/*
 * iDevArt Portfolio — CSS Frontend
 * Design aligné : Litho Branding Agency / iDevArt design system
 * Bleu #1296CC · Pink #F621F1 · Dark #1a1f2e
 * Gradient Litho : violet→rouge→rose→violet
 */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400;600;700&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ============================================================
   VARIABLES
   ============================================================ */
.idpf-wrapper {
    --id-blue:       #1296CC;
    --id-blue-dark:  #0d7aa8;
    --id-blue-light: rgba(18,150,204,0.08);
    --id-pink:       #F621F1;
    --id-dark:       #1a1f2e;
    --id-text:       #2c3e50;
    --id-muted:      #5a6a7a;
    --id-border:     #e8edf2;
    --id-bg:         #f7f9fc;
    --id-white:      #ffffff;
    --id-radius:     14px;
    --id-radius-sm:  8px;
    --id-transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --litho-grad:    linear-gradient(90deg, #4b065b 0%, #4b065b 20%, #ff5751 40%, #de3486 60%, #480095 80%, #380075 100%);
    --font-display:  'Cormorant Garamond', Georgia, serif;
    --font-body:     'DM Sans', sans-serif;
    font-family: var(--font-body);
    color: var(--id-text);
}

/* ============================================================
   EN-TÊTE DE SECTION
   ============================================================ */
.idpf-header {
    text-align: center;
    margin-bottom: 56px;
}

.idpf-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--id-blue-light);
    border: 1px solid rgba(18,150,204,0.25);
    color: var(--id-blue);
    padding: 5px 16px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.idpf-section-title {
    font-family: var(--font-display);
    font-size: clamp(30px, 4vw, 48px);
    font-weight: 700;
    color: var(--id-text);
    margin: 0 0 14px;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.idpf-section-subtitle {
    font-size: 16px;
    color: var(--id-muted);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Trait gradient Litho sous le header */
.idpf-header::after {
    content: '';
    display: block;
    width: 72px;
    height: 3px;
    background: var(--litho-grad);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* ============================================================
   FILTRES — BASE COMMUNE
   ============================================================ */
.idpf-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 44px;
}

.idpf-filter-btn {
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    transition: var(--id-transition);
    outline: none;
    position: relative;
}
.idpf-filter-btn:focus-visible { outline: 2px solid var(--id-blue); outline-offset: 3px; }

/* ---- Style 1 : Pills gradient ---- */
.idpf-filter-style1 .idpf-filter-btn {
    padding: 9px 22px;
    border-radius: 50px;
    background: var(--id-bg);
    border: 1.5px solid var(--id-border);
    color: var(--id-muted);
    letter-spacing: 0.03em;
}
.idpf-filter-style1 .idpf-filter-btn:hover {
    background: var(--id-blue-light);
    border-color: rgba(18,150,204,0.3);
    color: var(--id-blue);
}
.idpf-filter-style1 .idpf-filter-btn.is-active {
    background: linear-gradient(135deg, var(--id-blue), var(--id-blue-dark));
    border-color: transparent;
    color: var(--id-white);
    box-shadow: 0 4px 16px rgba(18,150,204,0.35);
}

/* ---- Style 2 : Underline animé ---- */
.idpf-filter-style2 .idpf-filters {
    border-bottom: 1.5px solid var(--id-border);
    padding-bottom: 0;
    gap: 0;
    margin-bottom: 44px;
}
.idpf-filter-style2 .idpf-filter-btn {
    padding: 12px 24px;
    color: var(--id-muted);
    border-radius: 0;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 600;
}
.idpf-filter-style2 .idpf-filter-btn::after {
    content: '';
    position: absolute;
    bottom: -1.5px;
    left: 0; right: 0;
    height: 3px;
    background: var(--litho-grad);
    transform: scaleX(0);
    transition: transform .3s ease;
}
.idpf-filter-style2 .idpf-filter-btn:hover { color: var(--id-blue); }
.idpf-filter-style2 .idpf-filter-btn:hover::after { transform: scaleX(0.5); }
.idpf-filter-style2 .idpf-filter-btn.is-active { color: var(--id-blue); }
.idpf-filter-style2 .idpf-filter-btn.is-active::after { transform: scaleX(1); }

