feat: redesign measurement add page with weight-focused layout

Replace flat form with hero weight card (±0.1 stepper, last-weight
placeholder, clear button) and collapsible accordion sections for
body fat and body part measurements. Body parts grouped by region.

src/routes/fitness/[measure=fitnessMeasure]/add/+page.svelte

@@ -3,12 +3,23 @@
 	import { goto } from '$app/navigation';
 	import { detectFitnessLang, t } from '$lib/js/fitnessI18n';
 	import { toast } from '$lib/js/toast.svelte';
+	import { Weight, Percent, Ruler, ChevronDown, Plus, Minus, X } from '@lucide/svelte';
 	import SaveFab from '$lib/components/SaveFab.svelte';
 
 	const lang = $derived(detectFitnessLang($page.url.pathname));
 	const measureSlug = $derived(lang === 'en' ? 'measure' : 'messen');
 
 	let saving = $state(false);
+	let lastWeight = $state(/** @type {number|null} */ (null));
+
+	$effect(() => {
+		fetch('/api/fitness/measurements/latest')
+			.then(r => r.ok ? r.json() : null)
+			.then(d => {
+				if (d?.weight?.value != null) lastWeight = d.weight.value;
+			})
+			.catch(() => {});
+	});
 
 	let formDate = $state(new Date().toISOString().slice(0, 10));
 	let formWeight = $state('');
@@ -27,6 +38,14 @@
 	let formCalvesL = $state('');
 	let formCalvesR = $state('');
 
+	function stepWeight(delta) {
+		const cur = Number(formWeight) || lastWeight || 0;
+		formWeight = String(Math.round((cur + delta) * 10) / 10);
+	}
+
+	let showBodyFat = $state(false);
+	let showBodyParts = $state(false);
+
 	function buildBody() {
 		/** @type {any} */
 		const body = { date: formDate };
@@ -80,52 +99,121 @@
 <svelte:head><title>{t('new_measurement', lang)} - Bocken</title></svelte:head>
 
 <div class="measure-add">
-	<h1>{t('new_measurement', lang)}</h1>
-
 	<form onsubmit={(e) => { e.preventDefault(); saveMeasurement(); }}>
-		<div class="form-group">
+		<!-- Date pill -->
-			<label for="m-date">{t('date', lang)}</label>
+		<div class="date-row">
-			<input id="m-date" type="date" bind:value={formDate} />
+			<input type="date" bind:value={formDate} class="date-pill" />
 		</div>
 
-		<h3>{t('general', lang)}</h3>
+		<!-- Weight hero -->
-		<div class="form-row">
+		<div class="weight-card">
-			<div class="form-group">
+			<div class="weight-icon"><Weight size={20} /></div>
-				<label for="m-weight">{t('weight_kg', lang)}</label>
+			<div class="weight-stepper">
-				<input id="m-weight" type="number" step="0.1" bind:value={formWeight} placeholder="--" />
+				<button type="button" class="step-btn" onclick={() => stepWeight(-0.1)} aria-label="-0.1">
-			</div>
+					<Minus size={18} />
-			<div class="form-group">
+				</button>
-				<label for="m-bf">{t('body_fat_pct', lang)}</label>
+				<div class="weight-input-wrap">
-				<input id="m-bf" type="number" step="0.1" bind:value={formBodyFat} placeholder="--" />
+					<input
+						id="m-weight"
+						type="number"
+						step="0.1"
+						bind:value={formWeight}
+						placeholder={lastWeight != null ? String(lastWeight) : '0.0'}
+						class="weight-input"
+						inputmode="decimal"
+					/>
+					<span class="weight-unit">kg</span>
+				</div>
+				<button type="button" class="step-btn" onclick={() => stepWeight(0.1)} aria-label="+0.1">
+					<Plus size={18} />
+				</button>
 			</div>
+			<label for="m-weight" class="weight-label">{lang === 'en' ? 'Weight' : 'Gewicht'}</label>
+			{#if formWeight}
+				<button type="button" class="weight-clear" onclick={() => formWeight = ''}>
+					<X size={12} /> {lang === 'en' ? 'Clear' : 'Leeren'}
+				</button>
+			{/if}
 		</div>
 
