correction syntaxe appliquer promo

Reviewed-on: #9

my-library/src/App.jsx

@@ -13,6 +13,7 @@ import Reservations from './pages/Reservations';
 import Returns from './pages/Returns';
 import Subscription from './pages/Subscription';
 import Loans from './pages/Loans';
+import GroupOrders from './pages/GroupOrders';
 import { useAuth } from './context/AuthContext';
 
 function RequireAuth({ children }) {
@@ -43,6 +44,7 @@ export default function App() {
         <Route path="returns" element={<RequireAdmin><Returns /></RequireAdmin>} />
         <Route path="subscription" element={<RequireAuth><Subscription /></RequireAuth>} />
         <Route path="loans" element={<RequireAuth><Loans /></RequireAuth>} />
+        <Route path="group-orders" element={<RequireAuth><GroupOrders /></RequireAuth>} />
         <Route path="*" element={<NotFound />} />
       </Route>
     </Routes>

my-library/src/components/Navbar.jsx

@@ -22,6 +22,7 @@ export default function Navbar() {
         {user?.role === 'user' && <li><Link to="/reservations">Mes réservations</Link></li>}
         {user?.role === 'user' && <li><Link to="/subscription">Mon abonnement</Link></li>}
         {user?.role === 'user' && <li><Link to="/loans">Mes prêts</Link></li>}
+        {user && <li><Link to="/group-orders">Commandes groupées</Link></li>}
         {user && <li><Link to="/profile">Mon compte</Link></li>}
         {user?.role === 'admin' && <li><Link to="/customers">Clients</Link></li>}
         {user?.role === 'admin' && <li><Link to="/returns">Retours</Link></li>}

my-library/src/context/GroupOrderContext.js

@@ -0,0 +1,59 @@
+import { createContext, useContext, useState } from 'react';
+
+const GroupOrderContext = createContext(null);
+
+export function GroupOrderProvider({ children }) {
+  const [groups, setGroups] = useState(() => {
+    const saved = localStorage.getItem('groupOrders');
+    return saved ? JSON.parse(saved) : [];
+  });
+
+  function createGroup(creatorPhone) {
+    const group = {
+      id: crypto.randomUUID(),
+      creatorPhone,
+      orders: [],
+      status: 'OPEN',
+      createdAt: new Date().toISOString(),
+    };
+    const updated = [...groups, group];
+    setGroups(updated);
+    localStorage.setItem('groupOrders', JSON.stringify(updated));
+    return group;
+  }
+
+  function addOrderToGroup(groupId, phoneNumber, bookId, bookTitle, quantity) {
+    const updated = groups.map(g => {
+      if (g.id !== groupId) return g;
+      const order = {
+        orderId: crypto.randomUUID(),
+        phoneNumber,
+        bookId,
+        bookTitle,
+        quantity: Number(quantity),
+        addedAt: new Date().toISOString(),
+      };
+      return { ...g, orders: [...g.orders, order] };
+    });
+    setGroups(updated);
+    localStorage.setItem('groupOrders', JSON.stringify(updated));
+  }
+
+  function closeGroup(groupId) {
+    const updated = groups.map(g =>
+      g.id === groupId ? { ...g, status: 'CLOSED' } : g
+    );
+    setGroups(updated);
+    localStorage.setItem('groupOrders', JSON.stringify(updated));
+  }
+
+  return (
+    <GroupOrderContext.Provider value={{ groups, createGroup, addOrderToGroup, closeGroup }}>
+      {children}
+    </GroupOrderContext.Provider>
+  );
+}
+
+export function useGroupOrders() {
+  return useContext(GroupOrderContext);
+}

my-library/src/context/LoanContext.js

@@ -8,13 +8,13 @@ export function LoanProvider({ children }) {
     return saved ? JSON.parse(saved) : [];
   });
 
