/* ==========================================================================
   BroBook — feuille de style principale
   Basée sur la charte graphique : bleu profond, rose poudré, crème,
   typographie ronde (Fredoka / Nunito) et motif "gribouillis".
   ========================================================================== */

/* ===== 1. VARIABLES DE THÈME ============================================== */
:root {
    --font-display: "Fredoka", "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-sans: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    /* Couleurs de marque (charte) */
    --brand-blue: #101a9e;
    --brand-blue-2: #2b2fb5;
    --brand-pink: #f5cee1;
    --brand-pink-2: #ecaecf;
    --brand-cream: #f8f5e4;

    /* Rôles — thème clair */
    --primary: var(--brand-blue);
    --primary-hover: #0a1170;
    --primary-soft: #e6e7fb;

    --success: #1f9d63;
    --danger: #e0533d;
    --warning: #e0a52e;

    --bg: #faf8ee;
    --surface: #ffffff;
    --surface-2: #f6f3e6;
    --surface-hover: #f0eddd;
    --text: #14173f;
    --text-muted: #5c5f83;
    --border: #e8e4d2;
    --border-strong: #dad5be;

    /* Formes rondes de la charte */
    --radius: 18px;
    --radius-sm: 12px;
    --radius-pill: 999px;

    --shadow-sm: 0 1px 2px rgba(16, 22, 63, .05), 0 3px 10px rgba(16, 22, 63, .06);
    --shadow: 0 4px 12px rgba(16, 22, 63, .08), 0 16px 34px rgba(16, 22, 63, .12);

    --transition: 160ms ease;

    /* Motif gribouillis (rose sur fond transparent) */
    --doodle: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22150%22%20height%3D%22150%22%20viewBox%3D%220%200%20150%20150%22%3E%3Cg%20fill%3D%22none%22%20stroke%3D%22%23f5cee1%22%20stroke-width%3D%225%22%20stroke-linecap%3D%22round%22%3E%3Cpath%20d%3D%22M12%2028c9-15%2026-15%2035%200s26%2015%2035%200%22%2F%3E%3Cpath%20d%3D%22M100%2012c15%202%2019%2022%204%2026s-17-24%200-22%22%2F%3E%3Cpath%20d%3D%22M20%2076c11%2017%2032%2017%2043%200%22%2F%3E%3Cpath%20d%3D%22M116%2062c-5%2013%206%2020%2015%2013%22%2F%3E%3Cpath%20d%3D%22M128%2098c-17%200-17%2024%200%2024s0-24-17-15%22%2F%3E%3Cpath%20d%3D%22M22%20118c11-13%2028-13%2039%200%22%2F%3E%3Cpath%20d%3D%22M76%20110c7%209%202%2022-7%2024%22%2F%3E%3Cpath%20d%3D%22M92%2078c10-6%2022%202%2020%2014%22%2F%3E%3C%2Fg%3E%3C%2Fsvg%3E");
}

body.dark,
html.dark-preload body {
    --primary: #7d84ff;
    --primary-hover: #9aa0ff;
    --primary-soft: #232a52;

    --success: #35c07e;
    --danger: #f0715d;
    --warning: #edb44e;

    --bg: #0d0f1c;
    --surface: #161a2e;
    --surface-2: #1e2338;
    --surface-hover: #262c44;
    --text: #ecebf5;
    --text-muted: #a2a5c4;
    --border: #2c3350;
    --border-strong: #3c4468;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35);
    --shadow: 0 16px 36px rgba(0, 0, 0, .5);
}

/* ===== 2. BASE ========================================================= */
* { box-sizing: border-box; }

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: .96rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition), color var(--transition);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--text);
    font-weight: 600;
    letter-spacing: 0;
}
h1 { font-size: 1.8rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.2rem; }
h5 { font-size: 1.05rem; font-weight: 600; }
h6 { font-weight: 700; }

hr { border-color: var(--border); opacity: 1; }

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}
main p a, main li a, .prose a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
main p a:hover, main li a:hover, .prose a:hover { color: var(--primary-hover); }

::selection { background: var(--primary); color: #fff; }

* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--radius-pill);
    border: 3px solid transparent;
    background-clip: content-box;
}