-		<h3>{t('body_parts_cm', lang)}</h3>
+		<!-- Body Fat accordion -->
-		<div class="form-row">
+		<button type="button" class="section-toggle" onclick={() => showBodyFat = !showBodyFat}>
-			<div class="form-group"><label for="m-neck">{t('neck', lang)}</label><input id="m-neck" type="number" step="0.1" bind:value={formNeck} placeholder="--" /></div>
+			<span class="section-toggle-left">
-			<div class="form-group"><label for="m-shoulders">{t('shoulders', lang)}</label><input id="m-shoulders" type="number" step="0.1" bind:value={formShoulders} placeholder="--" /></div>
+				<Percent size={16} />
-			<div class="form-group"><label for="m-chest">{t('chest', lang)}</label><input id="m-chest" type="number" step="0.1" bind:value={formChest} placeholder="--" /></div>
+				{t('body_fat_pct', lang)}
-		</div>
+				{#if formBodyFat}<span class="section-preview">{formBodyFat}%</span>{/if}
-		<div class="form-row">
+			</span>
-			<div class="form-group"><label for="m-bl">{t('l_bicep', lang)}</label><input id="m-bl" type="number" step="0.1" bind:value={formBicepsL} placeholder="--" /></div>
+			<ChevronDown size={16} class="chevron {showBodyFat ? 'open' : ''}" />
-			<div class="form-group"><label for="m-br">{t('r_bicep', lang)}</label><input id="m-br" type="number" step="0.1" bind:value={formBicepsR} placeholder="--" /></div>
+		</button>
-		</div>
+		{#if showBodyFat}
-		<div class="form-row">
+			<div class="section-body">
-			<div class="form-group"><label for="m-fl">{t('l_forearm', lang)}</label><input id="m-fl" type="number" step="0.1" bind:value={formForearmsL} placeholder="--" /></div>
+				<div class="bf-input-wrap">
-			<div class="form-group"><label for="m-fr">{t('r_forearm', lang)}</label><input id="m-fr" type="number" step="0.1" bind:value={formForearmsR} placeholder="--" /></div>
+					<input
-		</div>
+						id="m-bf"
-		<div class="form-row">
+						type="number"
-			<div class="form-group"><label for="m-waist">{t('waist', lang)}</label><input id="m-waist" type="number" step="0.1" bind:value={formWaist} placeholder="--" /></div>
+						step="0.1"
-			<div class="form-group"><label for="m-hips">{t('hips', lang)}</label><input id="m-hips" type="number" step="0.1" bind:value={formHips} placeholder="--" /></div>
+						bind:value={formBodyFat}
-		</div>
+						placeholder="0.0"
-		<div class="form-row">
+						class="bf-input"
-			<div class="form-group"><label for="m-tl">{t('l_thigh', lang)}</label><input id="m-tl" type="number" step="0.1" bind:value={formThighsL} placeholder="--" /></div>
+						inputmode="decimal"
-			<div class="form-group"><label for="m-tr">{t('r_thigh', lang)}</label><input id="m-tr" type="number" step="0.1" bind:value={formThighsR} placeholder="--" /></div>
+					/>
-		</div>
+					<span class="bf-unit">%</span>
-		<div class="form-row">
+				</div>
-			<div class="form-group"><label for="m-cl">{t('l_calf', lang)}</label><input id="m-cl" type="number" step="0.1" bind:value={formCalvesL} placeholder="--" /></div>
+			</div>
-			<div class="form-group"><label for="m-cr">{t('r_calf', lang)}</label><input id="m-cr" type="number" step="0.1" bind:value={formCalvesR} placeholder="--" /></div>
+		{/if}
-		</div>
+
+		<!-- Body Parts accordion -->
+		<button type="button" class="section-toggle" onclick={() => showBodyParts = !showBodyParts}>
