feat: add teal arctique theme with full M3 color scheme, typography, shapes, spacing tokens

- Complete light/dark color schemes (all M3 slots)
- Typography scale (headlineLarge through labelMedium)
- Shape tokens (small 8dp, medium 12dp, large 16dp)
- Dimens spacing object (xs through xxl)
- Add material-icons-extended dependency

composeApp/build.gradle.kts

@@ -37,6 +37,7 @@ kotlin {
                 implementation(compose.runtime)
                 implementation(compose.foundation)
                 implementation(compose.material3)
+                implementation(compose.materialIconsExtended)
                 implementation(compose.components.uiToolingPreview)
                 implementation(libs.ktor.client.core)
                 implementation(libs.ktor.client.content.negotiation)

composeApp/src/commonMain/kotlin/ch/parano/myicek/ui/theme/Dimens.kt

@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// MyIce Kotlin Multiplatform — schedule/convocation viewer
+// Copyright (C) 2026  parano.ch
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package ch.parano.myicek.ui.theme
+
+import androidx.compose.ui.unit.dp
+
+object Dimens {
+    val xs = 4.dp
+    val sm = 8.dp
+    val md = 12.dp
+    val lg = 16.dp
+    val xl = 24.dp
+    val xxl = 32.dp
+}

composeApp/src/commonMain/kotlin/ch/parano/myicek/ui/theme/Theme.kt

@@ -18,28 +18,83 @@
 package ch.parano.myicek.ui.theme
 
 import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Shapes
+import androidx.compose.material3.Typography
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.Color
-
-private val Indigo = Color(0xFF3F51B5)
-private val IndigoLight = Color(0xFF7986CB)
-private val IndigoDark = Color(0xFF303F9F)
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 
 private val LightColors = lightColorScheme(
-    primary = Indigo,
-    onPrimary = Color.White,
-    primaryContainer = IndigoDark,
-    secondary = IndigoLight,
+    primary = Color(0xFF0D9488),
+    onPrimary = Color(0xFFFFFFFF),
+    primaryContainer = Color(0xFF99F6E4),
+    onPrimaryContainer = Color(0xFF134E4A),
+    secondary = Color(0xFF475569),
+    onSecondary = Color(0xFFFFFFFF),
+    secondaryContainer = Color(0xFFE2E8F0),
+    onSecondaryContainer = Color(0xFF1E293B),
+    tertiary = Color(0xFF0EA5E9),
+    onTertiary = Color(0xFFFFFFFF),
+    tertiaryContainer = Color(0xFFE0F2FE),
+    onTertiaryContainer = Color(0xFF075985),
+    error = Color(0xFFDC2626),
+    onError = Color(0xFFFFFFFF),
+    errorContainer = Color(0xFFFEE2E2),
+    onErrorContainer = Color(0xFF7F1D1D),
+    background = Color(0xFFFAFAFA),
+    onBackground = Color(0xFF1C1917),
+    surface = Color(0xFFFFFFFF),
+    onSurface = Color(0xFF1C1917),
+    surfaceVariant = Color(0xFFF1F5F9),
+    onSurfaceVariant = Color(0xFF475569),
+    outline = Color(0xFFCBD5E1),
 )
 
 private val DarkColors = darkColorScheme(
-    primary = IndigoLight,
-    onPrimary = Color.Black,
-    primaryContainer = Indigo,
-    secondary = Indigo,
+    primary = Color(0xFF2DD4BF),
+    onPrimary = Color(0xFF003833),
+    primaryContainer = Color(0xFF0D9488),
+    onPrimaryContainer = Color(0xFF99F6E4),
+    secondary = Color(0xFF94A3B8),
+    onSecondary = Color(0xFF1E293B),
+    secondaryContainer = Color(0xFF334155),
+    onSecondaryContainer = Color(0xFFE2E8F0),
+    tertiary = Color(0xFF0EA5E9),
+    onTertiary = Color(0xFF003547),
+    background = Color(0xFF0F172A),
+    onBackground = Color(0xFFF1F5F9),
+    surface = Color(0xFF1E293B),
+    onSurface = Color(0xFFF1F5F9),
+    surfaceVariant = Color(0xFF334155),
+    onSurfaceVariant = Color(0xFF94A3B8),
+    outline = Color(0xFF475569),
+    error = Color(0xFFF87171),
+    onError = Color(0xFF7F1D1D),
+    errorContainer = Color(0xFF7F1D1D),
+    onErrorContainer = Color(0xFFFECACA),
+)
+
+private val AppTypography = Typography(
+    headlineLarge = TextStyle(fontSize = 28.sp, fontWeight = FontWeight.Bold),
+    titleLarge = TextStyle(fontSize = 22.sp, fontWeight = FontWeight.SemiBold),
+    titleMedium = TextStyle(fontSize = 16.sp, fontWeight = FontWeight.SemiBold),
+    bodyLarge = TextStyle(fontSize = 15.sp, fontWeight = FontWeight.Normal),
+    bodyMedium = TextStyle(fontSize = 14.sp, fontWeight = FontWeight.Normal),
+    bodySmall = TextStyle(fontSize = 13.sp, fontWeight = FontWeight.Normal),
+    labelMedium = TextStyle(fontSize = 12.sp, fontWeight = FontWeight.Medium),
+)
+
+private val AppShapes = Shapes(
+    small = RoundedCornerShape(8.dp),
+    medium = RoundedCornerShape(12.dp),
+    large = RoundedCornerShape(16.dp),
 )
 
 @Composable
@@ -49,6 +104,8 @@ fun MyIceTheme(
 ) {
     MaterialTheme(
         colorScheme = if (darkTheme) DarkColors else LightColors,
+        typography = AppTypography,
+        shapes = AppShapes,
         content = content,
     )
 }