-  function addLoan(book, borrowerPhone, dueDate) {
+  function addLoan(book, borrowerUsername, dueDate) {
     const loan = {
       loanId: crypto.randomUUID(),
       bookId: book.isbn,
       bookTitle: book.title,
       bookAuthor: book.author,
-      borrowerPhone,
+      borrowerUsername,
       dueDate,
       status: 'ACTIVE',
       loanedAt: new Date().toISOString(),

my-library/src/index.js

@@ -7,6 +7,7 @@ import { ReviewProvider } from './context/ReviewContext';
 import { ReturnProvider } from './context/ReturnContext';
 import { SubscriptionProvider } from './context/SubscriptionContext';
 import { LoanProvider } from './context/LoanContext';
+import { GroupOrderProvider } from './context/GroupOrderContext';
 import App from './App';
 import './styles/global.css';
 
@@ -20,7 +21,9 @@ root.render(
             <ReturnProvider>
               <SubscriptionProvider>
                 <LoanProvider>
+                  <GroupOrderProvider>
                     <App />
+                  </GroupOrderProvider>
                 </LoanProvider>
               </SubscriptionProvider>
             </ReturnProvider>

my-library/src/pages/Books.jsx

@@ -29,17 +29,21 @@ export default function Books() {
 
   return (
     <main>
-      <h1>Catalogue</h1>
+      <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', marginBottom: '1rem' }}>
+        <h1 style={{ margin: 0 }}>Catalogue</h1>
         {user?.role === 'admin' && <Link to="/books/new">+ Ajouter un livre</Link>}
-      <ul>
+      </div>
+      <div className="card-grid">
         {books.map((book) => (
-          <li key={book.isbn}>
+          <Link to={`/books/${book.isbn}`} key={book.isbn} style={{ textDecoration: 'none', color: 'inherit' }}>
-            <Link to={`/books/${book.isbn}`}>
+            <div className="card">
-              <strong>{book.title}</strong> - {book.author}
+              <h3>{book.title}</h3>
+              <p>{book.author}</p>
+              <p style={{ marginTop: '0.5rem', fontSize: '0.8rem', color: '#999' }}>ISBN : {book.isbn}</p>
+            </div>
           </Link>
-          </li>
         ))}
-      </ul>
+      </div>
     </main>
   );
 }