/* Utilitaire : fond bleu + motif gribouillis */
.doodle-bg {
    background-color: var(--brand-blue);
    background-image: var(--doodle);
    background-size: 150px 150px;
    color: #fff;
}

.brand-font { font-family: var(--font-display); }
.tagline {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: .18em;
    font-size: .68rem;
    font-weight: 500;
}

/* Logo BroBook (wordmark de la charte) */
.brand-lockup {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: .2rem;
    line-height: 1;
}
.brand-mark {
    display: block;
    height: 1.6rem;
    width: auto;
    color: var(--primary);
}
.brand-lockup .tagline { color: var(--text-muted); }

/* ===== 3. NAVBAR ===================================================== */
.navbar {
    background-color: var(--surface) !important;
    border-bottom: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1030;
    padding-top: .55rem;
    padding-bottom: .55rem;
}
.navbar .navbar-brand { padding-top: 0; padding-bottom: 0; }
.navbar .navbar-brand .brand-mark { height: 1.5rem; }
.navbar .navbar-brand:hover .brand-mark { color: var(--primary-hover); }
.navbar-user { color: var(--text-muted); font-size: .9rem; }
.navbar-user strong { color: var(--text); }

/* ===== 4. BOUTONS ================================================== */
.btn {
    --bs-btn-focus-shadow-rgb: 16, 26, 158;
    font-family: var(--font-sans);
    border-radius: var(--radius-sm);
    font-weight: 700;
    padding: .5rem 1.1rem;
    transition: transform var(--transition), background-color var(--transition),
        border-color var(--transition), color var(--transition), box-shadow var(--transition), filter var(--transition);
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: .35rem .75rem; border-radius: 9px; font-size: .82rem; }
.btn-lg { padding: .7rem 1.5rem; border-radius: var(--radius-sm); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 .2rem var(--primary-soft); }

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #fff;
}

.btn-success { background-color: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover, .btn-success:focus { background-color: var(--success); border-color: var(--success); filter: brightness(.93); color: #fff; }

.btn-danger { background-color: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover, .btn-danger:focus { background-color: var(--danger); border-color: var(--danger); filter: brightness(.93); color: #fff; }

.btn-warning { background-color: var(--warning); border-color: var(--warning); color: #3a2c07; }

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--border-strong);
    background-color: transparent;
}
.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--text-muted);
    border-color: var(--border-strong);
    background-color: transparent;
}
.btn-outline-secondary:hover, .btn-outline-secondary:focus {
    background-color: var(--surface-hover);
    border-color: var(--border-strong);
    color: var(--text);
}

.btn-outline-danger { color: var(--danger); border-color: var(--border-strong); background-color: transparent; }
.btn-outline-danger:hover, .btn-outline-danger:focus { background-color: var(--danger); border-color: var(--danger); color: #fff; }

/* Bouton retour flottant */
.back-global {
    position: fixed;
    top: 72px;
    left: 16px;
    z-index: 1020;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-size: 1.1rem;
    border-radius: 50%;
    background-color: var(--surface);
    box-shadow: var(--shadow-sm);
}

/* ===== 5. CARTES ================================================= */
.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    box-shadow: var(--shadow-sm);
}
.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-weight: 700;
    padding: .9rem 1.1rem;
    border-radius: var(--radius) var(--radius) 0 0 !important;
}
.card-header:hover { background-color: var(--surface-2); }
.card-body { padding: 1.15rem; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow) !important; }

/* ===== 6. FORMULAIRES ========================================== */
.form-control,
.form-select,
textarea.form-control {
    background-color: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: .55rem .85rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control::placeholder { color: var(--text-muted); opacity: .8; }
.form-control:focus, .form-select:focus {
    background-color: var(--surface);
    border-color: var(--primary);
    box-shadow: 0 0 0 .2rem var(--primary-soft);
    color: var(--text);
}
.form-label, .form-check-label {
    color: var(--text);
    font-weight: 700;
    font-size: .85rem;
    margin-bottom: .3rem;
}
.form-control-plaintext { color: var(--text); }
.form-text, .text-muted { color: var(--text-muted) !important; }

