/* backend/static/css/b2b/kanban.css */
/* Versão: 3.4.0 - BTOS Kanban Reactor (Solid State Integration)
   Foco: Fix de Scroll Infinito (Flexbox min-height: 0 Hack) & Deep Height Propagation */

/* =========================================================
   SEÇÕES DO KANBAN
   ========================================================= */

.kanban-section {
    width: 100%;
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    min-height: 0; /* CRÍTICO: Permite que filhos encolham para scroll */
}

/* =========================================================
   CONTAINER DO BOARD (SCROLL HORIZONTAL)
   ========================================================= */

.kanban-board-container {
    display: flex;
    gap: 1.25rem; 
    overflow-x: auto;
    padding: 0.5rem 0.25rem 2rem 0.25rem;
    width: 100%;
    scroll-behavior: smooth; 
    -webkit-overflow-scrolling: touch;
    background-color: transparent;
    height: 100%;
    min-height: 0; /* CRÍTICO: Propagação de altura */
    align-items: stretch; 
}

/* Scrollbar horizontal */
.kanban-board-container::-webkit-scrollbar {
    height: 10px;
}
.kanban-board-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}
.kanban-board-container::-webkit-scrollbar-thumb {
    background-color: var(--border-color-default);
    border-radius: 10px;
    border: 3px solid #f1f5f9;
}
.kanban-board-container::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-muted);
}

/* =========================================================
   COLUNAS DO KANBAN
   ========================================================= */

.kanban-column {
    flex: 0 0 300px;
    min-width: 300px;
    max-width: 300px;
    background-color: #f8fafc;
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    transition: var(--transition-normal);
    justify-content: flex-start;
    height: 100%; 
    max-height: 100%; /* CRÍTICO: Impede que a coluna fure o layout */
    position: relative;
    border: 1px solid var(--border-color-default);
    border-top-width: 6px;
    box-shadow: var(--shadow-dna-sm);
    overflow: hidden;
}

/* Feedback visual ao arrastar sobre a coluna */
.kanban-column.drag-over {
    background-color: #eff6ff;
    box-shadow: inset 0 0 0 2px var(--color-primary-bs), var(--shadow-dna-md);
    transform: translateY(-2px);
}

/* =========================================================
   CABEÇALHO DA COLUNA
   ========================================================= */

.kanban-header {
    padding: 0.6rem 1rem;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color-light);
    background: #ffffff;
    flex: 0 0 auto;
    z-index: 10;
}

.header-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.kanban-header-title {
    font-family: var(--font-family-headings);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0;
    color: var(--color-text-headings);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.header-count {
    background-color: #f1f5f9;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 800;
    border: 1px solid var(--border-color-light);
}

/* =========================================================
   CORPO DA COLUNA (CARDS)
   ========================================================= */

.kanban-body {
    flex: 1 1 auto;
    padding: 1rem 0.25rem 1rem 1rem; 
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0; /* CRÍTICO: Substitui o 22rem fixo para permitir scroll */
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
}

/* Scrollbar vertical */
.kanban-body::-webkit-scrollbar {
    width: 6px !important;
}
.kanban-body::-webkit-scrollbar-track {
    background: transparent;
    margin-top: 5px;
    margin-bottom: 5px;
}
.kanban-body::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 20px;
}
.kanban-body::-webkit-scrollbar-thumb:hover {
    background-color: #94a3b8;
}

/* =========================================================
   AJUSTE CIRÚRGICO — CONVIVÊNCIA COM GRIP OVERLAY
   ========================================================= */

.kanban-body .team-member {
    touch-action: manipulation;
}

/* =========================================================
   ESTADO VAZIO
   ========================================================= */

.kanban-empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    font-style: italic;
    padding: 1rem;
    border: 2px dashed var(--border-color-light);
    border-radius: var(--border-radius-md);
    background: rgba(255, 255, 255, 0.5);
    margin: auto 0;
}

/* =========================================================
   CORES DOS ESTÁGIOS
   ========================================================= */

.kanban-column[data-stage="NEW"] { border-top-color: var(--color-primary-bs); }
.kanban-column[data-stage="NEW"] .kanban-header {
    background: linear-gradient(to bottom, #eff6ff, #ffffff);
}

.kanban-column[data-stage="INTERVIEW"] { border-top-color: var(--color-disc-i); }
.kanban-column[data-stage="INTERVIEW"] .kanban-header {
    background: linear-gradient(to bottom, #fffbeb, #ffffff);
}