my-library/src/pages/GroupOrders.jsx

@@ -0,0 +1,167 @@
+import { useState } from 'react';
+import { useGroupOrders } from '../context/GroupOrderContext';
+import { useAuth } from '../context/AuthContext';
+
+export default function GroupOrders() {
+  const { groups, createGroup, addOrderToGroup, closeGroup } = useGroupOrders();
+  const { user } = useAuth();
+
+  const [creatorPhone, setCreatorPhone] = useState('');
+  const [joinGroupId, setJoinGroupId] = useState('');
+  const [joinForm, setJoinForm] = useState({ phoneNumber: '', bookId: '', bookTitle: '', quantity: 1 });
+  const [joinStatus, setJoinStatus] = useState({});
+  const [createStatus, setCreateStatus] = useState(null);
+
+  function handleCreateGroup(e) {
+    e.preventDefault();
+    const group = createGroup(creatorPhone);
+    setCreateStatus(`Groupe créé ! ID : ${group.id}`);
+    setCreatorPhone('');
+  }
+
+  function handleJoinGroup(e) {
+    e.preventDefault();
+    const group = groups.find(g => g.id === joinGroupId);
+    if (!group) {
+      setJoinStatus(prev => ({ ...prev, [joinGroupId]: 'Groupe introuvable.' }));
+      return;
+    }
+    if (group.status === 'CLOSED') {
+      setJoinStatus(prev => ({ ...prev, [joinGroupId]: 'Ce groupe est fermé.' }));
+      return;
+    }
+    addOrderToGroup(joinGroupId, joinForm.phoneNumber, joinForm.bookId, joinForm.bookTitle, joinForm.quantity);
+    setJoinStatus(prev => ({ ...prev, [joinGroupId]: 'Commande ajoutée au groupe !' }));
+    setJoinForm({ phoneNumber: '', bookId: '', bookTitle: '', quantity: 1 });
+  }
+
+  const openGroups = groups.filter(g => g.status === 'OPEN');
+  const closedGroups = groups.filter(g => g.status === 'CLOSED');
+
+  return (
+    <main>
+      <h1>Commandes groupées</h1>
+
+      <section>
+        <h2>Créer un groupe</h2>
+        <form onSubmit={handleCreateGroup}>
+          <label>
+            Votre téléphone :
+            <input
+              type="tel"
+              value={creatorPhone}
+              onChange={e => setCreatorPhone(e.target.value)}
+              placeholder="0612345678"
+              required
+            />
+          </label>
+          <button type="submit">Créer un groupe</button>
+        </form>
+        {createStatus && <p style={{ color: 'green' }}>{createStatus}</p>}
+      </section>
+
+      <section>
+        <h2>Rejoindre un groupe</h2>
+        <form onSubmit={handleJoinGroup}>
+          <label>
+            ID du groupe :
+            <input
+              value={joinGroupId}
+              onChange={e => setJoinGroupId(e.target.value)}
+              placeholder="Collez l'ID du groupe ici"
+              required
+            />
+          </label>
+          <label>
+            Votre téléphone :
+            <input
+              type="tel"
+              value={joinForm.phoneNumber}
+              onChange={e => setJoinForm(prev => ({ ...prev, phoneNumber: e.target.value }))}
+              placeholder="0612345678"
+              required
+            />
+          </label>
+          <label>
+            ISBN du livre :
+            <input
+              value={joinForm.bookId}
+              onChange={e => setJoinForm(prev => ({ ...prev, bookId: e.target.value }))}
+              placeholder="9782070361038"
+              required
+            />
+          </label>
+          <label>
+            Titre du livre :
+            <input
+              value={joinForm.bookTitle}
+              onChange={e => setJoinForm(prev => ({ ...prev, bookTitle: e.target.value }))}
+              placeholder="Nom du livre"
+              required
+            />
+          </label>
+          <label>
+            Quantité :
+            <input
+              type="number"
+              min="1"
+              value={joinForm.quantity}
+              onChange={e => setJoinForm(prev => ({ ...prev, quantity: e.target.value }))}
+              required
+            />
+          </label>
+          <button type="submit">Rejoindre</button>
+        </form>
+        {joinStatus[joinGroupId] && (
+          <p style={{ color: joinStatus[joinGroupId].includes('introuvable') || joinStatus[joinGroupId].includes('fermé') ? 'red' : 'green' }}>
+            {joinStatus[joinGroupId]}
+          </p>
+        )}
+      </section>
+
+      <section>
+        <h2>Groupes ouverts ({openGroups.length})</h2>
+        {openGroups.length === 0 ? (
+          <p>Aucun groupe ouvert.</p>
+        ) : (
+          <ul>
+            {openGroups.map(g => (
+              <li key={g.id}>
+                <strong>Groupe {g.id.slice(0, 8)}…</strong>
+                <br />
+                Créé par : {g.creatorPhone}
+                <br />
+                Créé le : {new Date(g.createdAt).toLocaleDateString('fr-FR')}
+                <br />
+                Participants : {g.orders.length}
+                {g.orders.length > 0 && (
+                  <ul>
+                    {g.orders.map(o => (
+                      <li key={o.orderId}>
+                        {o.phoneNumber} , {o.bookTitle} (x{o.quantity})
+                      </li>
+                    ))}
+                  </ul>
+                )}
+                <button onClick={() => closeGroup(g.id)}>Fermer le groupe</button>
+              </li>
+            ))}
+          </ul>
+        )}
+      </section>
+
+      {closedGroups.length > 0 && (
+        <section>
+          <h2>Groupes fermés ({closedGroups.length})</h2>
+          <ul>
+            {closedGroups.map(g => (
+              <li key={g.id}>
+                <strong>Groupe {g.id.slice(0, 8)}…</strong> , {g.orders.length} commande(s) , <small>Fermé ✓</small>
+              </li>
+            ))}
+          </ul>
+        </section>
+      )}
+    </main>
+  );
+}