.input-group .btn { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.input-group .form-control { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }

form p { margin-bottom: 1rem; }
form p label { display: block; font-weight: 700; font-size: .85rem; margin-bottom: .3rem; }
.form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }
.form-check-input:focus { border-color: var(--primary); box-shadow: 0 0 0 .2rem var(--primary-soft); }
.helptext { color: var(--text-muted); font-size: .8rem; }
.errorlist { color: var(--danger); list-style: none; padding: 0; font-size: .82rem; }

/* ===== 7. LISTES ============================================= */
.list-group-item {
    background-color: var(--surface);
    border-color: var(--border);
    color: var(--text);
    padding: .75rem 1rem;
}
.list-group-flush > .list-group-item { border-left: 0; border-right: 0; }

/* ===== 8. BADGES =========================================== */
.badge {
    font-family: var(--font-sans);
    font-weight: 700;
    padding: .38em .65em;
    border-radius: var(--radius-pill);
}
.badge.bg-primary   { background-color: var(--primary) !important; }
.badge.bg-success   { background-color: var(--success) !important; }
.badge.bg-danger    { background-color: var(--danger) !important; }
.badge.bg-warning   { background-color: var(--warning) !important; color: #3a2c07; }
.badge.bg-secondary { background-color: var(--brand-pink) !important; color: var(--brand-blue); }

/* ===== 9. ALERTES ======================================== */
.alert { border-radius: var(--radius-sm); border: 1px solid transparent; font-size: .9rem; }
.alert-success { background-color: rgba(31, 157, 99, .12); border-color: rgba(31, 157, 99, .3); color: var(--success); }
.alert-danger  { background-color: rgba(224, 83, 61, .12); border-color: rgba(224, 83, 61, .3); color: var(--danger); }
.alert-info    { background-color: var(--brand-pink); border-color: var(--brand-pink-2); color: var(--brand-blue); }
body.dark .alert-info { background-color: var(--primary-soft); border-color: transparent; color: var(--text); }

/* ===== 10. MODALES / OFFCANVAS ======================== */
.modal-content, .offcanvas {
    background-color: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.modal-header, .offcanvas-header { border-bottom: 1px solid var(--border); }
.modal-footer { border-top: 1px solid var(--border); }
.offcanvas-title { font-family: var(--font-display); color: var(--primary); }
body.dark .btn-close { filter: invert(1) grayscale(1) brightness(1.6); }

/* ===== 11. SIDEBAR (accueil) ======================== */
.sidebar-desktop {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 84px;
}
.sidebar-desktop .btn { text-align: left; }

/* Bandeau d'accueil */
.home-hero {
    border-radius: var(--radius);
    padding: 26px 28px;
    margin-bottom: 1.5rem;
    background-color: var(--brand-blue);
    background-image: var(--doodle);
    background-size: 150px 150px;
    color: #fff;
}
.home-hero h1 { color: #fff; margin: .6rem 0 0; font-size: 1.6rem; }
.home-hero .brand-mark { color: var(--brand-pink); height: 2rem; }
.home-hero .tagline { color: var(--brand-pink); margin-top: .35rem; display: block; }

/* ===== 12. GRILLE DE LIVRES ======================= */
.book-link {
    display: block;
    border-radius: var(--radius);
    color: inherit;
    transition: transform var(--transition);
}
.book-link:hover { transform: translateY(-4px); }

.book-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
    height: 100%;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.book-link:hover .book-card, .book-card:hover {
    border-color: var(--brand-pink-2);
    box-shadow: var(--shadow);
}
.book-cover-wrapper {
    width: 100%;
    aspect-ratio: 2 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.book-cover-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}
.book-link:hover .book-cover-wrapper img { transform: scale(1.04); }
.book-title {
    font-weight: 700;
    font-size: .85rem;
    line-height: 1.35;
    margin-top: .5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-detail-container {
    max-width: 900px;
    margin: auto;
    padding: 26px;
    border-radius: var(--radius);
    background-color: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    color: var(--text);
}
.book-cover {
    max-width: 240px;
    width: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}
.no-cover {
    aspect-ratio: 2 / 3;
    max-width: 240px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    font-size: .85rem;
}

