Restyle UI with modern glassy theme

frontend/src/css/base.css

@@ -1,13 +1,48 @@
 .main-content {
-  padding-top: 60px; /* Entspricht der Höhe deiner NavBar */
+  max-width: 980px;
+  margin: 90px auto 60px;
+  padding: 28px 32px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  box-shadow: var(--shadow);
+  backdrop-filter: var(--nav-blur);
+  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
 }
 
-:root {
+h1, h2, h3 {
-  font-family: 'Arial', sans-serif;
+  margin: 0 0 12px;
-  transition: background 0.3s, color 0.3s;
+  color: var(--text);
+  letter-spacing: -0.02em;
 }
 
-body {
+h2 {
-  margin: 0;
+  font-size: 1.6rem;
-  padding: 0;
+  font-weight: 700;
+}
+
+p {
+  margin: 0 0 12px;
+  color: var(--muted);
+}
+
+input, textarea {
+  width: 100%;
+  background: var(--input-bg);
+  color: var(--text);
+  border: 1px solid var(--input-border);
+  border-radius: 12px;
+  padding: 12px 14px;
+  font-size: 1rem;
+  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
+}
+
+input:focus, textarea:focus {
+  outline: none;
+  border-color: var(--accent);
+  box-shadow: 0 0 0 4px var(--focus-ring);
+}
+
+input::placeholder, textarea::placeholder {
+  color: var(--muted);
 }

frontend/src/css/buttons.css

@@ -1,24 +1,31 @@
 button {
-  padding: 10px 20px;
+  padding: 12px 18px;
-  border: none;
+  border-radius: 14px;
-  border-radius: 5px;
+  border: 1px solid transparent;
-  margin: 5px;
+  margin: 6px 4px;
   cursor: pointer;
-  font-weight: bold;
+  font-weight: 600;
-}
+  font-size: 1rem;
-
+  letter-spacing: 0.01em;
-body:not(.dark-mode) button {
+  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
-  background-color: #f0f0f0;
+  color: #0b1224;
-  color: #333;
+  box-shadow: 0 12px 30px rgba(14, 165, 233, 0.32);
-  border: 1px solid #ccc;
+  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
-}
-
-body.dark-mode button {
-  background-color: #444;
-  color: #fff;
-  border: 1px solid #888;
 }
 
 button:hover {
-  background-color: #ccc;
+  transform: translateY(-1px);
+  box-shadow: 0 16px 32px rgba(14, 165, 233, 0.38);
+  filter: brightness(1.03);
+}
+
+button:active {
+  transform: translateY(0);
+  box-shadow: 0 10px 20px rgba(14, 165, 233, 0.28);
+}
+
+button:disabled {
+  opacity: 0.55;
+  cursor: not-allowed;
+  box-shadow: none;
 }

frontend/src/css/dark.css

@@ -1,9 +1,21 @@
-.dark {
-  --bg-color: #121212;
-  --text-color: #e0e0e0;
-}
-
 body.dark {
-  background-color: var(--bg-color);
+  --bg: #0b1224;
-  color: var(--text-color);
+  --bg-alt: #0f172a;
+  --surface: #111b30;
+  --surface-2: #0f1629;
+  --text: #e8edf7;
+  --muted: #9fb3d8;
+  --border: #1d2a44;
+  --accent: #22d3ee;
+  --accent-strong: #0ea5e9;
+  --accent-warm: #f59e0b;
+  --input-bg: #0f1b33;
+  --input-border: #1f2c44;
+  --focus-ring: rgba(34, 211, 238, 0.22);
+  --gradient: radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.12), transparent 26%),
+              radial-gradient(circle at 80% 0%, rgba(245, 158, 11, 0.10), transparent 28%),
+              linear-gradient(135deg, #0b1224 0%, #0c152a 50%, #0a1020 100%);
+
+  background: var(--gradient);
+  color: var(--text);
 }

frontend/src/css/homeButtons.css

@@ -1,14 +1,16 @@
 .home-button {
-  background-color: transparent;
+  background: transparent;
-  color: inherit;
+  color: var(--text);
-  border: none;
+  border: 1px solid var(--border);
-  font-size: 16px;
+  font-size: 15px;
-  padding: 5px 10px;
+  padding: 8px 12px;
   cursor: pointer;
-  transition: background-color 0.2s ease;
+  border-radius: 10px;
+  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
 }
 