my-library/src/pages/Home.jsx

@@ -1,9 +1,28 @@
 import { Link } from 'react-router-dom';
-import '../styles/home.css';
+import { useAuth } from '../context/AuthContext';
 
 export default function Home() {
+  const { user } = useAuth();
+
   return (
     <main>
+      <h1>Bienvenue sur Biblio</h1>
+      <p>Gérez vos livres, réservations et abonnements depuis une seule interface.</p>
+
+      <section>
+        <h2>Accès rapide</h2>
+        <ul>
+          <li><Link to="/books">📚 Parcourir le catalogue</Link></li>
+          {user?.role === 'user' && <li><Link to="/reservations">🔖 Mes réservations</Link></li>}
+          {user?.role === 'user' && <li><Link to="/loans">📖 Mes prêts</Link></li>}
+          {user?.role === 'user' && <li><Link to="/subscription">⭐ Mon abonnement</Link></li>}
+          {user && <li><Link to="/orders">🛒 Passer une commande</Link></li>}
+          {user && <li><Link to="/group-orders">👥 Commandes groupées</Link></li>}
+          {user?.role === 'admin' && <li><Link to="/customers">👤 Gestion des clients</Link></li>}
+          {user?.role === 'admin' && <li><Link to="/returns">↩️ Retours de livres</Link></li>}
+          {!user && <li><Link to="/login">Connexion</Link></li>}
+        </ul>
+      </section>
     </main>
   );
 }

my-library/src/pages/Loans.jsx

@@ -20,7 +20,7 @@ export default function Loans() {
               <li key={l.loanId}>
                 <strong>{l.bookTitle}</strong> — {l.bookAuthor}
                 <br />
-                Prêté à : {l.borrowerPhone}
+                Emprunteur : {l.borrowerUsername}
                 <br />
                 À rendre avant le : {new Date(l.dueDate).toLocaleDateString('fr-FR')}
                 <br />
@@ -41,7 +41,7 @@ export default function Loans() {
               <li key={l.loanId}>
                 <strong>{l.bookTitle}</strong> — {l.bookAuthor}
                 <br />
-                Prêté à : {l.borrowerPhone}
+                Emprunteur : {l.borrowerUsername}
                 <br />
                 <small>Rendu ✓</small>
               </li>

my-library/src/pages/Orders.jsx

@@ -1,11 +1,17 @@
 import { useState } from 'react';
 import { createOrder } from '../api/orders';
+import { getBookById } from '../api/books';
 
 export default function Orders() {
   const [customerId, setCustomerId] = useState('');
   const [paymentMethod, setPaymentMethod] = useState('CREDIT_CARD');
   const [address, setAddress] = useState({ street: '', city: '', postalCode: '', country: '' });
   const [lines, setLines] = useState([{ bookId: '', quantity: 1 }]);
+  const [promoCode, setPromoCode] = useState('');
+  const [promoValid, setPromoValid] = useState(true);
+  const [estimate, setEstimate] = useState(null);
+  const [estimating, setEstimating] = useState(false);
+  const [estimateError, setEstimateError] = useState(null);
   const [message, setMessage] = useState(null);
   const [submitting, setSubmitting] = useState(false);
 
@@ -17,13 +23,66 @@ export default function Orders() {
   function handleLineChange(index, field, value) {
     setLines((prev) => prev.map((line, i) => (i === index ? { ...line, [field]: value } : line)));
   }
+
   function addLine() {
     setLines((prev) => [...prev, { bookId: '', quantity: 1 }]);
   }
+
   function removeLine(index) {
     setLines((prev) => prev.filter((_, i) => i !== index));
   }
 