/* ===== 13. CARTE FORMULAIRE / AUTH ================ */
.form-container {
    max-width: 640px;
    margin: auto;
    padding: 26px;
    border-radius: var(--radius);
    background-color: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: relative;
}

/* Pages de connexion / inscription : fond bleu + gribouillis */
.auth-wrap {
    min-height: calc(100vh - 160px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: -1.5rem -12px 0;
    padding: 3rem 1rem;
    background-color: var(--brand-blue);
    background-image: var(--doodle);
    background-size: 150px 150px;
}
.auth-card {
    width: 100%;
    max-width: 420px;
    padding: 32px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.auth-wrap .auth-card { margin: 0; }
.auth-card h3, .auth-card h4 { text-align: center; margin-bottom: 1.3rem; font-family: var(--font-display); color: var(--primary); }
.auth-card .brand-lockup {
    align-items: center;
    width: 100%;
    margin-bottom: 1.4rem;
    gap: .35rem;
}
.auth-card .brand-mark { height: 2.3rem; color: var(--primary); }
.auth-card .brand-lockup .tagline { color: var(--text-muted); }

/* Autocomplétion Google Books */
#results {
    position: absolute;
    width: calc(100% - 52px);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    max-height: 320px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    box-shadow: var(--shadow);
}
.result {
    padding: 10px;
    cursor: pointer;
    display: flex;
    gap: 10px;
    align-items: center;
    border-bottom: 1px solid var(--border);
}
.result:last-child { border-bottom: 0; }
.result:hover { background: var(--surface-hover); }
.result img { width: 42px; border-radius: 4px; }
#coverPreview img { max-width: 150px; border-radius: var(--radius-sm); }

/* ===== 14. AMIS ================================= */
.friend-card {
    background-color: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition), border-color var(--transition);
}
.friend-card:hover { background-color: var(--surface-hover); border-color: var(--brand-pink-2); }
.loan-box { background-color: var(--surface-2); border-color: var(--border) !important; border-radius: var(--radius-sm); }

/* ===== 15. PIED DE PAGE ======================== */
footer {
    background-color: var(--surface);
    color: var(--text-muted);
    border-top: 2px solid var(--border);
}
footer .brand-lockup { align-items: center; }
footer .brand-mark { height: 1.5rem; }
footer .tagline { color: var(--primary); display: block; margin-bottom: .4rem; }
footer a { color: var(--text-muted); }
footer a:hover { color: var(--primary); }
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--surface-2);
    color: var(--text-muted);
    transition: background-color var(--transition), color var(--transition), transform var(--transition);
}
.social-icon:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ===== 16. INTERRUPTEUR (paramètres) ========== */
.switch { position: relative; display: inline-block; width: 46px; height: 26px; flex: none; }
.switch input { display: none; }
.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: var(--border-strong);
    border-radius: var(--radius-pill);
    transition: background-color var(--transition);
}
.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    top: 3px;
    background-color: #fff;
    border-radius: 50%;
    transition: transform var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, .3);
}
input:checked + .slider { background-color: var(--primary); }
input:checked + .slider:before { transform: translateX(20px); }

/* Cartes de club */
.club-card { transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.club-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--brand-pink-2); }

/* ===== 16.5 AVATARS ============================ */
.avatar-img {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-pill);
    object-fit: cover;
    border: 1px solid var(--border);
    vertical-align: middle;
}

.avatar-choice {
    cursor: pointer;
    display: inline-block;
    border-radius: var(--radius-pill);
    padding: 3px;
    border: 2px solid transparent;
    transition: border-color var(--transition);
}

.avatar-choice input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.avatar-choice .avatar-option {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-pill);
    display: block;
}

.avatar-choice input:checked + .avatar-option {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* ===== 17. DIVERS ============================ */
.display-6 { font-family: var(--font-display); font-weight: 600; color: var(--text); }
#arrowIcon { transition: transform .3s ease; }

@media (max-width: 575.98px) {
    h1 { font-size: 1.45rem; }
    .back-global { top: 66px; left: 10px; }
    .card-body { padding: .95rem; }
    .home-hero { padding: 20px; }
    .auth-wrap { margin-left: -12px; margin-right: -12px; padding: 2rem .75rem; }
}