+			<span class="section-toggle-left">
+				<Ruler size={16} />
+				{t('body_parts_cm', lang)}
+			</span>
+			<ChevronDown size={16} class="chevron {showBodyParts ? 'open' : ''}" />
+		</button>
+		{#if showBodyParts}
+			<div class="section-body">
+				<div class="bp-group">
+					<span class="bp-group-label">{lang === 'en' ? 'Upper body' : 'Oberkörper'}</span>
+					<div class="bp-row">
+						<div class="bp-field"><label for="m-neck">{t('neck', lang)}</label><input id="m-neck" type="number" step="0.1" bind:value={formNeck} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-shoulders">{t('shoulders', lang)}</label><input id="m-shoulders" type="number" step="0.1" bind:value={formShoulders} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-chest">{t('chest', lang)}</label><input id="m-chest" type="number" step="0.1" bind:value={formChest} placeholder="--" inputmode="decimal" /></div>
+					</div>
+				</div>
+
+				<div class="bp-group">
+					<span class="bp-group-label">{lang === 'en' ? 'Arms' : 'Arme'}</span>
+					<div class="bp-row">
+						<div class="bp-field"><label for="m-bl">{t('l_bicep', lang)}</label><input id="m-bl" type="number" step="0.1" bind:value={formBicepsL} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-br">{t('r_bicep', lang)}</label><input id="m-br" type="number" step="0.1" bind:value={formBicepsR} placeholder="--" inputmode="decimal" /></div>
+					</div>
+					<div class="bp-row">
+						<div class="bp-field"><label for="m-fl">{t('l_forearm', lang)}</label><input id="m-fl" type="number" step="0.1" bind:value={formForearmsL} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-fr">{t('r_forearm', lang)}</label><input id="m-fr" type="number" step="0.1" bind:value={formForearmsR} placeholder="--" inputmode="decimal" /></div>
+					</div>
+				</div>
+
+				<div class="bp-group">
+					<span class="bp-group-label">{lang === 'en' ? 'Core' : 'Rumpf'}</span>
+					<div class="bp-row">
+						<div class="bp-field"><label for="m-waist">{t('waist', lang)}</label><input id="m-waist" type="number" step="0.1" bind:value={formWaist} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-hips">{t('hips', lang)}</label><input id="m-hips" type="number" step="0.1" bind:value={formHips} placeholder="--" inputmode="decimal" /></div>
+					</div>
+				</div>
+
+				<div class="bp-group">
+					<span class="bp-group-label">{lang === 'en' ? 'Legs' : 'Beine'}</span>
+					<div class="bp-row">
+						<div class="bp-field"><label for="m-tl">{t('l_thigh', lang)}</label><input id="m-tl" type="number" step="0.1" bind:value={formThighsL} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-tr">{t('r_thigh', lang)}</label><input id="m-tr" type="number" step="0.1" bind:value={formThighsR} placeholder="--" inputmode="decimal" /></div>
+					</div>
+					<div class="bp-row">
+						<div class="bp-field"><label for="m-cl">{t('l_calf', lang)}</label><input id="m-cl" type="number" step="0.1" bind:value={formCalvesL} placeholder="--" inputmode="decimal" /></div>
+						<div class="bp-field"><label for="m-cr">{t('r_calf', lang)}</label><input id="m-cr" type="number" step="0.1" bind:value={formCalvesR} placeholder="--" inputmode="decimal" /></div>
+					</div>
+				</div>
+			</div>
+		{/if}
 