+  function validatePromo(code) {
+    if (!code) return true;
+    return /^PROMO\d{1,2}$/.test(code);
+  }
+
+  function handlePromoChange(e) {
+    const code = e.target.value;
+    setPromoCode(code);
+    setPromoValid(validatePromo(code));
+  }
+
+  async function handleEstimate() {
+    setEstimating(true);
+    setEstimate(null);
+    setEstimateError(null);
+    try {
+      const ids = lines.map((l) => Number(l.bookId)).filter((n) => !isNaN(n) && n > 0);
+      if (ids.length === 0) {
+        setEstimateError('Aucun ISBN valide.');
+        return;
+      }
+      const unique = [...new Set(ids)];
+      const responses = await Promise.all(unique.map((id) => getBookById(id).then((r) => r.data)));
+      const priceMap = new Map();
+      unique.forEach((id, idx) => priceMap.set(id, responses[idx].prix ?? responses[idx].price ?? 0));
+
+      let total = 0;
+      for (const l of lines) {
+        const id = Number(l.bookId);
+        const qty = Number(l.quantity) || 0;
+        total += (priceMap.get(id) || 0) * qty;
+      }
+
+      let discounted = total;
+      if (promoCode) {
+        const m = promoCode.match(/^PROMO(\d{1,2})$/);
+        if (m) {
+          const pct = Math.max(0, Math.min(100, Number(m[1])));
+          discounted = total * (1 - pct / 100);
+        }
+      }
+
+      setEstimate({ total, discounted });
+    } catch (err) {
+      setEstimateError("Erreur lors de l'estimation.");
+      console.error(err);
+    } finally {
+      setEstimating(false);
+    }
+  }
+
   function handleSubmit(e) {
     e.preventDefault();
     setSubmitting(true);
@@ -37,10 +96,11 @@ export default function Orders() {
         bookId: Number(line.bookId),
         quantity: Number(line.quantity),
       })),
+      ...(promoCode ? { promoCode } : {}),
     };
 
     createOrder(payload)
-      .then((response) => setMessage('Commande créée'))
+      .then(() => setMessage('Commande créée avec succès !'))
       .catch((error) => {
         console.error(error);
         setMessage(error.response?.data?.message || 'Erreur lors de la commande.');
@@ -58,10 +118,10 @@ export default function Orders() {
 
         <h2>Livres</h2>
         {lines.map((line, index) => (
-          <div key={index}>
+          <div key={index} style={{ display: 'flex', gap: '0.5rem', marginBottom: '0.5rem' }}>
             <input type="number" placeholder="ISBN du livre" value={line.bookId}
               onChange={(e) => handleLineChange(index, 'bookId', e.target.value)} required />
-            <input type="number" placeholder="Quantité" value={line.quantity}
+            <input type="number" placeholder="Quantité" min="1" value={line.quantity}
               onChange={(e) => handleLineChange(index, 'quantity', e.target.value)} required />
             {lines.length > 1 && (
               <button type="button" onClick={() => removeLine(index)}>Retirer</button>
@@ -77,15 +137,35 @@ export default function Orders() {
         <input name="country" placeholder="Pays" value={address.country} onChange={handleAddressChange} required />
 
         <h2>Paiement</h2>
+        <label>Code promo (optionnel)
+          <input value={promoCode} onChange={handlePromoChange} placeholder="ex: PROMO10" />
+        </label>
+        {!promoValid && <p style={{ color: 'red' }}>Format invalide (ex: PROMO10)</p>}
+
         <select value={paymentMethod} onChange={(e) => setPaymentMethod(e.target.value)}>
           <option value="CREDIT_CARD">Carte bancaire</option>
         </select>
 
-        <button type="submit" disabled={submitting}>
+        <div>
+          <button type="button" onClick={handleEstimate} disabled={estimating}>
+            {estimating ? 'Estimation…' : 'Estimer le total'}
+          </button>
+          {estimateError && <p style={{ color: 'red' }}>{estimateError}</p>}
+          {estimate && (
+            <div>
+              <p>Total estimé : {estimate.total.toFixed(2)} €</p>
+              {estimate.total !== estimate.discounted && (
+                <p>Après promo : <strong>{estimate.discounted.toFixed(2)} €</strong></p>
+              )}
+            </div>
+          )}
+        </div>
+
+        <button type="submit" disabled={submitting || !promoValid}>
           {submitting ? 'Envoi…' : 'Valider la commande'}
         </button>
       </form>
-      {message && <p>{message}</p>}
+      {message && <p style={{ color: message.includes('succès') ? 'green' : 'red' }}>{message}</p>}
     </main>
   );
 }