/* ---- Style 3 : Dark tags terminal ---- */
.idpf-filter-style3 .idpf-filter-btn {
    padding: 8px 18px;
    background: var(--id-dark);
    color: rgba(255,255,255,0.5);
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    letter-spacing: 0.06em;
    border: 1px solid rgba(255,255,255,0.08);
}
.idpf-filter-style3 .idpf-filter-btn::before { content: '# '; color: rgba(255,255,255,0.2); }
.idpf-filter-style3 .idpf-filter-btn:hover {
    background: rgba(18,150,204,0.15);
    border-color: rgba(18,150,204,0.4);
    color: var(--id-blue);
}
.idpf-filter-style3 .idpf-filter-btn.is-active {
    background: var(--id-blue);
    color: var(--id-white);
    border-color: var(--id-blue);
    box-shadow: 0 0 16px rgba(18,150,204,0.4);
}
.idpf-filter-style3 .idpf-filter-btn.is-active::before { content: '> '; color: rgba(255,255,255,0.6); }

/* ============================================================
   GRILLE ISOTOPE — fitRows layout
   ============================================================ */
.idpf-grid {
    margin: 0 -12px;
}

/* Chaque item — float pour Isotope fitRows */
.idpf-item {
    padding: 0 12px;
    margin-bottom: 24px;
    float: left; /* requis pour Isotope fitRows */
    box-sizing: border-box;
}

/* Colonnes */
.idpf-cols-2 .idpf-item { width: 50%; }
.idpf-cols-3 .idpf-item { width: 33.3333%; }
.idpf-cols-4 .idpf-item { width: 25%; }

/* Projet vedette — visuellement distinct mais reste dans la grille Isotope */
.idpf-item--featured { position: relative; }

/* ============================================================
   CARTE
   ============================================================ */
.idpf-card {
    background: var(--id-white);
    border-radius: var(--id-radius);
    border: 1.5px solid var(--id-border);
    overflow: hidden;
    position: relative;
    transition: var(--id-transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Trait gradient Litho top — déploie au hover */
.idpf-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--litho-grad);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .45s cubic-bezier(0.4,0,0.2,1);
    z-index: 2;
}
.idpf-item:hover .idpf-card {
    border-color: rgba(18,150,204,0.25);
    box-shadow: 0 12px 40px rgba(18,150,204,0.14);
    transform: translateY(-5px);
}
.idpf-item:hover .idpf-card::before { transform: scaleX(1); }

/* Halo bleu hover */
.idpf-card::after {
    content: '';
    position: absolute;
    top: -50px; right: -50px;
    width: 160px; height: 160px;
    background: radial-gradient(circle, rgba(18,150,204,0.07) 0%, transparent 70%);
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
}
.idpf-item:hover .idpf-card::after { opacity: 1; }

/* Badge vedette */
.idpf-featured-badge {
    position: absolute;
    top: 14px; left: 14px;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: linear-gradient(135deg, var(--id-blue), var(--id-blue-dark));
    color: var(--id-white);
    font-size: 10px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(18,150,204,0.35);
}

/* Image wrap */
.idpf-card__img-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
    background: var(--id-bg);
    flex-shrink: 0;
}

.idpf-item--featured .idpf-card__img-wrap {
    aspect-ratio: 16/8;
}

.idpf-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .6s cubic-bezier(0.25,0.46,0.45,0.94);
}
.idpf-item:hover .idpf-card__img { transform: scale(1.06); }

/* Placeholder image */
.idpf-card__img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--id-dark) 0%, #1e2d40 100%);
    color: rgba(255,255,255,0.2);
}