 .home-button:hover {
-  background-color: rgba(255, 255, 255, 0.1);
+  background: rgba(34, 211, 238, 0.12);
-  border-radius: 5px;
+  border-color: var(--accent);
+  color: var(--accent);
 }

frontend/src/css/index.css

@@ -1,68 +1,56 @@
+@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');
+
 :root {
-  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  --bg: #0b1224;
-  line-height: 1.5;
+  --bg-alt: #0f172a;
+  --surface: #111b30;
+  --surface-2: #0f1629;
+  --text: #e8edf7;
+  --muted: #9fb3d8;
+  --border: #1d2a44;
+  --accent: #22d3ee;
+  --accent-strong: #0ea5e9;
+  --accent-warm: #f59e0b;
+  --shadow: 0 25px 80px rgba(5, 10, 30, 0.45);
+  --radius: 18px;
+  --gradient: radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.12), transparent 26%),
+              radial-gradient(circle at 80% 0%, rgba(245, 158, 11, 0.10), transparent 28%),
+              linear-gradient(135deg, #0b1224 0%, #0c152a 50%, #0a1020 100%);
+  --input-bg: #0f1b33;
+  --input-border: #1f2c44;
+  --focus-ring: rgba(34, 211, 238, 0.22);
+  --nav-blur: blur(10px);
+
+  font-family: 'Space Grotesk', 'Segoe UI', system-ui, -apple-system, sans-serif;
+  line-height: 1.6;
   font-weight: 400;
-
-  color-scheme: light dark;
-  color: rgba(255, 255, 255, 0.87);
-  background-color: #242424;
-
-  font-synthesis: none;
   text-rendering: optimizeLegibility;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
 }
 
-a {
+* {
-  font-weight: 500;
+  box-sizing: border-box;
-  color: #646cff;
-  text-decoration: inherit;
-}
-a:hover {
-  color: #535bf2;
 }
 
 body {
   margin: 0;
-  display: flex;
-  place-items: center;
-  min-width: 320px;
   min-height: 100vh;
+  background: var(--gradient);
+  color: var(--text);
 }
 
-h1 {
+a {
-  font-size: 3.2em;
+  color: var(--accent);
-  line-height: 1.1;
+  text-decoration: none;
+  font-weight: 600;
 }
 
-button {
+a:hover {
-  border-radius: 8px;
+  color: var(--accent-strong);
-  border: 1px solid transparent;
-  padding: 0.6em 1.2em;
-  font-size: 1em;
-  font-weight: 500;
-  font-family: inherit;
-  background-color: #1a1a1a;
-  cursor: pointer;
-  transition: border-color 0.25s;
-}
-button:hover {
-  border-color: #646cff;
-}
-button:focus,
-button:focus-visible {
-  outline: 4px auto -webkit-focus-ring-color;
 }
 
-@media (prefers-color-scheme: light) {
+::selection {
-  :root {
+  background: rgba(34, 211, 238, 0.28);
-    color: #213547;
+  color: #0b1224;
-    background-color: #ffffff;
-  }
-  a:hover {
-    color: #747bff;
-  }
-  button {
-    background-color: #f9f9f9;
-  }
 }