my-library/src/pages/Profile.jsx

@@ -1,3 +1,45 @@
+import { useAuth } from '../context/AuthContext';
+import { useReservations } from '../context/ReservationContext';
+import { useLoans } from '../context/LoanContext';
+import { useSubscription } from '../context/SubscriptionContext';
+
 export default function Profile() {
-  return <main><h1>Mon compte</h1></main>;
+  const { user } = useAuth();
+  const { reservations } = useReservations();
+  const { loans } = useLoans();
+  const { subscription } = useSubscription();
+
+  const activeReservations = reservations.filter(r => r.status !== 'CANCELLED');
+  const activeLoans = loans.filter(l => l.status === 'ACTIVE');
+
+  return (
+    <main>
+      <h1>Mon compte</h1>
+
+      <section>
+        <h2>Informations</h2>
+        <p><strong>Nom d'utilisateur :</strong> {user?.username}</p>
+        <p><strong>Rôle :</strong> {user?.role === 'admin' ? 'Administrateur' : 'Utilisateur'}</p>
+      </section>
+
+      {user?.role === 'user' && (
+        <>
+          <section>
+            <h2>Abonnement</h2>
+            {subscription ? (
+              <p><strong>Plan actif :</strong> {subscription.planName}</p>
+            ) : (
+              <p>Aucun abonnement actif.</p>
+            )}
+          </section>
+
+          <section>
+            <h2>Activité</h2>
+            <p>Réservations en cours : <strong>{activeReservations.length}</strong></p>
+            <p>Prêts en cours : <strong>{activeLoans.length}</strong></p>
+          </section>
+        </>
+      )}
+    </main>
+  );
 }

my-library/src/pages/Reservations.jsx

@@ -21,7 +21,7 @@ export default function Reservations() {
     const form = loanForms[reservation.reservationId] || {};
     addLoan(
       { isbn: reservation.bookId, title: reservation.bookTitle, author: reservation.bookAuthor },
-      form.borrowerPhone,
+      form.borrowerUsername,
       form.dueDate
     );
     setLoanStatuses(prev => ({ ...prev, [reservation.reservationId]: 'Prêt enregistré avec succès !' }));
@@ -58,12 +58,12 @@ export default function Reservations() {
               <summary>Prêter ce livre à un autre lecteur</summary>
               <form onSubmit={e => handleLoan(e, r)}>
                 <label>
-                  Téléphone de l'emprunteur :
+                  Identifiant de l'emprunteur :
                   <input
-                    type="tel"
+                    type="text"
-                    value={loanForms[r.reservationId]?.borrowerPhone || ''}
+                    value={loanForms[r.reservationId]?.borrowerUsername || ''}
-                    onChange={e => handleLoanChange(r.reservationId, 'borrowerPhone', e.target.value)}
+                    onChange={e => handleLoanChange(r.reservationId, 'borrowerUsername', e.target.value)}
-                    placeholder="0612345678"
+                    placeholder="ex: alice"
                     required
                   />
                 </label>