 		<SaveFab disabled={saving} label={t('save_measurement', lang)} />
 	</form>
@@ -133,60 +221,270 @@
 
 <style>
 	.measure-add {
+		max-width: 480px;
+		margin-inline: auto;
+	}
+
+	/* Date pill */
+	.date-row {
+		display: flex;
+		justify-content: center;
+		margin-bottom: 1rem;
+	}
+	.date-pill {
+		background: var(--color-bg-tertiary);
+		border: 1px solid var(--color-border);
+		border-radius: var(--radius-pill);
+		padding: 0.35rem 1rem;
+		font-size: 0.8rem;
+		color: var(--color-text-secondary);
+		cursor: pointer;
+		text-align: center;
+	}
+	.date-pill:focus {
+		outline: none;
+		border-color: var(--color-primary);
+	}
+
+	/* Weight hero card */
+	.weight-card {
+		background: var(--color-surface);
+		border-radius: var(--radius-card);
+		box-shadow: var(--shadow-md);
+		padding: 1.5rem 1rem 1.25rem;
 		display: flex;
 		flex-direction: column;
-		gap: 1rem;
+		align-items: center;
+		gap: 0.3rem;
+		margin-bottom: 0.75rem;
 	}
-	h1 {
+	.weight-icon {
+		color: var(--color-primary);
+		margin-bottom: 0.25rem;
+	}
+	.weight-stepper {
+		display: flex;
+		align-items: center;
+		gap: 0.75rem;
+	}
+	.step-btn {
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		width: 2.4rem;
+		height: 2.4rem;
+		border-radius: 50%;
+		border: 1px solid var(--color-border);
+		background: var(--color-bg-tertiary);
+		color: var(--color-text-primary);
+		cursor: pointer;
+		transition: background var(--transition-normal), border-color var(--transition-normal);
+	}
+	.step-btn:hover {
+		background: var(--color-bg-elevated);
+		border-color: var(--color-primary);
+	}
+	.step-btn:active {
+		background: var(--color-primary);
+		color: var(--color-text-on-primary);
+		border-color: var(--color-primary);
+	}
+	.weight-input-wrap {
+		display: flex;
+		align-items: baseline;
+		gap: 0.3rem;
+	}
+	.weight-input {
+		width: 5ch;
+		border: none;
+		background: transparent;
+		font-size: 2.4rem;
+		font-weight: 700;
+		color: var(--color-text-primary);
+		text-align: center;
+		-moz-appearance: textfield;
+		appearance: textfield;
+	}
+	.weight-input::placeholder {
+		color: var(--color-text-tertiary);
+	}
+	.weight-input::-webkit-inner-spin-button,
+	.weight-input::-webkit-outer-spin-button {
+		-webkit-appearance: none;
 		margin: 0;
-		font-size: 1.4rem;
 	}
-	h3 {
+	.weight-input:focus {
-		margin: 0.75rem 0 0.25rem;
+		outline: none;
-		font-size: 0.85rem;
+	}
+	.weight-unit {
+		font-size: 1rem;
+		font-weight: 600;
 		color: var(--color-text-secondary);
 	}
-	form {
+	.weight-label {
-		background: var(--color-surface);
+		font-size: 0.7rem;
-		border-radius: 8px;
+		font-weight: 600;
-		box-shadow: var(--shadow-sm);
+		text-transform: uppercase;
-		padding: 1rem;
+		letter-spacing: 0.06em;
+		color: var(--color-text-secondary);
 	}
-	.form-row {
+	.weight-clear {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.25rem;
+		margin-top: 0.25rem;
+		padding: 0.2rem 0.6rem;
+		border: none;
+		border-radius: var(--radius-pill);
+		background: var(--color-bg-tertiary);
+		color: var(--color-text-secondary);
+		font-size: 0.7rem;
+		cursor: pointer;
+		transition: background var(--transition-normal);
+	}
+	.weight-clear:hover {
+		background: var(--color-bg-elevated);
+		color: var(--color-text-primary);
+	}
+
+	/* Section toggles (accordions) */
+	.section-toggle {
+		width: 100%;
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		background: var(--color-surface);
