:root {
    --bg-color: #fdf2f8;
    --panel-bg: #ffffff;
    --card-bg: #fce7f3;
    --card-border: #fbcfe8;
    --accent-pink: #f472b6;
    --accent-dark: #9d174d;
    --text-dark: #831843;
    --text-muted: #9f1239;
    --border-soft: #fbcfe8;
    --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', system-ui, sans-serif; }
body { background-color: var(--bg-color); color: var(--text-dark); min-height: 100vh; display: flex; flex-direction: column; }

/* HEADER */
header {
    background-color: var(--panel-bg);
    padding: 1.2rem 2rem;
    border-bottom: 1px solid var(--border-soft);
    display: flex; justify-content: space-between; align-items: center;
}
header h1 { font-size: 1.8rem; font-weight: 800; color: var(--accent-dark); letter-spacing: -0.5px; }

/* BUTTONS */
.action-buttons { display: flex; gap: 0.5rem; }
.btn {
    background-color: #f8fafc; color: var(--text-dark); border: 1px solid var(--border-soft);
    padding: 0.5rem 1rem; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 0.85rem;
    transition: all 0.2s ease;
}
.btn:hover { background-color: var(--card-bg); }
.btn-primary { background-color: var(--accent-pink); color: white; border: none; }
.btn-primary:hover { background-color: #ec4899; }
.btn-pink { background-color: #f43f5e; color: white; border: none; }
.btn-danger { background-color: #ef4444; color: white; border: none; }

/* DASHBOARD METRICHE */
.dashboard-bar {
    background-color: var(--panel-bg); padding: 1rem 2rem; display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem;
    border-bottom: 1px solid var(--border-soft); margin-bottom: 0.5rem;
}
.stat-card {
    background-color: var(--bg-color); padding: 0.8rem 1rem; border-radius: var(--radius);
    border: 1px solid var(--border-soft); display: flex; flex-direction: column;
}
.stat-card .label { font-size: 0.75rem; color: var(--text-muted); font-weight: 600; }
.stat-card .value { font-size: 1.3rem; font-weight: bold; color: var(--accent-dark); margin-top: 0.2rem; }

/* TABS */
.nav-tabs { display: flex; background-color: var(--panel-bg); padding: 0 2rem; border-bottom: 1px solid var(--border-soft); gap: 1rem; }
.tab-btn {
    background: none; border: none; color: var(--text-muted); padding: 0.9rem 1.2rem; font-size: 0.95rem;
    font-weight: 700; cursor: pointer; border-bottom: 3px solid transparent;
}
.tab-btn.active { color: var(--accent-dark); border-bottom-color: var(--accent-pink); }

/* MAIN CONTENT */
main { flex: 1; padding: 1.5rem 2rem; overflow-x: auto; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* BASIC PLAN CANVAS & QUADRATI */
.canvas-controls { margin-bottom: 1rem; display: flex; gap: 0.5rem; }
.basic-canvas-container {
    width: 100%; height: 650px; background-color: #fff; border: 2px dashed var(--border-soft);
    border-radius: var(--radius); position: relative; overflow: auto;
}
#svgConnections { position: absolute; top:0; left:0; width: 100%; height: 100%; pointer-events: none; }

.task-square {
    position: absolute; background-color: var(--card-bg); border: 2px solid var(--card-border);
    border-radius: 12px; padding: 0.8rem; box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    min-width: 200px; min-height: 180px; display: flex; flex-direction: column;
    resize: both; overflow: auto; cursor: move;
}
.task-square.connecting-source { border-color: var(--accent-dark); box-shadow: 0 0 10px var(--accent-pink); }
.square-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-soft); padding-bottom: 0.4rem; margin-bottom: 0.5rem; }
.square-title { font-weight: 700; font-size: 0.95rem; color: var(--accent-dark); outline: none; }
.square-actions { display: flex; gap: 0.3rem; }

.subtask-item {
    background: white; border: 1px solid var(--border-soft); border-radius: 6px;
    padding: 0.4rem; margin-bottom: 0.4rem; font-size: 0.8rem;
}
.subtask-top { display: flex; justify-content: space-between; align-items: center; }
.subtask-metrics { display: flex; gap: 0.5rem; font-size: 0.7rem; color: var(--text-muted); margin-top: 0.2rem; }

/* KANBAN BOARD */
.kanban-board { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.column { background-color: var(--panel-bg); border-radius: var(--radius); padding: 1rem; border: 1px solid var(--border-soft); min-height: 500px; }
.column-header { display: flex; justify-content: space-between; font-weight: 700; color: var(--accent-dark); padding-bottom: 0.5rem; border-bottom: 2px solid var(--border-soft); margin-bottom: 0.8rem; }
.task-count { background: var(--card-bg); padding: 0.1rem 0.5rem; border-radius: 10px; font-size: 0.8rem; }
.cards-container { min-height: 400px; display: flex; flex-direction: column; gap: 0.6rem; }

.card {
    background: white; border: 1px solid var(--border-soft); border-radius: 8px; padding: 0.8rem; cursor: grab;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}
.card:hover { border-color: var(--accent-pink); }

/* CALENDARIO */
.calendar-container { background: white; padding: 1.5rem; border-radius: var(--radius); border: 1px solid var(--border-soft); }
.calendar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.4rem; }
.calendar-day-head { text-align: center; font-weight: bold; color: var(--text-muted); font-size: 0.8rem; padding: 0.4rem; }
.calendar-day { background: var(--bg-color); min-height: 90px; border-radius: 6px; padding: 0.4rem; border: 1px solid var(--border-soft); }
.day-number { font-weight: bold; font-size: 0.75rem; color: var(--accent-dark); margin-bottom: 0.3rem; }
.calendar-chip { font-size: 0.68rem; background: var(--accent-pink); color: white; padding: 0.15rem 0.3rem; border-radius: 4px; margin-bottom: 0.2rem; }

/* MODALI E FORM */
.modal-backdrop { position: fixed; top:0; left:0; width:100%; height:100%; background: rgba(0,0,0,0.4); display:none; justify-content:center; align-items:center; z-index:100; }
.modal { background: white; padding: 1.5rem; border-radius: var(--radius); width: 90%; max-width: 500px; border: 1px solid var(--border-soft); }
.modal-header { display: flex; justify-content: space-between; margin-bottom: 1rem; color: var(--accent-dark); }
.close-btn { background:none; border:none; font-size:1.5rem; cursor:pointer; color:var(--text-dark); }
.form-group { margin-bottom: 0.8rem; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.2rem; }
.form-control { width: 100%; padding: 0.5rem; border: 1px solid var(--border-soft); border-radius: 6px; font-size: 0.85rem; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1rem; }