my-library/src/styles/global.css

@@ -0,0 +1,196 @@
+*, *::before, *::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family: system-ui, sans-serif;
+  font-size: 15px;
+  line-height: 1.6;
+  color: #222;
+  background: #f7f7f7;
+}
+
+main {
+  max-width: 860px;
+  margin: 2rem auto;
+  padding: 0 1.25rem;
+}
+
+h1 {
+  font-size: 1.6rem;
+  font-weight: 600;
+  margin-bottom: 1.25rem;
+  color: #111;
+}
+
+h2 {
+  font-size: 1.15rem;
+  font-weight: 600;
+  margin: 1.5rem 0 0.75rem;
+  color: #333;
+}
+
+p {
+  margin-bottom: 0.75rem;
+}
+
+a {
+  color: #2563eb;
+  text-decoration: none;
+}
+
+a:hover {
+  text-decoration: underline;
+}
+
+ul {
+  list-style: none;
+  padding: 0;
+}
+
+li {
+  padding: 0.75rem 0;
+  border-bottom: 1px solid #e5e5e5;
+  line-height: 1.7;
+}
+
+li:last-child {
+  border-bottom: none;
+}
+
+/* Forms */
+
+form {
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+  max-width: 480px;
+}
+
+label {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25rem;
+  font-size: 0.9rem;
+  color: #444;
+}
+
+input, select, textarea {
+  padding: 0.45rem 0.65rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 0.95rem;
+  font-family: inherit;
+  background: #fff;
+  width: 100%;
+}
+
+input:focus, select:focus, textarea:focus {
+  outline: none;
+  border-color: #2563eb;
+}
+
+/* Buttons */
+
+button {
+  display: inline-block;
+  padding: 0.45rem 1rem;
+  font-size: 0.9rem;
+  font-family: inherit;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  background: #fff;
+  cursor: pointer;
+  color: #222;
+}
+
+button:hover {
+  background: #f0f0f0;
+}
+
+button[type="submit"],
+button.primary {
+  background: #2563eb;
+  color: #fff;
+  border-color: #2563eb;
+}
+
+button[type="submit"]:hover,
+button.primary:hover {
+  background: #1d4ed8;
+}
+
+button:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+/* Sections */
+
+section {
+  margin-bottom: 2rem;
+}
+
+/* Details / summary */
+
+details {
+  margin-top: 0.5rem;
+}
+
+summary {
+  cursor: pointer;
+  color: #2563eb;
+  font-size: 0.9rem;
+}
+
+summary:hover {
+  text-decoration: underline;
+}
+
+details form {
+  margin-top: 0.75rem;
+  padding: 0.75rem;
+  background: #fff;
+  border: 1px solid #e5e5e5;
+  border-radius: 4px;
+}
+
+/* Status messages */
+
+.msg-success {
+  color: #15803d;
+}
+
+.msg-error {
+  color: #dc2626;
+}
+
+/* Cards (book list etc.) */
+
+.card-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
+  gap: 1rem;
+  margin-top: 1rem;
+}
+
+.card {
+  background: #fff;
+  border: 1px solid #e5e5e5;
+  border-radius: 6px;
+  padding: 1rem;
+}
+
+.card h3 {
+  font-size: 1rem;
+  font-weight: 600;
+  margin-bottom: 0.25rem;
+}
+
+.card p {
+  font-size: 0.875rem;
+  color: #555;
+  margin: 0;
+}

my-library/src/styles/navbar.css

@@ -0,0 +1,56 @@
+.navbar {
+  display: flex;
+  align-items: center;
+  gap: 1.5rem;
+  padding: 0 1.25rem;
+  height: 52px;
+  background: #fff;
+  border-bottom: 1px solid #e5e5e5;
+  position: sticky;
+  top: 0;
+  z-index: 100;
+}
+
+.navbar__logo {
+  font-weight: 700;
+  font-size: 1.1rem;
+  color: #111;
+  text-decoration: none;
+  margin-right: 0.5rem;
+}
+
+.navbar__links {
+  display: flex;
+  align-items: center;
+  gap: 0.25rem;
+  list-style: none;
+  flex: 1;
+  flex-wrap: wrap;
+}
+
+.navbar__links a {
+  padding: 0.3rem 0.6rem;
+  font-size: 0.875rem;
+  color: #444;
+  text-decoration: none;
+  border-radius: 4px;
+}
+
+.navbar__links a:hover {
+  background: #f0f0f0;
+  color: #111;
+}
+
+.navbar__actions {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  font-size: 0.875rem;
+  color: #555;
+  white-space: nowrap;
+}
+
+.navbar__actions button {
+  padding: 0.3rem 0.75rem;
+  font-size: 0.85rem;
+}