.kanban-column[data-stage="FRIDGE"] { border-top-color: var(--color-disc-c); }
.kanban-column[data-stage="FRIDGE"] .kanban-header {
    background: linear-gradient(to bottom, #f0f9ff, #ffffff);
}

.kanban-column[data-stage="REJECTED"] { border-top-color: var(--color-disc-d); }
.kanban-column[data-stage="REJECTED"] .kanban-header {
    background: linear-gradient(to bottom, #fef2f2, #ffffff);
}

/* =========================================================
   TERMÔMETRO DE EQUIPE (HEATMAP)
   ========================================================= */

.team-heatmap {
    display: flex;
    height: 8px;
    width: 100%;
    background-color: var(--border-color-light);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 0.75rem;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.heatmap-bar { height: 100%; transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1); }
.heatmap-bar.d { background-color: var(--color-disc-d); }
.heatmap-bar.i { background-color: var(--color-disc-i); }
.heatmap-bar.s { background-color: var(--color-disc-s); }
.heatmap-bar.c { background-color: var(--color-disc-c); }

/* =========================================================
   DRAG & DROP — ESTADOS VISUAIS
   ========================================================= */

/* Estado global */
body.is-dragging {
    cursor: grabbing !important;
    user-select: none !important;
}

body.is-dragging * {
    cursor: grabbing !important;
}

/* Card fantasma */
.sortable-ghost {
    opacity: 0.4;
    background-color: var(--color-bg-light) !important;
    border: 2px dashed var(--color-primary-bs) !important;
    border-radius: var(--border-radius-md);
}

/* Card arrastado */
.sortable-drag {
    cursor: grabbing;
    opacity: 0.95 !important;
    box-shadow: var(--shadow-dna-xl) !important;
    z-index: 9999;
    background-color: #ffffff;
}

/* Picked */
.team-member.is-picked {
    transform: scale(1.02);
    box-shadow: var(--shadow-dna-lg);
    border-color: var(--color-primary-bs);
    z-index: 100;
}

/* =========================================================
   FILTROS
   ========================================================= */

.filter-btn {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-color-default);
    border-radius: 50px;
    background-color: #ffffff;
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 700;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-btn:hover { 
    border-color: var(--color-primary-bs); 
    color: var(--color-primary-bs);
    background: var(--color-bg-light);
}

.filter-btn.active {
    background-color: var(--color-primary-bs);
    color: white;
    border-color: var(--color-primary-bs);
    box-shadow: 0 4px 12px rgba(19, 50, 188, 0.2);
}

/* =========================================================
   KANBAN REACTOR (NOTIFICATIONS & BUBBLES)
   ========================================================= */

.reactor-bubble {
    position: absolute;
    z-index: 1000;
    background: #ffffff;
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-dna-xl);
    font-size: 0.85rem;
    line-height: 1.5;
    max-width: 280px;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid var(--border-color-light);
    font-weight: 500;
    color: var(--color-text-default);
}

.reactor-bubble::after {
    content: '';
    position: absolute;
    top: -7px;
    left: 100%;
    width: 14px;
    height: 14px;
    background: inherit;
    border-top: 1px solid var(--border-color-light);
    border-left: 1px solid var(--border-color-light);
    transform: translateX(-50%) rotate(45deg);
}

.reactor-bubble.danger {
    background: #fff5f5;
    border-color: var(--color-disc-d);
    color: #991b1b;
    animation: popIn 0.5s, pulse-red 2s infinite;
}

.reactor-bubble.warning {
    background: #fffbeb;
    border-color: var(--color-disc-i);
    color: #92400e;
}

.reactor-bubble.success {
    background: #f0fdf4;
    border-color: var(--color-disc-s);
    color: #166534;
}

.reactor-cta {
    display: block;
    width: 100%;
    margin-top: 12px;
    padding: 10px;
    background: var(--color-primary-bs);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 0.75rem;
    font-weight: 800;
    cursor: pointer;
    text-transform: uppercase;
    transition: var(--transition-fast);
    letter-spacing: 0.05em;
}

.reactor-cta:hover {
    background: var(--color-primary-darker);
    transform: translateY(-2px);
    box-shadow: var(--shadow-dna-md);
}

@keyframes popIn {
    from { opacity: 0; transform: translate(-50%, 20px) scale(0.9); }
    to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}

@keyframes pulse-red {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}