+		border: 1px solid var(--color-border);
+		border-radius: var(--radius-lg);
+		padding: 0.7rem 0.85rem;
+		font-size: 0.85rem;
+		font-weight: 600;
+		color: var(--color-text-primary);
+		cursor: pointer;
+		margin-bottom: 0;
+		transition: background var(--transition-normal);
+	}
+	.section-toggle:hover {
+		background: var(--color-surface-hover, var(--color-bg-elevated));
+	}
+	.section-toggle + .section-toggle {
+		margin-top: 0.5rem;
+	}
+	.section-toggle-left {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+	}
+	.section-preview {
+		font-weight: 400;
+		color: var(--color-text-secondary);
+		font-size: 0.8rem;
+	}
+	.section-toggle :global(.chevron) {
+		transition: transform var(--transition-normal);
+		color: var(--color-text-secondary);
+	}
+	.section-toggle :global(.chevron.open) {
+		transform: rotate(180deg);
+	}
+
+	/* Section body (expanded content) */
+	.section-body {
+		background: var(--color-surface);
+		border: 1px solid var(--color-border);
+		border-top: none;
+		border-radius: 0 0 var(--radius-lg) var(--radius-lg);
+		padding: 0.75rem 0.85rem;
+		margin-bottom: 0.5rem;
+	}
+	/* Round bottom off toggle when section is open */
+	.section-toggle:has(+ .section-body) {
+		border-radius: var(--radius-lg) var(--radius-lg) 0 0;
+		margin-bottom: 0;
+	}
+
+	/* Body fat input */
+	.bf-input-wrap {
+		display: flex;
+		align-items: baseline;
+		justify-content: center;
+		gap: 0.25rem;
+		padding: 0.5rem 0;
+	}
+	.bf-input {
+		width: 4ch;
+		border: none;
+		background: transparent;
+		font-size: 1.6rem;
+		font-weight: 700;
+		color: var(--color-text-primary);
+		text-align: center;
+		-moz-appearance: textfield;
+		appearance: textfield;
+	}
+	.bf-input::placeholder {
+		color: var(--color-text-tertiary);
+	}
+	.bf-input::-webkit-inner-spin-button,
+	.bf-input::-webkit-outer-spin-button {
+		-webkit-appearance: none;
+		margin: 0;
+	}
+	.bf-input:focus {
+		outline: none;
+	}
+	.bf-unit {
+		font-size: 0.9rem;
+		font-weight: 600;
+		color: var(--color-text-secondary);
+	}
+
+	/* Body part measurements */
+	.bp-group {
+		margin-bottom: 0.6rem;
+	}
+	.bp-group:last-child {
+		margin-bottom: 0;
+	}
+	.bp-group-label {
+		display: block;
+		font-size: 0.65rem;
+		font-weight: 600;
+		text-transform: uppercase;
+		letter-spacing: 0.05em;
+		color: var(--color-text-tertiary);
+		margin-bottom: 0.35rem;
+	}
+	.bp-row {
 		display: flex;
 		gap: 0.5rem;
-		flex-wrap: wrap;
+		margin-bottom: 0.35rem;
 	}
-	.form-group {
+	.bp-field {
 		flex: 1;
 		display: flex;
 		flex-direction: column;
-		gap: 0.2rem;
+		gap: 0.15rem;
-		margin-bottom: 0.4rem;
 	}
-	.form-group label {
+	.bp-field label {
-		font-size: 0.7rem;
+		font-size: 0.65rem;
 		font-weight: 600;
 		color: var(--color-text-secondary);
 		text-transform: uppercase;
 		letter-spacing: 0.04em;
 	}
-	.form-group input {
+	.bp-field input {
 		padding: 0.4rem 0.5rem;
 		border: 1px solid var(--color-border);
-		border-radius: 6px;
+		border-radius: var(--radius-sm);
-		background: var(--color-bg-elevated);
+		background: var(--color-bg-tertiary);
 		color: inherit;
 		font-size: 0.85rem;
+		width: 100%;
+		box-sizing: border-box;
 	}
-	.form-group input:focus {
+	.bp-field input:focus {
 		outline: none;
 		border-color: var(--color-primary);
 	}
-
-	@media (max-width: 480px) {
-		.form-row {
-			flex-direction: column;
-		}
-	}
 </style>