/* Overlay hover */
.idpf-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(18,150,204,0.85) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 24px;
    opacity: 0;
    transition: opacity .35s ease;
}
.idpf-item:hover .idpf-card__overlay { opacity: 1; }

.idpf-card__overlay-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--id-white);
    color: var(--id-blue);
    text-decoration: none;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    transform: translateY(10px);
    transition: transform .35s ease .05s, box-shadow .3s;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.idpf-item:hover .idpf-card__overlay-btn { transform: translateY(0); }
.idpf-card__overlay-btn:hover {
    box-shadow: 0 8px 28px rgba(0,0,0,0.3);
    color: var(--id-blue-dark);
    text-decoration: none;
}

/* Corps de la carte */
.idpf-card__body {
    padding: 22px 24px 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.idpf-item--featured .idpf-card__body { padding: 28px 32px 32px; }

/* Catégories */
.idpf-card__cats {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}
.idpf-card__cat {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--id-blue);
    background: var(--id-blue-light);
    padding: 3px 10px;
    border-radius: 50px;
}

/* Titre */
.idpf-card__title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin: 0 0 10px;
}
.idpf-item--featured .idpf-card__title { font-size: 24px; }

.idpf-card__title a {
    color: var(--id-text);
    text-decoration: none;
    transition: color .2s;
}
.idpf-card__title a:hover { color: var(--id-blue); }

/* Extrait (vedette seulement) */
.idpf-card__excerpt {
    font-size: 14px;
    line-height: 1.75;
    color: var(--id-muted);
    margin: 0 0 16px;
}

/* Méta */
.idpf-card__meta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--id-border);
    margin-bottom: 12px;
}
.idpf-card__meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--id-muted);
}
.idpf-card__meta-item svg { flex-shrink: 0; color: var(--id-blue); }

/* Techs */
.idpf-card__techs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}
.idpf-card__tech {
    font-size: 11px;
    font-weight: 500;
    padding: 3px 10px;
    background: var(--id-dark);
    color: rgba(255,255,255,0.7);
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.04em;
    border: 1px solid rgba(255,255,255,0.06);
}

/* ============================================================
   ANIMATION ENTRÉE
   ============================================================ */
@keyframes idpfFadeUp {
    from { opacity:0; transform:translateY(24px); }
    to   { opacity:1; transform:translateY(0); }
}
.idpf-item {
    animation: idpfFadeUp .5s ease both;
}
.idpf-item:nth-child(2) { animation-delay:.06s; }
.idpf-item:nth-child(3) { animation-delay:.12s; }
.idpf-item:nth-child(4) { animation-delay:.18s; }
.idpf-item:nth-child(5) { animation-delay:.24s; }
.idpf-item:nth-child(6) { animation-delay:.30s; }
.idpf-item:nth-child(n+7) { animation-delay:.36s; }

/* Items filtrés — transition douce */
.idpf-item.isotope-hidden {
    pointer-events: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1199px) {
    .idpf-cols-4 .idpf-item { width: 33.3333%; }
}
@media (max-width: 991px) {
    .idpf-cols-3 .idpf-item,
    .idpf-cols-4 .idpf-item { width: 50%; }
}
@media (max-width: 600px) {
    .idpf-cols-2 .idpf-item,
    .idpf-cols-3 .idpf-item,
    .idpf-cols-4 .idpf-item { width: 100%; }
    .idpf-filter-style2 .idpf-filters { flex-wrap:wrap; border-bottom:none; }
    .idpf-filter-style2 .idpf-filter-btn { border:1.5px solid var(--id-border); border-radius:50px; font-size:11px; padding:8px 16px; }
    .idpf-filter-style2 .idpf-filter-btn::after { display:none; }
    .idpf-filter-style2 .idpf-filter-btn.is-active { background:var(--id-blue-light); color:var(--id-blue); }
}