frontend/src/css/light.css

@@ -1,9 +1,21 @@
-.light {
-  --bg-color: #ffffff;
-  --text-color: #222222;
-}
-
 body.light {
-  background-color: var(--bg-color);
+  --bg: #f6f7fb;
-  color: var(--text-color);
+  --bg-alt: #eef2fb;
+  --surface: #ffffff;
+  --surface-2: #f4f7ff;
+  --text: #0f172a;
+  --muted: #5b6475;
+  --border: #dfe4f2;
+  --accent: #0ea5e9;
+  --accent-strong: #0284c7;
+  --accent-warm: #f59e0b;
+  --input-bg: #f7f9fe;
+  --input-border: #d9deeb;
+  --focus-ring: rgba(14, 165, 233, 0.22);
+  --gradient: radial-gradient(circle at 18% 20%, rgba(14, 165, 233, 0.14), transparent 28%),
+              radial-gradient(circle at 82% 0%, rgba(245, 158, 11, 0.12), transparent 32%),
+              linear-gradient(135deg, #f6f7fb 0%, #eef2fb 45%, #e8ecf9 100%);
+
+  background: var(--gradient);
+  color: var(--text);
 }

frontend/src/css/lightDarkToggle.css

@@ -1,14 +1,16 @@
 .toggle-button {
-  background-color: transparent;
+  background: rgba(255, 255, 255, 0.02);
-  color: inherit;
+  color: var(--text);
-  border: none;
+  border: 1px solid var(--border);
-  font-size: 16px;
+  font-size: 14px;
-  padding: 5px 10px;
+  padding: 9px 12px;
   cursor: pointer;
-  transition: background-color 0.2s ease;
+  border-radius: 999px;
+  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
 }
 
 .toggle-button:hover {
-  background-color: rgba(255, 255, 255, 0.1);
+  border-color: var(--accent);
-  border-radius: 5px;
+  color: var(--accent);
+  background: rgba(34, 211, 238, 0.08);
 }

frontend/src/css/menu.css

@@ -1,31 +1 @@
-.navbar {
+/* Reserved for future menu styling; kept empty to avoid conflicting with the navbar theme. */
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  background-color: var(--background-color);
-  padding: 0.5rem 1rem;
-  border-bottom: 1px solid var(--accent-color);
-}
-
-.navbar-left,
-.navbar-right {
-  display: flex;
-  align-items: center;
-}
-
-.navbar-btn {
-  background: none;
-  border: none;
-  color: var(--text-color);
-  font-size: 1rem;
-  cursor: pointer;
-  margin: 0 0.3rem;
-}
-
-.navbar-btn:hover {
-  text-decoration: underline;
-}
-
-.navbar-spacer {
-  width: 1rem;
-}

frontend/src/css/navBar.css

@@ -1,40 +1,57 @@
 .navbar {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  padding: 10px 20px;
-  background-color: var(--background-color);
-  color: var(--text-color);
   position: fixed;
   top: 0;
   left: 0;
   right: 0;
-  height: 60px;
+  height: 68px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 0 22px;
+  background: rgba(12, 21, 42, 0.7);
+  border-bottom: 1px solid var(--border);
+  backdrop-filter: blur(12px);
+  color: var(--text);
   z-index: 999;
 }
 
-/* Wenn du Elemente gruppieren willst */
 .nav-left,
 .nav-right {
   display: flex;
   align-items: center;
-  gap: 10px;
+  gap: 12px;
+}
+
+.nav-button {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 14px;
+  border-radius: 12px;
+  border: 1px solid transparent;
+  color: var(--text);
+  font-weight: 700;
+  letter-spacing: 0.01em;
+  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
+}
+
+.nav-button:hover {
+  background: rgba(34, 211, 238, 0.12);
+  border-color: rgba(34, 211, 238, 0.25);
+  color: var(--accent);
 }
 
-.navbar a,
 .navbar button {
   background: none;
-  border: none;
+  border: 1px solid var(--border);
   color: var(--text);
-  font-size: 16px;
+  padding: 10px 14px;
-  cursor: pointer;
+  border-radius: 12px;
-  text-decoration: none;
+  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
-  padding: 6px 12px;
-  transition: background-color 0.3s;
 }
 
-.navbar a:hover,
 .navbar button:hover {
-  background-color: var(--accent-hover);
+  border-color: var(--accent);
-  border-radius: 4px;
+  color: var(--accent);
+  background: rgba(34, 211, 238, 0.08);
 }