CHORE(merge): merge from develop

- Initial setup and all features from develop branch
- Includes: auth, deploy, docker, style fixes
- K3S deployment configuration

nextjs/app/globals.css

@@ -0,0 +1,73 @@
+@import "tailwindcss";
+
+:root {
+  --background: #ffffff;
+  --foreground: #171717;
+}
+
+@theme inline {
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --font-sans: var(--font-geist-sans);
+  --font-mono: var(--font-geist-mono);
+
+  /* 커스텀 브레이크포인트 */
+  --breakpoint-smalltablet: 600px;
+  --breakpoint-tablet: 600px;
+  --breakpoint-pc: 990px;
+
+  /* 커스텀 애니메이션 */
+  --animate-fade-in: fade-in 0.8s ease-in-out;
+  --animate-fade-in-fast: fade-in-fast 0.3s ease-in-out;
+  --animate-fade-in-up: fade-in-up 1s ease-out;
+  --animate-float: float 3s ease-in-out infinite;
+}
+
+@custom-variant smalltablet (@media (width >= 600px));
+@custom-variant pc (@media (width >= 990px));
+
+body {
+  background: var(--background);
+  color: var(--foreground);
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
+}
+
+@keyframes fade-in {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
+@keyframes fade-in-fast {
+  from {
+    opacity: 0;
+    transform: translateY(-10px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@keyframes fade-in-up {
+  from {
+    opacity: 0;
+    transform: translateY(30px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@keyframes float {
+  0%, 100% {
+    transform: translateY(0);
+  }
+  50% {
+    transform: translateY(-10px);
+  }
+}