    margin: 2rem auto 1rem;
    width: 90%;
    max-width: 1200px;
    background-color: var(--panel);
    border-radius: 20px;
    box-shadow:
        0 8px 20px var(--glow-w),
        0 4px 12px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease-in-out;
    animation: fadeInUp 0.8s ease-out;
}

header:hover {
    box-shadow:
        0 10px 30px var(--glow-s),
        0 6px 16px rgba(0, 0, 0, 0.5);
}

.logo {
    max-height: 350px;
    width: auto;
    margin-bottom: 1rem;
}

header img {
    max-height: 80px;
    margin-bottom: 1rem;
}

header p.slogan {
    font-style: italic;
    color: var(--accent);
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    text-shadow: 0 0 5px var(--glow-s);
}

/* === Main Bereich === */
main {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 2rem;
    flex: 1;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out;
}

/* === Info-Textfeld === */
.info-box {
    flex: 1 1 400px;
    max-width: 600px;
    background: rgba(0, 9, 22, 0.9);
    padding: 2rem;
    border-radius: 16px;
    box-shadow:
        0 0 15px var(--glow-w),
        0 4px 10px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    animation: fadeInUp 0.9s ease-out;
}

/* === Login/Register Box === */
.login-box {
    flex: 1 1 300px;
    max-width: 400px;
    background: rgba(10, 15, 25, 0.95);
    padding: 2rem;
    border-radius: 16px;
    box-shadow:
        0 0 15px var(--glow-w),
        0 4px 10px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    animation: fadeInUp 1s ease-out;
}

.login-box h2 {
    margin-bottom: 1rem;
    color: var(--accent-2);
}

.login-box form {
    display: flex;
    flex-direction: column;
}

.login-box input,
.login-box button {
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
}

/* === Input === */
.login-box input {
    background-color: var(--heading);
    color: #000;
}

/* === Button mit Glanz- und Licht-Effekt === */
.login-box button {
    background-color: var(--accent);
    color: #000;
    font-weight: bold;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: background-color 0.3s ease-in-out, transform 0.2s ease;
    box-shadow: 0 0 10px var(--glow-s);
}

.login-box button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        120deg,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.5) 50%,
        rgba(255, 255, 255, 0.2) 100%
    );
    transform: skewX(-20deg);
    animation: shine 2s infinite;
}

.login-box button:hover {
    background-color: var(--accent-2);
    transform: scale(1.02);
    box-shadow: 0 0 15px var(--glow-s), 0 0 30px var(--glow-w) inset;
}

/* === Footer === */
footer {
    background-color: var(--panel);
    padding: 1rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--muted);
}

footer a {
    color: var(--accent-2);
    text-decoration: none;
    margin: 0 0.5rem;
}

footer a:hover {
    text-decoration: underline;
}

.theme-toggle {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10;
}

/* Kleinere Switch-Größe */
.switch {
    position: relative;
    display: inline-block;
    width: 42px;
    height: 22px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--muted);
    transition: 0.4s;
    border-radius: 30px;
    box-shadow: 0 0 6px var(--glow-s);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6px;
    font-size: 0.8rem;
    color: silver;
}

.slider:before {
    content: "";
    position: absolute;
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--heading);
    transition: 0.4s;
    border-radius: 50%;
}

/* Bei aktiviertem Switch */
input:checked + .slider {
    background-color: var(--accent);
    color: var(--heading);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.icon {
    pointer-events: none;
    user-select: none;
}

.dashboard-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 9, 22, 0.95);
    border-radius: 20px;
    padding: 2rem;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow:
        0 0 10px var(--glow-w),
        0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease-in-out;
}

.dashboard-tile:hover {
    background-color: var(--glow-w);
    transform: translateY(-3px);
    box-shadow:
        0 6px 16px var(--glow-s),
        0 0 20px var(--glow-w) inset;
}

.dashboard-tile span {
    color: var(--accent);
    text-shadow: 0 0 5px var(--glow-s);
}

/* === Profilbereich === */
.profile-container {
  max-width: 800px;
  margin: 2rem auto;
  background: rgba(0, 9, 22, 0.95);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: 0 0 20px var(--glow-w);
  animation: fadeInUp 0.8s ease-out;
}

.profile-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.profile-form label {
  font-weight: bold;
  color: var(--accent);
}

.profile-form input {
  padding: 0.75rem;
  background-color: var(--surface-2);
  color: var(--heading);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s ease;
}

.btn.save {
  background-color: var(--accent);
  color: var(--surface-2);
}

.btn.save:hover {
  background-color: var(--accent-2);
}

.btn.danger {
  background-color: var(--danger);
  color: white;
}

.btn.danger:hover {
  background-color: var(--danger);
}

/* Profilbild */
.profile-picture img {
  max-height: 150px;
  border-radius: 12px;
  margin-bottom: 1rem;
}
/* === Tab-Navigation oben === */
.tab-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem auto 2rem;
    flex-wrap: wrap;
}

.tab-nav .tab {
    padding: 0.6rem 1.2rem;
    background-color: var(--glow-w);
    color: var(--accent);
    border-radius: 12px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 2px 6px var(--glow-w);
}

.tab-nav .tab:hover {
    background-color: var(--glow-s);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--glow-s);
}

.tab-nav .tab.active {
    background-color: var(--accent);
    color: #000;
}

.success-message {
    background-color: var(--accent);
    color: var(--accent-ink);
    padding: 1rem;
    margin: 1rem auto;
    max-width: 600px;
    border-radius: 10px;
    text-align: center;
    font-weight: bold;
    box-shadow: 0 0 10px var(--glow-s);
}

.success-message {
    background-color: var(--accent);
    color: var(--accent-ink);
    padding: 1rem;
    margin: 1rem auto;
    max-width: 600px;
    border-radius: 10px;
    text-align: center;
    font-weight: bold;
    box-shadow: 0 0 10px var(--glow-s);
    opacity: 1;
    transition: opacity 1.5s ease-out;
}

.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--accent);
    color: var(--accent-ink);
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 0 10px var(--glow-s);
    transition: background-color 0.3s ease, transform 0.3s ease;
    font-size: 1rem;
    z-index: 1000;
}

.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--accent);
    color: var(--accent-ink);
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 0 10px var(--glow-s);
    transition: background-color 0.3s ease, transform 0.3s ease;
    font-size: 1rem;
    z-index: 1000;
}

.back-button:hover {
    background-color: var(--accent-2);
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .back-button {
        top: 10px;
        left: 10px;
        padding: 8px 14px;
        font-size: 0.9rem;
    }
}

<style>
/* Admin-Button Stil */
.admin-btn {
    background-color: var(--accent);
    color: var(--accent-ink);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s, box-shadow 0.3s, transform 0.3s;
    box-shadow: 0 0 10px var(--glow-s);
}

.admin-btn:hover {
    background-color: var(--accent-2);
    box-shadow: 0 0 15px var(--glow-s), 0 0 25px var(--glow-s);
    transform: scale(1.05);
    color: var(--surface-2);
}
</style>

.admin-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.admin-card {
  display: block;
  background-color: var(--glow-w);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  color: var(--accent);
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px var(--glow-w);
}

.admin-card:hover {
  background-color: var(--glow-s);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--glow-w);
}

.admin-card.disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}
.admin-actions {
    text-align: left;
    margin: 1.5rem 2rem;
}

.btn-create {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    background-color: var(--accent);
    color: var(--accent-ink);
    border: none;
    border-radius: 10px;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 4px 10px var(--glow-s);
    transition: background-color 0.3s, transform 0.2s;
}

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